Contract: Inside IR35 * Location: Remote-based, with the potential requirement to work from Sheffield 2-days per week if a new office policy is introduced. We're partnering with a leading financial services client on a strategic Identity and Access Management transformation programme and are looking for an experienced MFA Engineer to help deliver modern authentication capabilities across a complex enterprise environment. This is a hands-on engineering role requiring strong experience across MFA, IAM and authentication technologies, alongside the ability to work effectively with architecture, cybersecurity, application and infrastructure teams. Key Requirements: * Strong hands-on experience engineering MFA and SSO within enterprise IAM environments * Deep understanding of modern authentication and federation protocols, particularly OIDC/OAuth2 and SAML * Experience with at least one enterprise Identity Provider platform * Strong understanding of authentication vs authorisation, identity lifecycle and trust boundaries * Working knowledge of PKI, certificates, TLS and key management * Experience operating production IAM services, including monitoring, incident and change management * Strong communication and stakeholder management skills, with the confidence to challenge and influence technical decisions * Ability to work across architecture, cybersecurity, infrastructure and application teams Desirable: * Entra ID / Azure AD experience * FIDO2/WebAuthn and phishing-resistant MFA experience * PowerShell and/or Python scripting and API experience * Zero Trust and adaptive/risk-based authentication knowledge * PAM and privileged authentication experience * Cloud and hybrid identity experience across Azure, AWS or GCP * Experience in financial services or other regulated environments * Relevant IAM, security or Microsoft Identity certifications This is a key opportunity to play a hands-on role in a major enterprise IAM transformation, helping shape and deliver the future of authentication across a complex financial services environment