Senior Business Analyst

As a Senior Business Analyst, you will play a critical role in supporting Thames Water’s ambition to deliver a new world of water. You will work at the heart of our digital transformation, leveraging data, technology, and robust business analysis practices to drive meaningful outcomes for our customers, communities, and the environment.

You will bring extensive experience of working on complex business problems and transformation projects, ensuring that initiatives align with business needs, digital strategy, and desired outcomes. Through strong stakeholder engagement, methodological expertise, and a customer-focused mindset, you will help deliver change that creates real value across the organisation.

This role requires an experienced, confident Business Analyst who can operate independently, influence at all levels, and apply the right tools and techniques to maximise project success.

What you’ll be doing as a Senior Business Analyst

Engage effectively with stakeholders at all levels, up to Head of Department, to build trusted relationships and ensure alignment between business needs, digital strategy, and project outcomes.
Work collaboratively with project teams, portfolio leads, product owners, architects, and service delivery teams to drive value-focused outcomes.
Lead Business Analysts on projects where more than one BA is assigned, supporting quality and consistency of delivery.
Apply a wide range of Business Analysis techniques to analyse current services and processes against problem statements, needs, and desired outcomes.
Elicit, analyse, and document functional and non-functional requirements using appropriate tools and techniques.
Produce clear As-Is and To-Be process maps, identifying opportunities to optimise and improve business processes.
Proactively question and challenge assumptions, always placing the customer at the centre of decision-making.
Support teams to define outcomes, prioritise work, agree scope, and work towards a minimum viable product (MVP).
Apply Agile and Waterfall methodologies appropriately across the project lifecycle, maintaining an agile mindset in all aspects of work.
Drive prioritisation of requirements with Product Owners and Project Managers to maximise value and minimise cost.
Author and contribute to high-quality documentation in line with the Business
Analysis service offering, securing appropriate stakeholder approval.
Ensure documentation and deliverables are complete, accurate, and fit for purpose to enable successful delivery with minimal defects.
Support the Lead Business Analyst in driving quality standards and best practice across the BA community.
Present complex business and technical concepts clearly and succinctly to both technical and non-technical audiences.
Work with the Lead BA to support continuous improvement, knowledge sharing, and the adoption of agile principles across Thames Water.
Base location – Hybrid – Clearwater Court, Reading.

Working pattern – 36 hours Monday to Friday.

What you should bring to the role

Experience working as a Business Analyst in a digital project environment.
Extensive experience applying Agile and Waterfall delivery methodologies and associated tools (e.g. Azure DevOps).
Proven ability to work on complex projects with multiple delivery partners and stakeholders, including large-scale platform or transformation initiatives.
Strong communication skills with the ability to engage and influence stakeholders at all levels of the organisation.
Confidence working independently, using sound judgement and experience to drive outcomes.
BCS (or equivalent) Business Analysis Diploma.
Strong analytical, problem-solving, and organisational skills.
What’s in it for you?

Competitive salary between £60,000 and £70,000 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 company 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.
Find out more about our benefits and perks

Who are we?

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. It’s a big job and we’ve got a long way to go, so we need help from passionate and skilled people, committed to making a difference and getting us to where we want to be in the years and decades to come.

Learn more about our purpose and values

Working at Thames Water

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.

If you’re looking for a sustainable and successful career where you can make a daily difference to millions of people’s lives while helping to protect the world of water for future generations, we’ll be here to support you every step of the way. Together, we can build a better future for our customers, our region, and our planet.

Real purpose, real support, real opportunities. Come and join the Thames Water family. Why choose us? Learn more.

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.

When a crisis happens, we all rally around to support our customers. As part of Team Thames, you’ll have the opportunity to sign up to support our customers on the frontline as an ambassador. Full training will be given for what is undoubtedly an incredibly rewarding experience. It’s also a great opportunity to learn more about our business and meet colleagues.

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