Join a high-caliber team of 25 building the encryption infrastructure used by Ramp, Rippling, and Sorare. As a Product Engineer on the Cards team, you will own the full lifecycle of payment primitives, from designing APIs to shipping production code that secures billions in annual transaction volume across global card networks.
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London, United Kingdom£70k-£140k + Equity
Product Engineer — Cards at Sequoia-backed payments infrastructure startup
Join an elite team of 25 engineers building the data security backbone for the modern payments web. Backed by Sequoia and Index Ventures, this $46M-funded startup processes over $5 billion in transactions for industry leaders like Ramp and Rippling. We're looking for product-minded engineers to own the Cards infrastructure end-to-end, building secure tokenization and network integrations using Rust and TypeScript. If you have a high bar for craft and want to work on hard infrastructure problems where your code secures the world's most sensitive data, this Shoreditch-based role offers massive impact and equity upside.
Overview
Role overview
Company
Evervault Limited
Software
Sequoia-backed payments infrastructure startup ($46M total raised)
Responsibilities
What you will do
- Design and build developer-facing APIs and primitives for card data security, tokenization, and network integrations.
- Collaborate directly with enterprise customers to understand their payment stacks and translate complex security needs into production code.
- Own features end-to-end across the full stack, including backend services, SDKs, UI components, and technical documentation.
Candidate profile
Who this is a fit for
- 3-10+ years of experience in product engineering with strong fundamentals in distributed systems, networks, and infrastructure.
- Proven ability to ship high-quality developer tools or infrastructure products with a relentless focus on API design and user experience.
- Deep curiosity and a bias for action; prior experience in payments domain (3DS, card networks, or compliance) is a significant advantage.
What makes it remarkable
Why this role is remarkable
- Work at a Tier-1 VC backed startup (Sequoia, Index, Kleiner Perkins) that recently closed a $25M Series B and is scaling 4x year-over-year.
- Direct impact on core infrastructure: you aren't building to spec, you're shaping the future of how card data is tokenized and processed at scale.
- Exceptional engineering culture with a high bar for craft, working primarily with Rust and TypeScript in a hybrid Shoreditch-based team.
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.
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