John Wästerlund
Chief Architect at Nolimit City
Stockholm, Sweden
Summary
👤
Senior🎓
Top SchoolJohn 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.
14 years of coding experience
7 years of employment as a software developer
MSc, Computer Science and Engineering, MSc, Computer Science and Engineering at Luleå tekniska universitet
Swedish, English
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)
Github contributions (5)
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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