Senior Software Engineer

We are looking for an enthusiastic and inquisitive Senior Software Engineer with a passion for building modern, modular, and high-performing frontend applications. This role focuses on the design, delivery, and maintenance of micro frontend (MFE) architectures, enabling scalable and independently deployable user experiences across our platforms.

You will work extensively with React, NestJS, and related technologies, contributing to both frontend and backend-for-frontend (BFF) solutions. With a DevSecOps mindset, you will build secure, performant, and resilient applications using modern software engineering practices, automation, and continuous improvement. As a Senior team member, you will also mentor engineers, contribute to the engineering strategy, and help define and implement best practices.

Main Duties

Leadership

• Act as a technical lead within your squad, setting high standards for engineering practices and infrastructure resilience.
• Provide mentoring and guidance to junior and mid-level engineers.
• Help shape and implement the long-term engineering technical strategy for reliability and scalability.

Implementation & Delivery

• Design and implement scalable and modular frontend solutions using micro frontend architecture and module federation.
• Develop applications using React, TypeScript, and NestJS, supporting robust client-server integration.
• Contribute to and lead the detailed design, engineering quality, and technical oversight of solutions delivered within the Value Stream.
• Ensure all technical solutions follow architecture governance and align with Admiral’s engineering strategy.
• Drive improvements to CI/CD pipelines, automation, testing practices, and secure delivery.
• Contribute to resolving technical constraints, blockers, and integration challenges.
• Identify and address technical debt, ensuring sustainability and maintainability.
• Oversee vulnerability management by promoting secure development practices and robust solution design.
• Identify and implement continuous improvements to delivery and engineering processes.

Collaboration & Communication

• Facilitate clear communication across squads and roles to ensure alignment and knowledge transfer.
• Promote engineering values such as transparency, quality, openness, and productivity.
• Collaborate with engineers across squads, architecture, security, and platform teams together with product owners to support shared goals.
• Contribute to communities of practice, Chapter and Guild forums, and internal initiatives.
• Participate in Agile ceremonies, ensuring engineering considerations are included in backlog prioritisation and sprint planning.

Experience Required

Technical Expertise

• Proven experience in a Senior Software Engineer role, ideally within web and mobile application development.
• Experience designing and operating micro frontend (MFE) architectures, including module federation and independently deployed pipelines.
• Expertise in React and TypeScript development, including component architecture, state management, and performance optimisation.
• Extensive experience with NestJS for backend-for-frontend (BFF) patterns and API gateway design.
• Skilled in building and maintaining CI/CD pipelines using tools such as Azure DevOps or GitHub Actions, and familiar with optimised deployment strategies.
• In-depth knowledge of testing frameworks and strategies across unit, integration, E2E, and non-functional domains.
• Experience with cloud-native environments - preferably GCP and Azure.
• Skilled in application performance optimisation techniques such as caching, code splitting, lazy loading, and real-user monitoring.
• A good understanding of web and mobile security best practices, including OWASP guidelines, secure authentication and authorisation.
• Desirable: Familiarity with authentication/authorisation protocols such as OAuth2, OpenID Connect, and SAML.
• Desirable: Experience with containerisation and infrastructure tools such as Docker, Kubernetes, Helm, and Terraform.
• Desirable: Familiarity with mobile frameworks such as Ionic Capacitor.

Behavioural Competencies

• Strategic Thinking: Understands how technical decisions support broader business and platform goals.
• Leadership & Mentorship: Actively mentors engineers, shares knowledge, and supports the development of others.
• Collaboration: Works effectively across multiple squads, stakeholders, and functions.
• Accountability: Owns engineering outcomes, promotes high standards, and ensures follow-through on technical commitments.
• Adaptability: Responds constructively to changing priorities and evolving technology landscapes.
• Problem Solving: Decomposes complex problems and drives practical, sustainable solutions.
• Communication: Explains technical topics clearly to varied audiences and facilitates effective alignment.
• Continuous Improvement: Seeks and drives opportunities to modernise practices, reduce friction, and improve delivery flow.
• Security & Resilience Mindset: Promotes secure design and robust, scalable architecture.
• Knowledge Sharing: Encourages documentation and collaboration to eliminate single points of failure and strengthen team resilience.

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; You can view some of our other key benefits here.

Disability Confident Leader

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. Please do email us or contact us on 07386666328. This number is dedicated to supporting candidates that require reasonable adjustments or support during the application process.

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