About me
Hi, I’m Łukasz.
.NET technical lead and 7x Microsoft MVP in Developer Technologies.
I help teams build fast, reliable .NET systems through performance tuning, diagnostics, and pragmatic architecture.
Recommendations
What teammates and leaders say about working with me.
“Worked with Łukasz for 5+ years. He turned business needs into robust solutions, led the architecture of a new WebRTC backend, and kept production healthy through fast diagnostics. Collaborative, quality-focused, and great at bridging tech and product.”
“Professional and highly analytical. He quickly finds root causes, explains complex topics clearly, and delivers optimized solutions. An excellent specialist and mentor.”
“Impressed by his deep .NET knowledge and willingness to go low‑level (even WinDbg). Ambitious, goal‑oriented, and makes an instant impact on teams.”
“If you need complex code, deep .NET debugging, or global‑scale architecture, Łukasz delivers. Great engineer, expert, and architect.”
“Standout talent with a strong can‑do attitude. Boosted team productivity and collaborated effectively across disciplines.”
“Prepared scalable cloud architecture and improved team efficiency through strong project leadership.”
“Very strong technical skills and reliable delivery. Proactive teammate who improved application optimization.”
“Great technical background with strong communication and teamwork. Adaptable and quick to learn new things.”
“Fearless with ambiguous tasks, eager to learn new technologies, and open to feedback. Strong on testing and code quality, a pleasure to review with.”
“Hardworking, creative, and a strong team player. Contributed to student workshops and large academic conferences with great impact.”
“Active across many areas and consistently proposed upgrades and automation. Recommended.”
“Great team leader and developer. Motivated the team and delivered complex projects on time.”
“Excellent organization and time management. Very strong team leadership that drove fast project progress.”
“Brought significant knowledge and a drive for continuous learning that benefited the whole team.”
Core focus
- Performance and scalability reviews
- Architecture and microservices strategy
- Diagnostics, tracing, and incident response
- Technical leadership and mentoring
Technology stack
- .NET, C#, ASP.NET Core
- Azure: Service Bus, Event Hubs, Cosmos DB, SQL, Storage, Key Vault
- Cloud & containers: Kubernetes, Docker, Linux, cloud networking
- Infrastructure as Code: Terraform
- AI tools and developer copilots for productivity and code review
- Platform maintenance, reliability, and on‑call readiness
- Library and SDK maintenance and design
- High‑traffic APIs, real‑time WebRTC platforms, SDK design
- Observability: OpenTelemetry, distributed tracing, metrics, logging
Impact highlights
- Ownership of ASP.NET Core microservices handling hundreds of millions of requests/month
- WebRTC platform rewrite with scalable global architecture (including China region)
- R&D, migrations, and high‑risk incident debugging
- Interviewing and hiring for C# and backend roles
Responsibilities
- Architecture ownership and technical direction
- Performance investigations and optimization
- Reviewing critical PRs across teams
- Designing SDKs and internal platform tooling
Experience
- .NET Technical Lead — Sonova AG (2021–present)
- Senior .NET / Azure Developer — Sonova AG (2018–2021)
- Senior Software Developer — Ryanair (2016–2017)
- Software Developer — Credit Suisse (2015–2016)
- Software Developer — Volvo (2014–2015)
- IT Specialist — Step Records (2012–2014)
Community & Training
- Co‑founder of Dotnetos (courses & conferences)
- Organizer — Wrocław .NET User Group (WrocNet) (2025–present)
- Courses: Async Expert, .NET Diagnostics Expert, C# 9.0 Professional, .NET Memory Expert