Linas Naginionis
Senior Software Engineer at CAST AI
Vilnius, Vilnius County, Lithuania
Summary
🤩
Rockstar🎓
Top SchoolLinas Naginionis is a Senior Software Engineer with 15 years of experience building and leading teams that deliver large-scale, distributed systems for observability, data infrastructure, and enterprise content management. He is fluent across a wide polyglot stack—Java, Go, Scala, Kotlin, C#, and SQL—and has driven production work on Prometheus-compatible query engines and distributed TSDB projects like the widely used m3db. At Chronosphere and Adform he focused on scalable metrics platforms and endless data storage, while at Cognizant and earlier roles he led distributed teams to improve architecture, availability, and reduce technical debt. A pragmatic hacker by philosophy, he prefers rapid iteration and continuous improvement, and maintains several open-source projects where he’s fixed complex query parser and topk/sort issues that improved performance and correctness. Based in Vilnius, he combines hands-on backend debugging with team leadership and a track record of shipping resilient, performance-sensitive systems.
15 years of coding experience
17 years of employment as a software developer
Bachelor IT, Bachelor IT at VILNIUS TECH - Vilnius Gediminas Technical University
English, Lithuanian, Russian
Stackoverflow
5,505reputation
392kreached
81answers
5questions
delphi
top-1%
Github Skills (20)
delphi10
tsd10
aggregations10
go10
prometheus10
query-engine10
metric10
unit-testing9
query-optimization9
data-structures8
api8
data-structure8
api-design8
generics6
virtualtreeview6
Programming languages (4)
Github contributions (5)
m3db/m3
Oct 2020 - Jan 2022
M3 monorepo - Distributed TSDB, Aggregator and Query Engine, Prometheus Sidecar, Graphite Compatible, Metrics Platform
Role in this project:
Back-end Developer
Back-end DeveloperContributions:142 reviews, 43 commits, 57 PRs in 1 year 2 months
Contributions summary:Linas focused on debugging and improving the M3 database query engine, primarily by fixing issues related to the `count_values` function, sort/topk/bottomk operations, and instantaneous queries. Their work included resolving naming problems, correcting unit tests, and optimizing query performance for instant queries. The user also made changes to the query parser and data models, and addressed NaN issues in sort and topk/bottomk functions.
distributedquerymonorepoquery-enginesidecar
soundvibe/ha-danfoss
Jan 2024 - Mar 2025
Home Assistant Addon for Danfoss Icon App Module
Contributions:4 releases, 30 PRs, 89 pushes in 1 year 1 month
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