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Freelance OpenAI Developer - Kevin Gonzalez
Freelance OpenAI Developer5.0 (2 reviews)

American (native English speaker) born and raised in New York City and now living in the richest country in the world, Luxembourg! I'm a product-centric CTO, engineering leader, and software engineer with 12+ years of experience crafting world-class software. I have strong expertise in React, Node, TypeScript, Python, Go, AI/ML, Azure, and much more. I've scaled organizations responsible for defining, engineering, and operating mission-critical systems optimizing $10B+ space assets while partnering with companies like SpaceX and other space. I have a powerful track record of establishing autonomous product-minded teams, pioneering agentic development workflows, and driving measurable commercial impact. For Codementor mentees: I remember exactly what it feels like to be stuck. You are writing good code, but you aren't sure how to break through to the next level. Whether that is becoming a Senior, Staff, or Principal Engineer, or eventually a VP of Engineering or CTO. Nobody hands you a manual for that transition. I started exactly where you are. I went from building React UIs as part of a scrum team to leading large organizations engineering the systems for multi-billion dollar satellite assets. Today, as the CTO of Symphonee AI, I still code every day. I do this because you can't lead engineers if you don't understand the reality of the work. I am here to help you see the things you don't know you don't know. I want to be the mentor I wish I had. Someone to cut through the noise, show you the shortcuts I learned the hard way, and help you get to that next level faster. Whether you are feeling lost, facing a specific technical challenge, or just ready to move up, let's talk.

Freelance OpenAI Developer - Kazi Sohan
Freelance OpenAI Developer5.0 (150 reviews)

I love to teach what I know. I think I can explain things easily with examples. I have been working as a Software Engineer for the last 5 years and have worked with some of the world's most reputed companies like **Open AI, Scale AI, Doloras Lab**, etc as a freelancer.

Freelance OpenAI Developer - Tanisha Bhayani
Freelance OpenAI Developer5.0 (318 reviews)

8 years of experience in building and managing AI Systems. * I develop end-to-end AI systems from requirements analysis, and data gathering to deployment, implementing new methods/research papers, and turning projects into research outcomes. I have achieved substantial performance in DL/ML/RL models for CV and NLP domain problems. * Implementing and deploying projects handling and maintaining scalability, research papers as well as POCs. * Project planning, requirements gathering, and analysing requirements to define the system's architecture, and implementation timeline. * Provide mentoring to junior developers for ML projects. Website: [roshantanisha.github.io/?ref=codementor](http://roshantanisha.github.io/?ref=codementor) Summary: I like to work on technology that is smart, simple and sophisticated. This sums up the vast knowledge required to work on projects to excel in a working product. I like to train Deep Neural Networks and understand them well. I have mentored many students for their AI careers, teaching them Machine Learning and Mathematics. I am a mentor for the RFS (Reach for the Stars) Programme by the Aga Khan Education Board for India. I am an alumnus of this program as well. I have a cumulative experience of 8 years working in the product and service-based industry for creating Machine Learning projects. I have done some innovative work that I am proud of and am continuing to do so. I try my best to contribute my expertise to the project I am working on. Highly Experienced in Machine Learning, Deep Learning, Advanced Deep Learning, Artificial Intelligence, and Algorithms, including models in the production environment, and deploying ML models. Working with top Indian colleges like BITS, niche NLP and CV, real-estate startups, MNCs, and Fortune top 20 companies, working with sensitive anonymized datasets, and creating state-of-the-art models are some of my achievements. I have strong and correct knowledge of Deep Learning concepts from the above experiences.

Freelance OpenAI Developer - Avadhesh Sengar
Freelance OpenAI Developer

🚀 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 | 𝟭5+ 𝗬𝗲𝗮𝗿𝘀 𝗶𝗻 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 & 𝗦𝗲𝗰𝘂𝗿𝗲 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 I specialize in designing and delivering high-performance, scalable, and secure applications across enterprise and cloud environments. With proven expertise in .NET (Core 7/8/9), Azure & AWS Cloud, Data Engineering, and AI-powered integrations, I help organizations modernize systems, optimize performance, and drive innovation. 🔑 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 ➡ 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 & 𝗦𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆 → Microservices, REST APIs, Windows Services, Cron Jobs, Performance Optimization, Security Implementations. ➡ 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗮𝘁𝗮 → Azure Logic Apps, Azure Semantic Search, Redis Cache, Azure Sql, AWS Cloud, MS SQL, PostgreSQL, Snowflake, Airflow, Python, Data Processing Pipelines, ETL, Akamai CDN. ➡ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 & 𝗧𝗼𝗼𝗹𝘀 → [ASP.NET](http://asp.net/) Core, .NET 8,9, C#, EF Core, Python, Django, FastAPI, jQuery, Bootstrap, OpenXML, GitHub, Bitbucket, TFS, JIRA. ➡ 𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻→ AI Tools Integration, Intelligent Search, Workflow Automation. 🏆 𝗥𝗲𝗰𝗼𝗴𝗻𝗶𝘁𝗶𝗼𝗻 ✔ Employee of the Quarter – Telus Digital. ✔ Employee Recognition Award – Thomson Reuters Elite. ✔ Contributed to Swayam (Gov. of India initiative) in collaboration with Microsoft & AICTE. 💡 𝗣𝗮𝘀𝘀𝗶𝗼𝗻𝗮𝘁𝗲 𝗮𝗯𝗼𝘂𝘁 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲-𝗴𝗿𝗮𝗱𝗲, 𝗰𝗹𝗼𝘂𝗱-𝗳𝗶𝗿𝘀𝘁, 𝗮𝗻𝗱 𝗔𝗜-𝗱𝗿𝗶𝘃𝗲𝗻 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 𝘁𝗵𝗮𝘁 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗺𝗲𝗮𝘀𝘂𝗿𝗮𝗯𝗹𝗲 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗶𝗺𝗽𝗮𝗰𝘁. Looking for any long term engagement/Mentoring of .Net, Python, Django etc. project.

Freelance OpenAI Developer - Rajesh Dhiman
Freelance OpenAI Developer5.0 (26 reviews)

Is your AI-powered MVP built on a fragile 'vibe-coded' foundation? Are you struggling to scale a prototype that was built with lightning speed but is now plagued by bugs, security holes, and technical debt? I transform brittle AI prototypes into robust, **production-ready applications**. As a senior AI engineer specializing in the **Node.js** and **React** ecosystem, I bridge the gap between rapid, AI-assisted development and the disciplined engineering required for scalable, secure software. But robust software is only half the battle. The other half is making it *work for your business*. I design and implement **intelligent automation workflows** that connect your apps, eliminate manual tasks, and free up your team to focus on high-impact work. Whether you need to rescue a failing project, automate a core business process, or build a scalable MVP from the ground up, I provide the expert oversight to ensure your AI initiatives deliver real, measurable value. **My Core Services:** * **🤖 AI Code Rescue & Remediation:** I conduct deep **AI code audits** to debug, refactor, and secure fragile codebases (especially those built with LangChain.js). I turn unmaintainable prototypes into stable, scalable assets ready for real users. * **⚙️ Intelligent Workflow Automation & Integration:** I design and build digital assembly lines for your business. I offer a full spectrum of automation solutions: * **Rapid Integration:** Using **Zapier, Make.com & n8n** to connect your existing tools and solve immediate process bottlenecks. * **Custom API Development:** Building custom **Node.js** APIs and webhooks to connect proprietary systems or handle complex logic that no-code tools can't. * **AI-Powered Decisions:** Infusing your workflows with intelligence using the **OpenAI API** to triage support tickets, qualify sales leads, or generate content automatically. * **🚀 Custom AI Solution Development:** I architect and build bespoke AI solutions from scratch, from **Custom GPTs** and intelligent **AI Agents** to complex RAG (Retrieval-Augmented Generation) pipelines that leverage your private data. * **👨‍🏫 AI Engineer & Career Mentorship:** I provide 1-on-1 coaching to help developers navigate the AI landscape, master tools like LangChain.js, and build a successful career in AI engineering and automation. **My Tech Stack:** * **Languages:** Node.js, TypeScript, JavaScript * **Frameworks:** React, Next.js, Express.js, NestJS * **AI / LLM:** LangChain.js, OpenAI API, LlamaIndex, Vector Databases (Pinecone, Qdrant) * **Automation Platforms:** Zapier, Make.com, n8n Ready to move past the prototype phase and build a real business? **Send me a message with your project details or book a session to get started.** --- ### Service Packages * **Package 1: AI Code Audit & Production-Ready Roadmap** * **Description:** Have an AI-generated MVP that feels unstable? I'll perform a comprehensive review of your codebase. You'll receive a detailed report identifying security vulnerabilities, performance bottlenecks, and a concrete, actionable roadmap to make your application **production-ready**. This is the perfect first step to de-risk your project. * **Package 2: Intelligent Automation Workflow** * **Description:** Let's put a core business process on autopilot. We'll map out a high-impact workflow and I'll build a robust automation to solve it. Ideal for **automating lead qualification**, **triaging customer support tickets**, or **streamlining content pipelines** using the best tool for the job—Zapier, Make, or custom Node.js scripts. * **Package 3: Scalable AI MVP Development** * **Description:** Need to build an MVP the *right* way? I'll architect and develop a **scalable MVP** from day one, using professional, spec-driven development practices. We'll build a strong foundation with clean, documented code and a modern stack (Node.js, React) to avoid the technical debt that plagues "vibe-coded" projects.

Freelance OpenAI Developer - Umair Jameel
Freelance OpenAI Developer5.0 (18 reviews)

● AI Powered development using Javascript and its frameworks/libraries like Angular, React, Next.js, Express, Node, Express, mongodb, mongoose etc. ● AI agents, prompt engineering, RAG, MCP servers, vibe coding. ● Full stack development in next.js including frontend, backend and databases. ● Architecture projects from scratch as well as building new features in existing projects. ● Debug and fix errors in existing projects. ● Database architecture using mongodb, postgres, ORMs like prisma and drizzle. ● Implement the best practices of code structure, logic building and making code efficient. ● Follow pure Object Oriented Programming and Data Structures for solving problems. ● REST API development using node and its frameworks (mainly express). ● Know best practices of writing test cases (it includes unit testing and automation testing). ● Decision making in choosing programming languages, frameworks and libraries for a particular project. ● Good communication skills and understanding client requirements. ● Do research and development to stay up to date with new technologies and always keen to adopt better approaches in solving any kind of problem. ● Experience in CI/CD, docker, github actions etc. ● Teaching experience for over 5 years now. These are some projects I have worked on: https://learnwith.flashclass.io/ https://www.getconch.ai/ https://eahousing.es/ https://www.blackbox.ai/ https://unation.com/

Freelance OpenAI Developer - Nishant Tiwari
Freelance OpenAI Developer

- A Full-stack software developer - Passionate about new technologies - Always ready to help - Experience .Net ecosystem, Java and react - Clean coder

Freelance OpenAI Developer - Nipun David
Freelance OpenAI Developer5.0 (6 reviews)

I help businesses and developers leverage the power of Generative AI, RAG (Retrieval-Augmented Generation), and Agentic workflow to build cutting-edge AI applications. With hands-on experience across Azure AI, OpenAI, AWS Bedrock, SageMaker, and Databricks, I specialize in designing and optimizing AI/ML solutions tailored to real-world challenges. What I Bring to the Table ✅ RAG & Multimodal RAG – Designing intelligent retrieval-based AI systems, optimizing embeddings, and leveraging vector databases. ✅ LLM Integration & Fine-Tuning – Experience with OpenAI, Claude, Mistral, and other open-source & proprietary models. ✅ Guardrails & AI Safety – Implementing security layers, prompt filtering, and bias mitigation in GenAI applications. ✅ Agentic Workflows – Building multi-agent AI architectures for automation, knowledge retrieval, and decision-making. ✅ Enterprise AI Deployment – Expertise in cloud-native AI deployments using Azure, AWS, and Databricks. ✅ AI Evaluation & Optimization – Fine-tuning RAG pipelines for better accuracy, latency, and cost-efficiency. Industries & Use Cases 📌 Conversational AI & Chatbots 📌 Knowledge Management Systems 📌 AI-Powered Search & Document Intelligence 📌 AI for Finance, Healthcare, Manufacturing, and Automation 🚀 Whether you're looking to optimize an existing AI pipeline or build an AI-powered product from scratch, I can help you navigate the complexities of Generative AI and LLM-based systems. Let’s build something intelligent together! 💡

Freelance OpenAI Developer - Calvin T
Freelance OpenAI Developer5.0 (432 reviews)

- 5+ projects in freelancing mobile+website games in Construct 3 for clients - 1 year of daily tutoring in Construct 3 and C++ - 3 years of school learning experience with Java - 5 months of tutoring in Unity game dev - published one commercial Construct 2 game on Wii U "Reversi 32" - tutored Intro to Computer Science material using Python with Minecraft every week since Dec 2019

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Frequently asked questions

How long do OpenAI projects normally take?

The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance OpenAI project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance OpenAI request on Codementor, check out our article.

How much does it cost to hire a freelance OpenAI developer?

We don’t charge anything when you post a freelance hiring request for OpenAI developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.

What makes Codementor OpenAI developers different?

We do a comprehensive technical and communications screen of all OpenAI developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing OpenAI developers’ user satisfaction rates.

What happens if I’m not happy with the freelancer’s work?

As a platform, we strive to ensure you’re always happy with your OpenAI project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.

For more answers to frequently asked questions, see here.

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