Solo-shipped products and 9 years inside teams.

Remote · Katowice, PL

Senior frontend role inside a global hospitality tech company: high-complexity enterprise codebase. Microservices architecture; maintainer of one core frontend repository and contributor across several others. Owning release management across the full environment matrix (test, uat, preprod, prod) and every region the platform serves globally.

• Maintainer of one core frontend repository; contributor across several others in a polyrepo setup
• Owning release management across four environments (test, uat, preprod, prod) and every region of the global platform
• Production incident response: diagnosing and hotfixing live PIMs (production bugs) across the global platform
• Microservices architecture with package versioning across the codebase
• Working with the company's design system in Storybook across product surfaces
• AI-augmented work inside enterprise constraints: Kiro CLI (formerly Amazon Q Developer) as the approved AI co-engineer

Remote · Amsterdam, NL

Two-sided staffing platform: employer and seeker portals, the company website, and a React Native mobile app. Built deep expertise on the company's own design system and used it across multiple internal applications, with end-to-end feature ownership on the recruitment side.

• Built and maintained the company's own design system in Figma + Storybook, used across multiple internal applications, including making targeted changes inside those apps when needed
• End-to-end ownership of recruitment-domain features: from spec through PO/BA/UX collaboration to release
• Worked across two portals (employer + seeker), the company website, and a React Native mobile app
• Code reviews and release management for the team

Remote · London, UK

UK-based online ticket retailing for train operators. Web applications across desktop, mobile and digital, with direct hands-on work on Caledonian Sleeper, the overnight rail service connecting Scotland with London.

• Direct hands-on work on Caledonian Sleeper: overnight rail ticketing across the UK
• Worked across multiple ticketing apps in an NX monorepo

Remote · Dawsonville, GA, USA

Direct work for Installation Made Easy® (Dawsonville, GA, Atlanta metro): an enterprise software platform for the home improvement industry. Migrated a legacy React application to Next.js and shipped new features in close collaboration with the US-based UX/UI design team.

• Led the React → Next.js migration on a live enterprise codebase
• Worked directly with the client's US-based UX/UI designers across timezones

Remote · Berlin, DE

Solo engineering role with a direct line to the company CEO and to his clients. Greenfield plugin development from zero, plus maintenance of the existing portfolio. Built React + PHP integrations between customer Shopware 5 shops and Zalando Merchant Platform, Tradebyte, Seven Senders, and WooCommerce, across REST APIs and the FTP/SFTP + CSV exchange pattern still used by large retailers.

• Built the Zalando zDirect Partner Connector, published in the official Shopware marketplace, lets merchants sell on Zalando from their shop with order sync, fulfilment statuses, shipment tracking, and analytics
• Built the TB.One FTP Connector (Tradebyte Adapter) from scratch in PHP against German-only documentation: FTP/SFTP + CSV exchange covering MyToys, Mirapodo, Limango, Yomonda and other European marketplaces. The pre-REST/SOAP integration pattern Zalando and other large retailers still rely on. Published in the Shopware marketplace and used by many merchants
• Worked across both REST APIs (zDirect, Seven Senders, WooCommerce) and the FTP/SFTP + CSV exchange pattern (Tradebyte/TB.One)
• Solo ownership end-to-end: direct CEO contact, client requirements, scoping, delivery, maintenance

Hybrid · Pulsnitz, DE

German payment service provider. Five-person engineering team running full Scrum, with biweekly onsite trips to the company HQ in Pulsnitz (DE) for 2-3 days. Worked primarily on the e-commerce integration platform and Smart Checkout, with some work on shop-module payment plugins; full-stack across React frontend and PHP/Yii backend, processing approximately 175,000 payment transactions per day.

• Backend handling ~175,000 payment transactions per day
• Full-stack ownership across React frontend and PHP/Yii backend
• Built and maintained Java, JavaScript, and PHP SDKs for merchants integrating the secupay platform: API-first design in OpenAPI/Swagger, with SDK code and docs generated from the spec
• Biweekly onsite at the German HQ, fully embedded in the engineering team