Joé Schaul
Backend Developer at Wire™
Berlin Metropolitan Area Germany
Summary
🤩
Rockstar🎓
Top SchoolJoé Schaul is a backend developer with 13 years’ experience building and operating scalable, production-grade services across cloud and on-prem environments from Berlin. He writes Haskell and Scala for core infrastructure (notably contributing to the open-source Wire server), designs federated protocols, and runs CI/CD and observability stacks to keep services reliable at scale. Joé has migrated monoliths to service-oriented architectures, built high-throughput media backends (handling tens of thousands of uploads per minute), and taught Scala to engineering teams. He pairs strong systems and automation skills (Ansible, Terraform, Kubernetes, Helm, Concourse) with hands-on on-call experience, enabling cloud-native products to be deployed in heterogeneous datacenters. A mathematician by training, he brings a research-minded approach to pragmatic engineering and a track record of shipping reproducible, documented solutions for complex distributed systems.
13 years of coding experience
4 years of employment as a software developer
Master's degree (M2), Mathematics and Computer Science, Master's degree (M2), Mathematics and Computer Science at ENS CachanBachelor of Science Honours (BSc Hons), Computer Science, Bachelor of Science Honours (BSc Hons), Computer Science at University of St. Andrews
Luxembourgish, English, German, French
Github Skills (5)
cabal10
back-end-development10
haskell10
build-system9
nginx8
Programming languages (22)
Github contributions (5)
wireapp/wire-server
Mar 2017 - Jan 2023
🇪🇺 Wire back-end services
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 releases, 735 reviews, 726 commits in 5 years 11 months
Contributions summary:Joé contributed to the Wire server's back-end services, focusing on core infrastructure and build processes. They implemented the addition of a static flag to cabal configuration files across multiple services (galley, cannon, cargohold, proxy, gundeck), enabling static executable builds. Furthermore, the user modified the proxy service by addressing exceptions and merging code. Finally, the user updated the system with new versions.
golangreactrusthaskellnodejs
AutomationWithAnsible/ansible-dynamic-inventory-chef
Sep 2015 - Feb 2019
An ansible dynamic inventory getting its truth about servers from a chef-api server
Contributions:11 commits, 9 PRs, 11 pushes in 3 years 5 months
ansible-dynamic-inventoryapiinventorytruthansible
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