Lead Security Engineer

Overview

This range is provided by Wave Talent. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Job Title : Senior Security Engineer

Location : London (3 office days / week)

Industry : B2B SaaS / Procurement & Spend Control

Stage : Series A, backed by tier-1 VCs

Benefits

• Founding security engineer role with massive ownership
• Modern serverless stack (AWS, IaC, TypeScript)
• Equity with real upside
• High-impact opportunity to build security from the ground up

This role doens't offer relocation or sponsorship

Responsibilities

You’ll be deeply embedded in the platform engineering team, building new security features, rolling out testing frameworks, and hardening serverless AWS infrastructure. Security here isn’t an afterthought; you’ll design it in from the start, making sure the stack (AWS, serverless, TypeScript, IaC) stays ahead of evolving threats.

Alongside the engineering, you’ll play a critical role in customer conversations, providing reassurance to enterprise clients, walking them through architecture, frameworks, and secure connections, and showing how security is built into the software lifecycle. About 10–15% of your role will be commercial-facing, enabling revenue and building trust with customers.

This is a senior / staff-level role where high ownership, passion for delivery, and the ability to make meaningful change are essential. You’ll have the chance to build the security function, shape culture, and scale security as the company grows.

Must have requirements

Bonus points for experience with

Seniority level

Employment type

Job function

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