You will join the Cards team to build core payments infrastructure that tokenizes and secures sensitive data at scale. As a Product Engineer, you will own the entire lifecycle of card security primitives, designing developer-facing APIs and shipping full-stack solutions that power transaction volume for industry leaders like Ramp and Rippling.
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London, UK£70k-£150k + Equity
Senior Frontend Engineer at Evervault Limited - VC-backed fintech infrastructure
Join Evervault, the Sequoia-backed security startup building the encryption layer for the internet's payment stack. We are looking for Product Engineers to join our London Cards team to design core APIs and primitives that tokenize billions in transactions for companies like Ramp and Rippling. This is a rare opportunity to own critical infrastructure end-to-end at a high-growth Series B company where technical craft and developer experience are the top priorities. If you are a product-minded engineer who thrives on solving hard problems in Rust and TypeScript, we want to talk to you.
Overview
Role overview
Company
Evervault Limited
Software
Evervault Limited - VC-backed fintech infrastructure for encryption and data security
Responsibilities
What you will do
- Design and build robust, developer-facing APIs and UI components for secure card data tokenization and orchestration.
- Work directly with customers to understand their payment stacks, debug complex integrations, and shape the product roadmap based on real-world needs.
- Own features end-to-end, moving across the stack from backend services in Rust to frontend SDKs and documentation in TypeScript.
Candidate profile
Who this is a fit for
- Significant experience shipping production-grade products, with 3-10+ years in software engineering and a strong foundation in CS, math, or physics.
- Deeply product-minded with a relentless focus on developer experience and the ability to articulate technical decisions clearly to customers.
- Strong technical taste and a desire to go deep into payments domain expertise, including card networks, encryption, and distributed infrastructure.
What makes it remarkable
Why this role is remarkable
- Solve complex infrastructure challenges involving card network integrations, 3D Secure, and confidential computing at a high-growth startup processing $5B+ annually.
- Join an elite ~25-person team backed by tier-one investors including Sequoia Capital, Index Ventures, Kleiner Perkins, and Ribbit Capital.
- Work in a developer-first environment where you have a direct line to product direction and ship code that serves the internet's biggest merchants.
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