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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.…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.

Kamil Zieliński

Front-End Developer, Full Stack Developer, Web Developer, +2

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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.…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.

Available to hire

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.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Polish

Fluent

English

Advanced

Work Experience

Fullstack Developer at Promoship — Growing Libraries

March 1, 2025 - May 1, 2026

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.

Frontend Developer at Ideamotive — client: Pacemo / Memcare

March 1, 2025 - Present

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.

Frontend Developer at Promoship — YouMap

September 1, 2023 - March 1, 2025

Implemented server-side rendering (SSR) and SEO optimizations; designed and shipped new user-facing features in an Angular + GraphQL stack with Google Maps API.

Frontend Developer at Promoship — HID Global (Ticketing)

July 1, 2020 - September 1, 2023

Enhanced and maintained mission-critical ticketing features with a strong focus on code quality. Authored technical documentation to enable seamless project handovers between teams.

Frontend Developer at Promoship — PITCHED

March 1, 2019 - July 1, 2020

Built and tested new functionalities aligned with client requirements. Resolved system-level issues, delivering high-performance frontend solutions.

Fullstack Developer at Promoship — Prodwatch

July 1, 2018 - March 1, 2019

Rewrote a legacy AngularJS system into Angular 6 with a NestJS backend. Introduced unit tests during the rewrite, achieving ~80% coverage on core modules.

Fullstack Developer at Promoship — SchuelerNachhilfe1.de

October 1, 2017 - July 1, 2018

Educational platform for managing tutoring sessions, payments and schedules; delivered robust features across frontend and backend components.

IT Trainer at WOW School

September 1, 2017 - June 1, 2018

Taught programming to children and teenagers: Scratch, App Inventor, KODU and Game Froot for younger students; Unity and web technologies for older ones.

Fullstack Developer at Promoship — Cloudware

April 1, 2016 - October 1, 2017

Data Center Manager: Data center management system with 2D visualization tools. Worked directly with clients to implement custom solutions and delivered comprehensive test coverage ensuring high reliability.