Identity & Access Systems Engineer
Job Description
[Up to c. £325k Comp Package | Hybrid Working]
Role Overview
We’re supporting a highly technical trading firm as it strengthens its Identity and Access capabilities within IT Security. This role sits at the intersection of systems engineering and identity security, with responsibility for designing, implementing, and operating IAM controls across a hybrid Windows environment spanning on-prem Active Directory, Entra ID, Microsoft 365, and Azure-hosted services. This is a hands-on individual contributor position focused on real engineering outcomes. You’ll help shape how identity, authentication, and access are enforced across the Windows estate, deciding where risk exists and how remediation efforts should be prioritised. The role has grown out of increased Entra and hybrid identity workload and offers meaningful ownership rather than narrow execution...
Key Responsibilities
- Design, implement, and operate IAM solutions across on-prem and cloud environments (AD, Entra ID, ADFS, M365, Azure)
- Lead the validation and improvement of identity security controls to reduce attack paths between internal and externally hosted platforms
- Act as a technical authority on Microsoft identity and access patterns, advising infrastructure and engineering teams
- Identify gaps in existing identity implementations and drive practical, scalable remediation
- Design and support authentication and SSO flows using standards such as OIDC, SAML, OAuth, Kerberos, and LDAP
- Define and maintain secure certificate and cryptographic practices, including templates, policies, and key standards
- Manage identity-related Azure resources using structured, code-driven approaches
- Automate identity and certificate lifecycle workflows where appropriate
- Contribute to architectural decisions around cloud adoption and identity integration
What You’ll Bring…
- 5+ years’ experience in systems, infrastructure, or identity-focused engineering roles (profiles up to ~12 years are well aligned)
- Strong Windows fundamentals, including hands-on Active Directory experience
- Practical experience designing and implementing IAM systems, not just administering them
- Solid knowledge of Microsoft identity platforms (Entra ID, Microsoft 365, Azure IAM)
- Understanding of modern authentication and federation technologies
- Experience working in hybrid identity environments
- Some scripting or automation capability (PowerShell or similar) - deep scripting is a plus, not a requirement
- Sound technical judgement and the ability to prioritise remediation in a fast-moving environment
- Clear communication skills and confidence working cross-functionally
...
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