Sergio Martínez / zkzoomer
Backend & Blockchain EngineerSpain (CET)
Expert, AI Trainer
Micro1, Contractor, Remote
2026
Designing vulnerability remediation tasks and automated tests to train and evaluate AI models.
2026
Senior Protocol Engineer
Matter Labs, Engineering Team · Rust/Backend Infrastructure, Remote
Led ZKsync v29 interoperability upgrade delivery, coordinating Rust backend and smart contract changes. Implemented execution and state logic, backward-compatible database migrations across storage, synchronization, execution, and API layers, and end-to-end integration tests.
ZKsync v31 server changes PRServer v31 support across the stack, wiring the new contracts into node, CLI, tests, and CI flowsserver #4608
Focused v31 release PRsTurned v31 release work into focused server PRs covering protocol integration, execute-path changes, and native interoperability groundwork.server #4730server #4769server #4756
Focused v29 release PRsSplit v29 release work into reviewable server PRs for VM changes and protocol upgrade readiness.server #4292server #4221
Top 10 era-contracts contributorSustained contract-side protocol contributions to matter-labs/era-contracts, including v29 and v31 release and upgrade work.contracts #1419contracts #1947contributors graph
Blockchain Engineer
Term Structure, Blockchain / ZK Team, Taiwan (R.O.C.)
Designed an upgradeable fixed-rate lending platform with offchain matching and onchain settlement. Modelled financial state transitions and invariants, built a custom zkVM execution engine, and integrated the system into an end-to-end lending and borrowing protocol.
Software Engineering Intern
Alteia, Computer Vision Team, France
2023
Built a computer vision pipeline classifying components in electrical infrastructure from drone footage.
2023