Flashbots - Sandbox Engineer
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Requirements
• You enjoy being the person who makes systems dependable. Specifically with runbooks, automation, alerts, and a clear mental model of failure cases. • You prefer ownership over handoffs and can drive a roadmap while collaborating effectively with domain experts. • You can learn quickly in unfamiliar domains (MEV/searcher workflows/TEE concepts) without needing prior crypto experience. • Exposure to confidential computing / TEEs (e.g., Intel TDX/SGX) or adjacent isolation tech (microVMs, sandboxing, attestation). • Experience with reproducible build pipelines or hardened execution environments like Nix, Bazel, hermetic builds and OCI hardening. • History of maintaining open-source infra/tooling or running a serious bare metal setup. • Details that matter • Unlimited PTO with a high level of freedom and autonomy for your work • Attractive health coverage package for US employees • $3000 Yearly budget for your individual learning and development goals • Work alongside the brightest minds in the crypto space • Help save the world by ensuring crypto remains decentralized, permissionless and censorship-resistant • Remote working, while we have a preference for EU/US time zones, you can work from anywhere in the world • Paid travel - 2 x team on-site in different parts of the world per year plus periodic travel to events • At Flashbots, we are committed to building a diverse and inclusive team. We welcome applications from all qualified candidates regardless of gender, race, ethnicity, religion, sexual orientation, age, or disability status.
Responsibilities
• Own reliability end-to-end for the auction sandbox and related services: deployment, upgrades, incident response, and operational hygiene. • Audit and consolidate components into a coherent system with a clear roadmap, interfaces, and single DRI ownership. • Build and automate containerized environments for latency-sensitive workloads including reproducible builds and safe defaults. • Create first-class operator + user docs: runbooks, examples, troubleshooting guides, and “known failure modes” playbooks that users can trust. • Partner across teams (TEE, infra, product) to expand sandbox capability while tightening security, isolation, and developer experience. • What we look for • You have operated Linux production systems with real ownership like on-call/incident responsibility, upgrades, and long lived maintenance. • Strong Linux + networking fundamentals: you debug below the dashboard in processes, sockets, filesystems, resource isolation. • Hands-on containers experience (Docker/Podman, image/build workflows, debugging inside containers). Orchestration familiarity is a plus. • A track record as a DRI for a complex service used by others including doing the “boring” reliability work. • You write excellent docs, not as an afterthought, but as part of how systems become scalable and trustworthy. • User empathy: you ask about constraints, workflows, and success metrics before shipping changes that break someone’s setup.
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