Data Scientist

Affinity Water; Hatfield; On-site; GBP 55,000 - 64,000; Full time

Job summary

Affinity Water is seeking a Data Scientist to join the Business Performance & Insights team. In this role, you will leverage your expertise to develop advanced analytics and machine learning models that drive business strategy and service performance. The position calls for a strategic partner who can solve complex problems and innovate within the company. Candidates should hold a related degree and have extensive experience in data science, with skills in Python, R, SQL, and various machine learning frameworks.

Benefits

Hybrid working

26 days annual leave plus bank holidays

Generous pension scheme

Enhanced Maternity, Adoption and Shared Parental Leave

Company bonus scheme

Access to Wellbeing Centre

Qualifications

• 5+ years’ experience in data science, delivering end-to-end projects.
• Experience with APIs and cloud platforms, especially AWS.
• Collaborative, curious mindset with excellent communication skills.

Responsibilities

• Design and develop advanced analytics and machine learning models to solve real-world business challenges.
• Work across departments to identify opportunities where data science can deliver measurable value.
• Create powerful visualisations and present findings to stakeholders.
• Build, deploy, and maintain robust data pipelines and production-grade models (MLOps).
• Champion ethical data practices, governance, and high-quality documentation.
• Stay up to date with AI and data science innovations.

Skills

Python

R

SQL

TensorFlow

PyTorch

Scikit-learn

Data storytelling

Problem-solving

Education

Degree in Data Science, Computer Science, Mathematics, or related field

Tools

AWS

Job description

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As a Data Scientist, you’ll join our dynamic Business Performance & Insights team, working alongside talented data analysts, engineers, and subject matter experts. You’ll deliver high-impact machine learning models and analytics solutions that directly influence business strategy and service performance.

This is more than a technical role—you’ll be a strategic partner, using your expertise to uncover insights, solve complex problems, and drive innovation across all areas of our business.

About us

AffinityWater is the UKs largest water-only supplier, providing sustainable, high-quality water to 3.85 million 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.

We’re on a journey to become a truly data-driven organisation. With data at the heart of how we serve our customers and drive performance, we are building a culture of innovation and insight-led decision-making across the business.

Key Responsibilities

1. Design and develop advanced analytics and machine learning models to solve real-world business challenges.
2. Work across departments to identify opportunities where data science can deliver measurable value.
3. Create powerful visualisations and present findings to technical and non-technical stakeholders.
4. Build, deploy, and maintain robust data pipelines and production-grade models (MLOps).
5. Champion ethical data practices, governance, and high-quality documentation.
6. Stay up to date with AI and data science innovations, bringing cutting-edge thinking into the business.

As a Data Scientist, you’ll join our dynamic Business Performance & Insights team, working alongside talented data analysts, engineers, and subject matter experts. You’ll deliver high-impact machine learning models and analytics solutions that directly influence business strategy and service performance.

This is more than a technical role—you’ll be a strategic partner, using your expertise to uncover insights, solve complex problems, and drive innovation across all areas of our business.

About us

AffinityWater is the UKs largest water-only supplier, providing sustainable, high-quality water to 3.85 million 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.

We’re on a journey to become a truly data-driven organisation. With data at the heart of how we serve our customers and drive performance, we are building a culture of innovation and insight-led decision-making across the business.

Key Responsibilities

1. Design and develop advanced analytics and machine learning models to solve real-world business challenges.
2. Work across departments to identify opportunities where data science can deliver measurable value.
3. Create powerful visualisations and present findings to technical and non-technical stakeholders.
4. Build, deploy, and maintain robust data pipelines and production-grade models (MLOps).
5. Champion ethical data practices, governance, and high-quality documentation.
6. Stay up to date with AI and data science innovations, bringing cutting-edge thinking into the business.

Experience required

1. A degree in Data Science, Computer Science, Mathematics, or a related field.
2. 5+ years’ experience in data science, with proven success delivering end-to-end projects.
3. Proficiency in Python, R, SQL, and machine learning frameworks (e.g., TensorFlow, PyTorch, Scikit-learn).
4. Strong skills in data storytelling, problem-solving, and working with both structured and unstructured data.
5. Experience with APIs, cloud platforms (especially AWS), and MLOps practices is a strong advantage.
6. A collaborative, curious mindset with excellent communication skills and a passion for innovation.

Benefits include:

• Salary £55,000 dependant on experience
• Hybrid working, two days per week expected in the office in Hatfield
• Annual leave 26 days, plus a celebration day, plus bank holidays, rising with length of service
• A generous pension scheme that doubles the contributions you make, up to a maximum of 12%
• We offer enhanced Maternity, Adoption and Shared Parental Leave. We also have a Carers policy and Menopause policy to help us support our people through different stages of their lives.
• Company bonus scheme
• Access to our Wellbeing Centre with support for looking after your physical and mental health
• Join a diverse and inclusive team where your ideas are valued. Collaborate with experts across various domains to deliver impactful solutions.

You can find out what it’s like to work at Affinity Water through our career site where our colleagues share their career development stories and you can get a feel for our company culture.

Affinity Water recognises the benefits of greater diversity in our workforce to better reflect the communities we serve. We are committed to building a more inclusive culture where every member of our workforce can thrive.

How to Apply: If you are passionate about data science and eager to contribute to a data-driven future at Affinity Water, we encourage you to apply. Please submit your CV and a cover letter detailing your relevant experience and why you would be a great fit for this role.