Bartosz Lenar
Staff Software Engineer - Architect at Invia CEE x Travelplanet.pl x Wakacje.pl
Lower Silesian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolBartosz Lenar is a staff software engineer and solutions/Cloud architect with nine years of experience designing and shipping large-scale systems across travel, banking, medtech and IoT. He blends hands-on engineering in .NET and Node.js with strategic architecture work—shaping enterprise architectures, evaluating trade-offs, and acting as the bridge between product and engineering for teams supporting millions of users and transactions. A seasoned technical leader, he mentors teams, defines delivery standards, and has repeatedly turned complex domain problems into maintainable, scalable solutions (from ML-driven image analysis to high-throughput ETL pipelines). Comfortable across Azure and AWS, microservices and distributed systems, he’s equally likely to sketch domain models in a whiteboard session as to contribute code in production. Having worked in startups and large enterprises across Sydney, London and Wrocław, he brings a pragmatic, business-first engineering mindset with a knack for simplifying ambiguous requirements into concrete, deliverable architectures.
10 years of coding experience
13 years of employment as a software developer
Master of Science (MSc) Computer Science, Master of Science (MSc) Computer Science at Wrocław University of Science and TechnologyBachelor of Science (BSc) Applied Computer Science, Bachelor of Science (BSc) Applied Computer Science at AGH University of Krakow
English, Polish
Stackoverflow
363reputation
239kreached
5answers
1question
Github Skills (32)
microsoft10
dotnet10
validation10
model-validation10
di-container10
specification10
dotnet-core10
fluent-api10
fluent-interface10
csharp10
clr9
fsharp8
iis6
ecmascript6
visual-studio6
Programming languages (2)
Github contributions (5)
bartoszlenar/CoreValidation_draft
Sep 2017 - Jun 2018
a draft of my lib
Contributions:78 PRs, 343 pushes, 90 branches in 9 months
bartoszlenar/ghactions
Feb 2020 - May 2020
Contributions:38 releases, 10 PRs, 120 pushes in 2 months
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