Sei Labs
Tech / AI / Software
Senior/StaffEngineer-Platform
Neural analysis suggests this role is
optimal for Senior candidates.
“Senior / Staff Engineer - Platform at Sei Labs. Skills: Platform Engineering, Infrastructure, Scale testing, CI/CD, Observability, Performance testing, Security, Incident response, Distributed systems, Consensus protocols. Build and maintain Docker/Kubernetes harnesses for repeatable stress and scale testing. Run our multi-cloud footprint with explicit reliability and cost targets”
What You'll Achieve.
make the safe path the default path for every engineer on the team; explicit reliability and cost targets; defined SLOs on every critical service; Regressions caught before merge, not by users
Industry & Context.
reason about consensus protocols at the algorithmic level; debugged something non-trivial at this layer; Benchmarking & performance bottleneck analysis; find the bottleneck, and explain why it's the bottleneck before proposing a fix; triage under pressure; turn postmortems into structural fixes
What They're Looking For.
Must Have
5+ years building production systems at scale, Security fundamentals, Distributed consensus understanding, Benchmarking & performance bottleneck analysis, Live incident response, End-to-end systems thinking
Nice to Have
Blockchain or web3 infrastructure experience, especially with consensus, mempool, or storage layers, Multi-cloud cost programs that didn't compromise reliability, Experience integrating AI-assisted security tooling into a development pipeline
What You'll Do.
Build and maintain Docker/Kubernetes harnesses for repeatable stress and scale testing
Run our multi-cloud footprint with explicit reliability and cost targets
Consolidate CI/CD into reusable
standardized workflows
PR review scaffolding
and the full release lifecycle
Single pane of glass for metrics
Run the bug and vulnerability workflow end to end
Every incident produces a new test
How You'll Work.
Team & Collaboration
used by every core team; foundational hire on a small Platform Engineering team
Communication Scope
communicate clearly
Full Job Description
About Sei Labs Sei Labs builds open sourced technology for the high-performance Sei Blockchain, the first parallelized EVM Layer 1 blockchain designed to scale with the industry. The unique optimizations built into Sei enable Web3 applications to reach Web2 level scale and performance, driving the mass adoption of digital assets. Our teams are comprised of former Google, Goldman Sachs, Robinhood, Nvidia, and Databricks veterans dedicated to onboarding the next billion users onto a vibrant ecosystem of applications. Sei Labs has raised over $30M from top investors including Jump Crypto, Multicoin Capital, Coinbase Ventures, Distributed Global, Hudson River Trading, and Flow Traders. Check out our website https://www.sei.io/ and docs https://www.docs.sei.io/dev-intro for more details. PLATFORM ENGINEERING AT SEI We're building Sei into a world-class L1 for decentralized finance. This role exists to make the safe path the default path for every engineer on the team — observable, tested, reversible, and fast. You'll be a foundational hire on a small Platform Engineering team with a broad mandate. WHAT YOU'LL OWN - Infrastructure & scale testing. Build and maintain Docker/Kubernetes harnesses for repeatable stress and scale testing, used by every core team as a pre-release gate. Run our multi-cloud footprint with explicit reliability and cost targets. - Release engineering & CI/CD. Consolidate CI/CD into reusable, standardized workflows. Own version tagging, hotfix paths, PR review scaffolding, and the full release lifecycle. - Observability. Single pane of glass for metrics, traces, and logs — correlated by block height, powered by OpenTelemetry. HA Prometheus, ELK, defined SLOs on every critical service. - Performance & chaos testing in CI. Automated chaos and performance tests gating 100% of releases. Regressions caught before merge, not by users. - Security & incident response. Run the bug and vulnerability workflow end to end — auditors, Immunefi, triage, postmortem
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