Joel Scheuner
Senior Software Engineer at LocalStack
Switzerland
Summary
🤩
Rockstar🎓
Top SchoolJoel Scheuner is a Senior Software Engineer based in Switzerland with 12 years of experience building reliable backend systems and test automation for cloud-native tooling. Currently at LocalStack, he focuses on emulating AWS services—most notably improving Lambda integration, concurrency handling, and permissions testing for a widely used local AWS stack. He holds a PhD in Computer Science from Chalmers and earned summa cum laude degrees in systems software, bringing rigorous research methods to pragmatic engineering. His background includes developing OSS cloud benchmarking and deployment tooling at the University of Zurich and teaching RESTful API design. Joel combines deep systems knowledge with a tester’s attention to API behaviors, often surfacing subtle edge cases in distributed environments. Outside product work, he contributes to well-known open-source projects that help developers run cloud workflows locally.
12 years of coding experience
3 years of employment as a software developer
Master of Science - MS, Systems Software, summa cum laude, Master of Science - MS, Systems Software, summa cum laude at University of ZurichDoctor of Philosophy - PhD, Computer Science, Doctor of Philosophy - PhD, Computer Science at Chalmers University of TechnologyExchange Semester, Computer Science, Exchange Semester, Computer Science at Uppsala University
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (14)
api10
aws10
pytest10
python10
apidoc10
localstack10
testing10
serverless9
dockers7
continuous-integration7
docker7
aws-lambda6
bref6
php6
Programming languages (14)
Github contributions (5)
localstack/localstack
Dec 2022 - Jan 2023
💻 A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:742 reviews, 7 commits, 241 PRs in 1 month
Contributions summary:Joel primarily focused on enhancing and testing the AWS Lambda integration within the LocalStack project. Their contributions involved fixing bugs related to Lambda account settings, and concurrency management. They added new tests for Lambda permissions and made revisions to existing Lambda functionality, demonstrating a focus on API behavior and ensuring the reliability of the AWS Lambda emulation within LocalStack. This included adding comprehensive tests for the Lambda permissions API and its different behaviors, with considerations for function versions, and aliases.
serverless-cloudpythonaws-cloudtestingserverless
dit341/group-00-web
Aug 2019 - Nov 2021
Public mirror of https://git.ita.chalmers.se/courses/dit341/group-00-web
Contributions:1 PR, 16 pushes, 2 branches in 2 years 3 months
djangochalmers
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.