Senior / Staff Engineer - Platform at Sei Labs

<p style="min-height:1.5em"><strong>About Sei Labs</strong></p><p style="min-height:1.5em">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.</p><p style="min-height:1.5em">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.</p><p style="min-height:1.5em">Sei Labs has raised over $30M from top investors including Jump Crypto, Multicoin Capital, Coinbase Ventures, Distributed Global, Hudson River Trading, and Flow Traders.</p><p style="min-height:1.5em">Check out our <a target="_blank" rel="noopener noreferrer" class="postings-link" href="https://www.sei.io/">website</a> and <a target="_blank" rel="noopener noreferrer" class="postings-link" href="https://www.docs.sei.io/dev-intro">docs</a> for more details.</p><p style="min-height:1.5em"></p><h1>Platform Engineering at Sei</h1><p style="min-height:1.5em">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.</p><p style="min-height:1.5em"></p><h2>What you'll own</h2><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Infrastructure &amp; scale testing.</strong> 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.</p></li><li><p style="min-height:1.5em"><strong>Release engineering &amp; CI/CD.</strong> Consolidate CI/CD into reusable, standardized workflows. Own version tagging, hotfix paths, PR review scaffolding, and the full release lifecycle.</p></li><li><p style="min-height:1.5em"><strong>Observability.</strong> 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.</p></li><li><p style="min-height:1.5em"><strong>Performance &amp; chaos testing in CI.</strong> Automated chaos and performance tests gating 100% of releases. Regressions caught before merge, not by users.</p></li><li><p style="min-height:1.5em"><strong>Security &amp; incident response.</strong> Run the bug and vulnerability workflow end to end — auditors, Immunefi, triage, postmortems. Every incident produces a new test, metric, or runbook.</p></li></ul><p style="min-height:1.5em"></p><h2>What we're looking for</h2><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>5+ years building production systems at scale