Hubert Janik

Hubert Janik Senior Full-Stack | AI Engineer Profile I’m a Full-Stack & AI Engineer with over 7 years of experience building high-performance web applications, intelligent automation systems, and AI-powered solutions. I specialize in both frontend and backend development while integrating modern AI technologies - including LLMs, retrieval systems, and autonomous agents - into realworld products. My work spans fintech, healthcare, and ecommerce, where I’ve delivered complex applications, optimized performance, and enhanced product intelligence using modern frameworks and AI-driven components. Whether developing new systems from scratch or upgrading existing platforms, I turn complex requirements into elegant, scalable, and secure technical solutions. I’m deeply committed to continuous learning, staying ahead of AI and software engineering trends, and bringing innovation to every project. I value collaboration, code quality, and building systems that provide real, measurable impact. Work Experience August 2020 – August 2025 Glasgow, UK Senior Full-Stack | AI Engineer ThoughtWorks With over 7 years of experience in full-stack engineering and AI-driven development, I designed and delivered advanced software ecosystems and intelligent automation for clients across fintech, healthcare, and e-commerce. My work combined deep engineering knowledge with modern AI technologies to build scalable, high-impact solutions. · Led the design and development of 25+ custom software platforms, integrating modern frontend frameworks, secure backends, and AI-powered features. · Designed, deployed, and maintained AI agents and autonomous workflows using LLMs, retrieval pipelines, and multi-step reasoning systems to automate decisionmaking and operational processes. · Built AI-driven integrations, including chatbot systems, data-processing agents, and automated assistants for customer service, analytics, and internal operations. · Optimized 30+ large-scale systems through architectural improvements, performance profiling, and AI-assisted enhancement strategies. · Integrated and upgraded 13 complex, legacy-to-modern systems, enhancing reliability, scalability, and long-term maintainability. · Developed and executed 200+ test procedures including automated pipelines and AIaugmented validation tools to ensure consistent quality. · Successfully managed 200+ short sprints and 50+ long-term projects, ensuring timelydelivery, clear communication, and alignment with client objectives. December 2018 – November 2020 Warsaw, Poland Jr. Full-Stack Developer Comarch I began my career at Comarch, where I built a solid foundation in full-stack development. My contributions included: · Writing 200+ unit tests to verify the functionality of UIs, backend processing, anddatabase interactions. · Providing Tier 2 support for 8+ systems, handling complex issues and ensuring smoothoperations for critical business applications. · Documenting 100% of technical speciåcations and application dependencies, ensuringclear communication across teams. · Actively participating in 10+ disaster recovery exercises, helping strengthen businesscontinuity and system resilience. Education December 2014 – July 2018 Poland B.S. in Computer Science University of Bialystok, Bialystok Completed extensive coursework in algorithms, software engineering, distributed systems,and database architecture. Developed strong analytical and problem-solving abilitiesthrough hands-on programming projects, research assignments, and collaborative systemdesign. Strengthened full-stack development skills by working with modern frameworks,building functional applications, and applying theoretical concepts to practicalengineering challenges. Skills Programming Languages &Frameworks JavaScript, TypeScript, React.js, Next.js, Vue.js, Node.js, Python, Flask, Django AI & Machine Learning LLM Integration, AI Agents, Prompt Engineering, NLP, Retrieval Augmented Generation (RAG), Autonomous Workflow Design, OpenAI API, Vector Databases Additional Skills: Responsive Design,API Integration, Git, AgileMethodologies, AI-PoweredAutomation Languages Polish Native English Fluent Databases & Tools MySQL, PostgreSQL, MongoDB, Firebase, Supabase APIs REST, REST, GraphQL, OpenAI API, Webhooks Additional Skills Responsive Design, API Integration, Git, Agile Methodologies, AI-Powered Automation