Principal - IAM Advanced Authentication

GSK remains committed to achieving bold commercial ambitions for the future. By 2031, we aim to deliver £40 billion in annual sales, leveraging our existing strong performance momentum to significantly increase our positive impact on the health of billions of patients globally. Our Ahead Together strategy is centered on early intervention to prevent and alter the course of disease, thereby protecting people and supporting healthcare systems. Our diverse portfolio consists of vaccines, specialty medicines, and general medicines. Through continuous innovation and a dedicated focus on scientific and technical excellence, we strive to develop and launch new, groundbreaking treatments that address critical health challenges. Job Purpose : The Principal Engineer is a senior individual contributor responsible for designing, building, automating and improving GSK’s enterprise certificate services. Reporting to the Lead, PKI, the role translates approved architecture, security standards and service priorities into secure, resilient production capabilities; makes day-to-day engineering decisions within those guardrails; and serves as a technical escalation point for complex PKI issues. About the team : The PKI team provides trusted machine, device, user and application identities across GSK. The team engineers and operates enterprise certificate authorities and certificate lifecycle services, enables automated certificate issuance and renewal, and supports secure communications across on-premises, cloud and operational technology environments. It works with security architecture, platform operations, application teams and service partners to maintain clear ownership from solution design through production support. Key responsibilities: This role will provide you the opportunity to deliver key engineering activities and deepen your technical expertise. These responsibilities include some of the following: • Design, build, configure and maintain enterprise certificate authority and registration authority services. • Engineer secure certificate issuance, renewal, revocation and recovery processes for users, devices, applications and workloads. • Automate certificate discovery, inventory, issuance, renewal, revocation and reporting using APIs, scripting, infrastructure as code and enterprise certificate lifecycle management platforms. • Integrate PKI with Microsoft and Linux platforms, network and security devices, cloud services, DevOps pipelines, applications, mobile and endpoint management platforms, and operational technology environments. • Implement certificate profiles, templates and policy controls in line with approved architecture, Certificate Policy and Certification Practice Statement requirements, security standards and cryptographic requirements. • Monitor service health, capacity, availability, certificate expiry, issuance quality and control effectiveness; define actionable alerting and operational thresholds; and remediate vulnerabilities, performance constraints or configuration drift. • Troubleshoot complex certificate, trust-chain, revocation, protocol and interoperability issues and provide technical leadership during incidents. • Plan and execute upgrades, migrations, key ceremonies, backup and restoration validation, disaster recovery tests and service improvements with appropriate change, security and evidence controls. • Produce and maintain engineering designs, build documentation, runbooks, test evidence and integration guidance. • Partner with the PKI Lead, operations, architecture, security, audit, application teams and service partners; mentor engineers; review technical designs and changes; and communicate engineering risks, dependencies and recommendations to technical and non-technical stakehol