Full Stack Developer

Job title: Full Stack Developer Ref 42802 Division Digital Location Hybrid - Clearwater Court - RG1 8DB Contract type Permanent Full/Part-time Full-time Salary Competitive salary up to £80,000 per annum depending on experience Job grade B

We are looking for a highly motivated and technically skilled Full Stack Developer to join our Customer Technology & Platforms team. In this role, you will design, develop, and support high-quality software solutions that enhance the digital experience for millions of Thames Water customers.

You'll play a critical role in building modern microservices and APIs, using cutting-edge technologies to drive the evolution of our customer-facing website and backend systems. Working in a highly collaborative agile team, you'll help deliver scalable and secure solutions that make a real impact.

This is an exciting opportunity to work with cloud-native tools (especially Azure, Docker, and Kubernetes), transforming how customers interact with Thames Water every day.

Software Development & Delivery:

• Design and develop high-quality code to support digital products across web and backend systems.
• Build scalable APIs and microservices to support seamless customer interactions.
• Write secure, well-tested, and maintainable code using .NET Core and related technologies.
• Implement containerised solutions with Docker and orchestrate deployments using Kubernetes.
• Participate in agile ceremonies including sprint planning, retrospectives, daily stand-ups, and pair programming.
• Apply agile technical practices such as Test-Driven Development (TDD), CI/CD, and continuous testing.
• Collaborate with developers, product owners, and designers to deliver working software every sprint.
• Break down complex requirements into smaller, shippable units of value.
• Contribute to the development of reusable components and shared libraries to improve team efficiency.
• Identify areas for technical improvement and recommend innovative solutions to increase performance and reliability.
• Maintain and enhance existing codebases with a focus on long-term support and evolution.
• Contribute to knowledge sharing, team mentoring, and continuous learning.

Security, Compliance & Monitoring:

• Ensure applications comply with industry standards and internal security guidelines.
• Leverage cloud-native monitoring tools to ensure high availability and system health.
• Build secure APIs and services that meet data protection and compliance requirements.

Working pattern - 36 hours, Monday to Friday

What you should bring to the role:

The essential criteria to help you succeed in this role is:

• Experience as a Full Stack Developer, ideally in customer-facing website projects.
• Demonstrated success in delivering production-ready microservices and APIs.
• Experience in containerised application development and orchestration (Docker, Kubernetes).
• Strong understanding of Agile software delivery practices and DevOps principles.
• Excellent problem-solving and collaboration skills in a fast-paced team environment.

Essential Technical Skills & Qualifications:

• Agile tools and practices (Scrum, TDD, CI/CD, Azure DevOps)

Additional skills and experiences would be great to have/bring:

• Experience working with website content management solutions.
• Exposure to designing integration solutions across cloud and on-prem environments.
• Previous work in regulated industries or large customer bases.

Desirable Technical Skills & Qualifications:

• Familiarity with automated testing tools and software quality frameworks.
• Experience building and maintaining reusable UI components.
• Understanding of secure coding practices and API security.
• Experience writing technical documentation and contributing to shared knowledge bases.

What's in it for you?

• Competitive salary up to £80,000 per annum, depending on experience.
• Annual Leave - 26 days holiday per year, increasing to 30 with the length of service. (plus bank holidays).
• Generous Pension Scheme through AON.
• Performance-related pay plan directly linked to both company and individual performance measures and targets.
• Access to lots of benefits to help you take care of you and your family's health and wellbeing, and your finances - from annual health MOTs and access to physiotherapy and counselling to Cycle to Work schemes, shopping vouchers and life assurance.

We're the UK's largest water and wastewater company, with more than 16 million customers relying on us every day to supply water for their taps and toilets. We want to build a better future for all, helping our customers, communities, people, and the planet to thrive.

Thames Water is a unique, rewarding, and diverse place to work, where every day you can make a difference, yet no day is the same. As part of our family, you'll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits.

We're committed to being a great, diverse, and inclusive place to work. We welcome applications from everyone and want to ensure you feel supported throughout the recruitment process. If you need any adjustments, whether that's extra time, accessible formats, or anything else just let us know, we're here to help and support.

Disclaimer: due to the high volume of applications we receive, we may close the advert earlier than the advertised date, so we encourage you to apply as soon as possible to avoid disappointment.