Fullstack Developer based in Warsaw, Poland. I build scalable web apps, API integrations, automation, and SEO-aware migrations for SMEs, NGOs, and product teams.

• Product MVPs, internal platforms, and bespoke business tools.
• Integrations with REST, SOAP, webhooks, OAuth2, and public registries.
• Modernization of legacy PHP and WordPress systems into maintainable stacks.
• Delivery pipelines with tests, CI/CD, security checks, and infrastructure automation.

• Grew a client portal's Google top-10 visibility by 5x in 6 months.
• Migrated 1200+ articles from Wix to WordPress with automation.
• Cut infrastructure and maintenance costs by about 90% after VPS migration and optimization.
• Raised automated testing coverage to 95% in projects using Jest and Cypress.

Custom CMS and lightweight CRM for a service business.

• Focus: lead intake, client communication, and admin dashboards.
• Outcome: one platform for website content, project intake, and internal operations.
• Stack: Next.js, Node.js, Express, TypeScript, PostgreSQL, Redis, BullMQ, OAuth2, JWT, Ansible

Legal-tech product built around a TypeScript-first platform and background job processing.

• Focus: modular product development for the legal industry.
• Stack: Next.js, NestJS, TypeScript, Redux Toolkit, Redux Saga, Redis, BullMQ, REST APIs

Modular HR system delivered in Symfony with containerized environments and CI/CD.

• Focus: maintainability, deployment consistency, and performance.
• Stack: Symfony, Twig, MySQL, Docker, Kubernetes, Vue, FastAPI, Trivy

Full modernization from Laravel to Next.js + TypeScript + MDX.

• Focus: release quality, editorial workflow, and maintainability.
• Stack: Next.js, React, TypeScript, MDX, Jest, Cypress, GitHub Actions

Large-scale migration from Wix to WordPress with SEO and automation.

• Focus: content migration, scripting, and organic traffic growth.
• Outcome: 5x top-10 keyword growth in six months.
• Stack: WordPress, PHP, Python, Scrapy, HTML, CSS, SEO

• Frontend: TypeScript, React, Next.js, Vue, Nuxt, Tailwind CSS
• Backend: Node.js, NestJS, Express, PHP, Laravel, Symfony
• Data and infra: PostgreSQL, MySQL, Redis, Docker, Kubernetes, AWS
• Quality: Playwright, Cypress, Jest, PHPUnit, GitHub Actions, Trivy

• Building modern products in the TypeScript + Node.js and PHP ecosystems.
• Designing integrations with REST, SOAP, webhooks, OAuth2, and public registries.
• Open to selected freelance, consulting, and B2B opportunities.

• Website: pietrzakprzemyslaw.pl
• Email: contact@pietrzakprzemyslaw.pl
• LinkedIn: linkedin.com/in/przempietrzak
• Location: Warsaw, Poland

Need a migration, integration, or product MVP? Reach out by email or LinkedIn.

Jestem fullstack developerem z Warszawy. Projektuję i wdrażam aplikacje webowe end to end: od frontendu i backendu, przez integracje API, po infrastrukturę, SEO i automatyzację procesów.

Najmocniej pracuję dziś w stacku TypeScript, React, Next.js, Node.js, NestJS oraz nowoczesne PHP, a komercyjnie realizowałem projekty także w Laravel, Symfony, Vue/Nuxt, WordPress, Redis, PostgreSQL, Docker i Kubernetes.

Najważniejsze efekty:

• wzrost widoczności SEO klienta 5x w 6 miesięcy
• migracja 1200+ artykułów z Wix do WordPressa
• obniżenie kosztów utrzymania IT o około 90%
• podniesienie pokrycia testami do 95%