John Wästerlund

Chief Architect at Nolimit City

Stockholm, Sweden
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Summary

👤
Senior
🎓
Top School
John Wästerlund is a Chief Architect with 14 years of hands-on experience designing and scaling backend systems for the gambling and casino industry, currently leading architecture at Nolimit City from Stockholm. With deep expertise in Java, databases and web technologies, he has built high-throughput transaction systems, RNG implementations and developer-facing APIs across roles at Net Entertainment, ComeOn! and PriceRunner. He pairs an MSc in Computer Science and Engineering with a pragmatic, full-stack background—comfortable from low-level data acquisition to front-end integrations—and is known for turning reliability and performance requirements into robust, maintainable designs. An enthusiast photographer outside work, he brings a practiced eye for detail and aesthetics to product and system design that often surfaces in elegant technical solutions.
code14 years of coding experience
job7 years of employment as a software developer
bookMSc, Computer Science and Engineering, MSc, Computer Science and Engineering at Luleå tekniska universitet
languagesSwedish, English
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Github Skills (32)

javascript10
prng10
javascript-game10
starcraft10
java-bytecode10
java10
uid10
api10
loader10
id-generator10
typescript9
game-development9
parse6
parser6
json5

Programming languages (5)

TypeScriptJavaJavaScriptHTMLSwift

Github contributions (5)

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grunka/httpclient

Sep 2019 - Dec 2022

Simple HTTP client library on top of standard Java functionality
Contributions:2 PRs, 34 pushes, 4 branches in 3 years 4 months
client-libraryhttp-clienton-topjavasimple-http-client
grunka/rfc1149.5

Apr 2018 - Mar 2025

Implementation of the RFC1149.5 RNG algorithm
Contributions:1 release, 11 pushes, 2 branches in 7 years
rng
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John Wästerlund - Chief Architect at Nolimit City