Senior Security Software Engineer (Python / Open Source Tooling)
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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-Time
Compensation: $150K–$215K base + bonus + equity + benefits
We 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 Do:
- Own and evolve a large-scale Python reconnaissance and scanning engine
- Develop and maintain async, event-driven scanning architectures
- Lead development of a REST/SDK platform and supporting integrations
- Review pull requests and mentor open-source contributors
- Manage release workflows, package publishing, and CI/CD pipelines
- Engage directly with the security community through GitHub, Discord, and conference participation
- Help shape the commercialization roadmap for advanced platform capabilities
Required Qualifications:
- 7+ years of professional Python development experience
- Strong async programming expertise (asyncio, aiohttp, websockets, httpx, etc.)3+ years of Rust experience in production environments
- Demonstrated open-source maintenance experience
- Experience with at least two of the following:
- DNS enumeration
- Subdomain discovery
- Web reconnaissance
- Cloud infrastructure enumeration
- Port scanning
- Certificate transparency monitoringOSINT tooling
- Experience with multiprocessing and event-driven systems
- Strong Linux, Docker, and GitHub Actions experience
- Familiarity with Python packaging and distribution workflows
- Strong written communication and technical documentation skills
Preferred Qualifications:
- Experience with security tooling ecosystems
- Kubernetes and Helm experienceYARA integration experienceMCP / LLM-agent integration familiarity
- Experience speaking at security conferences or community events
- Familiarity with AGPL/GPL licensing in commercial environments
What Success Looks Like: Within your first six months, you will:
- Take ownership of release management and community workflows
- Help stabilize and mature the platform ecosystem
- Drive architectural improvements and modernization efforts
- Contribute directly to long-term product and platform strategy
Why Join:
- Fully remote U.S.-based team
- Equity participation
- Significant technical ownership and autonomy
- Work on widely used security tooling
- Opportunity to contribute to and shape a respected open-source community
- Unlimited PTO401(k) with match
- Medical, dental, and vision coverage
- Home office and conference stipend