John Cohen
Principal Engineer at Wells Fargo
Somerville, Massachusetts, United States
Summary
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SeniorJohn Cohen is a Principal Engineer with over a decade of experience designing and operating large-scale distributed systems, currently leading cloud migration and platform security efforts at Wells Fargo. He has a track record at AWS, Amazon Robotics, Nokia and PillPack of re-architecting legacy systems for web-scale, onboarding hundreds of services to multi-cloud environments and reducing systemic complexity and technical debt. Comfortable solving open-ended, ambiguity-heavy problems, he focuses on Cloud APIs, containers, networking and resilient distributed architectures while balancing hands-on implementation with cross-team coordination and mentorship. His background includes low-latency storage systems, patented rebalancing work, and production-facing Java engineering across storage, robotics, and consumer domains—skills he applies to secure, compliant platform design. Based in Somerville, MA, he combines deep systems-level expertise with an eye for future failure modes, prioritizing engineering excellence and measurable reductions in operational chaos.
10 years of coding experience
18 years of employment as a software developer
Github Skills (44)
javascript10
paths10
css10
ruby10
explore10
html10
nodejs10
web-development10
organize10
jazz10
ruby-on-rails10
connections9
api9
react9
sketch-app9
Programming languages (5)
Github contributions (5)
JohnLRBrock/JohnBrock
May 2017 - Mar 2018
Contributions:6 PRs, 197 pushes, 7 branches in 10 months
personal-webpagewebpage
Khanthulhu/definitely-not-facebook
Mar 2017 - Oct 2017
Contributions:18 PRs, 113 pushes, 13 branches in 7 months
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