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Senior Full Stack Engineer / Technical Lead

Technical ownership for reliable web applications, e‑commerce and business systems.

I help companies build, modernize and maintain web systems that are clear, scalable and easier to support — combining hands-on development with architecture decisions, technical leadership and long-term ownership.

9+ years experience
Technical Lead delivery ownership
Full-stack development
E‑commerce systems
Kraków / remote Poland / international

Choose your path

What do you need help with?

Build or improve a web system

For companies that need web applications, e‑commerce platforms, integrations or modernization.

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Find the right cooperation model

For projects, long-term support, technical leadership or team-based cooperation.

See cooperation options

Check my background

For teams and clients who want to review experience, skills, education and certifications.

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Why technical ownership matters

Reliable software needs more than implementation.

Many web systems become difficult to maintain because technical decisions, communication and long-term ownership are treated as secondary. I focus on building software that solves real business problems and remains understandable after launch.

Clear technical direction

Architecture, priorities and implementation choices aligned with the real project context.

Maintainable delivery

Code, structure and decisions designed to support future changes, not only the first release.

Business-aware communication

Technical risks and options explained clearly so clients and teams can make better decisions.

Professional background

9+ years of commercial engineering experience.

I work across frontend, backend, e‑commerce, integrations and technical leadership, supporting businesses, agencies and product teams in building and maintaining reliable web systems.

  • Full-stack engineering
  • Technical leadership
  • E‑commerce experience
  • AI-assisted workflow
  • Security-conscious mindset
View professional profile
Jarosław Matejek
9+ years of commercial experience
Technical Lead delivery ownership
Full-stack frontend / backend / integrations

Have a project or technical challenge to discuss?

Tell me what you are building, improving or struggling with. I’ll help you choose the right technical direction and the best way forward.