Tomasz Stanisz

Software Engineer & Tech Lead

I design and build web and mobile applications, from user interfaces to backend services. I combine hands-on engineering with architecture, testing and technical leadership.

Based in Poland · Remote roles · Regular US-hours overlap

Explore selected work View CV

Selected work

Application ownership for an event-booking MVP

TheEventa

Tech Lead · September 2025–Present

Concurrent role · MVP v1 under development

I lead application architecture and development across TheEventa's Next.js frontend, NestJS backend, internal admin panel and Playwright E2E project.

Outcome: Most of the MVP is built (authentication and SSO, organizations, event spaces, pricing, calendar and reservations) by a deliberately small team working with AI agents.

Lead development spanning authentication and SSO, event objects and their related spaces, organizations, image management, and pricing that recalculates as selected options change.
Own frontend wizard forms, the frontend design system and Storybook, alongside the landing page and blog.
Review code, feature implementations, and manual and automated tests, with personal oversight of agent-assisted workflows.

Technologies: Next.js, NestJS, TypeScript, Playwright, Storybook

Scope and approach

Agent-assisted workflows cover design preparation, implementation, and review of code, design, business analysis, and architecture.
Infrastructure, monitoring, and server administration are handled by a separate DevOps collaborator.

Read the case study about One tech lead, AI agents and an MVP rebuilt from almost zero

Frontend architecture for a backend-configured CMS

Orange Polska

Frontend architecture and development

At Orange Polska, I design and develop the frontend architecture of an internal CMS. Its React and TypeScript interface is generated from JSON schemas and backend-supplied configuration.

Outcome: Dozens of new resources have reached production without any frontend changes.

Build frontend behavior for configured navigation, forms, data grids and actions, including bulk operations.
Provide technical guidance and code review on the CMS, and review code across the department's React projects.
Contribute to a streaming platform, including a feedback form and backend submission flow that makes user opinions available to the Product Owner.

Technologies: React, TypeScript, JSON Schema · Additional backend contributions in Go

Scope and approach

Use React JSON Schema Form (RJSF) to render schema-defined forms.
Extend form behavior and presentation with custom fields and custom widgets.
Use Material UI for interface components and MUI X Data Grid Pro for data grids.
Implement frontend behavior for configured navigation and actions, including bulk operations.

Read the case study about A CMS the backend can extend without frontend changes

Establishing an E2E testing practice

Orange Polska

Test automation and mentoring

I established a separate Cypress E2E project from scratch, including its test architecture and parallel execution. I trained two junior testers and reviewed their code during the project's first year.

Outcome: Regression checks went from one to three days of manual testing to about an hour on Orange TV GO and about 30 minutes on the CMS.

Technologies: Cypress, TypeScript

Scope and approach

Implemented the Page Object Model to organize application interactions into reusable page objects.
Applied DRY principles to shared test logic and reusable interactions.
Implemented parallel execution of E2E tests.

Read the case study about From days of manual regression to under an hour

How I work

Architecture

I design frontend architecture and work across application layers, from backend-configured interfaces to full-stack product development.

Quality

I review code and feature behavior, combining manual checks with automated testing.

Technical guidance

I guide developers and mentor junior testers through practical feedback and code review.

Community leadership

I lead ATOM (Akademia Tworzenia Oprogramowania), a programming community with 900 members.

Additional breadth: React Native, backend contributions in Go, and Python used as needed.

Background

Orange Polska

October 2022–Present

Software Engineering & Technical Leadership

Formal title: Inżynier DevOps

TheEventa

September 2025–Present

Tech Lead

Concurrent role. MVP v1 under development.

DareDrop

May–June 2022 · US startup

Junior Full Stack Developer

Finance and accounting background

Before moving into software engineering, I worked in finance and accounting at Accenture, Marsh McLennan, AkzoNobel and Tate & Lyle. My experience includes financial reporting, reconciliations and month-end processes, giving me practical domain context for financial and business software.

Associate Cloud Engineer Certification — Google. Issued July 2024; expires July 2027.
Master's degree, Finance and Accounting — University of Lodz, 2012–2014.
Bachelor's degree, Finance and Accounting — University of Lodz, 2009–2012.
English: approximately C1, used professionally.

Earlier projects

Earlier projects from training and early practice.

Head Hunter

Bootcamp team project for connecting students and recruiters.

Dev Social Media

Earlier full-stack practice project.

MERN shop

Earlier learning project for an online shop.

Source code

Phaser game

Earlier 2D game practice.

Earlier training

Courses and bootcamps, separate from the degrees and certification above.

NextJS 14 Ultimate
Started January 2024
NextJS Masters
September 2023–October 2023
Udemy Courses and Certificates
Started 2020
Pluralsight - Technology platform for programmers
Started September 2021
GraphQL Mastery - Michał Taszycki
March 2023
MEGAK - one year Full-Stack Bootcamp
June 2022
KursReacta - 12 tyg Reacta - Michał Taszycki
October 2020
StudiujeIT - One year IT bootcamp
October 2020
WebSamuraj - From beginner to Web Developer
October 2019–2020

Contact

Open to hands-on engineering roles with technical leadership and mentoring. Based in Poland, with regular overlap with US teams.

Connect on LinkedIn thomas.dev666@gmail.com