Senior Security Software Engineer (Python / Open Source Tooling)

A direct client of ours in the cybersecurity SaaS space is hiring Senior Engineers to help scale a highly technical, developer-focused platform used by enterprise security teams.Senior Security Software Engineer (Python / Open Source Tooling)Location: Remote (U.S.)Employment Type: Full-TimeCompensation: $150K–$215K base + bonus + equity + benefitsWe are hiring a Senior Security Software Engineer to lead development of a widely used open-source cybersecurity reconnaissance platform and its supporting ecosystem.This role combines deep Python engineering, distributed systems design, open-source leadership, and hands-on security tooling development. You will help drive both the technical roadmap and community direction of a highly visible security platform used by thousands of practitioners worldwide.What You’ll DoOwn and evolve a large-scale Python reconnaissance and scanning engineDevelop and maintain async, event-driven scanning architecturesLead development of a REST/SDK platform and supporting integrationsReview pull requests and mentor open-source contributorsManage release workflows, package publishing, and CI/CD pipelinesEngage directly with the security community through GitHub, Discord, and conference participationHelp shape the commercialization roadmap for advanced platform capabilitiesRequired Qualifications7+ years of professional Python development experienceStrong async programming expertise (asyncio, aiohttp, websockets, httpx, etc.)3+ years of Rust experience in production environmentsDemonstrated open-source maintenance experienceExperience with at least two of the following:DNS enumerationSubdomain discoveryWeb reconnaissanceCloud infrastructure enumerationPort scanningCertificate transparency monitoringOSINT toolingExperience with multiprocessing and event-driven systemsStrong Linux, Docker, and GitHub Actions experienceFamiliarity with Python packaging and distribution workflowsStrong written communication and technical documentation skillsPreferred QualificationsExperience with security tooling ecosystemsKubernetes and Helm experienceYARA integration experienceMCP / LLM-agent integration familiarityExperience speaking at security conferences or community eventsFamiliarity with AGPL/GPL licensing in commercial environmentsWhat Success Looks LikeWithin your first six months, you will:Take ownership of release management and community workflowsHelp stabilize and mature the platform ecosystemDrive architectural improvements and modernization effortsContribute directly to long-term product and platform strategyWhy JoinFully remote U.S.-based teamEquity participationSignificant technical ownership and autonomyWork on widely used security toolingOpportunity to contribute to and shape a respected open-source communityUnlimited PTO401(k) with matchMedical, dental, and vision coverageHome office and conference stipend