PostgreSQL Jobs

Deployment + Development for RCS & Deployment for WhatsApp 1. SOW for deployment for RCS & WhatsApp This defines the requirements and scope of work for setting up, deploying, and scaling the CPaaS Dashboard. The system is a microservices architecture with PostgreSQL as the main database. Currently, the WhatsApp and RCS services have been built and integrated. Objectives & Outcome The objective is to engage a DevOps to configure infrastructure, databases, queues, monitoring, and deployment pipelines to ensure the CpaaS dashboard is production-ready, scalable. Post award of project you will be shared a Github Repo weekly or daily update to be pushed there only. The scope includes backend API development, database schema design, & webhook hooks. The service must be built a...

Project: Resource Connect – MVP Development for Field Testing Resource Connect is a website application designed to bridge the gap between individuals in need and the nonprofit organizations that serve them. The platform will make it easier for community members to locate essential services—such as food assistance, healthcare, housing support, and legal aid—while giving nonprofits a streamlined way to share resources, manage engagement, and understand emerging community needs. We are entering the next phase of development: building the Minimum Viable Product (MVP) that will be deployed for field testing in Northwest Indiana. This MVP will translate our finalized Figma prototype into a functional, test‑ready application and will include the core features necessary to valid...

PROJECT OVERVIEW We are hiring a developer to build a production-ready, paid web application that automates and guides small businesses through registration and ongoing federal compliance. This is a commercial market product, not a prototype or internal tool. The system includes payment gating, entitlement enforcement, document automation, and compliance tracking. WHAT YOU WILL BUILD A web application that: • Collects business data required for • Guides users through a step-by-step compliance workflow • Generates Reps & Certs and related documents • Provides exact submission instructions • Tracks compliance and renewal deadlines • Requires payment before access • Enforces feature access server-side • Integrates Stripe Checkou...

We are building a platform that pulls information from multiple external APIs, processes and normalizes the data, and serves clean structured responses to our web and mobile applications. We also need lightweight SDKs (JavaScript + Python) so third-party developers can easily integrate with our API. What You'll Build REST API Server Node.js + Express backend with 10-15 endpoints Redis caching layer to manage rate limits and performance PostgreSQL database for user data and configurations WebSocket support for real-time data streaming Error handling with fallbacks (if one source is down, serve cached data) Deploy on with auto-deploy from GitHub JavaScript SDK npm package that wraps all API endpoints into clean one-liner methods Full documentation with examples Publish to npm Python...

I need the official open-source Java backed of our project deployed, configured, and ready for continuous delivery. The source code is stable; what’s missing is a production-grade environment that handles build, test, and roll-out with minimal manual touch points. Here is the flow I have in mind: 1. Hybrid database approach Distributed Cluster (3 VPS server) 2. Containerize the application with Docker and automate builds via Maven or Gradle. 3. Primary Databases for Chat History Cassandra (NoSQL) 4. Secondary Databases PostgreSQL (for users Metadata) on the codebase’s data model. 5. Redis : Presence/Session 6. Backed Language: Spring Boot Java 21/25 with RabbitMQ,and Maven or Gradle configuratio 7. Real-time: WebSockets for bidirectional communication 8. also preferred ...

Project: AI-enabled ERP & CRM for educational institutions. Role: Full Stack Developer (2+ openings). Start Date: February 23, 2026. Type: Individual contributors only (No Agencies/Consultancies). Experience: 4 & Above Technical Stack - Frontend: Angular 20+ - Backend: Node.js 20+ | framework - Database: PostgreSQL Key Responsibilities - Ship high-quality features for ERP and CRM product lines. - Build secure APIs and modern frontend architectures. - Translate administrative requirements into technical solutions. - Optimise PostgreSQL for high-concurrency environments. Compensation Starting from $1,000 USD / Month (based on expertise).

I need a clean, reliable bridge that moves data from Tally into my PostgreSQL database through Tally Definition Language. The goal is seamless, automated integration—no manual exports, no Excel hops—so that every voucher, ledger, and stock movement recorded in Tally lands in dedicated tables inside Postgres in near-real time. Here’s what matters to me: • TDL code that hooks into the relevant Tally events and packages the data for transfer. • A lightweight service or script on the Postgres side that receives the payload and inserts or updates the right tables. • Clear mapping documentation so I can see which Tally fields end up in which database columns. • Basic error handling and a simple log so I know when something fails. I already have the...

Full-Stack Developer for MVP Website Monitoring and Audit Suite We are seeking a skilled Full-Stack Developer to create a Minimum Viable Product (MVP) for a website monitoring and audit suite. The ideal candidate will have experience with both front-end and back-end technologies to build a user-friendly and efficient platform. You will be responsible for designing, developing, and implementing features that allow users to monitor website performance and conduct audits effectively. Strong problem-solving skills and attention to detail are essential. If you are passionate about building innovative solutions, we would love to hear from you! Key Responsibilities: Scanner Engine: Build a resilient microservice using Puppeteer and the Lighthouse Engine capable of mobile-first emulation and hardw...

We need a Python expert to build an end-to-end automated web-scraping and data-processing system for German B2B directories. The goal is to eliminate all manual steps — scraping, cleaning, deduplication, enrichment, and export — within 15 days. You’ll design and implement a high-speed, fault-tolerant pipeline that scrapes ~10 directories, normalizes data (including Umlauts and formatting), removes duplicates, detects updates, and exports clean structured data automatically. ⸻ Core Responsibilities • Develop asynchronous scraping system (Python 3.11+, aiohttp/httpx/Scrapy/Playwright). • Build deduplication & change-detection logic using hash comparison and timestamps. • Design and connect central database (PostgreSQL + SQLite) to store unique compa...

1. Description: The Residential "Digital Twin" We are building a Web-First Interactive Portal for residential homeowners. The platform allows owners to visualize their home’s construction by pinning photos and documents directly onto their architectural floor plans. The app acts as a "Digital X-Ray," capturing what is behind the walls (plumbing, electrical, structural) before they are closed. It provides a simple, high-resolution interface for the owner to track progress and manage Variation Requests(Change Orders) and defects (punch lists) in one geographically organized hub. Please view video in the link below to get an idea: 2. Scope of Work (SOW) Module 1: Interactive Pinning & Plan Engine High-Res Blueprint Viewer: Support for multi-page architectur...

Project Title Build Enterprise Reverse Auction Procurement SaaS Platform Project Summary We are developing a premium multi-tenant SaaS platform focused on reverse-auction-driven procurement for MSMEs and large enterprises. Phase 1 scope does NOT include SAP integration (planned for Phase 2). Core Requirements Multi-tenant SaaS architecture PAN-based company registration (unique ID) Multiple GSTN structure under one company Vendor registration with: PAN GSTN(s) MSME status Nature of business (Manufacturer, Wholesaler, Distributor, Retailer, Service Provider) Vendor item registration (Item Name, Description, HSN Code) RFQ module Real-time Reverse Auction engine with: Open / Blind / Rank-only modes 2-minute auto-extension Buyer sees vendor names Vendors cannot see competitor name...

Project Title: Full-Stack Recruitment Platform for Domestic/ International IT, Non-IT, Healthcare & Bulk Hiring for our clients. Project Description: We are seeking a Full-Stack Developer or Agency to build a robust, scalable recruitment portal for HR Recruitment and Staffing Consultancy Company based in India. Thru is portal we want to showcase our services to clients who are seeking candidates and candidates who are seeking job. This platform will not be a Job Portal like but a company website where both clients and candidates can contact us for various services. Key Modules & Requirements 1. Scalable User Accounts & Recruiter Trackers • Candidate Profiles: Registration of candidates on website to capture details like skills, experience, CTC, location and job prefer...

Odoo Functional Consultant (Odoo Certified) – Freelance | Remote We are Introduction Company, an official Odoo Partner specializing in ERP implementation and business automation solutions across Saudi Arabia. We are currently looking for a Certified Odoo Functional Consultant to join our team on a freelance remote basis. Job Responsibilities: Analyze client business requirements and translate them into Odoo functional solutions. Lead Odoo implementation projects (Accounting, Sales, CRM, Inventory, HR, etc.). Conduct client meetings, workshops, and system demonstrations. Configure Odoo modules based on project scope. Prepare functional documentation and user manuals. Support UAT and go-live processes. Coordinate with technical team for custom developments when required. R...

I need a seasoned backend developer to take full ownership of the server-side engine for a new ecommerce platform and stay on for ongoing maintenance as we scale. The scope begins with architecting a clean, well-documented API layer that powers the entire buyer journey—from browsing the catalogue and filling a cart, through checkout, payment, and post-purchase flows such as returns. In parallel, you’ll build out the seller pathway: onboarding, KYC verification, inventory sync, and order management. Key requirements • Robust cart, checkout, and return logic that can handle discounts, promotions, and edge-case calculations without breaking state. • Seamless Razorpay integration (cards, wallets, net-banking—all via Razorpay’s SDK and REST endpoints) with...

I’m building an internal security tool and need a solid PostgreSQL foundation that starts as a single, multi-tenant database yet can be cleanly split into separate databases—and separate servers—later on. The first release will concentrate on storing architectural components (a very well defined structure) alongside threat-intelligence data (mapped to the components metadata), so the schema must keep cross-tenant isolation strict while still allowing swift relational join matching across those two domains. What I need from you • A full relational schema (ERD and DDL) optimised for multi-tenant operation—think shared-table with isolated tenant-id or schema-per-tenant, whichever you can justify—and documented so the eventual extraction path is clear. &...

Backend / Full Stack Developer (Node.js, React, MongoDB, PostgreSQL) – 5+ Years Experience Location Remote / Hybrid Experience Required 5+ Years Employment Type Full-Time About the Role We are looking for an experienced Backend / Full Stack Developer with strong expertise in Node.js, React, MongoDB, and PostgreSQL to join our growing engineering team. You will be responsible for designing, developing, and maintaining scalable web applications and backend services. This role requires hands-on coding experience, strong system design knowledge, and the ability to work independently in an agile environment. Key Responsibilities • Design, develop, and maintain scalable backend services using Node.js. • Build responsive and dynamic frontend applications using React. • Desig...

The expected deliverables include a fully functional web platform and mobile application with course management, payments (one-time and subscription), certificates, coupons, reviews, AI-powered course search (RAG system), and role-based dashboards. The developer must provide complete source code, deployment (staging and production), database setup, Stripe integration, AI embedding pipeline, documentation, and secure, production-ready architecture. The estimated timeline is 10–12 weeks, covering both web platform and mobile app development.

I need a fully-functioning video-sharing and streaming site that captures the core YouTube experience and is ready to demo in just two weeks. The first phase is capped at US$500; deliver a rock-solid result on time and we can transition into a long-term, full-time arrangement. Scope for this sprint • User account creation and management with secure sign-up, profiles, and basic channel controls. • Video upload, server-side transcoding, and adaptive playback (HLS or DASH). • Commenting system with threaded replies, likes, and simple moderation. • Live-streaming capability via WebRTC or RTMP ingest routed through an open-source media server (Nginx-RTMP, Ant Media, etc.). • Fast, accurate search across titles, descriptions, and tags. • Mobile-first, r...

deploying the official open-source backend components and integrating them with various third-party services for full functionality. • mainly our requirements our own infrastructure Self-Hosted with Custom Instance public rebranded messaging app. • Only people who have previously studied and worked on production-style Signal server architecture and structure should communicate • Those who have not previously studied and worked on production-style Signal server architecture and structure should not submit bid proposals. • The official source code is open-source and available on GitHub. • You only need to deploy and configure the Signal server only. The process requires significant technical expertise in server management, Java, database administrat...

About the role We’re building a Security SaaS platform used by customers who depend on reliability, performance, and strong security foundations. As a Backend Developer, you’ll design and implement APIs and backend services that power our product—covering everything from data pipelines and integrations to authentication, auditing, and system scalability. You’ll work closely with Product, Security, and Operations teams to deliver secure-by-default services with great developer ergonomics. Tech stack (current & relevant) • Python (Django / Django REST Framework) • Go (services, high-performance workloads) • C++ / C# (agents, performance-critical components, integrations) • REST APIs, OpenAPI/Swagger • PostgreSQL / Redis (typical), m...

Build Full Stack API with FastAPI, PostgreSQL & Streamlit UI You said: Uploaded image Give me matter for this ChatGPT said: Good. This is important. If you write a weak description, you’ll attract low-quality freelancers. If you write clearly, you get serious professionals. I’ll give you a strong, clear project description you can directly paste. Option 1: FastAPI + PostgreSQL + Streamlit Project Project Title Idea: Build Full Stack API with FastAPI, PostgreSQL & Streamlit UI I need a developer to build a full-stack application using FastAPI, PostgreSQL, and Streamlit. Project Requirements: • Build REST APIs using FastAPI • Connect to PostgreSQL database • Implement full CRUD operations (Create, Read, Update, Delete) • Database table fi...

Hello, I am building a small data collection tool for a medical AI research project. The goal is to collect doctor-patient role-play audio data and prepare it for AI training. I need a simple system with the following features: 1) Web-based interface (works on mobile and desktop) 2) Upload audio files (WAV/MP3) 3) Automatic speech-to-text using Whisper 4) Editable transcript (dialect correction) 5) Field for medical Arabic normalization 6) Term notes input 7) Automatic folder/package generation per session 8) Cloud storage (Google Drive / S3 or similar) This is Phase 1: Data collection only (no diagnosis, no reports). Tech preference: - Frontend: Web (React or simple HTML) - Backend: Python (Flask/FastAPI) - ASR: Whisper - Storage: Cloud + Local Deliverable: A working MVP that allow...

The goal is to design a future-proof relational backbone for a multi-channel retail platform, built natively on PostgreSQL. I already run an operational system, and its live transactional records will have to be migrated into the new structure without downtime. Everything else—users, inventory, orders—will start fresh. Core design expectations The operational schema should be fully normalised to 3NF and optimised from day one for high concurrency. Think table partitioning (range and list), well-chosen GIN and B-Tree indexes, plus JSONB columns where semi-structured flexibility makes sense. Triggers, constraints and stored procedures must enforce business logic consistently, so the application tier can stay lightweight. Analytics layer Alongside the OLTP schema I need a se...

I want a web platform that lets Murder Mystery 2 players stake their Roblox items in real-time games—coin flip, jackpot and an upgrader—modelled as closely as possible on the look, feel and flow of bloxybet.com. Coin Flip • Any number of coin-flip rooms can run in parallel. Players should be able to open a room, set the wager, share the link and wait for an opponent, or instantly join an open room. The interface needs the same fast, casino-style experience Bloxybet offers, with live status updates through WebSockets or a similar solution. Jackpot & Upgrader Both games must mirror Bloxybet’s mechanics: tier-based jackpot pools that roll on a timer, and an upgrader where players select an item, choose a percentage chance and see an animation revealing suc...

I'm building a custom AI-powered operating system. This is Phase 1 — the foundation build. I need an experienced Linux sysadmin to create a polished, macOS-style Ubuntu 24.04 LTS environment on my hardware — functioning as my primary file server, tightly integrated with my MacBook Air M3. Everything must be modular, clean, and extensible — I will layer my own AI system on top later (including a Hailo-8 accelerator). Apple-level polish, not default Ubuntu. All work product and IP become my sole property upon payment. HARDWARE: • Server: HP Mini Pro G4 (64GB RAM, 256GB SSD) • Storage: Yottamaster 5-Bay DAS, 4TB drives (~20TB raw) • Client: MacBook Air M3 (8GB) • Telstra 4G modem (to be rooted) • [Future] Hailo-8 AI accelerator SCOPE: 1. m...

1. Project Overview We are seeking a developer to enhance an existing production web application built with the following technology stack: • Frontend: Vue.js • Backend: Laravel (API) • Database: PostgreSQL • Storage: AWS S3 • Deployment: GitHub Actions + AWS EC2 The system is already live and operational. This engagement focuses on foundational improvements and feature extensions — not a full redesign. 2. Scope of Work (Initial Phase) This phase focuses on improving the document upload workflow and implementing basic cloud import functionality. 2.1 Document Upload Improvements Requirements • Implement drag-and-drop upload support. • Support the following file types: • PDF • DOC / DOCX • CSV • XLSX &bull...

TechIcee AI Assistant is a custom-built AI system integrated into the TechIcee School Management SaaS platform. TechIcee already operates as a comprehensive digital ecosystem for schools, including dashboards, attendance, communication, analytics, and smart administration. The AI Assistant will act as: AI Academic Assistant AI Admin Automation Engine AI Parent Support Bot AI Data Intelligence Layer AI Teacher Productivity Tool This project is for hiring a skilled AI Developer on Freelancer who can design, build, train, and integrate this assistant into our existing SaaS architecture. 3. Objective of the Project To build a secure, scalable, production-grade AI Assistant integrated into: Web Admin Panel Teacher App Student App Parent App The assistant must: Understand school-specific data An...

I'm running my business on Odoo 18 Enterprise and need quick, hands-on help with Accounting module basics—specifically cash payments and bank/cash reconciliations. Main issues: After registering cash payments on invoices, they stay stuck in "In Payment" status instead of going directly to "Paid". Statements and reconciliation views show as incomplete/unmatched. I don't want to force fake bank deposits for cash that is not deposited need proper setup for cash journal (e.g., bypassing outstanding receipts account or daily cash log reconciliation). I have had an accountant set up Odoo for me although he was new to Odoo. He used to take care of my accounts in Zoho Books prior to this. I need someone who is a very good communicator, who speaks very good...

We are building a HIPAA-compliant healthcare data platform that ingests, enriches, and transforms clinical data from EHR systems, wearables, and external healthcare partners. Our platform: • Ingests raw healthcare events • Deduplicates and enriches data • Maps data into standardized formats • Separates PHI/PII from clinical data • Routes processed data into analytics and care coordination systems We are looking for a highly experienced senior full-stack developer to take ownership of our core backend platform. This is not a junior or mid-level role. You will be the primary engineer across two production services running on Google Cloud Platform. Tech Stack • Node.js (Express) • Python (Flask) • PostgreSQL (Cloud SQL) • BigQuery • GCP ...

I need my existing WordPress-based portal rebuilt on a modern .NET stack while keeping every core capability visitors already rely on—user registration and login, the full content-management/blogging workflow, and our current e-commerce flow. The assignment covers more than a straight port: once the core experience is re-implemented, I also want richer analytics and reporting, stronger security hardening, and seamless hooks into selected third-party services so the new platform launches with clear business insight, tighter protection, and future-ready integrations. You will work against a PostgreSQL back end; no other database is required. All existing WordPress data—users, posts, media, products, orders, and settings—must transfer intact, with zero visible downtime to c...

I have already created the subdomain of my main domain where will live and I can give you full SSH/root access to the Linux server that powers it (Ubuntu 24.04 with HestiaCP panel running on port 8083 of main domain). Subdomain has ssl via Let's encrypt. All I need is a clean, production-ready installation of the latest stable release, configured so it loads flawlessly from the subdomain (HTTPS, reverse proxy, environment variables, database, etc.). I have a VPS hosted by Hostinger. You are free to use the official Docker set-up or a manual Node.js build—whichever you feel is most reliable—but please secure it properly, connect it to a Postgres database (which has to be setup as well), and leave me with concise notes so I can maintain or upgrade it later. Acceptance wi...

I am using Odoo Enterprise 17.0+e hosted on an Amazon server, and I am currently experiencing an issue with the Spanish OCA tax modules. Suddenly, the OCA modules used to prepare Spanish tax reports (e.g. VAT returns) have stopped reading the relevant accounting records. As a result, tax reports such as the VAT report are generated without any data, despite the accounting entries being correctly recorded in the system. I am looking for an experienced Odoo/Python developer, preferably familiar with the Spanish OCA localization modules, who can help us diagnose and resolve the issue. The support would include: - Identifying why the Spanish OCA tax modules are no longer retrieving accounting data - Verifying the configuration and integrity of the relevant models and tax mappings - Fixi...

I'm looking for an experienced full-stack developer to implement the MVP end-to-end. I'll need a video call, so no scams here. Overview Clients submit coding tasks through a store-like request system. Each request becomes a project with clear lifecycle tracking, communication, time tracking, and weekly billing. The platform must support multiple roles: Client, Developer, and Admin. Core Features (MVP) Service Request & Project Creation • Store-style service selection • Structured task submission (requirements, priority, attachments) • Automatic project creation after request/payment Project Lifecycle Management • Status flow (e.g. Received → Investigating → In Progress → Review → Completed) • Progress updates and activity hi...

The developer should build a cross-platform AI-powered IT Help Desk agent and management system that supports Windows, Linux, and macOS. The system must include a backend API (preferably in Python FastAPI or Node.js) to handle ticket management, device registration, and command distribution, along with a secure database (PostgreSQL) and an optional vector database for AI knowledge retrieval. The agent itself should be written in a compiled language like Go for cross-platform deployment, capable of registering devices, reporting system info and heartbeat, detecting missing patches, restarting services, and executing safe commands remotely. The AI component should analyze incoming IT tickets, automatically suggest fixes, and optionally execute auto-remediation commands when safe. All communi...

We’re hiring a strong full-stack developer for an ongoing role. You’ll start part-time and can move to full-time based on performance and fit. We are building an AI character platform and you’ll work on cutting-edge systems across: * AI image generation * AI text generation * Memory systems * RAG pipelines * Agentic workflows * Frontend and backend product development What You’ll Do * Maintain and improve our production + Laravel platform * Build features end-to-end (UI, APIs, data model changes) * Debug and resolve issues quickly with high reliability * Improve performance, quality, and system robustness * Collaborate on architecture and ship pragmatic solutions fast Non-Negotiables * Design quality is paramount: clean, polished, modern UX/UI execution * Bug-fr...

My team needs a seasoned full-stack developer to step in as a consultant who can transfer knowledge rather than write code. I’m specifically looking for someone confident across frontend, backend, and database layers who can translate that depth into clear, structured technical training sessions. Your core mission is to design and deliver training that sharpens our developers’ practical skills. Expect to break down real project scenarios, walk through architectural decisions, explain code quality best practices, and answer ad-hoc questions as they come up. We work mostly with JavaScript/TypeScript, React, Node.js, and PostgreSQL, so fluency in these (or closely related stacks) will help you connect quickly with the team. Deliverables • A short training plan outlining top...

Title: Mobile-first Developer to build MVP (social graph + personalized discovery) Description: I’m hiring a freelancer to build an MVP for a mobile-first consumer app. The app includes: authentication, profiles, a connection graph, saving/liking “entities”, search + filters, and a personalized ranked discovery feed. Some interactions require privacy controls and server-enforced visibility rules (RLS). Core responsibilities: Implement Supabase Auth (Google OAuth + optional email) Design and implement Postgres schema + migrations Configure Row Level Security (RLS) properly (privacy rules enforced server-side) Build mobile-first UI screens: onboarding, discovery feed, search, entity detail, profile, connections, settings Implement a pluggable ranking module (server-side)...

Project: HeyKIVI – AI video communication platform (MVP completed), now moving into post-MVP scale-out. Main goals: Implement multi-tenancy + feature entitlement (customers only see their own use cases/features) based on Admin UI. Deliver continuous new use cases (frontend tile + backend workflow + HeyGen integration). Provide ongoing platform maintenance (bugfixing, hardening, small improvements). Pricing model: Fixed package for multi-tenancy/entitlements. Flat rate per new use case (continuous stream, varies by customer). Hourly rate for anything beyond these two fixed scopes. Tech stack: TypeScript, (API/backend), React 18 + Vite (frontend), PostgreSQL + Prisma, Docker Compose, Nginx, MinIO (S3), GitLab CI/CD, hosted on Hetzner (EU/Germany). Key responsibilities: backend ...

We need an expert Odoo + DevOps engineer to migrate our existing Odoo 18 environment from to a Quebec-based private cloud. This project involves strict compliance, hardened security, and zero-data-loss migration. What You’ll Do Provision production & staging servers in Quebec Harden Ubuntu (firewall, Fail2ban, SSH, auto security updates) Deploy Odoo 18 Enterprise with Nginx, SSL/TLS, secure headers Configure PostgreSQL (encryption, tuning) Migrate database, filestore, and ~13 modules from Ensure full functionality across Accounting, CRM, HR, Sales, Inventory, Website, Manufacturing, etc. Implement encrypted daily backups (30-day retention) Provide DR and technical documentation Support testing and final production cutover Experience working in environments aligned with: Law...

I’m building a new mobile application and I need a robust Java Spring Boot backend to power it. The core services you’ll create must cover: • User authentication and management with full multi-factor authentication (MFA) and support for future multi-party authentication flows. • A streamlined customer-onboarding journey that begins with registration and ends with a verified, fully profiled user record. • Reliable data storage and retrieval using a relational engine—MySQL or PostgreSQL, whichever you are most comfortable optimising. RESTful APIs should be documented with Swagger/OpenAPI, secured with JWT or a similarly strong token strategy, and thoroughly unit- and integration-tested. I’ll provide the mobile team’s contract-first API s...

My live SaaS runs on React, is deployed to Vercel, and stores data in Supabase. Production users are already in the system, so every change has to be safe, targeted, and fast. We are providing booking system for photography studio Issue 1 – Mismatched price between generated receipt and system Issue 2 - Time locking issue on booking form page (Time slot should locked when user paid , but there is other time slot that locked by unknown reason) Issue 3 - Booking & payment issue via FPX. These bugs exist where payment is sucess but booking not made. Payment is fail but booking is made. Issue 4 - Other bugs that will be added later Deliverables • Pull request(s) for each of the fixes and refinements • Brief deployment notes so I can push straight to Vercel I...

Please read carefully before bidding. We are building a production-grade AI-powered building inspection report platform. 90% was built in base44 however, base44 cannot parse pdf"s larger than 10MB, so we have hit a roadblock and decided to take another route. This is NOT: *A WordPress job *A Shopify job *A bubble/no-code job *A “prompt engineering” job *A basic CRUD web app This is a serious backend architecture project involving: PDF parsing (11MB+ technical reports) AI defect extraction Structured data normalization Repair cost estimation logic Long-running job orchestration Background workers / queues Multi-user concurrency Production deployment architecture NOTE: Required Technical Stack (Non-Negotiable) You must have experience with: Node.js or Py...

I’m building a high-end real-estate lead engine that can capture, qualify, and route 150–200 fresh inquiries every week with a hard 99.5 % uptime target. Instead of a generic chatbot, the core of this MVP is a lightning-fast Custom Qualification UI written in React, backed by a Node.js API and a PostgreSQL (or comparable SQL) data store. What I need from you is end-to-end ownership of the stack: solution architecture, clean code, robust testing, and cloud deployment. The product must open the door for future add-ons such as a real-time analytics dashboard, but for this first milestone the focus is on: • Lead scoring system that assigns quality grades the moment data arrives • Automated lead routing that pushes hot prospects to the correct broker or CRM queue wit...

I need a professional market intelligence tool for MercadoLibre Venezuela (MLV). The goal is to track competitor sales by monitoring inventory changes (Inventory Differential Tracking). Key Features: Discovery Crawler: Identify Item IDs in specific categories. Inventory Tracking: Check stock every 12 hours. Calculate sales: Sales = Stock_{Yesterday} - Stock_{Today} Restock Logic: Handle stock increases without counting them as sales. Anti-Bot: Use rotating proxies to avoid IP bans. Output: Data synced to a Google Sheet.

I'm seeking an experienced backend developer to build the backend for a cab booking application using Node.js. Essential Features: - User authentication - Payment processing - Driver tracking Ideal Skills & Experience: - Proficiency in Node.js - Experience with user authentication and payment processing - Knowledge in tracking algorithms and databases (MongoDB, MySQL, or PostgreSQL) Please provide relevant work experience.

I have built an app using lovable and want it now turned into an app on ios and android. It doesn't need to go in the app store, it can be published via test flight for iOS packaged as an apk for android as it only needs to be used by about 100 users. Ideally we will be able to update code in github and the apps will update on the devices, but i understand if this is not possible. App will need permissions for GPS, using the camera, saving photos to the local library and push notifications. Frontend: React 18 + TypeScript, built with Vite, styled with Tailwind CSS and shadcn/ui (Radix UI components) Backend: Supabase (hosted PostgreSQL database, authentication, file storage, and Edge Functions written in Deno/TypeScript) Routing: React Router v6 (single-page app) State Manage...

I’m building a B2B platform that now has to expose a well-structured REST API so other services can hook in without friction. The immediate priority is to wire my software to a range of external providers—including SMS / Voice APIs, social-media feeds, data-enrichment sources, single-sign-on, scheduling tools and some AI/ML services—while keeping the interface consistent for our own clients. Here is how I picture the job: • Design clean, versioned REST endpoints that sit on top of our existing stack (Node + Postgres) and follow standard verbs and status codes. • Build the integration layer for each third-party service. I need graceful handling of auth flows (OAuth2, JWT, API keys), rate-limits and retries, plus a simple way to toggle providers on or off. &bu...

We are looking for a skilled retainer developer to monitor, maintain, and fix bugs on our website built with React, Supabase, TypeScript, WebSockets, and PostgreSQL. In addition to maintenance, we need the developer to help create and enhance trading features on our loot box style platform which is based around football. Key Responsibilities: - Monitor and maintain the website - Quickly identify and fix bugs - Improve stability and speed of the site - Develop and enhance trading features - Implement new features based on user feedback Required Skills: - React - Supabase - TypeScript - WebSockets - PostgreSQL - Node.js - JavaScript This is an ongoing retainer role (1-3 months initially) with potential for long-term engagement. We need someone with very good availability, especially duri...

* This is for freelancers only, agencies stay away I need a Drupal specialist to build an institutional site whose primary role is to host and showcase educational content - specifically our research articles and publications. The platform must let visitors quickly locate material through robust search and filter tools tied to a clear taxonomy (author, topic, year, journal) and give them a one-click option to download individual papers as PDFs. Beyond the core article repository, I also want a dedicated area for larger research papers as well as a dynamic news & events section so we can highlight conferences, calls for papers, and awards. All content should be managed through Drupal’s editorial workflow with role-based permissions for authors, reviewers, and admins. Deliverabl...

I’m building and maintaining a series of backend services and I need an experienced Python developer who feels at home in FastAPI. The day-to-day work centres on designing clean, scalable REST endpoints, wiring them to a PostgreSQL database, and keeping the Dockerised environment tidy for smooth deployments. Most of the upcoming tasks involve integrating external providers: think payment gateways for transaction flow and AI/ML services that power in-app intelligence. Beyond those, you’ll help craft automation scripts, refine existing business logic, and keep an eye on performance as traffic grows. Here is what a typical assignment looks like: • create or extend a FastAPI micro-service • expose secure endpoints, including user auth where required • conne...