Federico Gimenez
Senior Software Engineer at Polygon Hermez
Madrid, Community of Madrid, Spain
Summary
🤩
Rockstar🎓
Top SchoolFederico Gimenez is a Senior Software Engineer based in Madrid with 13+ years of hands-on experience building and operating cloud-native and blockchain infrastructure. He combines a developer-first background with strong sysadmin and DevOps chops, having led infrastructure and release engineering at organizations like Polygon Hermez, Red Hat and Web3 Foundation. Federico focuses on end-to-end product quality and lean value streams—designing CI/CD, test automation and resilient platform components while empowering teams to continuously improve. His open-source contributions span critical projects such as the Moby container ecosystem and Polygon’s zkEVM node, where he improved sync, testing and database automation. Comfortable across Go, Rust and distributed systems, he excels at translating complex operational requirements into reliable, testable production systems. Colleagues describe him as a tenacious problem-solver who pairs technical depth with a pragmatic, team-centered approach.
13 years of coding experience
9 years of employment as a software developer
Ingeniero Superior, Ingeniería de telecomunicaciones, Ingeniero Superior, Ingeniería de telecomunicaciones at Universidad Politécnica de Madrid
Spanish, English
Github Skills (16)
testing10
container10
docker10
go10
rust10
postgresql10
database-design10
dockers10
blockchain10
test-automation10
integration-testing10
cicd9
ethereum9
golang9
distributed-systems9
Programming languages (23)
Github contributions (5)
0xPolygonHermez/zkevm-node
Jan 2022 - Aug 2022
Go implementation of a node that operates the Polygon zkEVM Network
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:26 reviews, 92 commits, 18 PRs in 6 months
Contributions summary:Federico's contributions focused on setting up and maintaining the backend and infrastructure components of the Polygon zkEVM Network. This involved writing PostgreSQL scripts for managing prover users and configuring Docker for the database. The user also made significant changes to the synchronizer, introducing chunking for block synchronization, and contributing to the test infrastructure by implementing polling mechanisms to ensure service readiness, as well as enhancing the e2e tests. They also worked on improving the build process.
golangblockchainpolygon
paradigmxyz/reth
Mar 2023 - Apr 2025
Modular, contributor-friendly and blazing-fast implementation of the Ethereum protocol, in Rust
Role in this project:Back-end Developer
Back-end DeveloperContributions:399 reviews, 383 PRs, 758 pushes in 2 years
Contributions summary:Federico's contributions center around the implementation and testing of core database functionalities within the reth project, a modular Ethereum implementation written in Rust. They focused on implementing missing database functionality, specifically within mock database layers, as well as implementing support for the `walk_back` method in the Mock database implementation. Their work also involved adding descriptive logging for reorgs. These contributions show a focus on the storage and blockchain tree layers.
contributor-friendlyblazingethereump2prust
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