Software Engineer - Platform

Software Engineer - Platform Dublin / London Open positions 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.