Hire the Top 3% of ChatGPT Developers in 48 Hours

Pedro is a technical leader in data science and engineering with experience building data pipelines and ML/AI systems focused on governance and accountability. He delivers impact through agentic solutions that combine domain expertise, agent design, and data and RAG pipelines to transform requirements into consistent, verifiable, and accurate DE/DS/AI systems. Pedro is experienced in agentic development, full-stack prototypes, and products agnostic to stack and cloud at any scale.

Karol is a highly experienced senior data scientist with a strong focus on NLP and wide AI applications. He has a unique academic background in physics and large-scale models, in addition to relevant experience in the customer-facing data science industry. He enjoys working with data and leading and implementing R&D projects. With his PhD in physics and the recent MBA degree, Karol combines easy technology and business.

Ivan is a results-driven data engineering expert with nine years of experience refining data management practices. Skilled in Python, SQL, and Google Cloud Services, he focuses on crafting scalable data pipelines and streamlining workflows to boost data warehouse efficacy. As a data engineering manager, Ivan guided a team of 18, fostering professional growth and promoting engineers to senior positions. He instituted Scrum methodologies to optimize project delivery and stakeholder satisfaction.

Martin has several years of experience in machine learning and full-stack development while working for companies like Meta, Picsart, and YerevaNN Research Lab. He specializes in full-stack web development and AI and has completed many projects in this field. Martin is an exceptional communicator—with frequent reachouts—and has experience working in all types of teams, from small (five members) to large companies like Facebook.

David is a result-oriented, pragmatic, senior software engineer specializing in Python, FastAPI, and AI engineering, with 18+ years of back-end experience in multiple stacks. He's recently designed and built production-grade Python back ends and AI-powered apps. A former Java/Spring Boot lead, now focused on Python ecosystems, React/Next.js front end, and AI-driven innovation, he has proven ability to ship robust systems quickly, mentor teams, and architect scalable cloud-native solutions.

Leonardo is a senior AI engineer with 10+ years of experience shipping production AI, including six years delivering engagements through Toptal. He specializes in LLM agents, retrieval-augmented generation (RAG), and LLM evaluation and LLMOps, working end-to-end from prototype to deployed services. At Microsoft, Leonardo built an LLM evaluation infrastructure. On recent Toptal engagements, he built RAG copilots and automated MLOps pipelines.

George is a results-driven data scientist who brings a diverse skill set and rich experience to the table. His expertise lies in data translation and a versatile toolkit, including Python, SQL, and machine learning. George excels at distilling complex findings into actionable and comprehensible insights, making data accessible and impactful for stakeholders.

Alex is an accomplished full-stack developer with a distinctive edge in computer security and reverse engineering. His expertise spans developing full-stack web applications and mobile applications for Android. Alex's strong problem-solving skills and diverse technical skillset ensure he delivers optimal solutions for even the most intricate challenges.

Sunny has 16 years of experience working on web development and programming. His specialties in building web and mobile applications, websites, and web services lie in .NET technologies, PHP, JavaScript, React, React Native, AngularJS, and jQuery. Over the years, Sunny has accumulated expertise through finance and accounting, education, and healthcare projects, providing solutions for B2B, eCommerce, ERP, and teaching portals.

Apurbalal graduated from IIT Madras, India. Soon after graduating, he moved to Japan to work in Mercari as a software engineer. He has developed user-facing features for both web and mobile apps used by millions of users every day. Apurbalal has professional experience in developing web, Android, and iOS applications. He values writing clean, readable, testable, and scalable code and loves working on complex front-end projects.

Samuel, a React expert with 10+ years of experience, specializes in React, Next.js, and React Native, building reliable, user-friendly apps. He’s delivered solutions for top eCommerce platforms and secure government systems. Leading teams, he creates seamless web and mobile apps for SaaS and B2B clients, ensuring high-quality results for enterprise and public sector needs, trusted by global tech leaders.