John Johansson
Senior Software Developer at Funnel
Stockholm, Sweden
Summary
👤
Senior🎓
Top SchoolJohn Johansson is a seasoned Senior Software Developer based in Stockholm with 12 years of focused experience building high-performance systems in C++, Java, and modern cloud stacks. He has deep domain expertise in enterprise search (crawler, indexer, analyzers, ranking) and low-latency trading systems, having optimized memory and performance for production engines used across finance and enterprise products. At Funnel since 2020 and previously as a core developer of SiteSeeker at EPiServer/Euroling, he blends systems-level C++ skills with cloud-native Java/Node.js and ElasticSearch deployments on AWS/Azure. Known for tackling difficult scaling and performance challenges, he also brings hands-on experience with protocol engines (FIX), data warehousing, and tooling that improve developer productivity. Colleagues describe him as a pragmatic engineer who prefers elegant, efficient solutions and continuous skill improvement.
12 years of coding experience
29 years of employment as a software developer
Technical College Graduate (4th year), Electrical Engineering, Technical College Graduate (4th year), Electrical Engineering at Kattegattskolan, HalmstadTechnical College Graduate, Electrical Engineering, Technical College Graduate, Electrical Engineering at Peder Skrivares skola
Github Skills (99)
controller10
nginx10
database9
entity-framework9
ingress-controller9
dotnet-core9
api8
dotnet8
sql8
mapper8
ingress-nginx8
asp-net-core-identity8
haproxy8
linq8
graphiql8
Programming languages (5)
Github contributions (5)
johanbrook/achtungdiekurve
Apr 2014 - Apr 2014
Contributions:19 commits in 1 day
we4sz/pipedrive-dotnet
Feb 2023 - Nov 2023
Pipedrive.net is an async .NET Standard client for pipedrive.com
Contributions:1 push, 2 branches in 8 months
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