At Affinity Water, we’re looking for a highly skilled Application Specialist to join our Retail team as a Subject Matter Expert (SME) in our billing application and CRM systems.
This is an exciting opportunity for someone who thrives on solving complex problems, improving critical business systems, and making a tangible difference in customer experience. You’ll play a key role in ensuring the smooth operation, integration, and evolution of our billing and customer platforms – particularly HiAffinity – as well as shaping how we manage data, automation, and system upgrades.
About Us
Affinity Water is the UKs largest water-only supplier, providing sustainable, high-quality water to 3.85million customers across the Southeast of England. We are on a mission to redefine the way water companies connect with their customers and communities, and to make better use of water and safeguard the local environment now and in the future.

• Act as the go-to expert for our HiAffinity billing system and CRM, advising on best practices, enhancements, and system risks.
• Lead on the design, implementation, testing, and ongoing improvement of key operational systems.
• Collaborate closely with Technology, Transformation, Customer Experience, Finance, and Operations teams to ensure alignment with business goals.
• Support upgrades, vendor management, and regulatory compliance, including GDPR.
• Investigate and resolve complex technical issues, ensuring minimal service disruption.
• Maintain and monitor overnight batch processes and key operational reports using tools like Talend, Skybot, SOA, and Progress.
• Take ownership of environment refreshes, code deployments, and configuration changes across multiple system instances.
• Contribute to technical documentation, training, and change advisory board (CAB) processes.