You will lead the architectural design of a high-integrity, low-latency mobile SDK and proof pipeline at the intersection of sensor fusion, on-device machine learning, and programmable cryptography. As a founding technical leader, you will translate strategic vision into global infrastructure that verifies physical presence, ensuring privacy-by-design while building unbreakable systems for commercial deployment.
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London, United KingdomNot Disclosed
Principal Engineer at VC-backed deep-tech startup
Are you ready to build the return of the real? We are looking for a Principal Engineer to join a well-funded deep-tech startup in London to architect a new cryptographic primitive for physical presence. You will work alongside MIT professors and repeat founders to build a high-integrity SDK that merges sensor fusion, on-device ML, and zero-knowledge proofs. This is a rare 0→1 opportunity to define the security architecture for the next generation of payments, insurance, and logistics infrastructure. If you have deep experience in Android systems, signal processing, or edge compute and want to solve problems that AI cannot fabricate, this is the role for you.
Overview
Role overview
Company
About the company
VC-backed deep-tech cryptography startup
Responsibilities
What you will do
- Architect and build the high-integrity SDK and proof pipeline focusing on Android systems and low-level optimization.
- Implement on-device ML models that convert multimodal sensor data into real-time, verified location proofs.
- Lead the integration of zero-knowledge proofs (ZKPs) to achieve privacy-preserving verification without compromising performance.
Candidate profile
Who this is a fit for
- 5+ years of experience in spatio-temporal systems, inertial sensors, or high-performance on-device ML for mobile environments.
- Proven track record of shipping high-reliability, low-latency mobile SDKs and mastery of Android systems programming.
- Strong background in signal processing or cryptography, with the ability to harden cutting-edge research into resilient software.
What makes it remarkable
Why this role is remarkable
- Work on a foundational mission to make physical presence cryptographically verifiable, creating a new primitive for digital security.
- Collaborate directly with founders including top-tier academic experts and repeat entrepreneurs backed by world-class venture capital firms.
- Drive high-impact 0→1 engineering in a high-agency environment, moving research breakthroughs from paper to production-ready global systems.
Jack & Jill
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.
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 14 million jobs daily and introduces you directly to hiring managers.
How does this work?
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 it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
Jack