Product Engineer
About Evervault
Evervault is building the security layer of the internet. Developer-first primitives for encryption, tokenization, and secure compute - currently focused on payments, where the stakes (and the compliance burden) are highest.
We help engineering teams collect, process, store, and enrich their most sensitive data - and comply with the frameworks that govern it. Our customers range from early-stage startups to the largest merchants and payment service providers on the internet, including Rippling, Ramp, and Sorare.
We're backed by Index Ventures, Sequoia Capital, Kleiner Perkins, and Frontline Ventures - with angels including Dylan Field (Figma), Olivier Pomel (Datadog), and Alex Stamos (former Facebook CSO).
The Role
We're hiring Product Engineers to join our Cards team in London.
This isn't a "build to spec" role. You'll own problems end-to-end — from talking to customers, to designing the API surface, to shipping production code, to measuring whether it worked.
We’re looking for people with a strong background or interest in building distributed, high-throughput systems and networks in the payments ecosystem. You'll be building core payments infrastructure: tokenization, network integrations, and whatever comes next.
We work mostly in Rust and Node.js, built on AWS. But we care far more about your engineering skill than knowledge of a particular language or framework.
What You'll Work On
Designing and building developer-facing APIs and primitives for data security
Encrypting and decrypting data at tens of thousands of requests per second
Multi-PSP payments orchestration — routing card transactions across processors to optimise cost and acceptance rates
Working with low-level networking primitives to create high-throughput forward and reverse proxies
Leveraging Confidential Computing and secure enclaves to build the most secure systems in the cloud
Developing custom serverless runtimes for Python and Node.js
Shipping full-stack: backend services, APIs, SDKs, UI components, and documentation
Working directly with customers — understanding their payment stacks, debugging integrations, and shaping the roadmap from real problems
Who You Are
Deeply technical. You have strong fundamentals in distributed systems, networking, and high-throughput infrastructure — not just frameworks. You think about problems like global state replication, data consistency, and performance engineering. You care about how things work under the hood and you're comfortable going deep.
Relentlessly product-minded. You think about the developer experience of every API you design. You care about what gets shipped, not just what gets built. You want to build tooling and APIs that developers actually love. You measure your work by impact, not output.
Founder energy. You may have started something before, or you want to one day. Either way, you operate with ownership, urgency, and bias for action. You take pride in working on projects to successful completion — and you don't wait to be told what to do.
An excellent communicator. You write clearly. You can explain complex technical decisions to non-technical people. You're comfortable in front of customers and deeply involved in the product development lifecycle.
Excellent taste. In code, in APIs, in visual design, in documentation. You know what good looks like and you hold yourself and others to a high bar.
Full-stack, not pigeonholed. You're comfortable across the stack — backend, frontend, infrastructure — and you enjoy working with many languages, frameworks, and programming paradigms. You'd rather learn something new than stay in your lane.
Curious. You want to understand how card networks actually work. You dig into RFCs. You read source code for fun. You ask why.
A good human. Kind, generous, low ego. You thrive in a collaborative environment with people from different backgrounds. The kind of person who makes a team better just by being in the room.
Logistics
Location: London, Tues -> Thursday in our Shoreditch office. Mondays & Fridays encouraged.
Visa sponsorship: Unfortunately, Evervault does not currently sponsor visas to work in the UK.