Join as a founding engineer to build a platform protecting the software supply chain from malicious activity. Working directly with the CTO, you will own the end-to-end development of analysis pipelines and developer-centric security tools. This role is pivotal in moving the product from closed beta to a high-impact public launch.
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Founding Full Stack Engineer at Ossprey
Ossprey is looking for a Founding Full Stack Engineer to secure the world's open-source supply chain. Following a successful pre-seed round, you'll work directly with the CTO to move their real-time protection platform from closed beta to public launch. If you're a Python and React expert who wants to solve high-leverage security problems using AI and scale cloud infrastructure from the ground up, this is your chance to define the engineering culture of a London-based startup making waves in cybersecurity.
About this role
Role overview
About the company
Ossprey
Software
Ossprey.com - Pre-seed cybersecurity startup building real-time open-source protection.
What you'll do
What you will do
- Design and implement robust Python backends and React frontends to make complex supply chain risks obvious and actionable for developers.
- Build and scale data analysis pipelines on AWS that inspect source code and dependencies at the repository level in real time.
- Integrate LLM and Machine Learning capabilities to improve threat detection quality and provide clear, automated explainability for security alerts.
Who you are
Who this is a fit for
- Proactive builder with full-stack depth in Python, React, and AWS who thrives in the high-ownership, ambiguous environment of an early-stage startup.
- Strong communicator with a remote-first mindset, capable of translating customer feedback into technical specs and shipping iterative improvements rapidly.
- Security-conscious engineer with an interest or background in supply chain security, SAST/DAST, or building tools that developers actually trust and enjoy.
Why this role
Why this role is remarkable
- True founding opportunity to shape the product architecture and engineering culture from the ground up during a critical pre-launch phase.
- High-leverage technical challenges involving real-time analysis pipelines, LLM-powered detection, and scaling AWS infrastructure to handle global open-source data.
- Recently closed pre-seed funding with a clear path from an existing MVP and closed beta to a full public market release.
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