C Programmers for hire in United States
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Hire freelancerjohnr1
freelancerjohnr1 freelancerjohnr1
$35 USD / hour
Web, Mobile, AI & Blockchain | Top 1%United StatesI design and build production-ready software across Web, Mobile, AI, Blockchain, and Automation. I help startups, businesses, and entrepreneurs turn ideas into reliable, scalable digital products — from the initial architecture and development to integrations, deployment, and ongoing improvements. 🚀 What I Build •...I design and build production-ready software across Web, Mobile, AI, Blockchain, and Automation. I help startups, businesses, and entrepreneurs turn ideas into reliable, scalable digital products — from the initial architecture and development to integrations, deployment, and ongoing improvements. 🚀 What I Build • Web Applications & SaaS — React, Next.js, JavaScript/TypeScript, modern responsive interfaces • Mobile Applications — Flutter and React Native for iOS and Android • AI Solutions — AI-powered applications, LLM integrations, RAG systems, AI agents, chatbots, and intelligent automation • Blockchain & Web3 — Smart contracts, DApps, token systems, wallet integrations, DeFi solutions, and blockchain APIs • Automation — Business workflows, API integrations, bots, data processing, webhooks, and automated systems • Backend & APIs — Node.js, Python, FastAPI, REST/GraphQL APIs, databases, authentication, and third-party integrations • Cloud & Deployment — Docker, cloud infrastructure, CI/CD, monitoring, and production deployment 💡 My Approach I don't just write code — I focus on building software that solves the actual business problem. I start by understanding your requirements, users, workflow, and goals, then choose the right architecture and technologies for the project. Whether you need a complete product built from scratch, a new feature added to an existing application, or complex APIs and systems connected together, I can handle the development from end to end. What you can expect: ✔ Clean, maintainable, production-ready code ✔ Scalable architecture ✔ Clear and consistent communication ✔ Reliable API and third-party integrations ✔ Security-conscious development ✔ Testing and debugging ✔ Deployment and technical handover ✔ Long-term support when needed If you have an idea, an existing product, or a complex technical problem, let's discuss it and find the most practical way to build it. less -
Hire nataliyabest1
Senior Full Stack Engineer with 10+ years building scalable cloud systems in React, Node.js, and Python. Track record of delivering production platforms in healthcare, SaaS, and high-traffic consumer applications, with hands-on experience integrating LLM-based features (OpenAI, LangChain, RAG) to automate workflows...Senior Full Stack Engineer with 10+ years building scalable cloud systems in React, Node.js, and Python. Track record of delivering production platforms in healthcare, SaaS, and high-traffic consumer applications, with hands-on experience integrating LLM-based features (OpenAI, LangChain, RAG) to automate workflows and improve user experience. Strong in system design, performance optimization, and end-to-end ownership from frontend through cloud infrastructure. less -
Hire HiFiDesigner
HiFiDesigner HiFiDesigner
$60 USD / hour
Custom Web & AI Solutions | AWS DevOps EngineerUnited StatesI build and ship production web applications, AI integrations, and the AWS infrastructure that keeps them running — the three layers most clients otherwise split across three freelancers, where the handoffs are exactly where projects die. I own the whole stack, so architecture decisions get made once. WHAT I...I build and ship production web applications, AI integrations, and the AWS infrastructure that keeps them running — the three layers most clients otherwise split across three freelancers, where the handoffs are exactly where projects die. I own the whole stack, so architecture decisions get made once. WHAT I BUILD Web Development React, Next.js, TypeScript, Node.js, Python (FastAPI/Django). Server-side rendering for SEO-critical pages, clean REST and GraphQL APIs, PostgreSQL and DynamoDB, Stripe and third-party integrations, and responsive interfaces that hold up on real devices. AI & LLM Solutions - Chatbots and support agents trained on your docs, catalog, or internal knowledge base - RAG pipelines: vector databases (Pinecone, pgvector, OpenSearch), embeddings, retrieval tuning - Document intelligence: invoice parsing, contract extraction, PDF and image OCR at scale - Workflow automation that removes repetitive human steps from a process - Integration with OpenAI, Anthropic Claude, and AWS Bedrock, including prompt engineering, streaming, cost controls, and fallback handling AWS & DevOps - EC2, Lambda, ECS/Fargate, S3, RDS, DynamoDB, CloudFront - Infrastructure as Code with Terraform and CloudFormation - no click-ops - Docker, ECS, EKS/Kubernetes - CI/CD via GitHub Actions, GitLab CI, CodePipeline - automated tests, zero-downtime deploys - CloudWatch monitoring and alerting, IAM least-privilege, VPC design, WAF, secrets management, automated backups - Cost engineering: right-sizing, reserved and spot strategy, storage lifecycle policies HOW I WORK Scope before code. We start with a call about the business outcome, not just the feature list. You get a written scope with milestones and a clear price before any commitment. Visible progress. Regular updates with working demos, so course corrections cost hours instead of weeks. Code you can hand to anyone. Documented, tested, version-controlled, standard conventions. No clever tricks only I understand. A real handover. Architecture notes, setup docs, runbooks, and a walkthrough session. Whether you continue with me or bring it in-house, you own it completely. Support after launch. Warranty period on every build, plus optional monthly retainers. ENGAGEMENT OPTIONS Fixed-price - defined scope: an MVP, a migration, a specific integration Hourly - evolving requirements or joining an existing team Retainer - infrastructure management and continuous improvement Consultation - architecture review or DevOps audit before you commit budget GOOD FIT / NOT A FIT We'll work well together if you want a partner who pushes back when something's a bad idea, you value maintainability over the fastest hack, and you can give timely feedback. Probably not a fit if you need pixel-perfect design with no designer involved, or you're looking for the absolute lowest bid. Message me with what you're trying to build. Even if we don't work together, I'll tell you honestly whether the approach makes sense. less -
Hire qprotex
Technology leader with over 20 years of experience across cloud engineering, software architecture, cybersecurity, and technical management. I specialize in designing and securing enterprise-grade Azure environments, modernizing applications, implementing Infrastructure as Code, building CI/CD pipelines, and leading...Technology leader with over 20 years of experience across cloud engineering, software architecture, cybersecurity, and technical management. I specialize in designing and securing enterprise-grade Azure environments, modernizing applications, implementing Infrastructure as Code, building CI/CD pipelines, and leading teams through complex technology initiatives. My background combines hands-on engineering expertise with strategic leadership, allowing me to bridge cloud, software development, and security to deliver reliable, scalable, and business-focused solutions. My certifications: - Microsoft – Azure Administrator - Microsoft – Azure Fundamentals - Microsoft – Azure AI Fundamentals - Microsoft – Azure Data Fundamentals - CompTIA CASP+ - CompTIA Security+ - EC Council – CEH Certified Ethical Hacker - EC Council - CASE.NET Certified Application Security Engineer .NET -eLearnSecurity – eCRE Certified Reverse Engineer - IITAC – Certified Reverse Code Engineering Professional - IACRB – Certified Reverse Engineering Analyst -SmartBear – SOAPUI NG Pro less -
Hire skysystemsinc
skysystemsinc skysystemsinc
$30 USD / hour
Web & Mobile Apps | UX/UI | CMS Development | OdooUnited StatesWelcome to our Profile! Your Gateway to Exceptional Digital Experiences! We are a digital Agency known as Sky System, Inc. based in Raleigh, NC, USA. We are new to this platform but you can easily find us on other platforms with good reviews and ratings. We are a dynamic team of expert full-stack developers, UX/UI...Welcome to our Profile! Your Gateway to Exceptional Digital Experiences! We are a digital Agency known as Sky System, Inc. based in Raleigh, NC, USA. We are new to this platform but you can easily find us on other platforms with good reviews and ratings. We are a dynamic team of expert full-stack developers, UX/UI designers, SEO engineers, QA engineers, and Project Managers. Our skills span across various domains, with particular expertise in: ⭐ UX/UI Designing: Figma, AdobeXD, Sketch, and InVision Studio. ⭐ CMS: WordPress, Shopify, Webflow, Wix, and Squarespace. ⭐ Frontend - JavaScript/Typescript, HTML/CSS, Tailwind CSS, React, React Native, Flutter, Next, Vue, and Angular. ⭐ Backend - Node.js, Nest.js, PHP/Laravel. ⭐ Databases - MongoDB, MySQL, NoSQL, and PostgreSQL. ⭐ Cloud services - AWS. ⭐ Tools - Git, GitHub, bug trackers, Jira. We have extensive experience collaborating with various startups, medium-sized enterprises, and large-scale businesses across diverse industries. Also, we have great expertise in creating custom coding platforms/Software such as ✅ Non-Profit, Crowdfunding, NGO ✅ HRM, Payroll, Workforce Management system ✅ Task Management system / Project Management system ✅ Real Estate Investor/ Agent Portals ✅ Healthcare / TeleHealth / Doctor / Patient Portal ✅ Job Board ✅ E-commerce Marketplaces ✅ SaaS platforms ✅ ERP and CRM System Why Choose Us for Your Business? 1. Innovative Excellence: Elevate your business with our innovative solutions, setting you apart in the market. 2. Client-Centric Approach: Your success is our focus. We tailor services to meet your unique needs for a personalized experience. 3. Proven Track Record: Trust in our expertise with a proven track record of successful projects and satisfied clients. 4. Timely Delivery, Quality Results: Expect on-time delivery without compromising on the quality of our work, ensuring your project's success. Let's collaborate and elevate your digital presence to new heights! Whether it's a stunning website, an efficient e-commerce platform, or a robust application, we are here to turn your ideas into reality. Regards, Team Sky Systems, Inc. less -
Hire cliftonc20
I help businesses automate workflows and save time using AI. I build custom GPT-powered chatbots, document processing tools, and automation systems that reduce manual work and improve efficiency. Whether you need a chatbot for your website, AI-powered data processing, or workflow automation, I can deliver a reliable...I help businesses automate workflows and save time using AI. I build custom GPT-powered chatbots, document processing tools, and automation systems that reduce manual work and improve efficiency. Whether you need a chatbot for your website, AI-powered data processing, or workflow automation, I can deliver a reliable solution quickly. What I can build for you: • AI chatbots (customer support, FAQ, internal tools) • Document Q&A systems (PDF, CSV, knowledge base) • GPT-powered automation workflows (Zapier / Make) • Custom backend APIs using Python and FastAPI Tech stack: Python • OpenAI (GPT-4/5) • FastAPI • Zapier / Make • REST APIs • PostgreSQL Why work with me: • Fast delivery and clear communication • Focus on business results, not just code • Clean, scalable, and production-ready solutions Let’s build something that saves you time and grows your business. less -
Hire darialc9
Android App Development, Game Development, iOS Development, Mobile App Development, Agile Project Management⭐Senior Software Engineer with 10+ years of experience building scalable web platforms, AI-powered applications, mobile apps, and high-converting Shopify eCommerce solutions. ⭐I specialize in combining modern Full Stack development with AI/ML/LLM integration and advanced Shopify customization to help startups and...⭐Senior Software Engineer with 10+ years of experience building scalable web platforms, AI-powered applications, mobile apps, and high-converting Shopify eCommerce solutions. ⭐I specialize in combining modern Full Stack development with AI/ML/LLM integration and advanced Shopify customization to help startups and enterprises launch fast, scale efficiently, and improve business performance. ⭐Over the past decade, I have worked with mid-size and large-scale companies across SaaS, eCommerce, AI automation, fintech, and cloud platforms, delivering production-grade applications used by thousands of users worldwide. ✅Core Expertise: ✓ Full Stack Web Development ✓ Mobile App Development ✓ AI/ML/LLM Integration ✓ Shopify Store Development & Shopify Plus ✓ Custom Shopify Apps & Theme Development ✓ SaaS Platform Engineering ✓ API Development & System Architecture ✓ Cloud Infrastructure & DevOps ✅Technical Skills: ✓Frontend: React.js, Next.js, Angular.js, TypeScript, Tailwind CSS, Redux, HTML5 / CSS3, Backend, Node.js, Express.js, NestJS, Python, Django, FastAPI ✓ Mobile: React Native, Ionic, Android App Development, iOS App Development, Java, Kotlin, Swift, Objective-C ✓ AI/ML/LLM: OpenAI API, GPT-based Applications, LangChain, RAG Systems, AI Chatbots, Vector Databases, Prompt Engineering, AI Automation, Machine Learning Pipelines ✓ Shopify: Shopify Plus, Liquid, Shopify App Development, Headless Shopify, Store Migration, Custom Checkout, Subscription Systems, Payment Gateway Integration, Conversion Optimization ✓ Cloud & DevOps: AWS, Docker, Kubernetes, CI/CD, Firebase, Supabase, PostgreSQL, MongoDB, Redis ✅What Makes Me Different ✓Client First – Urgent support, transparent communication, and fast turnaround. ✓ Clean Code & Scalable Architecture – Maintainable, testable, and ready to grow. ✓ Real Business Results – Every feature serves a business goal, not just tech for tech's sake. ✅ My Commitment to You ✓ Fast communication, flexible availability across time zones, and reliable delivery. ✓ I don’t just write code – I build solutions that work today and scale tomorrow. ✓ Let’s turn your idea into a powerful, production-ready solution.🚀 Best regards, Darial C. less -
Hire RRSW
Fluent American English | Midwest / General American | 39-Year-Old Male Voice I am a systems administrator, audio engineer, developer, researcher and problem solver. My strongest work crosses disciplines into integration: hardware, software, networks, audio, sensors, servers, research and operations. AUDIO &...Fluent American English | Midwest / General American | 39-Year-Old Male Voice I am a systems administrator, audio engineer, developer, researcher and problem solver. My strongest work crosses disciplines into integration: hardware, software, networks, audio, sensors, servers, research and operations. AUDIO & VOICE AAS in Audio Engineering from SAE Chicago, with several years at Mystery Street Recording Studio, including apprenticeship and studio management. My home studio includes a Blue Yeti Pro, MXL 990, Focusrite Scarlett 2i2 and multiple DAWs. I can record two microphone profiles in one take, giving you or your engineer options at the source. I also handle dialogue editing, cleanup, restoration, EQ, dynamics, transcription and troubleshooting. SYSTEMS, IT & CYBERSECURITY Exclusive access to Frontier Cyber Security Models, such as Daybreak from OpenAI. 10+ years of hands-on Linux systems administration and technical troubleshooting, plus extensive Windows experience. I work with Linux/Ubuntu, Windows, VPS/server administration, NGINX/Apache, DNS, TCP/IP, VPNs, SSH, SSL/TLS, WordPress, Microsoft 365, Kaseya/Datto RMM, backups, Bash, Python, Git/GitHub, Wireshark, Nmap, Autopsy and Security Onion. I am comfortable restoring broken services, diagnosing unfamiliar systems, integrating APIs/tools and documenting changes. HARDWARE, EMBEDDED & PROTOTYPING I maintain an electronics/RF bench and work with Raspberry Pi, ESP32/Arduino-class hardware, embedded Linux, sensors, SDR, Wi-Fi, BLE, LoRa, cellular, GPS, radar, acoustic/RF sensing, UART/programming interfaces, data logging and COTS integration. I turn technical questions into small experiments & proofs of concept. RESEARCH, ENGINEERING & OPERATIONS I handle technical/market research, BOM development, sourcing/cost analysis, lead/business research, technical writing, process automation, feasibility studies, data analysis, website/server recovery and root-cause troubleshooting. My background includes composite manufacturing, prototype/model/tooling work, and roughly a decade owning and operating a Chicago courier business, with practical experience in logistics, scheduling, customer service, vendor coordination and time-critical ops. DELIVERABLES Working prototypes, source code/firmware, server/application configs, audio masters, BOMs, sourcing research, wiring/architecture documentation, test data, reports, procedures, troubleshooting findings, limitations and next steps. My process is simple: understand the problem, determine what can be tested, build the smallest useful solution, measure what happens, preserve what works and document the result. If I do not already know a platform, language, chipset or tool, that does not automatically make it a bad fit. I am comfortable learning what is necessary to solve the problem. US-based. Remote & willing to travel. Clear communication, practical documentation, and direct reporting of what has been demonstrated versus what still requires testing. less -
Hire zachnormn
AI (Artificial Intelligence) HW/SW, AI Chatbot, AI Development, AI Model Development, Amazon Web ServicesI build AI infrastructure, platforms, and CI/CD systems for startups and companies. I help engineering teams move faster, stay secure, and pass audits without the pain. For more than 15 years, I've helped organizations across aerospace, defense, healthcare, finance, and enterprise SaaS build systems that are fast,...I build AI infrastructure, platforms, and CI/CD systems for startups and companies. I help engineering teams move faster, stay secure, and pass audits without the pain. For more than 15 years, I've helped organizations across aerospace, defense, healthcare, finance, and enterprise SaaS build systems that are fast, secure, and reliable. I've cut CI builds from an hour to six minutes, saved companies over $168k/year on cloud costs, and built private AI platforms for nuclear reactor companies. What I Build: * AI Infrastructure - Private RAG platforms, AWS Bedrock, custom vector search, identity-scoped retrieval * Platform Engineering - Internal developer platforms, self-service infrastructure, developer productivity * Compliance as Code - FedRAMP, SOC2, NIST, HIPAA - automated, auditable, painless * CI/CD & Release Engineering - Fast, reliable pipelines. 10x faster builds (60m -> 6m) * High-Performance Systems - Rust, Go, Haskell - Kubernetes operators, custom tooling * Cloud Infrastructure - Multi-cloud, hybrid, air-gapped. Cost optimization included Key Results: - 10x faster builds (60m -> 6m) - $168k/year cloud cost reduction (scales to $1M+ with proper implementation across 5-10 person teams) - 2 weeks → under 1 day onboarding - Built private AI platform for nuclear reactor company Tech Stack: Rust • Go • Haskell • C • Linux • systemd • GitLab • Kubernetes • Podman • Helm • Terraform • Pulumi • AWS (Bedrock, SageMaker, EKS) • OpenTelemetry • ClickHouse • REST • GraphQL • postgresql • mongo • couchDB • influxDB • Python • lua My Philosophy: Solve the problem once, forever. No band-aids. No quick fixes. Just working systems. What Clients Appreciate: I simplify complex problems, communicate clearly, and deliver working systems. I document everything and leave your team self-sufficient. Exceed Your Expectations. Let's Build It Together. less -
Hire rofeald
Full Stack Developer & AI Automation Specialist with experience building scalable web apps (React, Node.js, Python) and integrating AI into real business workflows. I design and deploy automation pipelines, custom AI agents, and chatbot solutions that reduce manual work and boost efficiency. Whether you need a...Full Stack Developer & AI Automation Specialist with experience building scalable web apps (React, Node.js, Python) and integrating AI into real business workflows. I design and deploy automation pipelines, custom AI agents, and chatbot solutions that reduce manual work and boost efficiency. Whether you need a complete web platform, an API integration, or an AI-driven automation system, I deliver clean, maintainable code and solutions built to scale. less
