devthomas.pl Tomasz Stanisz
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  • cat work/orange-cms.mdCase study: A CMS the backend can extend without frontend changesPage
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  • cat work/theeventa-mvp.mdCase study: One tech lead, AI agents and an MVP rebuilt from almost zeroPage
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Portrait of Tomasz Stanisz

Tomasz Stanisz

Software Engineer & Tech Lead · Poland · Remote

I design frontend architecture teams can extend, and the testing that keeps it shipping.

Web and mobile applications, from user interfaces to backend services, with the architecture, testing and technical leadership around them. Regular overlap with US teams.

See the workGet in touch
Orange Polska · internal CMS · click a part

The backend describes the frontend: navigation, URLs, views and forms all arrive as configuration and JSON Schemas.

New resources shipped with no frontend changesDozens

Selected work · Orange Polska

Proven in production

01Frontend architectureSince late 2022

A CMS the backend can extend without frontend changes

One internal CMS in front of many legacy systems, built to last for years. I chose the stack and let the backend describe navigation, views and forms.

Dozens of new resources reached production without frontend work.

Decision
React + TypeScript, MUI and RJSF over vanilla JS and custom components
Trade-off
Harder debugging, answered with a contract checker and dedicated logging
  • React
  • TypeScript
  • RJSF
  • MUI X
  • Go

Read the case study

02Quality and mentoringSince 2022

From days of manual regression to under an hour

Instead of writing a proposal, I built a working Cypress suite. My manager hired an automation tester; I trained two testers and reviewed every change in the first year.

1–3 days → about an hour on Orange TV GO.

  • Manual regression, 100+ scenarios1–3 days
  • Cypress, Orange TV GO~1 h
  • Cypress, internal CMS (~80)~30 min
  • Cypress
  • TypeScript
  • Page Object Model
  • Parallel runs

Read the case study

Now building and shipped

Now buildingMVP v1 in progress

TheEventa: leading an event-booking MVP with a small team and AI agents

Tech Lead since September 2025, alongside Orange. Next.js, NestJS, an admin panel and a Playwright E2E project, with every change signed off by me.

  1. Design
  2. Business review
  3. AI + business review
  4. Build
  5. Eng. review
  6. My sign-off

How I run delivery

How I work, and where it shows

Background

Full CV and PDF
  1. Earlier career

    Finance & accounting

    Accenture, Marsh McLennan, AkzoNobel, Tate & Lyle

  2. May–Jun 2022

    DareDrop

    Junior Full Stack Developer

  3. Oct 2022–now

    Orange Polska

    Software Engineering & Technical Leadership

  4. Sep 2025–now

    TheEventa

    Tech Lead · concurrent

Open to hands-on tech-lead roles

Based in Poland, with regular overlap with US teams.

thomas.dev666@gmail.comLinkedInGitHub