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 Platform Engineers to work on the foundational infrastructure that powers everything at Evervault.

You'll work across two areas: the core platform that underpins all of our products, and the Foundations product suite - Relay, Functions, and Enclaves. These are the primitives our customers use to encrypt, decrypt, and process sensitive data at scale.

Relay is a high-throughput network proxy that encrypts and decrypts data in transit - sitting between our customers' services and their APIs, handling thousands of requests per second.

Functions are secure serverless runtimes (Node.js and Python) that process encrypted data without exposing it in plaintext.

Enclaves let developers deploy Docker containers into AWS Nitro Secure Enclaves - confidential computing environments with cryptographic attestation, no persistent storage, and no shell access.

This is low-level, high-stakes infrastructure. Networking primitives, custom runtimes, confidential computing, encryption engines, and the kind of systems work where correctness, performance, and security all matter equally.

You'll own problems end-to-end, from understanding the customer use case, to designing the system, to shipping production code, to operating it at scale.

We work mostly in Rust and Node.js, built on AWS. But we care far more about your engineering fundamentals than knowledge of a particular language or framework.

What You'll Work On

Building and operating high-throughput forward and reverse proxies that encrypt and decrypt data in transit at tens of thousands of requests per second
Designing and evolving custom serverless runtimes for secure code execution in isolated environments
Working with AWS Nitro Enclaves and confidential computing - building tooling for deployment, attestation, and scaling of secure enclave workloads
Developing and maintaining the core encryption engine that powers all of Evervault's products
Designing developer-facing APIs, CLIs, and SDKs for infrastructure primitives
Working with low-level networking: TLS termination, mTLS, HTTP CONNECT proxying, VSock channels, and custom DNS
Building observability, transaction logging, and debugging tooling for environments where traditional monitoring doesn't apply
Improving deployment pipelines, CI/CD, and infrastructure automation across the platform
Performance engineering - profiling, benchmarking, and optimising latency and throughput in latency-sensitive paths
Working directly with customers - debugging integrations, understanding their architectures, and shaping the roadmap from real problems

Who You Are

Excellent taste. In code, in APIs, in documentation, in system design. You know what good looks like and you hold yourself and others to a high bar.

Full-stack, not pigeonholed. You're most at home in backend and infrastructure - but you're comfortable across the stack when the problem demands it. You'd rather learn something new than stay in your lane.

Curious. You read RFCs. You've opinions on different enclave implementations. You know why TLS 1.3 matters. You dig into source code for fun. You ask why.

Relentlessly product-minded. You're building developer infrastructure - and you care deeply about how it's used. You think about the developer experience of every API and CLI you design. You measure your work by adoption and reliability, not just technical elegance.

A systems thinker. You have deep fundamentals in distributed systems, networking, and operating systems - not just application-level frameworks. You think about memory models, socket behaviour, TLS handshakes, and the performance implications of design decisions. You're comfortable working at layers of the stack most engineers never touch.

Comfortable in the deep end. Confidential computing, custom runtimes, encryption at scale - these aren't checkbox skills, they're the domain. You don't need to know all of it coming in, but you need to be the kind of engineer who gets excited about this level of depth and learns fast.

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 problems to completion - and you don't wait to be told what to do.

An excellent communicator. You write clearly. You can explain how a Nitro Enclave attestation protocol works to a customer, and why a proxy architecture decision matters to a non-technical stakeholder. You're comfortable in front of customers and deeply involved in the product development lifecycle.

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.

Our Values

Sound

We care deeply - about each other, our communities, and the people we work with. Kind, generous, open-minded, and invested in each other's success.

Curious

Deep thinking and the relentless pursuit of knowledge. We learn publicly, share what we know, and believe extraordinary work comes from extraordinary thinking.

Optimistic

We believe in what we're building and keep the faith. Collaboration thrives where there is enthusiasm and active optimism.

How We Work

Wow the User. Exceptional is our standard. Our fundamental product is trust.

Sign Your Name. High quality, high bar. We only ship work we're proud to put our name on.

Push the Limits. We move with unusual pace and energy. If there's a way, we'll find it. If there isn't, we'll build it.

Win as a Team. Collaborative glory over individual heroics. We pool resources, challenge each other, and celebrate together.

Why Evervault

Real infrastructure, real scale. We process millions of transactions through our proxy and encryption infrastructure.
Small team, outsized impact. ~30 people. Every engineer shapes the product and the company.
Hard, interesting problems. Confidential computing, custom serverless runtimes, high-throughput encryption proxies, network-level security primitives. This is some of the most technically demanding infrastructure work you'll find at a startup.
World-class backers. Sequoia, Index Ventures, Kleiner Perkins, and angels from Figma, Datadog, and LinkedIn.
Growing fast. Scaling 4x this year. You'll help build the team and the culture.
Developer-first DNA. We're building for engineers, and we're built by engineers who care about craft.

Benefits

Competitive salary
Stock options with extended exercise window
Flexible working hours
Generous vacation days
Private health insurance
Catered lunch

Logistics

Location: (Tues -> Thursday in office, Monday & Friday strongly encouraged).
Visa sponsorship: Unfortunately, Evervault does not currently sponsor visas to work in the UK or Ireland.

Senior Software Engineer

Benefits

Job Description