Andreas Hasselberg
Software Developer at Aira
Stockholm County, Sweden
Summary
👤
Senior🎓
Top SchoolAndreas Hasselberg is a software developer with 18 years of experience designing and operating large distributed and high-availability systems, primarily in finance and payments. He has deep backend expertise from roles at Klarna (including domain architect for servicing), SumUp, and other fast-moving companies, with hands-on experience migrating monoliths to microservices and building PCI-compliant payment backends. Based in Stockholm, he prefers small teams where he can tackle serious backend challenges and measure satisfaction by seeing his work used in production. Known for pragmatic, event-driven designs and durable bookkeeping and dunning systems, he combines rigorous system thinking with a focus on reliability and maintainability.
18 years of coding experience
16 years of employment as a software developer
Master's Degree Computer Science, Master's Degree Computer Science at Uppsala University
English, Swedish
Stackoverflow
101reputation
4kreached
6answers
0questions
Github Skills (86)
aws-services10
webserver10
erlang10
compile10
aws-credentials9
aws9
riak9
postgresql8
telemetry8
jose7
elixir7
meck6
code-generation6
erlang-otp6
testing6
Programming languages (9)
Github contributions (5)
andreashasse/rebar3
Nov 2015 - May 2021
Erlang build tool that makes it easy to compile and test Erlang applications and releases.
Contributions:5 pushes, 2 branches in 5 years 6 months
erlang
andreashasse/spectra
Jul 2025 - Jul 2026
Safe data (de) serialization using erlang types
Contributions:4 releases, 11 reviews, 50 PRs in 11 months
erlangserializationjson-schemavalidation
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