Software Engineer in Cardiff

As a Software Engineer, you will play a critical role in delivering secure and seamless customer experiences through modern identity and access management solutions. You should have a strong foundation in CIAM concepts and protocols, along with hands-on experience in developing and operating secure applications across web or mobile.

Working closely with Squad Leads, Senior Engineers and cross-functional teams, you’ll embed a culture of continuous improvement, proactive incident management, and operational excellence.

• Help design, implement, and maintain core authentication and authorization services, including login, registration, and session management.
• Design, implement, and maintain integrations with CIAM platforms and SDKs (e.g., Auth0, Okta, Ping ID) across web and mobile applications, ensuring the software delivered is performant, secure and scalable.
• Build and maintain monitoring and alerting solutions to ensure observability and proactive incident response.
• Contribute to CI/CD pipeline design, infrastructure as code, and deployment automation.
• Develop automation and tooling to reduce toil and improve delivery consistency.
• Document technical designs, solutions, and operational procedures to support collaboration and sustainability.

• Champion and embed coding best practices and standards.
• Actively contribute to peer reviews and encourage a culture of continuous feedback.
• Drive engineering maturity through shared standards, tooling, and modernisation efforts.
• Raise and track technical debt, driving its resolution across the platform estate.
• Understanding of emerging technologies and their suitability to business demands.

• Collaborate with engineers across squads, architecture, security, and platform teams to support shared goals.
• Communicate effectively with both technical and non-technical audiences.
• Participate in Agile ceremonies, ensuring engineering considerations are included in backlog prioritisation and sprint planning.

• Proven experience as an Engineer, delivering solutions that included authentication (Authn) and authorization (Authz).
• Strong understanding of CIAM protocols, including OAuth2, OpenID Connect, SAML, and SCIM.
• Hands-on experience with CIAM platforms (e.g., Auth0, ForgeRock, Okta, Ping Identity), including configuration and troubleshooting.
• Solid grasp of security best practices, covering authentication, authorization, data protection, token handling, and OWASP guidelines.
• Working knowledge of major cloud platforms (Azure, GCP, or AWS), with experience in containerization (Docker, Kubernetes) and infrastructure as code (Terraform).
• Familiarity with CI/CD pipelines, concepts and tools (e.g. Azure DevOps, GitHub Actions).
• Experience with testing frameworks, Unit testing and acceptance testing.
• Proficient with version control using GIT and delivery via Agile methodologies.

• Proficiency in modern web development (Angular, React and NestJS), including API development and component design.
• Awareness of Native authentication flows using SDKs from common CIAM vendors (e.g., Auth0, Okta).

• Analytical Thinking: Breaks down complex problems and identifies root causes and solution paths.
• Adaptability: Responds constructively to shifting priorities and operational incidents.
• Initiative & Innovation: Drives proactive improvement, automation, and performance optimisation.
• Collaboration: Works effectively across teams, builds trust, and shares knowledge.
• Communication: Communicates clearly and appropriately for the audience, including stakeholders and engineers.
• Customer Focus: Keeps reliability, performance, and user experience central to engineering decisions.

We take pride in being a diverse and inclusive business. It's a place where you can Be You, and show up as you are. We’re committed to fostering a people-first culture where everyone is accepted, supported, and empowered to be brilliant. You can Grow And Progress at a pace and direction that suits you, Make A Difference for our customers and each other, and Share in Our Future with all colleagues eligible for up to £3,600 of free shares each year after one year of service.

Everyone receives 33 days holiday (including bank holidays) when they join us, increasing the longer you stay with us, up to a maximum of 38 days (including bank holidays). You also have the option to buy or sell up to an additional five days of annual leave.

We’re proud of our people-first culture. In fact, we've been recognised as a Great Place to Work for Women, a Great Place to Work for Wellbeing, and an overall Great Place to Work for over 25 years! We’re fully committed to making sure your progression is not slowed or halted by barriers related to race, gender, age, sexuality or any of the protected characteristics.

Our fantastic benefits make sure our colleagues have a great work-life balance.

As a Disability Confident Leader, for candidates with a disability or long-term health condition, that opt into the Disability Confident scheme, we’ll invite a fair and proportionate number of applicants that meet the essential requirements of the role to the first stage of our selection process.