Hi, I'm Bartosz Lenar

I'm a staff+ software engineer, solutions architect, cloud architect (primarily Azure) with a programming background (dotnet, nodejs) and experience in wearing a technical leadership hat.

Having me on board means having a strategic software engineering partner — someone who understands both the business and technical sides, and builds systems that serve both, mentors high-performing teams, oversees the technical aspects of delivery and helps shape the company's tech culture. All while staying hands-on with the code and tools.

I've helped organizations turn complex requirements into scalable and maintainable systems across banking, medtech, travel, and other sectors - in organizations ranging from startups to large enterprises - and across multiple geographies (I'm a former Sydneysider and Londoner, currently settled in Wrocław, Poland).

Contact me:

bartosz@lenar.dev | @bartoszlenar on X | GitHub | LinkedIn

Recent projects

all projects

2020-04-25 (updated: 2025-05-27)

Validot

performance-first, compact library for advanced model validation
2025-01-25

Astro Milidev

a minimalistic portfolio+blog Astro theme