Warsaw, Poland · open to new challenges

Sławomir Skiba

Senior Software Developer crafting .NET backends

Nearly two decades of turning business needs into stable, fast and maintainable software. From C# and SQL all the way up to React and Umbraco.

Get in touch See the journey
Portrait of Sławomir Skiba
★ Umbraco MasterCertified 2026
var dev = new Developer();
19+ years writing production code
2007 first line of business software
6 companies, one constant: quality
Full‑stack .NET on the back, React on the front

01 · Craft

What I bring to the table

/01

Backend & architecture

Designing systems on C#, ASP.NET and .NET Core with SQL Server and PostgreSQL underneath. Built for stability and scale, and supported by clear architectural decisions.

  • C#
  • .NET Core
  • ASP.NET MVC
  • SQL
/02

Modern frontends

Connecting solid backends with responsive React interfaces. Full-stack components that feel fast for users and stay easy to maintain for teams.

  • React
  • JavaScript
  • Full-stack
/03

CMS & cloud

Certified Umbraco Master delivering CMS platforms that editors love, deployed and integrated on Microsoft Azure.

  • Umbraco
  • Azure
  • Integrations

Readable code. Unit tests. Honest communication. Deliberate architecture.

Now building

Projects powered by AI

I'm currently working on several projects built with generative AI, using Google Gemini and Anthropic Claude. I bring language models into real applications and into my everyday engineering work.

  • Gemini
  • Claude
  • LLM
  • AI agents

Personal project · built from scratch

Badmintomania! App

A web app for members of Badmintomania!, a badminton club in Warsaw. I designed and built it from zero, end to end: one place where players manage their training, schedule and payments.

Open the app ↗
  • Training groups & schedule
  • Session reservations
  • Absence reporting
  • Make-up session sign-ups
  • Training history
  • Online payments

02 · Journey

From business software to the cloud

  1. 2019 → now

    KMD Poland & Charlie Tango

    Senior Software Developer. Full-stack .NET and React, Umbraco platforms, and a voice in architecture and code quality.

  2. 2019

    Viacom

    Software Engineer. C# and ASP.NET components shipped alongside product teams.

  3. 2017 → 2018

    PGS Software

    Backend and frontend in .NET and JavaScript, with a strong push for unit testing.

  4. 2014 → 2017

    Order of Code

    C# and JavaScript developer building web apps and system integrations.

  5. 2007 → 2014

    Microsystem

    Where it started. Seven years of business software, databases and real users.

Sławomir Skiba in sunglasses

03 · Contact

Have a project in mind?

I'm looking for a role where I can build modern full-stack solutions with .NET and React. Let's talk.

Send an email
SSkiba Software Sławomir Skiba VAT ID (NIP): 795-222-90-73