Chris Hager
Engineering And Some Other Things at Flashbots
Vienna, Austria
Summary
🤩
Rockstar🎓
Top SchoolChris Hager is an engineering leader and hands-on technologist based in Vienna with two decades of experience building scalable systems across cloud infrastructure, distributed applications, mobile, and blockchain. Currently at Flashbots, he combines backend and DevOps expertise—demonstrated by contributions to high-impact projects like mev-boost and mev-boost-relay for Ethereum proposer/builder separation—with a history of CTO and interim-CTO roles that grew teams and production platforms. He’s comfortable across stacks and layers, from embedded electronics and operating systems to CI/CD, Kubernetes migrations and API design. A pragmatic mentor and former lecturer, he’s known for turning complex architectures into maintainable workflows and improving developer experience through tooling and automation. His open-source work shows a knack for robust back-end foundations and infrastructure improvements rather than flashy features, reflecting a builder’s mindset focused on reliability and reproducibility.
11 years of coding experience
11 years of employment as a software developer
Master of Science (MSc) Telecommunication & Internet Technologies, Master of Science (MSc) Telecommunication & Internet Technologies at University of Applied Sciences Vienna
English, German, Spanish, Hindi
Stackoverflow
449reputation
48kreached
3answers
1question
pdf
top-5%
Github Skills (29)
github-ci10
docker10
python10
apidoc10
testing10
dockers10
cicd10
go10
api10
ethereum10
logging10
githubaction-workflow10
emv10
package-management9
dependency-management9
Programming languages (23)
Github contributions (5)
flashbots/mev-boost
Feb 2022 - Jan 2023
MEV-Boost allows Ethereum validators to source high-MEV blocks from a competitive builder marketplace
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:1 release, 345 reviews, 192 commits in 11 months
Contributions summary:Chris's commits focused on improving the infrastructure and build processes of the `mev-boost` project. Their contributions included removing unused variables, adding linting and static analysis tools, and building Docker images. They also worked on removing EL client calls, indicating a refactoring of the project's dependencies. Additionally, the user implemented multi-relay support, profit switching, and parallel request execution, expanding the project's capabilities.
ethereummevmev-boost
flashbots/mev-boost-relay
May 2022 - Jan 2023
MEV-Boost Relay for Ethereum proposer/builder separation (PBS)
Role in this project:Back-end Developer
Back-end DeveloperContributions:3 releases, 390 reviews, 305 commits in 7 months
Contributions summary:Chris's primary contribution involves initial setup and testing of server-side components. The commits demonstrate work on Go-based server functionalities, including testing for error handling and basic routing. The user focused on developing the base structure for an API related to the "MEV-Boost Relay" project, indicated by test code, indicating a strong involvement in backend development.
ethereummevmev-boostblockchainpbs
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