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I am a Full Stack Engineer with comprehensive expertise across frontend, backend, and cloud technologies. I enjoy building end-to-end projects from design to final production, collaborating closely with clients to deliver scalable, secure, and cost-efficient applications. With a strong foundation in JavaScript, TypeScript, React.js, Python, and AWS services, I prioritize responsive design, testing, and continuous integration to optimize user experiences and meet business goals. I love learning new tools and methodologies and sharing knowledge with my team to drive successful project outcomes.…I am a Full Stack Engineer with comprehensive expertise across frontend, backend, and cloud technologies. I enjoy building end-to-end projects from design to final production, collaborating closely with clients to deliver scalable, secure, and cost-efficient applications. With a strong foundation in JavaScript, TypeScript, React.js, Python, and AWS services, I prioritize responsive design, testing, and continuous integration to optimize user experiences and meet business goals. I love learning new tools and methodologies and sharing knowledge with my team to drive successful project outcomes.

Kris Rzepka

Full Stack Developer, Developer, Programmer, +2

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I am a Full Stack Engineer with comprehensive expertise across frontend, backend, and cloud technologies. I enjoy building end-to-end projects from design to final production, collaborating closely with clients to deliver scalable, secure, and cost-efficient applications. With a strong foundation in JavaScript, TypeScript, React.js, Python, and AWS services, I prioritize responsive design, testing, and continuous integration to optimize user experiences and meet business goals. I love learning new tools and methodologies and sharing knowledge with my team to drive successful project outcomes.…I am a Full Stack Engineer with comprehensive expertise across frontend, backend, and cloud technologies. I enjoy building end-to-end projects from design to final production, collaborating closely with clients to deliver scalable, secure, and cost-efficient applications. With a strong foundation in JavaScript, TypeScript, React.js, Python, and AWS services, I prioritize responsive design, testing, and continuous integration to optimize user experiences and meet business goals. I love learning new tools and methodologies and sharing knowledge with my team to drive successful project outcomes.

Available to hire

I am a Full Stack Engineer with comprehensive expertise across frontend, backend, and cloud technologies. I enjoy building end-to-end projects from design to final production, collaborating closely with clients to deliver scalable, secure, and cost-efficient applications.

With a strong foundation in JavaScript, TypeScript, React.js, Python, and AWS services, I prioritize responsive design, testing, and continuous integration to optimize user experiences and meet business goals. I love learning new tools and methodologies and sharing knowledge with my team to drive successful project outcomes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Advanced

Polish

Fluent

Work Experience

Full Stack Developer at Freelancer/Upwork

May 1, 2025 - Present

Responsible for building end-to-end projects from system architecture through development, testing, and production launch. Collaborated with clients to gather requirements and defined technical specifications. Designed intuitive UIs using Figma and developed responsive web applications using React, JavaScript, and TypeScript. Implemented unit and integration testing with Jest, ensured cross-browser compatibility using Browserstack, and built scalable backend systems with Node.js and Python. Integrated multiple AWS services including Lambda, S3, DynamoDB, API Gateway, and CloudFront. Automated CI/CD pipelines using GitHub Actions and provided post-launch maintenance and support.

Full Stack Developer at IT Career Switch

April 30, 2025 - August 26, 2025

Delivered end-to-end solutions from requirements gathering through deployment using JavaScript, TypeScript, React.js, and Redux. Integrated React Hooks and Context API for global state management, optimized performance with code-splitting and lazy loading improving load times by up to 40%. Developed mobile-first responsive applications enhancing user engagement with Lighthouse and Core Web Vitals. Designed database solutions using PostgreSQL improving application response times. Built Node.js server components for third-party API integration. Successfully met project milestones through agile methods and led knowledge-sharing sessions to improve team productivity.

Transport Office Coordinator at Massey & Wilcox Ltd.

February 1, 2024 - August 26, 2025

Supported logistics operations by managing shipment planning, routing, and driver communication. Maintained digital records and logistics software documentation, handled delivery queries and route adjustments while managing time-sensitive updates. Developed multitasking and customer service skills in a computer-based environment.