Krzysztof Wisznarewski
Founding Principal Team Lead at mysite.ai
Tarnowo Podgórne, Greater Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolKrzysztof Wisznarewski is a founding principal team lead and seasoned full-stack engineer with a decade of experience building high-performance, user-focused web applications across e-commerce, automation, and AI-driven products. He has progressed from developer to tech lead, modernizing legacy stacks with React, TypeScript, and Node.js while delivering production integrations for payment systems and cloud cost tooling. Krzysztof excels at bridging product, UX, and engineering—mentoring teams, improving QA collaboration, and designing scalable architectures that reduce technical debt. Recently he has focused on applied AI and LLM integrations, building toolkits and AWS Bedrock-backed solutions to automate user workflows. Based in Greater Poland, he combines hands-on implementation with strategic leadership and a habit of rapidly mastering new technologies and domains. An underrated strength is his track record of shipping reliability improvements (unit tests, API hardening, architecture optimizations) that quietly accelerate delivery and lower operating costs.
10 years of coding experience
11 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at Uniwersytet im. Adama Mickiewicza w Poznaniu
English, Polish
Github Skills (20)
vsix10
visual-studio-extension10
vscode9
visual-studio8
textmate8
laravel8
visual-studio-code8
directions7
photo7
textarea7
syntax-highlighting6
highlightjs6
pixelfed6
abstract-syntax-tree6
react5
Programming languages (5)
Github contributions (5)
Ulthes/ulthes
Sep 2023 - Jan 2025
Contributions:4 pushes, 1 branch in 1 year 3 months
Ulthes/exercism
Jun 2023 - Jul 2023
My solutions to exercises on Exercism written in Python language.
Contributions:8 PRs, 12 pushes, 6 branches in 12 days
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