Tomasz Kowalczewski
Software Engineer Lead at Volt Active Data
Krakow, Lesser Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolTomasz Kowalczewski is a software engineering lead with 11 years of professional experience building high-availability systems and databases, currently leading engineering at Volt Active Data in Krakow. He has deep expertise in backend Java systems and distributed transaction processing from a long tenure at Sabre, where he ensured near-100% availability for high-throughput services. As a former tech lead and CEO of a startup, he blends hands-on design and coding with product and team leadership, favoring low-level optimizations like sort-merge joins and non-blocking concurrency. Tomasz holds an MSc in Computer Science from AGH University of Krakow and has a track record of shipping robust production migrations and resilience-focused architectures. He’s pragmatic and performance-minded, comfortable both mentoring teams and diving into database internals. Colleagues can expect a systems-first engineer who prioritizes reliability and throughput over flashy tech.
11 years of coding experience
11 years of employment as a software developer
MSc, Computer Science, MSc, Computer Science at AGH University of Krakow
English, Polish
Stackoverflow
11reputation
4kreached
2answers
0questions
Github Skills (127)
amazon-kinesis10
permutation10
testing10
grafana10
grafana-loki10
logback10
ipc10
sdk10
protobuf10
application-framework10
blogger10
awaitility10
guava10
dsl10
java10
Programming languages (11)
Github contributions (5)
tkowalcz/tjahzi
Sep 2020 - Aug 2022
Java clients, log4j2 and logback appenders for Grafana Loki
Contributions:33 releases, 1 review, 417 commits in 1 year 11 months
logback-appenderappendersgrafana-lokiprotobuflog4j2-appender
tkowalcz/beaker
Oct 2018 - Dec 2022
Doing funny things with memory.
Contributions:13 commits, 1 PR, 42 pushes in 4 years 2 months
memory
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