Senior Security Engineer

About the Role

About JitoJito builds the market layer of Solana: the execution, capital, and incentive infrastructure behind the network s onchain economy. That includes the validator client running the majority of Solana stake, BAM (a new framework for verifiable ordering, pre-execution privacy, and programmable blockspace), JitoSOL (the leading liquid staking token on Solana), and JTX (trading built directly on our own market infrastructure).We are a lean, high-density team. Everyone here owns real surface area, works in the open, and ships at pace. The engineers on this team are the people market makers call when milliseconds matter.About the RoleWe re growing our security team and looking for an engineer who can own a broad operational and technical scope: someone equally at home triaging an access request, running a security review, or building a custom testing framework. You ll report directly to the Head of Security, working closely to strengthen and scale our security posture across the organization.What You ll Do• Identity and access management: provisioning, lifecycle operations, and monitoring for critical changes• Security reviews across our product portfolio: threat modeling, code review, fuzzing, and functional testing• Day-to-day bug bounty operations: triage, remediation tracking, and escalation of high-severity findings• AI security research and tooling: adversarial testing frameworks for agent controls, with a focus on reusable patterns• Software supply chain monitoring: malicious package detection beyond standard CVE scanning• External penetration test coordination: scoping, logistics, and post-engagement remediation tracking• Compliance documentation and evidence gathering as requirements emergeWhat We re Looking For• A software engineering background is essential: you ve built production systems, and that foundation shapes how you approach security• You ve since moved into product security and are fluent in the full lifecycle: threat modeling, secure design...