Available — open to remote

Jakub Zagórski

Senior Frontend Developer

Gdańsk, Poland

Summary

Senior Frontend Engineer with 6 years of experience building React, Next.js, React Native and Svelte applications. Experienced in frontend architecture, microfrontends, design systems and performance optimisation across web, mobile and Smart TV platforms.

Work Experience

Senior Frontend Developer·Avenga

Jun 2025 — Present

Owned the move to microfrontends: evaluated the options, then took the chosen architecture from proof of concept into production.
Built the microfrontend shell and its consumer applications on Module Federation 2.0 and Rspack, so each product team deploys independently.
Maintained the in-house React component library used across product teams, keeping its API stable as consumers migrated onto it.

React
TypeScript
Module Federation 2.0
Rspack
Jest
RTL
microfrontends
design system

Senior Frontend Developer·Webalize

Feb 2025 — May 2025

Shipped a fullstack platform for exploring tourist attractions on interactive maps as the sole frontend engineer: data model, admin tooling and map layer.
Built Next.js applications end to end, from Prisma schema and server-side logic through to the interface.

Next.js 15
TypeScript
Prisma
Tailwind CSS
React Hook Form
Leaflet

Frontend Developer·OKE Software

Sep 2023 — Oct 2024

Owned features across a suite of cross-platform Smart TV applications in a monorepo with a shared component layer.
Tuned rendering and memory for TV hardware, where the performance budget is a fraction of the browser's, and adapted shared components to per-platform requirements.
Handled video playback and stream state, including Theoplayer integration and async edge cases modelled with RxJS.
Reviewed teammates' code and kept conventions consistent across platform targets.

Svelte
TypeScript
RxJS
SCSS
Theoplayer
monorepo

Frontend Developer·IT SOL

Feb 2023 — May 2023

Built an exam-registration platform with a custom CMS: rich text editing, post management, and in-place content editing for administrators.
Owned the data-heavy side of the application — server state, sortable tables, validated multi-step forms.

React
TypeScript
Material UI
Tiptap
TanStack Query
TanStack Table
React Hook Form
Yup

Frontend / Mobile Developer·BinarApps

Jul 2022 — Jan 2023

Shipped two React Native applications: an animal-abuse case reporting app with photo and video upload and live case status, and a travel booking app covering packages, flights and accommodation.
Contributed to the company's open-source Expo starter template.
Worked cross-functionally with design and backend on new features from specification to release.

React Native
Expo
TypeScript
React Navigation
Firebase
React Query
Native Base

Frontend Developer·Black Core

Oct 2020 — Jun 2022

Led the frontend team's work and was the direct point of contact for business clients, covering scoping, expectations and delivery.
Defined REST API contracts with the backend team so integration never became the bottleneck.
Delivered four products: a medical test-and-order platform, an ad-campaign builder with reporting, a Next.js video learning platform on Strapi/GraphQL, and a CRM.

React
Next.js
TypeScript
GraphQL
Apollo
Strapi
MobX
Styled Components
Storybook
Docker
Yarn Workspaces

Skills

Languages: TypeScript, JavaScript, HTML, CSS, SASS/SCSS
Frameworks: React, Next.js (App Router), React Native, Expo, Svelte, Express
Architecture: Microfrontends, Module Federation 2.0, component libraries, monorepos, shared design systems
Data & state: REST, GraphQL, Apollo, Prisma, TanStack Query, Redux, MobX, RxJS, Context API
Styling & UI: Tailwind CSS, Styled Components, Material UI, Radix UI, Storybook, Figma
Testing: Jest, Vitest, React Testing Library, Playwright, Cypress
Performance: Core Web Vitals, Lighthouse, render and bundle profiling, low-power device optimisation
AI-assisted: Claude Code, OpenAI Codex, GitHub Copilot, Cursor, LLM API integration
Accessibility: WCAG 2.2, ARIA, semantic HTML, keyboard navigation, screen-reader testing
Tooling: Git, Docker, Rspack, Webpack, Yarn Workspaces, npm, ESLint

Education

Introduction to Programming Using JavaScript
Microsoft — Exam 98-382
2020
Sound Engineering Technician
Academy of Sound Engineering, Gdynia
2018 — 2019
Information Systems Technician
Center of Vocational Education, Gdańsk
2016 — 2017

Languages

English
C1
Polish
Native

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