John Marangu
Elixir Fullstack Software Developer at PULPO WMS
Nairobi County, Kenya
Summary
👤
Senior🎓
Top SchoolJohn Marangu is an Elixir full-stack developer with 11 years of experience building scalable, production-grade systems for e-commerce and service platforms from Nairobi. He currently architects AWS infrastructure with CDK and maintains Phoenix/LiveView applications at PULPO WMS, integrating a broad array of marketplaces and logistics platforms to streamline warehouse operations. Previously he delivered Elixir backends, GraphQL APIs, and mobile/web clients at SweepSouth and led backend efforts at Postagraph, consistently enforcing idiomatic Elixir patterns and reliability. A pragmatic co-founder experience migrating Ionic to native Android and moving services from Firebase to Elixir highlights his cost-conscious, concurrency-first approach to engineering. Known for a hands-on mentality—“that which I cannot create, I do not understand”—he blends DevOps, CI/CD pipelines, and product-focused thinking to ship measurable improvements.
11 years of coding experience
2 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Meru University of Science and Technology (MUST)
English, Kiswahili, kimeru
Github Skills (50)
html5-audio10
audio10
playback10
javascript9
mpesa9
backend7
elixir7
ussd7
payment6
geolocation6
liveview6
caching6
dbconnection6
brasil6
smooth-scrolling5
Programming languages (8)
Github contributions (5)
johninvictus/sboda
May 2019 - May 2021
Safeboda promocode generator based on geo location
Contributions:54 commits, 8 PRs, 2 pushes in 2 years
geolocation
johninvictus/kooba
Feb 2018 - May 2019
Contributions:53 commits, 6 pushes, 1 branch in 1 year 3 months
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