Jakub聽Strojewski
Senior Backend Engineer at ICE
Stony Stratford, England, United Kingdom
Summary
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Rockstar馃帗
Top SchoolJakub Strojewski is a Senior Backend Engineer with 12 years of experience designing and operating high-throughput, highly available payment systems across startups and scale-ups. He excels at translating complex business requirements into fault-tolerant, event-driven architectures using Kotlin, Kafka, PostgreSQL and JVM ecosystems, and has led engineering teams as VP and Principal Software Engineer. Known for clear, well-tested code and mentorship, he consistently improves developer experience and grows junior engineers into productive contributors. A self-taught functional programmer, Jakub applies Scala, Elm and Haskell-inspired patterns in production TypeScript and Kotlin projects to boost reliability and maintainability. He also contributes to open-source functional tooling鈥攅nhancing monet.js with monadic typings and operators鈥攄emonstrating depth across back-end and functional-programming domains. Based in Stony Stratford, he combines hands-on engineering with pragmatic leadership to deliver scalable, well-documented systems.
12 years of coding experience
17 years of employment as a software developer
B.Sc. Computer Engineering, B.Sc. Computer Engineering at Warsaw University of TechnologyXIV LO im. St. Staszica w Warszawie
Polish, English
Stackoverflow
693reputation
493kreached
12answers
1question
Github Skills (12)
typescript10
javascript10
functional-programming10
typescripts10
typescript-types10
testing9
api8
apidoc8
html6
scroll6
jquery6
coffeescript6
Programming languages (8)
Github contributions (5)
monet/monet.js
Mar 2016 - Nov 2021
monet.js - Monadic types library for JavaScript
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:15 releases, 11 reviews, 212 commits in 5 years 9 months
Contributions summary:Jakub's commits primarily focused on enhancing the `monet.js` library, specifically by implementing and testing features related to monadic types. They introduced and tested the `.ap()` operator for `Either` and `Validation` types, and added corresponding type definitions. Furthermore, the user added and tested the typings for IO monads, and added and tested list typings.
javascript
samwise-tech/collections
Nov 2017 - Nov 2018
Bunch of Redux store oriented immutable collections
Contributions:49 PRs, 32 pushes, 28 branches in 1 year
immutablejsreducerredux-formredux-storereducers
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