~/kamil7x.dev/cv
Curriculum Vitae
Senior front-end engineer with 10+ years in React and TypeScript. I focus on clear UI, maintainable code, and close work with design and backend. Based in Białystok. Open to roles in Poland and to selected EU remote opportunities where day-to-day communication stays practical.
I use AI tools as part of my development workflow and have applied them to personal projects, including this site.
I occasionally write about TypeScript and React at dev.to/kamil7x.
Experience
Aug 2025 – Present
Senior React Engineer
SpyroSoft• Next.js + TypeScript platform for route planning, activity recording, and community content (10-person FE team). • Own features across the main app and a separate public/account Next.js codebase, with Redux, styled-components, and REST microservices. • Work closely with PM, QA, design, and backend on feature delivery.
Aug 2023 – May 2025
Senior Front-end Developer
The Software House• Longest client engagement: charity donations product with payment flows and external integrations. • Freelancer and volunteer marketplace applications, including escrow-style payments on the freelancer platform. • Delivered in React, TypeScript, and Next.js with Material UI and Tailwind, as part of cross-functional teams.
Dec 2021 – Jul 2023
Senior Front-end Developer
SoftwareHut• Lead front-end on a telemedicine SaaS platform for doctors and emergency staff reviewing patient measurements from a companion mobile app and Bluetooth devices. • Critical-reading workflows including ambulance dispatch, with patient contact via chat and embedded Azure-based video calls. • React and Ant Design. Mentored junior developers and partnered with design on reusable UI blocks.
Jun 2021 – Nov 2021
Senior Front-end Developer
Eyedea• Senior front-end on a client project building a web app for planning photovoltaic installations on rooftops and standalone setups. • Calculated required hardware from the design and supported wholesale orders. • Replaced complex spreadsheet-based formulas with structured, maintainable code for multiple installation types.
Mar 2016 – May 2021
Front-end Developer
SoftwareHut• Five years on client projects, moving from jQuery into React and TypeScript. • Built agent chat on a B2B customer-support platform unifying SMS, email, and chat in one thread. • Later worked on a brand showroom management panel for short-term retail space (invoicing, design uploads, renovation briefs) using React and GraphQL. Mentored juniors and joined client meetings.
Feb 2014 – Feb 2016
Front-end Developer
LemonTeaFront-end developer at a digital agency (HTML, CSS, JavaScript, PHP). Shipped a city tourist guide and a dance school platform with lesson payments. Also built client landing pages and campaign microsites.
Projects
Jun 2026 – Present
Personal website
Personal site and CV with content in Sanity so contact details and experience stay in one place. Built solo with AI-assisted development in Cursor. Astro and Sanity CMS.
Jun 2026 – Present
k7x-skills
Open-source agent skills for production release workflows. Each skill is a spec plus CLI and editor adapters you can install with npx skills. k7x-release tracks release steps in the project repo and walks you from setup to ship.
Jul 2026 – Present
typed-hydrate
Zero-dependency TypeScript library for typed JSON serialization, handling Date, Map, Set, RegExp, and binary data that JSON.parse/stringify cannot round-trip on their own. Rewrote it for v2, shipped to npm with full test coverage and automated releases. A smaller alternative to superjson for projects that do not need circular-reference support.
Skills
TypeScript · JavaScript · React · Next.js · Redux · styled-components · Tailwind CSS · Material UI · Ant Design · React Hook Form · REST APIs · GraphQL · Jest · React Testing Library · Git · Cursor · Sanity · Vercel
Education
Politechnika Białostocka
Informatyka — engineering studies
Degree not awarded. Joined full-time work before thesis.
Oct 2011 – Feb 2015
Languages
- Polish — Native
- English — C1