Senior Frontend Engineer — Gdynia, PL / Remote

Michał Lach — Senior Frontend Engineer. Building scalable frontend systems for complex products.

Since 2013, I have delivered React and TypeScript products across enterprise AI, fintech, media, healthcare, and IoT.

2013 Building for
production since
06 Engineering
organizations
04 Open-source
projects featured
01

Experience

Production frontend delivery since 2013, across product, platform, backend, and design teams.

N-24 · Enterprise / AI May 2024 — Present

Nordea

Senior Frontend Engineer

Building internal platforms for API onboarding, enterprise services, secure AI access, and Redis operations — turning complex platform workflows into usable tools for engineering teams.

Enterprise platformAPI integrationsAI toolingSecurity
M-20 · Payments / Media Aug 2020 — Apr 2024

MasterBorn

Frontend / Lead Frontend Engineer

Led React and TypeScript delivery across payment processing, sports video streaming, cycling analytics, and medical-device inspection products, balancing shared architecture with distinct product needs.

ReduxNext.jsTypeScriptPaymentsVideo streaming
J-19 · IoT / Smart city Feb 2019 — Jul 2020

JIT Team

Frontend Engineer

Built hybrid PWA workflows for ship inspections and frontend systems for smart-city and IoT operations, translating field processes into dependable product interfaces.

ReactMaterial UIPWAIoTInspection tools
Earlier experience 2013 — 2020
S-16 · Marketplaces Jul 2016 — Jan 2019

Schibsted Tech Polska

UI Developer / Lead Frontend Developer

Led frontend development for the Styletime.no booking marketplace, including recommendations and reusable component architecture.

E-15 · Enterprise May 2015 — Jun 2016

EPAM Systems

UI Software Developer

Delivered internal enterprise interfaces, reviewed frontend work, and contributed to shared engineering standards.

M-13 · Fintech Aug 2013 — Apr 2015

Misys

Software Developer

Developed financial risk-analysis interfaces, maintained cross-browser compatibility, and introduced end-to-end testing practices.

02

Side projects

A featured desktop product, followed by focused tools for music workflows and a better web.

More open-source work 03 repositories
GH-01 · Rust Open GitHub ↗

Bandcamp Archiver

CLI tool for archiving Bandcamp albums, built as a focused utility around collection preservation and local music workflows.

RustCLIMusic archive
GH-02 · TypeScript Open GitHub ↗

Spotify TUI

Lightweight terminal client for Spotify, exploring focused command-line music control through a text interface.

TypeScriptTerminal UISpotify
GH-03 · Browser Extension Open GitHub ↗

YouTube Subscriptions Fixer

Chromium extension for Chrome and Brave that restores a compact subscriptions view on YouTube.

TypeScriptChromiumYouTube
03

Capabilities

The engineering capabilities I use to make complex frontend products easier to build, operate, and evolve.

Architecture

Scalable React and Next.js applications, reusable component systems, SSR, and frontend platforms.

Data & state

Redux Toolkit, Zustand, RTK Query, GraphQL, Apollo Client, and REST integrations.

Quality

Performance, accessibility, Jest, React Testing Library, Vitest, and end-to-end testing.

Delivery

TypeScript, Vite, Webpack, Docker, GitHub, Jenkins, TeamCity, and maintainable CI/CD workflows.

AI tooling

Ollama, GitHub Copilot, vLLM, and llama.cpp for local and enterprise AI workflows.

04

About

I build maintainable frontend platforms that make complex products easier to ship, operate, and evolve.

Profile

Building production frontend systems since 2013, working across product, backend, design, and platform teams.

Industries

Fintech, AI platforms, enterprise tooling, healthcare workflows, media products, IoT, and smart city systems.

Education

Bachelor's Degree in Information Technology, plus Cambridge First Certificate in English at B2 level.

05

Let's build something

Open to frontend roles, architecture-heavy product work, and teams that care about building maintainable and usable systems.