John Mercier
Sr. Software Engineer at Nexxen
Pennsylvania, United States
Summary
🤩
Rockstar🎓
Top SchoolJohn Mercier is a senior software engineer with 11 years of professional experience building reliable, test-driven Java and Groovy systems across enterprise and defense domains. He has redesigned legacy ingestion pipelines into modular, graph-based dataflows and built lightweight metrics and test frameworks that accelerated development and observability. Comfortable across the full lifecycle, he has reduced CI/build times dramatically, automated static analysis, and implemented secure deployment checks via custom Gradle tooling. A collaborative mentor and presenter, he routinely teaches TDD, CI/CD, and practical product-design techniques to lift team quality. Based in Pennsylvania, he blends hands-on implementation with pragmatic architecture—often favoring simple, low-overhead solutions like event buses and stage/pipe patterns that quietly scale.
11 years of coding experience
11 years of employment as a software developer
Computer Science Computer Programming, Computer Science Computer Programming at University of Maryland Global CampusAssociate in Specialized Technology Degree in Computer Programming Computer Programming, Associate in Specialized Technology Degree in Computer Programming Computer Programming at Pittsburgh Technical College
Stackoverflow
1,667reputation
184kreached
55answers
55questions
Github Skills (147)
truth10
nix10
command-line-interface10
assertion-framework10
directed-graph10
nixos10
linux10
groovy10
guava10
dsl10
graph10
java10
xlib10
nixpkgs10
spring-boot10
Programming languages (14)
Github contributions (5)
moaxcp/gentoo-packer
Jun 2015 - Oct 2015
Contributions:66 commits, 3 PRs, 26 pushes in 4 months
vagrantboxvagrant-boxgentooansible
moaxcp/etc-nixos
Jun 2017 - Mar 2024
Contributions:50 pushes, 1 branch in 6 years 10 months
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