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

What we're looking for

  • 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

Job Details

Company
Explore Group
Location
City of London, London, United Kingdom
Posted