Justin Trobec - Co-Founder at focused

Justin Trobec

Co-Founder at focused

Libertyville, Illinois, United States

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Summary

👤

Senior

🎓

Top School

Justin Trobec is a seasoned software leader and co-founder with over a decade of experience building scalable, user-focused systems that blend technical rigor with human-centered productivity. As CTO of focused.space he designs the platform that helps people form healthy work routines and community-driven accountability, while previously driving large-scale performance and trends systems at Twitter. His background spans high-throughput, low-latency services and NLP-backed search features from long tenures at Microsoft and Twitter, plus hands-on contributions to open-source tooling like the Pants build system where he improved code coverage integrations. Justin combines product-minded engineering with strong reliability and observability instincts, often surfacing hard-to-detect issues through tooling and automation. He pairs advanced degrees in computer science and data science with an unexpected foundation in music, reflecting a mix of analytical precision and creative problem solving.

10 years of coding experience

20 years of employment as a software developer

Master's of Information Data Science, Master's of Information Data Science at University of California, Berkeley

Bachelor of Science Information Technology, Bachelor of Science Information Technology at University of Phoenix

Master of Computer Science, Master of Computer Science at University of Illinois System

Associate Fine Arts -- Music, Associate Fine Arts -- Music at Oakton College

Github Skills (11)

code-coverage10

javas10

jacoco10

build-system10

python10

java10

testing10

cobertura9

junit9

build-tools9

thrift8

Programming languages (5)

TypeScriptJavaScalaHTMLPython

Github contributions (5)

pantsbuild/pants

Aug 2015 - Nov 2018

The Pants Build System

Role in this project:

Back-end Developer & Test Automation Engineer

Contributions:5 commits, 20 PRs, 16 comments in 3 years 3 months

Contributions summary:Justin primarily focused on enhancing the code coverage capabilities of the Pants build system. They implemented and refactored code coverage features, including the addition of a Jacoco code coverage engine and improvements to Cobertura. Their contributions included adding target filtering for coverage reports to reduce noise and improving the handling of dependencies for Thrift exceptions, indicating an understanding of testing and build system internals. These changes streamline the testing process and improve the reliability of the build system.

pythonprotobufaws-lambdapantsshell

jtrobec/pants

Aug 2015 - Nov 2018

Pants Build System

Contributions:63 pushes, 18 branches in 3 years 3 months

pantsbuild-system

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