John Pavlecich
Founder at OneWelcome, a Thales company
Rotterdam, South Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolJohn Pavlecich is a founder and experienced full-stack developer based in Rotterdam, combining 16 years of hands-on engineering with eight years focused on senior and lead roles across cloud, CIAM, and SaaS platforms. He has driven multi-tenant architecture and security-first feature development at OneWelcome/Onegini and led cloud initiatives at Elastic, consistently balancing team leadership with individual technical contributions. Comfortable across Java-based backends, scalable systems, and mobile integrations, he has improved test coverage, CI/CD, and platform reliability while guiding teams of engineers. As founder of Gametje, he brings entrepreneurial drive to productizing technical solutions and shipping customer-facing services. Notably, he has a track record of introducing tooling and processes—like code review practices and performance-focused rearchitectures—that raised team quality and operational repeatability. A Purdue Computer Science graduate, he blends pragmatic engineering with a penchant for making complex systems maintainable and secure.
8 years of coding experience
13 years of employment as a software developer
Bachelor of Science Computer Science, Bachelor of Science Computer Science at Purdue University, School of Science
English, Dutch
Github Skills (69)
python10
iot10
raspberry-pi10
mqtt9
home-automation9
maven-extension9
automation9
home-assistant9
shortcuts9
spring9
asyncio9
privacy9
jekyll9
java9
spring-boot9
Programming languages (10)
Github contributions (5)
jmpavlec/ers-test
Sep 2021 - Sep 2023
Contributions:1 release, 3 pushes, 2 branches in 1 year 11 months
onewelcome/example-resource-gateway
Apr 2019 - Mar 2023
Contributions:3 releases, 2 reviews, 4 PRs in 3 years 11 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.