C Programmers for hire in United States
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Hire josep438
I bring exceptional English communication skills, structural transparency, and rapid delivery cycles to every project—whether handling an architectural consultation or a high-velocity 6-hour emergency refactor. I translate abstract business requirements into hardened, performant software. Let's discuss your...I bring exceptional English communication skills, structural transparency, and rapid delivery cycles to every project—whether handling an architectural consultation or a high-velocity 6-hour emergency refactor. I translate abstract business requirements into hardened, performant software. Let's discuss your engineering milestones! less -
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 Intragtraders
We know what trading is about and we are passionate about it. That is why we exclusively specialize in developing algo trading for Forex. We have a team of professionals with over 15 years of experience of developing EAs, indicators and scripts for Metatrader 4 and 5 (MT4 & MT5). We've created all sorts of EAs for our...We know what trading is about and we are passionate about it. That is why we exclusively specialize in developing algo trading for Forex. We have a team of professionals with over 15 years of experience of developing EAs, indicators and scripts for Metatrader 4 and 5 (MT4 & MT5). We've created all sorts of EAs for our clients dealing with Japanese candlesticks, Heiken Ashi and Renko charts. We've developed a range of EAs, as simple as MA crossover to as complex as involving multiple indicators with multi timeframe analysis. Below are some of the highlights of the additional functions requested by clients to add to their EAs. • Moving SL to BreakEven after reaching certain number of pips • Added Hidden SL and TP option • Half position closing at first TP • Trailing stop • Grid and Martingale capability • Equity protection feature to protect the running profit or specify daily SL and TP targets You bring the trading ideas, and we provide the experienced team to transform them into robust MQL4 / MQL5 forex programs. We feel pride in the quality of our work, and we always deliver the solution within the agreed time. We’ll put together a customized quote about your project and work with you to get started on your project. Let’s build something together! less -
Hire nicolen272
Hi, I’m Nicole 👋 I’m a **Full-Stack Product Engineer & UI/UX Designer** focused on building digital products that are clean, reliable, visually polished, and easy to use. I work across the complete product process—from understanding your idea and shaping the **user experience and visual direction** to development,...Hi, I’m Nicole 👋 I’m a **Full-Stack Product Engineer & UI/UX Designer** focused on building digital products that are clean, reliable, visually polished, and easy to use. I work across the complete product process—from understanding your idea and shaping the **user experience and visual direction** to development, testing, deployment, and ongoing improvements. My way of working is simple: **Understand → Design → Build → Test → Deliver** On the **design side**, I create modern, thoughtful interfaces with attention to layout, typography, color, usability, responsive behavior, and overall brand consistency. My goal isn’t just to make something look attractive—it should feel intentional and make the product easier to use. On the **development side**, I’m comfortable with modern web applications, backend systems, APIs, databases, automation, and AI-powered solutions. I can also step into an existing project to **redesign outdated interfaces, fix bugs, improve performance, add features, or clean up previous development work**. I believe great products come from combining **good design with solid engineering**. It’s not about using as many technologies or visual effects as possible—it’s about understanding the problem, choosing the right solution, and delivering something that works beautifully in the real world. Have a project in mind? Feel free to message me—I’d be happy to hear about it. 😊 less -
Hire mo1847
I’m a Senior AI Full Stack Developer with 10+ years of experience building AI-powered applications, intelligent automation platforms, scalable SaaS products, and production-ready web applications. I specialize in combining AI/LLMs with modern full-stack development to build reliable software that solves real business...I’m a Senior AI Full Stack Developer with 10+ years of experience building AI-powered applications, intelligent automation platforms, scalable SaaS products, and production-ready web applications. I specialize in combining AI/LLMs with modern full-stack development to build reliable software that solves real business problems, automates workflows, improves efficiency, and creates measurable value. 🤖 AI & LLM Development - AI Agents & Autonomous Workflows - LLM-powered applications - OpenAI GPT API & ChatGPT integrations - Google Gemini API integrations - Retrieval-Augmented Generation (RAG) - AI chatbots & intelligent assistants - Prompt Engineering & Optimization - Function Calling & Tool-Using Agents - AI Search & Recommendation Systems - Document Processing & Knowledge Bases - AI Workflow & Business Automation - LLM evaluation and optimization 💻 Full-Stack Development Frontend: React.js, Next.js, TypeScript, JavaScript, Tailwind CSS Backend: Python, FastAPI, Django, Node.js, Express.js, NestJS, REST APIs, GraphQL, Microservices Databases: PostgreSQL, MongoDB, Supabase, Redis, MongoDB Atlas Cloud & DevOps: AWS, Docker, Linux, Nginx, CI/CD, VPS, cloud-native architecture 🚀 What I Build - AI SaaS platforms - AI agents and copilots - RAG applications - Custom ChatGPT-style applications - AI customer support systems - AI document analysis platforms - AI automation systems - Business workflow automation - SaaS dashboards and enterprise applications - API platforms and third-party integrations - MVPs and production applications 🔌 API & System Integration I build robust integrations with AI providers, payment systems, communication platforms, analytics tools, databases, and third-party SaaS APIs. I focus on authentication, validation, error handling, retries, security, performance, and scalability. 🏗️ Engineering Approach I focus on more than just writing code. I design systems that are secure, maintainable, scalable, cost-efficient, and production-ready. I can help with everything from architecture and MVP development to AI integration, backend engineering, frontend development, cloud deployment, optimization, and ongoing improvement. If you need an AI Full Stack Developer, AI Agent Developer, LLM Developer, RAG Developer, OpenAI Developer, Python/FastAPI Developer, React/Next.js Developer, or SaaS Engineer, I can help turn your idea into a reliable production system. 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 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 -
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
