Kamil Zieliński
js. I enjoy turning complex requirements into scalable, high-performance web applications and I thrive in fast-paced, cross-functional teams.
About
I am a Frontend Developer with over 10 years of commercial experience, specializing in Angular, TypeScript and JavaScript, with full-stack capability in Python/Django and Node.js. I enjoy turning complex requirements into scalable, high-performance web applications and I thrive in fast-paced, cross-functional teams.
I have led large-scale migrations, improved SEO and implemented SSR, and I excel at delivering value for SaaS platforms, B2B systems, and social networks. My work blends solid engineering with a user-centric mindset to ship reliable features that users rely on daily.
- 10 years' experience
- Joined June 2026
Languages
- PolishFluent
- EnglishAdvanced
Industry experience
- Software & Internet
- Professional Services
Work experience· 9 roles
Delivered new product features across the Python/Django backend and Django/VanillaJS/AlpineJS frontend for a SaaS platform serving 100+ public libraries. Integrated external data services (DataAxle, Melissa), enabling enrichment of 500k+ records. Improved application stability through systematic bug fixing and performance enhancements.
Led the migration of a 200+ component Angular application from Angular 12 to Angular 21, including a large-scale refactor that cut build times by ~70%. Developed and maintained core product features used daily by 100+ B2B clients. Reduced the open bug backlog through systematic debugging and performance profiling.
Implemented server-side rendering (SSR) and SEO optimizations; designed and shipped new user-facing features in an Angular + GraphQL stack with Google Maps API.
Education
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