Job Title

Senior Frontend Engineer

Salary

£70k-£150k + Equity

Company Description

Evervault Limited - VC-backed fintech infrastructure for encryption and data security

Job Description

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.

Location

London, UK

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.

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.

The ideal candidate

• 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.