John Mcclean
Software Architect at Oath
Dublin, Ireland
Summary
🤩
RockstarJohn Mcclean is a Software Architect with 11 years’ experience building high-performance, cost-efficient ad tech systems—specializing in demand-side platforms for forecasting, analytics, optimization and serving. Based in Dublin, he architects cloud-native AWS solutions and distributed microservices that prioritize performance, observability and operational efficiency. He brings deep expertise in big data, OLAP, search technologies and functional programming in Java, and champions continuous delivery, infrastructure-as-code and automated testing to scale organizational productivity. An active open-source contributor, he has contributed core features and tests to the cyclops Java functional library and speaks publicly about engineering and tech branding. Notably, his work blends pragmatic production engineering with FP principles to squeeze latency and cost out of high-throughput systems.
11 years of coding experience
Stackoverflow
5,283reputation
2.4mreached
87answers
0questions
reflection
top-5%
java
top-1%
Github Skills (19)
unit-testing10
java10
javas10
reflection9
java-streams9
functional-programming9
collections8
data-structures8
data-structure8
stream8
maven6
monads6
lambda6
github-pages6
currying6
Programming languages (2)
Github contributions (5)
AOL-archive/cyclops
Dec 2014 - May 2022
An advanced, but easy to use, platform for writing functional applications in Java 8.
Role in this project:
Backend Developer
Backend DeveloperContributions:66 releases, 4094 commits, 599 PRs in 7 years 6 months
Contributions summary:John contributed to the implementation of features and bug fixes within the project. Their work involved modifying Java source code files within the `cyclops` directory, primarily involving unit tests. They integrated multiple features for the core functionality.
javafunctional-programmingreactive-streamsmonoidstreams
AOL-archive/micro-server
Jan 2015 - Sep 2020
Microserver is a Java 8 native, zero configuration, standards based, battle hardened library to run Java Rest Microservices via a standard Java main class. Supporting pure Microservice or Micro-monolith styles.
Contributions:39 releases, 2 reviews, 676 commits in 5 years 8 months
javamicroserviceszero-configurationrestjersey
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.