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. 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.
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Location
Remote (United Kingdom)
Compensation
Not Disclosed + Equity
Company
Ossprey
Role overview
Software
Ossprey is a London-based cybersecurity startup that provides a platform to detect malicious open source code and secure software supply chains in real time. It maps dependencies, inspects source code at the repo level, uses proprietary AI Code Scanner to identify threats, and offers automated policy enforcement for high-velocity environments.
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 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 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.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Ossprey wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.