Available to hire
Lead Full Stack & AI Engineer with 10+ years of experience delivering end-to-end software across enterprise, SaaS, and product environments. Strong foundation in .NET (C#), Node.js, Python, React/Next.js, and Angular—focused on building clean, secure, and scalable platform features.
Proven expertise in cloud-backed systems (AWS/Azure/GCP), CI/CD and DevOps, microservices and multi-database architectures (PostgreSQL, MS SQL Server, MongoDB), and production-ready AI integrations (LLM workflows, OpenAI APIs, prompt orchestration). Known for optimizing performance, raising quality through testing and documentation, and collaborating effectively to ship reliable software.
Skills
Experience Level
Expert
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Language
Polish
Fluent
Ukrainian
Fluent
English
Advanced
Work Experience
Lead Full Stack &AI Engineer at Nielsen
September 1, 2024 - May 1, 2026Architected scalable full-stack applications using Next.js, React, Angular, Node.js, and .NET Core, designing robust frontend/backend and multi-database layers for business-critical workflows. Engineered high-performance APIs and intelligent features integrating ML models and OpenAI APIs with prompt orchestration into production-ready platforms, leveraging TypeScript, C#, SQL, and CI/CD pipelines (Azure DevOps/AWS). Optimized Node.js and ASP.NET Core microservices and database queries across PostgreSQL and MS SQL Server to improve latency, scalability, and security. Implemented automated testing, quality gates, and technical documentation for AI and full-stack releases, establishing rigorous code review standards to increase deployment confidence and team velocity.
Lead Full Stack &AI Engineer / Lead Software Engineer at Nielsen
September 1, 2024 - May 1, 2026Architected scalable full-stack applications using Next.js, React, Angular, Node.js, and .NET Core. Designed robust frontend, backend, and multi-database layers for business-critical workflows. Engineered high-performance APIs and intelligent features integrating machine learning models and OpenAI APIs with prompt orchestration into production-ready platforms. Optimized backend services and database queries across PostgreSQL and MS SQL Server, tuning Node.js and ASP.NET Core microservices for latency, scalability, and security improvements. Established automated testing, quality gates, and technical documentation for AI and full-stack releases, strengthening code review standards and increasing deployment confidence.
Lead Full Stack & AI Engineer at Nielsen
September 1, 2024 - May 1, 2026Architected scalable full-stack applications using Next.js, React, Angular, Node.js, and .NET Core, designing robust frontend, backend, and multi-database layers for business-critical workflows. Engineered high-performance APIs and intelligent features by integrating Machine Learning models, OpenAI APIs, and prompt orchestration into production platforms with TypeScript, C#, SQL, and cloud CI/CD pipelines (Azure DevOps/AWS). Optimized backend systems and database queries across PostgreSQL and MS SQL Server, tuning Node.js and ASP.NET Core microservices and service integration paths to improve latency, scalability, and security. Established automated testing, quality gates, and technical documentation for AI and full-stack releases, increasing deployment confidence and improving team velocity through rigorous code reviews.
Lead Software Engineer at Nielsen
September 1, 2024 - May 1, 2026Architected scalable full-stack applications using Next.js, React, and Node.js, designing robust frontend, backend, and data layers for business-critical workflows. Engineered high-performance APIs and intelligent features integrating ML/AI capabilities into production-ready platforms using TypeScript, SQL, and cloud CI/CD pipelines. Optimized Node.js microservices and database queries to improve latency, scalability, and security, establishing automated testing and technical documentation and strengthening code review standards for release confidence and faster delivery.
Senior Software Engineer at Jasper
July 1, 2020 - August 1, 2024Delivered end-to-end SaaS features and intelligent data workflows using React, Next.js, and Node.js. Modernized legacy architectures into high-performance TypeScript/Next.js modules and built reusable frontend patterns, improving maintainability and development velocity. Architected and integrated AI/ML capabilities into SaaS features to enable personalization and automation, and optimized full-stack performance by refining service boundaries, improving data access patterns, and implementing rigorous CI/CD and automated testing pipelines.
Founding Software Engineer at HigoSense
October 1, 2017 - June 1, 2020Architected early-stage product infrastructure from loosely defined requirements, delivering scalable Next.js frontends, robust Node.js backends, and optimized database layers aligned with business goals. Engineered high-throughput REST APIs and SQL-backed data pipelines and integrated AI/ML capabilities to support advanced product workflows and data-driven features. Led technical strategy across full-stack architecture, DevOps, and code quality and mentored teams through design tradeoffs, code reviews, and AI/ML engineering best practices to accelerate delivery.
Software Development Manager at Redwerk
July 1, 2014 - August 1, 2017Led enterprise software delivery across distributed engineering teams, coordinating Java, frontend, backend, database, and DevOps workstreams. Conducted architecture reviews and guided performance improvements and delivery planning to strengthen scalability, maintainability, and reliability across multi-layer applications. Supported Agile execution with code reviews, technical documentation, and quality-focused delivery practices to improve output and stakeholder visibility.
Software Development Manager at Accenture Portugal
July 1, 2014 - August 1, 2017Led enterprise software delivery across distributed engineering teams, aligning Java, frontend, backend, database, and DevOps workstreams with technical and business priorities. Directed architecture reviews, performance improvements, and delivery planning to strengthen scalability, maintainability, and reliability across multi-layer applications. Guided developers in Agile execution, code review practices, technical documentation, and quality-focused delivery to improve output and stakeholder visibility.
Full Stack Java Developer at Redwerk
May 1, 2012 - June 1, 2014Engineered full-stack Java applications with backend services and JavaScript interfaces, implementing SQL data access and REST-style integrations. Optimized application logic, database queries, and integration flows to improve performance, reduce defects, and increase maintainability. Delivered secure and maintainable code and collaborated with cross-functional teams on testing and technical documentation.
Full Stack Java Developer at Accenture Portugal
May 1, 2012 - June 1, 2014Engineered full-stack Java applications with backend services, JavaScript interfaces, SQL data access, and REST-style integrations, supporting CI practices for enterprise use cases. Optimized application logic, database queries, and integration flows to improve performance, reduce defects, and increase maintainability. Delivered clean, secure, and maintainable code while collaborating with cross-functional teams on testing and technical documentation.
Full Stack Developer at UKEESS Software House
August 1, 2010 - April 1, 2012Developed web application features across frontend, backend, database, and integration layers to improve user-facing functionality and dependable delivery. Enhanced responsive interfaces and API-connected workflows, and delivered SQL-backed modules while maintaining code quality, documentation, and repeatable testing practices.
Full Stack Developer at Bliss Applications
August 1, 2010 - April 1, 2012Developed web application features across frontend, backend, database, and integration layers, improving user-facing functionality and reliable delivery for client products. Enhanced responsive interfaces and API-connected workflows, built SQL-backed modules while maintaining code quality and documentation, and supported repeatable testing practices.
Junior Software Developer at UKEESS Software House
August 1, 2009 - July 1, 2010Implemented application features and fixed defects while improving frontend and backend fundamentals through hands-on software development. Contributed to enterprise development practices and quality improvements.
Junior Software Developer at Bliss Applications
August 1, 2009 - July 1, 2010Implemented application features and fixed defects while strengthening frontend and backend fundamentals through hands-on delivery. Improved quality through debugging, iteration, and adherence to repeatable development and testing practices.
Software Engineer Intern at HP
June 1, 2008 - July 1, 2009Contributed to software engineering tasks including debugging, documentation, and quality improvements, building foundational experience with enterprise development practices.
Education
Bachelor's degree, Computer Science at Lviv Polytechnic National University
April 1, 2004 - March 1, 2008Bachelor of Science in Computer Science at Columbia University
January 1, 2004 - May 1, 2008Bachelor of Science in Computer Science at Columbia University
January 1, 2004 - May 1, 2008Bachelor of Science in Computer Science at Columbia University
January 1, 2004 - May 1, 2008Bachelor of Science in Computer Science at Columbia University
January 11, 2030 - May 1, 2008Bachelor of Science in Computer Science at Columbia University
January 1, 2007 - May 1, 2008Bachelor of Science in Computer Science at Columbia University
January 1, 2004 - May 1, 2008Bachelor of Science in Computer Science at Columbia University
January 11, 2030 - May 1, 2008Qualifications
Industry Experience
Software & Internet, Professional Services, Computers & Electronics, Financial Services, Other, Education
Skills
Experience Level
Expert
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Intermediate
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Beginner
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