Viktor Lund
Engineering Lead at Raisin
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolViktor Lund is an engineering lead based in Berlin with 10 years of experience building and shipping reliable backend systems across startups and scale-ups. He has led engineering teams at Mobimeo and now Raisin, blending hands-on development with team coaching and delivery ownership. Deeply experienced in concurrent and asynchronous programming, he contributes to the prominent ZIO open-source library, improving tests, fixing subtle race-condition bugs and boosting performance. His background spans e-commerce, mobility and SaaS, with earlier roles at eBay and SnapEngage that shaped his pragmatic engineering approach. Viktor studied at Linköping University and spent an exchange at TU Berlin, giving him a cross-border perspective on technology and collaboration. He’s known for spotting tricky concurrency issues and turning them into robust, testable solutions.
10 years of coding experience
11 years of employment as a software developer
Erasmus exchange program Information Technology, Erasmus exchange program Information Technology at Technische Universität BerlinLinköping University
Spanish, German, Swedish, English
Stackoverflow
325reputation
12kreached
0answers
3questions
Github Skills (27)
testing10
zio10
scala10
functional-programming10
concurrency10
async9
data-structure9
concurrent9
asynchronous9
unit-testing9
concurrent-map9
data-structures9
scalacheck8
stream7
pip6
Programming languages (6)
Github contributions (5)
zio/zio
May 2019 - Sep 2019
ZIO — A type-safe, composable library for async and concurrent programming in Scala
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:13 commits, 9 PRs, 33 comments in 3 months
Contributions summary:Viktor primarily contributed to the ZIO library by modifying existing tests and adding new test cases, particularly related to concurrency and asynchronous programming concepts. Their work included moving and refactoring test specifications (specs) from different parts of the project (e.g., JVM to shared) and updating internal implementations of the StackBool data structure. The user also identified and fixed bugs related to index out of bounds exceptions and NPE, demonstrating a strong understanding of data structures and potential issues in concurrent programming. Furthermore, they made performance improvements and corrected functional aspects of the testing framework.
functional-programmingqueuesstreamsasynchronicityasync
vilu/purescript-browser-cookies
Sep 2018 - Jan 2022
Contributions:8 pushes, 2 branches, 1 tag in 3 years 3 months
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