Explore Group

Lead Engineer — Identity & Authentication

London
Posted about 1 month ago

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Lead Engineer — Identity & Authentication

About the opportunity

A high-growth, internationally operating digital finance business is seeking a Lead Engineer to take ownership of identity and authentication at the core of their platform. This is a pivotal role within a security-first engineering culture, working across a product that operates at scale in a tightly governed regulatory landscape.

You will have genuine ownership — shaping architecture decisions, mentoring engineers, and driving a roadmap that touches millions of users across multiple jurisdictions.

What you'll be doing

Architect, build, and continuously improve identity and authentication infrastructure at scale Balance frictionless user experience with stringent compliance and regulatory obligations Lead technical decision-making across authentication protocols, session management, and access control Partner with security, product, and platform teams to embed identity best practices across the stack Drive improvements to systems that operate across multiple regulated markets simultaneously Mentor and technically guide a team of engineers working within your domain

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What we're looking for

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Proven engineering background within heavily regulated sectors — banking, payments, or digital assets Deep hands-on experience designing and scaling identity and authentication systems Strong knowledge of security frameworks and compliance standards including SOC 2, ISO 27001, and PCI-DSS Fluency with modern authentication protocols such as OAuth 2.0, OpenID Connect, SAML, and WebAuthn Track record of leading technical work in fast-moving, high-availability environments A security-minded engineering philosophy with an eye for both developer and end-user experience

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