OpenAI Developers For Hire
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Hire AdeelAslam4
We're BrainX, a Pakistan-based software team that builds and maintains mobile apps people actually use. Baritastic, a HIPAA-compliant bariatric care app we've maintained for over 5 years, has 500,000+ installs and a 4.6 rating on Google Play, with native iOS and Android builds, wearable integrations across Fitbit,...We're BrainX, a Pakistan-based software team that builds and maintains mobile apps people actually use. Baritastic, a HIPAA-compliant bariatric care app we've maintained for over 5 years, has 500,000+ installs and a 4.6 rating on Google Play, with native iOS and Android builds, wearable integrations across Fitbit, Garmin, and Apple HealthKit, and a provider dashboard for care teams. That's not the only one live today: • Ponder, an AI voice-therapy app on both app stores • CaloTracker, an AI-powered calorie and nutrition tracker built in Flutter, with photo and barcode scanning and Apple Health sync • LUMP, a cross-platform Flutter social meetup app with a Node.js and MongoDB backend, live on both stores • RollStrong, a Flutter fitness app with a working subscription model, live on both stores • SwapDotz, an app using native NFC integration to verify and trade physical collectibles Clients back this with real budgets: one mobile app project came in at over $17,000, another at over $4,000, both five-star reviews specifically praising our delivery and communication. AI development is core to what we build into mobile • MathAMentor, an AI maths tutor students talk to through a live avatar • Call Sling, an AI agent that answers and routes inbound calls • DocuMed, AI medical transcription with mobile, web, and offline support • RAG assistants, document and workflow automation, and support bots running across websites and WhatsApp for live clients Also part of what we do: Web Development • Next.js, React, Node.js, Python, and Laravel Shopify & Custom eCommerce • Custom storefronts and eCommerce builds UX/UI Design • Full product design from concept through interface Tell us what you're building and we'll walk you through how we'd approach your mobile app. less -
Hire yuliussmayoru
yuliussmayoru yuliussmayoru
$40 USD / hour
Sr. Full Stack | Blockchain | Embedded System | AIIndonesiaHey there! I’m a full stack developer with over 10 years of experience building all kinds of digital products—from websites and mobile apps to blockchain platforms, embedded systems, and AI-powered solutions. I’ve worn a lot of hats over the years, but the common thread has always been solving real problems with...Hey there! I’m a full stack developer with over 10 years of experience building all kinds of digital products—from websites and mobile apps to blockchain platforms, embedded systems, and AI-powered solutions. I’ve worn a lot of hats over the years, but the common thread has always been solving real problems with smart, reliable tech. Whether you’re looking to launch something new or need help improving what you’ve already built, I’m here to jump in and make it work. -Web & Mobile Apps: Clean, responsive designs and solid backend logic. I work with tools like React, Vue, Node.js, Django, Flutter, and more to build apps people actually enjoy using. -Embedded Systems & IoT: I build smart, connected hardware using platforms like Arduino, ESP32, and Raspberry Pi. From prototyping to production-ready firmware, I work with C/C++, MicroPython, and platform-specific SDKs to control sensors, motors, displays, and more. I also integrate these systems with web and cloud services—often adding AI for tasks like real-time data analysis, voice interaction, or image recognition at the edge. -AI & Machine Learning: I integrate tools like GPT-4, Whisper (speech-to-text), and DALL·E into web and mobile platforms—automating workflows, building chatbots, content generators, or even custom AI copilots for your users or team. I also work with Python-based ML frameworks like TensorFlow and PyTorch for custom models and training. -Blockchain & Smart Contracts: I’ve developed and audited smart contracts (mainly Solidity) and built dApps that connect seamlessly with Ethereum, Solana, and BNB networks. Let’s bring your vision to life with clean architecture, scalable code, and tech that lasts. I’m ready to contribute as your long-term tech partner or on-demand expert. less -
Hire badarmadni927
badarmadni927 badarmadni927
$35 USD / hour
⭐ Top 1% Full-Stack | AI | LLM | IOS | WEB | APP|PakistanI’m a Top-Rated Full-Stack Developer helping startups and businesses design, build, and scale modern web, mobile, and AI-driven applications. My focus is not just development — but delivering reliable systems that perform at scale. What I Deliver: ✅ AI-driven applications & intelligent automation ✅ Custom web &...I’m a Top-Rated Full-Stack Developer helping startups and businesses design, build, and scale modern web, mobile, and AI-driven applications. My focus is not just development — but delivering reliable systems that perform at scale. What I Deliver: ✅ AI-driven applications & intelligent automation ✅ Custom web & mobile app development (end-to-end) ✅ SaaS platforms & business systems ✅ E-commerce solutions & integrations ✅ Clean UI/UX with performance in mind ✅ Robust backend systems & API architecture ✅ Application optimization & scaling ✅ Secure deployments, testing & CI/CD workflows Tech Stack: ✅ Frontend: React, Next.js, TypeScript, Angular,Bootstrap,Tailwind css, shade cn ✅ Backend: Node.js, Express, Django, Laravel, Next js. ✅ Databases: PostgreSQL, MongoDB, Supabase, Prisma ✅ Mobile Apps: React Native (iOS & Android) & Flutter ✅ AI Systems: LLM integrations, RAG apps, AI agents I work closely with clients to transform ideas into production-ready products — focusing on scalability, performance, and long-term maintainability. less -
Hire sofiaglzwork
I build custom web and mobile applications, AI agents, and automation systems for businesses that need reliable, scalable software. My work covers full-stack development, SaaS platforms, API integrations, workflow automation, AI-powered features, dashboards, and mobile apps. I can take a project from idea and...I build custom web and mobile applications, AI agents, and automation systems for businesses that need reliable, scalable software. My work covers full-stack development, SaaS platforms, API integrations, workflow automation, AI-powered features, dashboards, and mobile apps. I can take a project from idea and technical planning through development, testing, deployment, and ongoing improvements. I focus on clean architecture, practical solutions, clear communication, and building software that is easy to maintain and expand. Whether you need a new application, an AI agent, an internal automation tool, or improvements to an existing platform, I can help turn the requirements into a working product. less -
Hire tonyc00
Hello, I am a full-stack developer with extensive DevOps experience, particularly in designing scalable systems using Kubernetes, Azure, and AWS. I also have expertise in AI/ML engineering and deliver high-quality, production-ready solutions. With over 5 years of experience, I’ve worked on everything from Generative...Hello, I am a full-stack developer with extensive DevOps experience, particularly in designing scalable systems using Kubernetes, Azure, and AWS. I also have expertise in AI/ML engineering and deliver high-quality, production-ready solutions. With over 5 years of experience, I’ve worked on everything from Generative AI to business analytics and automation, helping organizations turn complex data into meaningful, actionable insights. I love building scalable, real-world AI solutions—whether it’s improving recommendations, automating workflows, or pushing the boundaries of LLMs and RAG-based AI systems. My expertise spans LangChain, Python automation, advanced machine learning techniques, and cloud-based AI solutions using Azure OpenAI and Azure AI/ML. I have hands-on experience deploying AI models on Azure, optimizing LLM applications, and integrating AI into enterprise systems for enhanced scalability and performance. My Expertise -AI/ML : Large Language Model, NLP, RAG, PyTorch, Deep learning, MLOps, LLaMA, AI Agent Development, OpenAI API, AI App Development, LangChain, AI Chatbot, Azure OpenAI, Azure AI/ML -Data Engineering: Python, R, Numpy, Pandas, GeoPandas, Linear Algebra, Probability, Statistics, Databricks, Microsoft Power BI, snowflake, Big Data Processing, Azure Data Factory, Azure Synapse, Azure SQL, Azure AI Search -Programming Languages: JavaScript/TypeScript, Python, R, C#, C++, PHP -Frontend: HTML5, CSS3, React.js, Next.js, Angular11, Tailwind CSS, Antd, PrimeReact, ShadCN, TanStack, Redux, zustand, Context API, RSuite -Backend: Node, Express, Django, Flask, .NET Core, ASP.NET, Laravel, Firebase, Superbase, Docker, Kubenetes -Database: SQLite, MySQL, MariaDB, PostgreSQL, MongoDB, Redis,Oracle -Cloud: AWS (EC2, S3, Lambda, Elasticsearch, Sagemaker), Azure(Logic App, APIM, Function App, Blob Storage, Azure SQL, Virtual Network, Azure CosmosDB, Azure DevOps, CI/CD,Azure AI Search, Azure CLI, PowerShell, Terraform, Azure Portal) Beyond the tech, I thrive on solving tough problems, collaborating with brilliant minds, and creating AI-driven solutions that actually make an impact. If you’re working on something exciting in AI, let’s connect—I’m always up for an interesting challenge! less -
Hire hlibt
I'm an AI & Full-Stack Software Engineer specializing in backend systems, LLM-powered applications, software quality, and application security. My work focuses on solving complex engineering problems: analyzing unfamiliar codebases, debugging production failures, designing reliable APIs, investigating performance...I'm an AI & Full-Stack Software Engineer specializing in backend systems, LLM-powered applications, software quality, and application security. My work focuses on solving complex engineering problems: analyzing unfamiliar codebases, debugging production failures, designing reliable APIs, investigating performance bottlenecks, and improving code quality through systematic testing and technical review. My experience covers scalable SaaS applications, distributed processing, asynchronous workflows, AI voice agents, and integrations between LLMs and production business systems. Selected engineering experience: - Worked on data-intensive SaaS architectures designed to handle approximately 50,000 records or tasks per day and datasets containing millions of records. - Designed LLM-driven conversational workflows involving customer interactions, external APIs, scheduling, and human escalation. - Performed code reviews, production debugging, root-cause analysis, API validation, and reliability improvements. I also conduct independent smart contract security research through Immunefi bug bounty programs, with 66+ bounty-recognized findings, including 2 Critical, 12 High, and 52+ Medium/Low findings. Security research has strengthened my ability to identify hidden assumptions, investigate edge cases, assess exploitability, reproduce technical failures, and communicate complex findings with clear evidence. Beyond Bittensor, I develop AI-powered SaaS applications, backend services, REST APIs, and LLM-integrated business workflows using Python, TypeScript, JavaScript, Node.js, React, Next.js, SQL, and Docker. My current professional focus is AI code quality and model evaluation. I am particularly interested in reviewing AI-generated code, validating technical solutions, designing meaningful test cases, analyzing implementation trade-offs, and producing structured feedback that improves AI reliability. I value technical accuracy, reproducible reasoning, maintainable engineering, and clear written communication. Open to remote software engineering, AI code evaluation, technical review, and AI quality assurance opportunities. less -
Hire longngoc2307
I build reliable software solutions that go beyond the original requirements. With experience across full-stack development, backend systems, AI integrations, automation, trading platforms, APIs, SaaS products, eCommerce, and complex problem-solving, I help businesses turn ideas into stable, scalable, and...I build reliable software solutions that go beyond the original requirements. With experience across full-stack development, backend systems, AI integrations, automation, trading platforms, APIs, SaaS products, eCommerce, and complex problem-solving, I help businesses turn ideas into stable, scalable, and production-ready applications. My clients often describe me as someone who does more than just write code. I analyze the real problem, suggest better approaches, improve architecture, and deliver solutions that are easier to maintain and grow. Recent client feedback highlights my strengths: ✓ Built automated trading strategies and indicators that exceeded the initial scope and performed reliably in live environments. ✓ Developed and fixed complex C#/.NET, API, and financial integrations with careful testing and troubleshooting. ✓ Created AI-powered systems, CRM workflows, automation solutions, and backend platforms. ✓ Delivered Shopify, WordPress, and custom web applications with strong attention to UX, performance, and business goals. ✓ Improved existing projects by identifying hidden issues and implementing cleaner, more efficient solutions. My technical expertise includes: • Full-Stack Web Development • PHP, Laravel, Node.js, Python, C#, .NET • React, JavaScript, HTML, CSS • AI Integration & Automation Workflows • API Development & Third-Party Integrations • SaaS Architecture & Database Design • Shopify & eCommerce Solutions • Trading Systems, Indicators & Algorithmic Strategies • Debugging, Optimization & Code Improvement • Cloud, Server, and Deployment Support My working approach: 1. Understand your business goal, not only the technical request. 2. Design a practical solution with long-term scalability in mind. 3. Communicate clearly throughout development. 4. Test carefully and deliver stable results. Whether you need a complete application built from scratch, improvements to an existing system, automation of manual processes, or help solving a difficult technical challenge, I focus on delivering measurable value. I believe great development is not just about completing tasks. It is about creating solutions that help your business move forward. Looking forward to work with you. less -
Hire REPLATechnology
REPLATechnology REPLATechnology
$30 USD / hour
Top Rated Verified & Confirmed By Freelancer.comPakistanHello, Thank's for taking the time to visit my profile. I’m a Full-stack Experienced Software & Mobile App developer with 10 years of industry experience / Blockchain, Mobile app & Software Development with over 10 years of experience operating as a high-end professional in the Blockchain & Software Industry. My...Hello, Thank's for taking the time to visit my profile. I’m a Full-stack Experienced Software & Mobile App developer with 10 years of industry experience / Blockchain, Mobile app & Software Development with over 10 years of experience operating as a high-end professional in the Blockchain & Software Industry. My clients consistently receive polished work in a timely manner with constant communications and updates. I offer a number of services through my expertise: ● ✔ BlockChain Development ● ✔ NFT Development ● ✔ Software Development ● ✔ Web App Development ● ✔ Artificial intelligence Projects ● ✔ Mobile App Development (IOS & Android) ● ✔ Website Development ● ✔ Application Design (UI / UX) ● ✔ Figma / XD ● ✔ Website Design ● ✔ Brand Identity Design My portfolio is chock full of these design elements, and I highly suggest you peruse it to better understand my style, work & vision. Along with a team of 18 professional developers who aide me in my design, I hold my skills in high regard & would love to use them to help you create a Best Product for your business. shoot me a message! I’m available through Freelancer & will respond ASAP so that we can break down your needs and decide exactly how we will tackle them. Thanks, & have a great day, Regards less -
Hire vinhtq0703
I'm a expert developer and I'm here to help you complete the project in the perfect way. I have over 10 years of experience in website development (e-commerce, advertising, information introduction, ...) and mobile app development. I'm experienced in many different programming languages (PHP, Laravel, Magento,...I'm a expert developer and I'm here to help you complete the project in the perfect way. I have over 10 years of experience in website development (e-commerce, advertising, information introduction, ...) and mobile app development. I'm experienced in many different programming languages (PHP, Laravel, Magento, Wordpress, OpenCart, ReactJs, react native, flutter, scraping . . .). I will bring the best results and efficiency when implementing projects and hope to make my customers satisfied. less -
Hire bohdan38
I’m Bohdan, a Senior AI & Full-Stack Developer focused on building production-ready AI applications, modern SaaS platforms, intelligent automation systems, and scalable web products. My core work combines modern full-stack engineering with Generative AI, allowing me to build complete products rather than isolated AI...I’m Bohdan, a Senior AI & Full-Stack Developer focused on building production-ready AI applications, modern SaaS platforms, intelligent automation systems, and scalable web products. My core work combines modern full-stack engineering with Generative AI, allowing me to build complete products rather than isolated AI prototypes. ⭐ AI, LLM & Generative AI Development I build AI-powered applications using OpenAI, Claude, Gemini, LangChain, LlamaIndex, vector databases, and modern LLM architectures. My AI development experience includes: • AI Chatbots and Conversational AI • LLM-powered applications • RAG pipelines and knowledge assistants • AI Agents and agentic workflows • Document intelligence and semantic search • AI workflow automation • OpenAI / Claude / Gemini API integrations • Vector databases including Pinecone and Milvus • AI-powered SaaS products ⭐ Modern Full-Stack Development I build fast, scalable, production-ready applications using: • Next.js • React • TypeScript • Node.js • Python • FastAPI • Laravel / PHP • PostgreSQL • MongoDB • Supabase • REST APIs and GraphQL I can handle the complete development lifecycle — frontend, backend, database architecture, API integrations, AI functionality, authentication, payments, deployment, and ongoing optimization. ⭐ SaaS & AI Product Development I specialize in turning ideas and existing systems into complete products, including: • AI SaaS platforms • Multi-tenant applications • Admin dashboards • Subscription systems • Stripe payment integrations • AI-powered productivity tools • Internal business platforms • MVP development • Existing application upgrades ⭐ Automation & Integrations I design automated workflows using: • n8n • Make • Zapier • Power Automate • REST / GraphQL APIs • Webhooks • Custom Python and Node.js automation I can connect AI models, CRMs, databases, third-party services, payment systems, and business tools into reliable end-to-end workflows. ⭐ What You Can Expect • Clean and maintainable production code • Modern, scalable architecture • Clear communication • Fast and reliable delivery • API and third-party integrations • Testing and documentation • Deployment and ongoing support Whether you need an AI chatbot, RAG system, AI agent, Next.js application, SaaS platform, automation workflow, or a complete AI-powered product, I can take the project from architecture through development and production deployment. less
