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    5,000 typescript jobs found

    Project Title: Full-Stack Developer for a Short-Term Rental (STR) Management Platform Description: We're building a multi-tenant SaaS platform for short-term rental / property management companies. The stack is (React, TypeScript) frontend and a Node.js/Express + PostgreSQL backend with JWT auth and organization-level data isolation. We need an experienced full-stack developer to extend features, fix bugs, and help harden the app for production. Core modules (existing + planned): Property & multi-calendar management, reservations/bookings Financials — P&L, owner payouts, agent commissions, expenses, reconciliation Revenue management & pricing recommendations Owner portals, team/user roles & permissions (multi-org) Cleaning & maintenance scheduling...

    $14 / hr Average bid
    $14 / hr Avg Bid
    237 bids

    We are a financial service company looking for an experienced Full-Stack Developer or a small team to deploy our pre-built React-based Loan Management System, migrate its data layer from Firebase/Mock to a robust SQL Database (MySQL or...Full-Stack Developer or a small team to deploy our pre-built React-based Loan Management System, migrate its data layer from Firebase/Mock to a robust SQL Database (MySQL or PostgreSQL) with a secure Node.js backend, and build 2 companion Android apps that sync with this centralized database. The web portal's user interface, screens, states, and business logic are 100% complete and built in React (TypeScript) + Tailwind CSS + Vite. You only need to build the SQL backend, wire the API endpoints, build the Android applications, and go live on our...

    $69 Average bid
    $69 Avg Bid
    32 bids

    ...Must-have skills: 5+ years with React.js and modern JavaScript (ES6+) Strong HTML5, CSS3, Tailwind CSS Experience with TypeScript and REST API integration Solid understanding of responsive/mobile-first design Nice to have: , React Native, or Redux experience Familiarity with Git and CI/CD workflows To apply, please share your portfolio or GitHub, a short note on relevant React work, and your availability. Shortlisted candidates may be asked to complete a small paid test task. Skills / tags to add: React.js, JavaScript, , TypeScript, HTML5, CSS3, Tailwind CSS, Redux Acceptance criteria • Lighthouse performance score ≥ 90 on desktop and mobile • No ESLint or TypeScript errors on build • All critical user journeys (browse catalog, add to cart,...

    $1072 Average bid
    $1072 Avg Bid
    146 bids

    ...backend services. Develop responsive frontend interfaces. Write clean, maintainable, and well-tested code. Participate in code reviews. Troubleshoot and resolve software issues. Optimize application performance and security. Collaborate with cross-functional teams using Agile methodologies. Required Skills 4+ years of professional software development experience. Strong knowledge of JavaScript and TypeScript. Experience with React. Experience with Node.js and Express. SQL or PostgreSQL database experience. Git and GitHub. REST API development. Docker fundamentals. Excellent problem-solving skills. Strong written English communication. Nice to Have AWS or Azure experience. CI/CD pipelines. Kubernetes. GraphQL. Automated testing with Jest or Cypress. Employment Details Remote posit...

    $58 / hr Average bid
    $58 / hr Avg Bid
    269 bids

    ...& Cloud Google Cloud Platform Google Cloud Storage File Uploads Media Library Secure Storage Third-Party Integrations Examples include: GoHighLevel Twilio Zoho CRM Stripe PayPal Google Workspace Google Cloud Google Document AI OpenAI Claude ElevenLabs Additional integrations should be supported through a modular API architecture. Technology Stack (Preferred) Frontend React TypeScript Backend Node.js Python (AI Services) Mobile React Native Android iOS Architecture REST APIs GraphQL (optional) WebSockets Microservices (preferred) Docker Kubernetes (optional) Database PostgreSQL Redis Cloud Google Cloud Platform Platform Requirements Progressive Web App (PWA) Responsive Design Modern UI/UX Enterprise-Level Security Multi-Tenant SaaS Architecture High Perf...

    $30 Average bid
    Guaranteed
    $30
    50 entries

    ...robust data analytics and reporting pipelines so end-users can visualise key metrics in-app. • Wire the application to several third-party services (payment, email, and one proprietary REST API) with clean, maintainable integrations. Tech landscape Frontend will be React with modern hooks; backend services will run on Node/NestJS, exposing REST (and possibly GraphQL) endpoints backed by MongoDB. TypeScript, Git, and CI/CD pipelines (GitHub Actions) are already in place. Acceptance criteria • All listed features work end-to-end and are covered by unit/integration tests. • Code follows NestJS & React best practices, fully typed. • API documentation is generated (Swagger/OpenAPI). • Deployment scripts run successfully on our staging server. If you hav...

    $273 Average bid
    $273 Avg Bid
    113 bids

    ...having 10+ .NET Core/Angular exp Design, develop, and maintain robust and scalable web applications using .NET Core for the backend and Angular 19 for the frontend. Implement server-side logic, APIs, and database interactions using C#, .NET Core, Entity Framework, and SQL Server (or other relevant databases). Develop responsive and interactive user interfaces using Angular, HTML, CSS, JavaScript/TypeScript, and related libraries (e.g., Angular Material, RxJS). Integrate frontend and backend components, ensuring seamless data flow and communication via RESTful APIs. Write clean, efficient, and testable code, adhering to coding standards and best practices. Participate in all phases of the Software Development Life Cycle (SDLC), including requirements gathering, design, developmen...

    $18 / hr Average bid
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    54 bids

    I am looking for a skilled Frontend Developer to build clean, responsive, high-performance interfaces for our web and mobile products. You'll work directly with our des...cross-browser compatibility and mobile responsiveness Write maintainable, well-documented code Must-have skills: 5+ years with React.js and modern JavaScript (ES6+) Strong HTML5, CSS3, Tailwind CSS Experience with TypeScript and REST API integration Nice to have: , React Native, or Redux experience Familiarity with Git and CI/CD workflows To apply, please share your portfolio or GitHub, a short note on relevant React work, and your availability. Shortlisted candidates may be asked to complete a small paid test task. Skills / tags to add: React.js, JavaScript, , TypeScript, HTML5, CSS3, Tailwind CS...

    $2127 Average bid
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    197 bids

    Seeking Versatile Web & Mobile Developer (WordPress, Shopify, PHP, Angular, React, Node.js, React Native, Flutter) We are looking for an experienced Full Stack Web & Mobile Developer to join our team on a long-term freelance basis. The ideal candidate should have h...hands-on experience developing WordPress and Shopify websites, modern web applications, and cross-platform mobile apps. You will work on new projects, feature enhancements, API integrations, bug fixing, and ongoing maintenance while collaborating with our team to deliver high-quality solutions. Project Skills: WordPress, Shopify, PHP, Angular, React.js, Node.js, React Native, Flutter, JavaScript, TypeScript, HTML5, CSS3, MySQL, MongoDB, REST API, API Integration, Mobile App Development, WooCommerce, Git, Full ...

    $15 / hr Average bid
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    1 bids

    ...similar to TallyPrime, with additional advanced features for inventory management, refurbished electronics, GST compliance, and business automation. This is a long-term project and we are looking for a developer who can continue enhancing the software after the initial release. ⸻ Preferred Technology Stack We welcome recommendations, but our preferred stack is: Frontend * React.js * * TypeScript Backend * ASP.NET Core (.NET 9 / C#) Database * PostgreSQL Mobile Application * Flutter (Android & iOS) Desktop Application (Optional) * Electron or * .NET MAUI API * REST API Authentication * JWT * Role Based Access Control (RBAC) ⸻ Required Features Company Management * Multi Company * Multi Branch * Financial Year Management * User Roles & Permissions...

    $122 Average bid
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    44 bids
    Improve MVP Website
    6 days left
    Verified

    ... Scope 1. A real UI/UX pass, not just code tweaks — elevate look, feel, and consistency 2. Mobile-first — ~70% of our traffic will be on phones, so every page must look great at 3. Reusable, tidy code — improve structure without rewriting the whole website smooth, restrained animation. Stack we are using: React 18 + TypeScript (Vite) · Tailwind CSS + shadcn/ui · React Router · React Hook Form It would be great if you have: 5+ years React + TypeScript, strong Tailwind + shadcn/ui A portfolio of polished, production websites with genuine design taste (live links, not mockups) Comfort improving an existing AI-assisted codebase without a wholesale rewrite An eye for premium marketplace/SaaS UI Clear English, reliable ...

    $792 Average bid
    NDA
    $792 Avg Bid
    52 bids

    ...looking for someone who: - has excellent communication skills (spoken and written English) - is highly proficient in TypeScript - understands DNS - understands web development (auth, backend, frontend, database) - is capable of responding to ~30 tier 3 tickets per day with AI help - can use AI to 10x their productivity You will be asked to answer the following questions when submitting a proposal: 1. Have you worked in a customer facing role before? e.g. sales, marketing, customer success, customer support, solutions architect etc 2. How would you rate your typescript proficiency from 1-5? 1 = Never heard of Typescript 5 = I'm a professional software engineer and know typescript very well 3. Have you ever built websites or web apps before (including wit...

    $54 / hr Average bid
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    101 bids

    ...seeking an experienced React TypeScript developer to resolve mobile interaction issues in my NoteCard component (). Desktop/laptop functionality works correctly and must not be changed. The issue is isolated to the mobile touch interaction in NoteCard.tsx. Please modify only the mobile touch interaction and do not change any other functionality. The desired mobile behavior is: tap an empty bulletin board to create a prayer request, touch and drag an existing note immediately to reposition it, and tap an existing note to open the existing Edit Prayer popup. The solution should be as simple, reliable, and maintainable as possible. When submitting your proposal, please briefly explain how you would approach this issue and describe any similar React/TypeScript mobile touch in...

    $127 Average bid
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    161 bids

    ...(Redux, Context API or your preferred proven approach) – Integrating REST/GraphQL endpoints and handling real-time updates where required – Ensuring responsive layouts and smooth interactions, with a keen eye on performance budgets – Setting up a clean CI/CD pipeline so each merge is automatically linted, tested and deployed A few things that will make you stand out – Deep knowledge of ES6+, TypeScript and modern build tooling (Webpack, Vite or similar) – Proven track record shipping complex SPAs to production – Strong CSS architecture skills (CSS-in-JS, Tailwind or SASS is fine as long as it scales) – Comfortable writing unit, integration and E2E tests (Jest, React Testing Library, Cypress) Deliverables 1. Fully functional React front-...

    $19 / hr Average bid
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    305 bids

    ...trainee who learns best by rolling up my sleeves and coding, so I’m looking for a tutor who can guide me through the complete web stack and accelerate my progress. The sessions must cover all three pillars—front-end, back-end, and database management—because I want to understand how every layer connects when building a real-world application. Front-end work will revolve around modern JavaScript/TypeScript frameworks (React, Vue, or Angular are all fine), component architecture, state management, testing, and performance tuning. For the back-end, I’d like to get comfortable with Node/Express or comparable frameworks, dive into RESTful API design, authentication, deployment, and containerisation basics. On the data side, we’ll focus on relational mod...

    $36 Average bid
    $36 Avg Bid
    15 bids

    ...Statistics and quick actions Notifications • Push Notifications (Firebase Cloud Messaging) • Job alerts • Application status updates • Promotional notifications • In-app notifications Documents • Resume upload/update • Download documents • Secure file handling Communication • Contact support • Feedback • Help & FAQ Technical Requirements Frontend • React Native (latest stable version) • TypeScript • Responsive UI for phones and tablets • Android & iOS support State Management • Redux Toolkit / Zustand / Context API API Integration • REST API integration • Axios • Centralized API service • Token refresh mechanism • Global error handling Performance Optimiz...

    $177 Average bid
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    79 bids

    This project centres on expanding and polishing a SharePoint Online environment through three parallel tracks: custom web-parts development, workflow automation, and full site customization & branding. The tenant already runs Microsoft 365, so everything you deliver must slot neatly into that ecosystem. Core build • SPFx-based web parts written in React, TypeScript and JavaScript, styled to match corporate guidelines. • Power Automate and, where it makes sense, Power Apps to eliminate manual steps in existing processes. • Visual refreshes that respect modern SharePoint theming while adding a unique brand identity. Site scope The work may touch intranet portals, team collaboration hubs or even a public-facing site—the exact mix is fluid, so versatilit...

    $356 Average bid
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    45 bids

    I have 4.7 years of hands-on front-end experien...nearby tech hubs • Weekly lists of vetted React-centric roles in SMEs, with brief notes on why each position aligns with my background • Direct support in navigating application channels—whether through LinkedIn, AngelList, or company portals—and tracking progress in a shared sheet or lightweight ATS • Tips for tailoring each submission so it highlights my component architecture, hooks, TypeScript, and testing experience Success for me looks like a steady flow of credible opportunities that fit my profile, along with clear next actions for every lead you surface. If you’ve previously placed front-end developers or have a strong local network, I’m eager to collaborate and start submittin...

    $79 Average bid
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    13 bids

    ...Protection - XSS Protection - SQL Injection Protection - Image Validation - Virus Scan - Secure Downloads --- 19. Mobile Responsive Perfect support for - Android - iPhone - Tablet - Desktop --- 20. Performance - Lazy Loading - CDN - Image Optimization - Fast Loading - Background Processing - Caching - Queue System --- Tech Stack (Preferred) Frontend - / React - Tailwind CSS - TypeScript Backend - Node.js - NestJS / Express Database - PostgreSQL Storage - AWS S3 / Cloudflare R2 Authentication - Firebase Auth / AI - Face Recognition API or custom AI model Payments - Stripe - Razorpay Deployment - Docker - Nginx - Ubuntu VPS --- Deliverables - Complete Source Code - Database - Admin Panel - Frontend - Backend APIs - Documentation - Deployment Guide - AP...

    $22 Average bid
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    20 bids

    ...trainee who learns best by rolling up my sleeves and coding, so I’m looking for a tutor who can guide me through the complete web stack and accelerate my progress. The sessions must cover all three pillars—front-end, back-end, and database management—because I want to understand how every layer connects when building a real-world application. Front-end work will revolve around modern JavaScript/TypeScript frameworks (React, Vue, or Angular are all fine), component architecture, state management, testing, and performance tuning. For the back-end, I’d like to get comfortable with Node/Express or comparable frameworks, dive into RESTful API design, authentication, deployment, and containerisation basics. On the data side, we’ll focus on relational mod...

    $15 Average bid
    $15 Avg Bid
    30 bids

    ...value. Scope of work Redesign the full landing page (UI/UX) Improve visual hierarchy and messaging clarity Create a strong hero section (clear value proposition) Design direction Modern SaaS style (clean, minimal, professional) Strong typography and spacing High-quality visuals/graphics (not generic) Inspired by top SaaS websites, but unique Tech stack (for reference) 15, React 19, TypeScript, Tailwind CSS (Implementation can be discussed separately if you also handle frontend) Deliverables Final landing page design (Figma preferred) Ready-to-use assets Optional: Frontend implementation (bonus) Ideal candidate Strong portfolio in SaaS landing pages Experience with conversion-focused design Good understanding of UX and product positioning Please include: Relevant port...

    $30 Average bid
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    85 bids

    # Clinic W...* WhatsApp Chat * Social Media Links * SMTP Email Service ## Forms * Contact Form * Appointment Form * Career Application Form * Newsletter Subscription ## Deliverables * Complete source code * Database schema (if applicable) * Admin panel * API documentation * Deployment on production server * Technical documentation * User manual * 30 days post-launch support ## Code Quality * TypeScript * ESLint * Prettier * Reusable components * Proper folder structure * API documentation * Git repository with version control ## Acceptance Criteria * Fully responsive on mobile, tablet, and desktop * All forms functional * SEO optimized * Performance score above 90 * No console errors * Cross-browser tested * Successfully deployed on production * Complete documentation provi...

    $483 Average bid
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    187 bids

    ...polling optimization * API design and performance improvements * Building CRM integrations/plugins * Improving scalability and reliability of event-driven services Tech Stack- Frontend- *Hero Ui * React.js * Zustand * NextUI * Tailwind CSS * React Hook Form + Zod * ApexCharts Backend - * Node.js * TypeScript * * REST APIs * Drizzle ORM * PostgreSQL * BullMQ * Redis / DragonflyDB * BetterAuth * pnpm *Websocket Looking For Someone With Strong experience with Node.js, TypeScript, API, webhook, websockets, polling, queues Good understanding of system design, microservices, event-driven architecture, queues, and real-time applications Able to work independently and suggest improvements instead of only following instructions Comfortable working on an existing production ...

    $91 Average bid
    $91 Avg Bid
    97 bids

    ...capabilities via APIs (OpenAI, Anthropic, or similar), including prompt handling and streaming responses. Connect the front end to a backend (Node.js or similar) and work with a database. Handle API integration, state management, and error handling properly. Collaborate on UX so the AI features feel smooth and genuinely useful, not bolted on. Ideal skills and experience: Strong React and JavaScript/TypeScript. Hands-on experience integrating AI/LLM APIs into real products. Comfortable with backend work (Node.js, REST APIs) and a database (PostgreSQL, MongoDB, or similar). Good understanding of async flows, API keys/security, and rate limiting. Attention to detail and clean, maintainable code. Nice to have: Experience with vector databases (Pinecone, pgvector) or RAG pipelines...

    $32 / hr Average bid
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    340 bids

    ...interview creation to AI-powered assessment with modern UI and backend integration. Objective Build a responsive and professional web application that allows organizations to create AI interview assessments while candidates complete adaptive AI interviews. The system should generate explainable interview reports instead of simply giving a score. Tech Stack (Preferred) Frontend React.js TypeScript Tailwind CSS Framer Motion / Recharts Backend Python FastAPI (preferred) Node.js is acceptable if required Database PostgreSQL or MongoDB Authentication JWT Role Based Access Deployment Vercel Render Railway User Roles Organization / Recruiter An organization account represents a company. The recruiter should NOT select a company after login. The recruiter already belon...

    $92 Average bid
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    25 bids

    ...no-code/low-code automation before he graduates. He wants the weekly 1-to-1 sessions to concentrate on these technologies, guiding him from absolute beginner to confidently building production-ready workflows. What I need from you • Design a structured yet flexible learning path that starts with core concepts and quickly moves into practical workflow automation, API integration, and custom JavaScript/TypeScript scripting inside n8n. • Run live, screen-shared lessons (Zoom or similar) that mix concise explanations with hands-on building; every concept should end in a mini-project he owns in his own n8n cloud instance. • Incorporate quick comparisons to Zapier and Make whenever helpful so he understands when to choose each platform. • Provide small home...

    $246 Average bid
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    48 bids

    ...Status I have started working on the frontend myself using AI tools, but honestly, it isn't good enough to become the final product. Link - I'm completely open to rebuilding the frontend from scratch if that's the better approach. I care much more about building a great product than trying to save the work that's already been done. Tech Stack Frontend TypeScript Tailwind CSS Backend Laravel 12+ PHP 8.3+ Database PostgreSQL (Preferred) I'm open to suggestions if you believe another approach would better suit the product. My Vision Saleshunt should become a clean, fast, and modern recruitment platform. The architecture should be easy to maintain, scalable, and well organized. Code quality is very important to me. I don't want shortcuts tha...

    $555 Average bid
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    74 bids

    Senior React/TypeScript Developer – Multi-Location Gas Station Operations Platform Project Overview We are building a cloud-based operations platform for a growing group of Shell and Esso gas stations across Canada. The goal is to replace multiple operational spreadsheets with a centralized web application that streamlines daily management tasks, reporting, cash reconciliation, and operational visibility across multiple locations. This is not a marketing website. We are building an internal business application used daily by station managers and operational staff. The platform should be designed for approximately 50 users initially, with the ability to scale to additional locations and users over time. Important Business Constraint Shell and Esso do not currently provide...

    $411 Average bid
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    189 bids

    I’m expanding our software engineering team here in Pakistan and want two strong full-stack engineers who are equally comfortable in ASP.NET and React.js. On any given week you might spin up a brand-new microservice in .NET 7, wire its UI in React + TypeScript, or dive into an older codebase to refactor and patch issues. Clean, well-documented commits and a habit of writing unit tests are essential because we ship continuously. Your day-to-day work will cover both building new applications and maintaining existing ones, and you’ll often be the first line of technical support when something goes bump in production—so clear, proactive communication is as important as your code. We collaborate in English on Slack and track work in Azure DevOps; experience with those ...

    $1055 Average bid
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    74 bids

    ...SDK Generate: OpenAPI 3.1 Swagger Documentation TypeScript SDK Request Validation Response Validation DATABASE TABLES bots telegram_accounts channels media_files stream_tokens download_tokens stream_cache download_cache api_clients client_domains analytics audit_logs system_settings jobs queue_failures health_checks BACKGROUND WORKERS BullMQ Workers: Channel Scan Worker Metadata Sync Worker URL Regeneration Worker Cache Cleanup Worker Analytics Worker Health Check Worker OBSERVABILITY Implement: Prometheus Grafana Loki Structured Logs Metrics Dashboard Error Tracking BACKUP SYSTEM Automated: PostgreSQL Backup Redis Backup Configuration Backup Session Backup Retention: Daily Weekly Monthly RECOMMENDED TECH STACK Backend NestJS TypeScript Prisma ORM Database Postgr...

    $111 Average bid
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    20 bids

    We are looking for a technical customer s...someone who: - understands frontend and general web app development very well (auth, backend, frontend, database) - has excellent communication - understands DNS - understands typescript - is capable of responding to ~30 tier 3 tickets per day with AI help - can use AI to 10x their productivity To be considered, begin your bid by answering: 1. Have you worked in a customer facing role before? e.g. sales, marketing, customer success, customer support, solutions architect etc 2. How would you rate your typescript proficiency from 1-5? 1 = Never heard of Typescript 5 = I'm a professional software engineer and know typescript very well 3. Have you ever built websites or web apps before (including with AI app builders...

    $56 / hr Average bid
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    77 bids

    Procedural 3D Welding Visualization Engine Project Specification Project Overview Develop a standalone TypeScript / procedural welding visualization engine. The module must be completely independent. No backend. No database. No authentication. No application-specific code. Only a reusable engineering visualization engine with a documented JSON API. Technology Required: • TypeScript • • WebGL Preferred: • BufferGeometry • Computational Geometry • CAD Visualization • Engineering Visualization • Parametric Modeling • Computer Graphics • Mesh Generation Joint Categories Plate / Plate (P/P) • Butt joint • Lap joint • Corner joint • Edge joint • T-joint • Cross joint • Offset joints • Cus...

    $540 Average bid
    $540 Avg Bid
    100 bids

    ...Laravel 9 application (PHP 8, Vue 3, Vite, MySQL) currently running on a traditional single-server LAMP stack. We need to migrate it to AWS using CDK and replace Firebase Realtime Database with Laravel Reverb for chat functionality. We will provide a fresh AWS account with ACM certificate already verified via Cloudflare. **Scope of Work** 1. AWS CDK Infrastructure Setup - Write AWS CDK stack (TypeScript) to provision: - VPC with public and private subnets - Application Load Balancer (ALB) with HTTPS and WebSocket support (idle timeout 3600s) - EC2 instance (private subnet) running PHP 8, Apache, Supervisor - RDS MySQL from local (private subnet, accessible only from EC2) - ElastiCache Redis (private subnet, accessible only from EC2) - S3 bucket...

    $476 Average bid
    $476 Avg Bid
    150 bids

    ...trigger firing multiple times when it should execute only once per event. I need the root cause identified, the flow corrected, and a brief explanation of what was changed so I can maintain it going forward. You’ll have access to the current .json export and, if helpful, a short Loom walkthrough that shows the mis-behaviour in real time. Please use the built-in N8N debugger and any Node.js or TypeScript tools you find convenient—just keep the final solution confined to the N8N environment so I can import it back without extra dependencies. Deliverables: • Cleaned-up workflow file(s) with the middleware logic fixed • Confirmation that the trigger fires exactly once per intended event • A concise changelog or inline comments highlighting your adjust...

    $132 Average bid
    $132 Avg Bid
    214 bids

    ...platform in the adult services space, so we need someone who's comfortable with that context and takes things like age verification, discretion, and user privacy seriously. If that's not your thing, no hard feelings — but if it is, we'd love to talk. What we're working with Backend's built in Node.js with NestJS and TypeScript, talking to PostgreSQL through TypeORM, with Redis in the mix for caching and real-time bits. Frontend is 14 (App Router) with React, TypeScript, Tailwind CSS, and Zustand for state. Chat runs over It's all organized as a Turborepo monorepo, deployed with Docker/PM2 behind Nginx on a Linux VPS. Auth is JWT-based (access + refresh tokens) with role-based permissions. Payments go through Segpay (the adult-industr...

    $32 Average bid
    $32 Avg Bid
    53 bids

    ...Our application is production-ready and built using Angular 15. The application contains approximately 200 routes/pages; however, many of these pages share common layouts, components, and workflows. We are looking for someone who can assess the application using industry best practices and provide a professional accessibility compliance report. ## Application Details * Framework: Angular 15 (TypeScript) * Application Type: Enterprise Single Page Application (SPA) * Approximate Size: ~200 routes/pages * Environment: Secure staging environment will be provided * Third-Party Components and Libraries include: * AG Grid * Handsontable * CKEditor * ng-select * Other Angular UI components and custom-developed widgets The accessibility assessment should include both custom-developed ...

    $10 / hr Average bid
    $10 / hr Avg Bid
    14 bids

    ...code changes Participation in reviews, risk mitigation, and verification activities Write maintainable, well-tested code (unit and integration tests) Support bug fixing, performance optimization, and technical debt reduction Participate in code reviews and help shape frontend architecture and standards Requirements Strong experience with React and React Native Solid understanding of TypeScript, modern JavaScript (ES6+), and component-based architectures Experience with state management solutions (e.g. Redux, Zustand, React Query, or similar) Familiarity with REST APIs and asynchronous data handling Experience writing automated tests (e.g. Jest, Testing Library) Ability to work in a regulated environment or willingness to learn (medical devices, healthcare, or similar...

    $27 / hr Average bid
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    178 bids
    CRM/TMS to SaaS Platform
    2 days left
    Verified

    ...responsibility is to convert the existing HTML application into a secure, scalable, production-ready SaaS platform while preserving all current features. Scope of work: 1. Frontend Migration * Convert existing HTML/CSS/JavaScript into: * * React * TypeScript * Tailwind CSS Requirements: * Keep existing UI structure * Maintain all screens * Convert pages into reusable components * Improve responsiveness and performance where needed 2. Backend Development Build a complete backend using: * NestJS * Node.js * TypeScript APIs Requirements: * Convert all frontend logic into backend services * Create secure APIs * Implement authentication * Role-based access control * Business workflow automation 3. Database Development Use: * PostgreSQL Create a compl...

    $1539 Average bid
    $1539 Avg Bid
    109 bids

    ...problems • believes technology should empower people • understands startup realities • wants to build something meaningful We value curiosity, integrity and execution more than titles. TECHNICAL PROFILE Preferred Experience: • SaaS Platforms • AI Systems • LLM Integration • OpenAI APIs • Multi-Agent Architectures • Product Development • Startup Environments Preferred Technologies: • • TypeScript • PostgreSQL • Supabase • Python • LangGraph • OpenAI • Cloud Infrastructure Equivalent experience is welcomed. RESPONSIBILITIES Product Architecture Design and evolve the technical architecture. AI Strategy Lead Future Agent development and intelligence systems. Team Building Help recruit f...

    $14 / hr Average bid
    $14 / hr Avg Bid
    174 bids

    ...correctness. * Apply behavioral evaluation rubrics consistently. * Write concise, evidence-based rationales. * Compare two model responses and select the stronger one. * Maintain high annotation quality and consistency. ### Ideal Candidate * Strong analytical and critical thinking skills. * Software engineering or computer science background preferred. * Comfortable reading code (Python, JavaScript, TypeScript, Java, C++, etc.). * Excellent written English. * Able to distinguish between technical mistakes and behavioral issues. * Careful attention to detail. ### You'll Need to Understand Topics Like * Agentic Safety * Scoping * Honesty vs. Confidence * Interaction * Deference * Verification * Engineering workflow * Severity calibration Training materials and rubrics wil...

    $9 / hr Average bid
    $9 / hr Avg Bid
    38 bids

    ...with idempotency enforcement, HMAC webhook verification and two-phase commit ledger This is one complete, continuous build. The developer works through a numbered 25-step build order from database setup to registry integration. There are no pauses, no handoffs, no separate contracts. Required skills — all of these, not most: PostGIS (mandatory — if you have never used it, do not apply), React + TypeScript, Node.js or FastAPI, Mapbox GL JS, Progressive Web App, S3 pre-signed uploads, BullMQ or Celery, pdfplumber, Google Earth Engine (Python), React Native. Engagement: Fixed price per milestone, not hourly. NDA required before the specification is shared. Estimated 5–7 weeks full-time. Strong performance leads directly to ongoing platform development To apply, an...

    $1530 Average bid
    $1530 Avg Bid
    295 bids

    ...explainable recommendations, not generic chatbot responses Example: “This athlete completed 5 out of 6 planned sessions this week, increased training load by 18%, had a drop in HRV, and reported poor sleep. Suggested adjustment: reduce intensity tomorrow and keep the next session in Zone 2.” Current / Planned Tech Stack The platform currently includes or is planned around: / React / TypeScript Tailwind CSS Supabase Flutter mobile app AI API integration Stripe Strava integration Garmin / wearable data integrations Apple Health / Health Connect Coach dashboard Athlete app Training plan modules Nutrition, recovery, readiness, and performance modules What I Need Help With I am looking for a developer who can help with: Reviewing the existing codebase and architect...

    $1318 Average bid
    $1318 Avg Bid
    129 bids

    ...correctness. * Apply behavioral evaluation rubrics consistently. * Write concise, evidence-based rationales. * Compare two model responses and select the stronger one. * Maintain high annotation quality and consistency. ### Ideal Candidate * Strong analytical and critical thinking skills. * Software engineering or computer science background preferred. * Comfortable reading code (Python, JavaScript, TypeScript, Java, C++, etc.). * Excellent written English. * Able to distinguish between technical mistakes and behavioral issues. * Careful attention to detail. ### You'll Need to Understand Topics Like * Agentic Safety * Scoping * Honesty vs. Confidence * Interaction * Deference * Verification * Engineering workflow * Severity calibration Training materials and rubrics wil...

    $8 / hr Average bid
    $8 / hr Avg Bid
    36 bids

    I’m building a simple, fast SaaS that lets craftspeople and small businesses generate and track QR codes without touching code. The dashboard must be written in modern React with TypeScript, backed by a Node.js / API connected to a production-grade database. Core workflow • Email / password signup and login • Advanced QR creation: users can upload batches, apply completely custom design elements (colours, logos, shapes, eye styles, etc.), and store them for later edits • Real-time analytics that surface the one metric my audience cares about most—scan counts—presented with clear charts and filters • CSV export for any report so owners can pull data straight into spreadsheets • Mobile-first responsive UI Operational needs &bul...

    $162 Average bid
    $162 Avg Bid
    98 bids

    ...correctness. * Apply behavioral evaluation rubrics consistently. * Write concise, evidence-based rationales. * Compare two model responses and select the stronger one. * Maintain high annotation quality and consistency. ### Ideal Candidate * Strong analytical and critical thinking skills. * Software engineering or computer science background preferred. * Comfortable reading code (Python, JavaScript, TypeScript, Java, C++, etc.). * Excellent written English. * Able to distinguish between technical mistakes and behavioral issues. * Careful attention to detail. ### You'll Need to Understand Topics Like * Agentic Safety * Scoping * Honesty vs. Confidence * Interaction * Deference * Verification * Engineering workflow * Severity calibration Training materials and rubrics wil...

    $6 / hr Average bid
    $6 / hr Avg Bid
    89 bids

    ...for the right person. Important — please read before applying: this is an adult-services classifieds & booking platform (legal, based in New Zealand). It contains adult content. You must be genuinely comfortable working on an adult-industry project. Discretion is essential and an NDA is required. If that's not for you, no worries — please don't apply. The tech stack 14 (App Router) + TypeScript PostgreSQL + Prisma ORM / NextAuth Deploying to an Ubuntu VPS (already provisioned), behind Cloudflare Scope of work / deliverables Push the provided code to a private GitHub repo and deploy it to my Ubuntu VPS. Install & configure: Node.js, PostgreSQL, a reverse proxy (nginx or Caddy), SSL/HTTPS, and a process manager (PM2 or systemd) so it stays runnin...

    $291 Average bid
    $291 Avg Bid
    263 bids

    ...Modern, clean, and intuitive UI/UX Fast loading speed and SEO-friendly structure Cross-browser compatibility (Chrome, Firefox, Safari, Edge) Secure and scalable architecture Clean, maintainable, and well-documented code Preferred Technologies React.js / (preferred) Node.js / Express (if backend is required) WordPress or Shopify if more suitable for the project HTML5, CSS3, JavaScript, TypeScript REST API integration Responsive CSS (Tailwind CSS or Bootstrap) Deliverables High-fidelity UI design Fully responsive website CMS or admin panel (if required) Deployment to my hosting/server Source code with documentation Basic training for content updates Acceptance Criteria Google Lighthouse score of 90+ for Performance, Accessibility, Best Practices, and SEO Load time under 3 seconds ...

    $26 / hr Average bid
    $26 / hr Avg Bid
    16 bids

    ...and secure server-side systems across our ecosystem. This includes our order management system, market data aggregation layer, user portfolio services, and real-time notification infrastructure, with a strong focus on low-latency performance, data integrity, and robust system architecture. Key Responsibilities - Design, develop, and maintain high-performance backend services using Node.js (TypeScript/NestJS/Express). - Build and optimize core trading infrastructure including order routing, execution engines, position management, and real-time market data processing. - Collaborate closely with product, frontend, and QA teams to define APIs and deliver reliable, scalable features. - Design and maintain secure RESTful and WebSocket APIs for frontend consumption and third-party int...

    $34 / hr Average bid
    $34 / hr Avg Bid
    125 bids

    ...correctness. * Apply behavioral evaluation rubrics consistently. * Write concise, evidence-based rationales. * Compare two model responses and select the stronger one. * Maintain high annotation quality and consistency. ### Ideal Candidate * Strong analytical and critical thinking skills. * Software engineering or computer science background preferred. * Comfortable reading code (Python, JavaScript, TypeScript, Java, C++, etc.). * Excellent written English. * Able to distinguish between technical mistakes and behavioral issues. * Careful attention to detail. ### You'll Need to Understand Topics Like * Agentic Safety * Scoping * Honesty vs. Confidence * Interaction * Deference * Verification * Engineering workflow * Severity calibration Training materials and rubrics wil...

    $7 / hr Average bid
    $7 / hr Avg Bid
    41 bids

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