Senior Platform Engineer in Cardiff

About us

Admiral Money is the dynamic lending arm of Admiral Group, offering personal loans, motor finance, and homeowner loans since 2017. We’re building something special for our customers and are looking for curious, driven individuals ready to learn, take on challenges, and make an impact. We’re proud to be a certified Great Place to Work for over 25 years, with recognition for Women and Wellbeing. Our inclusive culture empowers everyone to Be You.

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Role Purpose

We're seeking a Senior Platform Engineer to work across multiple delivery squads within our TSS Engineering Chapter. This is a highly technical, hands‑on role focused on Cloud Infrastructure, Platform Engineering, DevOps, Security Engineering and AWS architecture. You’ll take ownership of complex cross-functional initiatives across CI/CD, container orchestration, automation and cloud governance, while helping to establish engineering standards and best practices. As a technical specialist rather than a people manager, you’ll also mentor engineers, share expertise, and help build capability across the chapter. Working closely with engineering communities in areas such as Terraform, Kubernetes, Identity and Cloud Architecture, you’ll play a key role in promoting collaboration, knowledge sharing and technical excellence across teams.

Key Responsibilities

• Work where your expertise adds the most value. No two weeks will look the same in this role. You’ll work across multiple squads, supporting a range of technical challenges and priorities. One week you may be architecting a Kubernetes upgrade with the Platform team, the next helping improve observability across Cloud Infrastructure, or partnering with DevSecOps on secrets management and security controls.
• Build and evolve cloud platform capabilities. Design, implement and improve AWS infrastructure, including networking, IAM, security controls and container platforms such as Kubernetes. You’ll contribute to technically complex initiatives spanning infrastructure, CI/CD, automation, identity management and cloud governance, ensuring solutions remain secure, scalable and compliant.
• Share knowledge and grow capability. Help build engineering capability across the Chapter by mentoring colleagues, facilitating knowledge sharing and promoting best practices. You’ll contribute to communities of practice in areas such as Infrastructure-as-Code, Kubernetes, Identity and Cloud Architecture, helping teams adopt modern approaches and develop their technical expertise.
• Drive reliability, efficiency and governance. Work with teams to optimise cloud spend, improve observability, and establish effective monitoring and alerting. You’ll help balance innovation with operational reliability, security and regulatory requirements.
• Shape technical standards and architecture. Contribute to architecture decisions, engineering standards and platform strategy. You’ll help translate business needs into practical technical solutions and support engineers in understanding how infrastructure, platform, identity and security capabilities work together.
• Embed security by design. Security will be a key consideration in everything you do. Working closely with Cyber Engineering, you’ll help establish secure‑by‑default patterns, implement least‑privilege access controls, and build compliance and audit requirements into infrastructure solutions. You’ll promote security as an enabler of delivery, helping teams move quickly while maintaining strong controls.

Skills and experience

Essential

• 5+ years' hands‑on Cloud Platform Engineering experience, with AWS as a primary focus.
• Expert knowledge of AWS architecture, services and best practices; AWS Solutions Architect Professional certification (or equivalent experience).
• Strong Infrastructure-as-Code (IaC) skills using Terraform, AWS CDK or similar tools, with experience applying IaC within engineering teams.
• Demonstrable experience designing, implementing and operating secure, scalable VPC architectures.
• Hands‑on experience with Kubernetes or container orchestration platforms such as ECS or Fargate.
• Expertise in CI/CD pipelines using GitHub Actions, GitLab CI or similar modern tooling.
• Proficiency in Python or similar scripting languages for automation and tooling.
• Experience mentoring engineers and contributing to technical standards, best practices and knowledge sharing.
• Proven ability to collaborate across multiple teams and deliver complex, interconnected technical workstreams.
• Experience working within regulated, security‑focused or highly governed environments.
• Comfortable operating as a technical specialist across multiple squads, supporting a variety of priorities and initiatives.

Desirable

• Experience working in multi‑cloud environments (AWS, Azure and/or GCP).
• Identity and Access Management (IAM) platform experience, such as Okta, Entra ID or federation patterns.
• Experience optimising cloud costs and implementing FinOps practices.
• Understanding of DevSecOps principles and security‑first infrastructure design.
• Exposure to microservices and distributed architecture patterns.
• Experience using GenAI tools and code generation platforms, such as Claude or GitHub Copilot.
• Familiarity with Cyber Security Engineering principles and best practices.

Admiral: Where You Can

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. If you need any adjustments or support with your application or during the recruitment process, just let us know.