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Freelance GPT Developer - Qaiser Mehmood
Freelance GPT Developer5.0 (7 reviews)

I don't just write code — I **define the architecture**. For over two decades I've been the person CTOs and lead developers call when a system is *failing under load*, a migration is at risk, or an AI integration needs to be done **right the first time**. With **21 years** of hands-on architecture experience, I specialize in **C#, .NET, Blazor, ASP.NET Core, SQL, Python**, and AI agents built with **Semantic Kernel, LangGraph, and custom tool-calling pipelines**. I design and deliver systems where performance, reliability, and intelligent automation aren't optional — they're the baseline. I've helped teams migrate from legacy .NET Framework to .NET 8, integrate AI into production pipelines, and recover systems failing under scale — without full rewrites. I've shipped AI to **production** — not to a Jupyter notebook. I'm the creator of **FreeAIVoice** ([freeaivoice.com](https://freeaivoice.com)) — a live AI voice platform with AI Voice Generation, Voice Cloning, and Speech-to-Text across **30+ languages** and a developer API. I know what it takes to build AI products that handle real users, real traffic, and real failure modes. --- **Here's where I'm most useful to you:** - **The AI Integration Trap** — You've been asked to add AI to your existing .NET system but don't know whether to use *Semantic Kernel*, raw OpenAI APIs, or a Python sidecar. I've made that decision dozens of times. I'll make it faster and safer for you. - **The Blazor Bottleneck** — Your Blazor app is slow, state management is tangled, and you're unsure if you chose *Server or WASM* incorrectly. I can diagnose what went wrong and map a clean path forward — often in a single session. - **The Legacy Modernization Cliff** — You have a 10-year-old .NET system that needs AI or modern tooling but wasn't designed for it. I specialize in *incremental refactoring paths* that don't require a full rewrite and don't break what's already working. --- **What I Do Best:** - **Software Architecture & System Design** — scalable, maintainable systems from greenfield to enterprise - **AI Agent Development** — production-grade agents with Semantic Kernel, LangGraph & AutoGen — *not demos* - **Blazor & ASP.NET Core** — Server, WASM, hybrid — full-cycle development and performance tuning - **Python & AI Automation** — RAG pipelines, workflow automation, voice AI, LLM integrations - **Legacy .NET Modernization** — refactoring strategy, migration paths, incremental upgrades - **Architecture Audits & Code Reviews** — identifying structural risks before they become production incidents - **Debugging Complex Systems** — when the stack trace doesn't tell the whole story

Freelance GPT Developer - Tanisha Bhayani
Freelance GPT 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 GPT Developer - Ezequiel Mansilla
Freelance GPT Developer

Accomplished innovative System Engineer with more than 10-years-experience working with multidisciplinary teams and technologies building enterprise solutions for private sectors. Provide expertise and services at all levels of execution, assuming high levels of responsibility for their delivery. Have performed the roles of Software Developer and Front End Technical Lead for numerous projects requiring the execution of all aspects of design and development of new value added to software solutions. Most of the projects were related to health care. Really proactive and learning spirit. I like working in groups because of the synergy in them. Skills and knowledge essential for solving problems and improvements.

Freelance GPT Developer - Erum Mehmood
Freelance GPT Developer5.0 (76 reviews)

Embark on a transformative coding journey with me, a visionary computer science expert and a passionate mentor, bringing over two decades of rich expertise in the dynamic realms of programming, data science, and software architecture. My technical skills span across a broad spectrum, including mastery in programming languages like Python, Java, C++, C, and Scala, along with a profound understanding of algorithms, data structures, and the complex art of software design. My research interests include big data analysis, semi-stream join algorithms, and real-time data warehousing. As a mentor, I've illuminated the path for students globally, from prestigious universities in the USA, Australia, Canada, and the UK, in a vast array of subjects from Big Data Analytics to Cyber Security, and advanced programming languages. Currently, I am a lecturer of Computer Science at a Higher Education Institute. My academic prowess is underscored by a **PhD** in Computer Science, with my doctoral thesis titled: "Integrated Real-Time Distributed Stream-Disk Processing Architecture for Unstructured Big Data". Join me on codementor, where together, we'll navigate the intricacies of technology, unleashing the potential to innovate, solve real-world problems, and excel in your programming career.

Freelance GPT Developer - Michele Mazzamuto
Freelance GPT Developer5.0 (6 reviews)

I'm specialized in **machine learning**, **computer vision**, and gaze analysis. I have been involved in several research projects, including work on gaze estimation algorithms and mixed reality applications. In addition to my academic work, I actively review for international conferences and have experience developing real-world applications in both academia and industry. As an expert in **Python**, **C#**, **Unity**, **CUDA**, and **mixed reality**, I am passionate about mentoring and sharing knowledge with others in the tech community.

Freelance GPT Developer - Greg Gorlen
Freelance GPT Developer5.0 (458 reviews)

I'm a full stack software engineer, technical writer and computer science educator. I enjoy testing, debugging, refactoring, application design, maintaining projects and teaching. My primary technologies are JavaScript, TypeScript, React, Express (PERN stack), Playwright, Puppeteer, Python, Flask and C. See my [Stack Overflow tags](https://stackoverflow.com/users/6243352/ggorlen?tab=tags) for more technologies ordered roughly by my interest and experience. In addition to Stack Overflow, I'm active on [Code Review Stack Exchange](https://codereview.stackexchange.com/users/171065/ggorlen). Feel free to peek at a few of these reviews to get a sense of the insights I can offer your code. I'm looking forward to hearing about your project! _<sub>Profile picture by the wonderful [Emily Huston](https://emilyhuston.github.io) ❤️</sub>_

Freelance GPT Developer - Patrick Igwe
Freelance GPT Developer5.0 (55 reviews)

I'm a highly driven designer, programmer and tech-entrepreneur. I specialize in programming, designing, thinking and validating risky assumptions in design, thinking just like users and delivering great products and, managing technical debt with business needs, enhancing the projects reach.

Freelance GPT Developer - Georges Bandali Rattel
Freelance GPT Developer5.0 (25 reviews)

After starting his career in development at a young age, with no access to the Internet, Georges taught university students as a way to learn coding. Georges earned his first certifications from UNESCO, CISCO CCNA/CCNP before majoring in Computer Science. In addition, while pursuing his BS Degree, Georges earned his ECCouncil Certified Ethical Hacker Certificate. Georges then scaled up and revamped the structure of many Startups in Lebanon, Syria, South Africa and the US. He consulted and developed many solutions that spanned over different industries such as Security, Fleet Management, F&B, ERPs, CRMs and Networking Solutions. Although Georges was a full timer with two companies in parallel, while consulting in the weekends and managing freelance projects, it was a challenge; yet, Georges sought to gain as much experience as possible where he automated most of his work. Georges now codes in different languages simultaneously and proficiently where he believes in Security, Clean Code and Scalability to be the main pillars in any project.

Freelance GPT Developer - Faizan Ali
Freelance GPT Developer5.0 (22 reviews)

> 100% success rate - full refund if I cannot solve your problem. Are you a software engineer dealing with tough problems? Recent bootcamp/college grad feeling overwhelmed? New job and struggling to keep up? Obscure technical problems in your code? I can help! <sub>My rate reflects my success guarantee and familiarity with the latest tech. You're paying for quality.</sub> ### Background ___ Seasoned full-stack Silicon Valley engineer. 7+ years of experience building & deploying robust applications from conception to production at large-tech company scale and startups. My core principle is **empathy** - understanding your unique situation & background allows me to work with you to develop the ideal solution for your problems. I enjoy teaching and promise you will leave our session having learned something new. ### Skills ___ I specialize in the Javascript stack with expertise in Typescript. Well-versed in building backend services and serverless functions in Node.js, talking to SQL/no-SQL databases, and frontend applications in React and Next.js. I can help in every step of the stack - from app conception to deployment (AWS, Vercel) and scaling, including local development best practices, testing, logging/alerting, and structure/layout. Typescript is my magic weapon. I pride myself on strong written + oral communication skills, and I know how to convey the right amount of information in a package unique to your understanding of a topic. <sub>If you want expertise beyond my listed skills, reach out. I may offer a discount if you need to accomplish a task using technology I'm interested in learning about.</sub>

Freelance GPT Developer - Ilian Z.
Freelance GPT Developer5.0 (19 reviews)

I am an engineering leader and entrepreneur with a 14-year career that includes founding three startups where I served as CTO (one successful exit) and driving development of products with millions of users. I currently serve as Senior Engineering Manager for a big tech company. In 2015 I founded Earny, a consumer advocate service that helps shoppers maximize their spending through automatic price protection (acquired in March 2021). I founded Earny to help users make intelligent shopping decisions by leveraging proprietary price-tracking technology and pricing trends to get automatic refunds on price drops, add items to watchlist, and earn cashback. The company raised $14M in funding, received national press coverage (Good Morning America, CNN, Forbes, WSJ, HuffPo, etc.), was named a "Top 50 Startup to Watch" by Business Insider, and the iOS app trended for several weeks as a Top 10 in the finance category. My experience includes building and leading high-performing software engineering teams, setting technical vision, designing complex systems and architecture, and guiding teams in execution. In addition to my experience, I earned a Master's degree in Computer Science and Cybersecurity from a top-notch French Engineering school.

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Frequently asked questions

How long do GPT 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 GPT 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 GPT request on Codementor, check out our article.

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

We don’t charge anything when you post a freelance hiring request for GPT 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 GPT developers different?

We do a comprehensive technical and communications screen of all GPT 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 GPT 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 GPT 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.

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