Data Science Specialist

Recruiter: Krystle James

Career Grade: D

Internal Closing Date: 19/02/26

Due to the sensitive nature of this role, you will be required to undergo DV (Developed Vetting) level Security Clearance ( ). An allowance of £5k per annum may be payable monthly while you hold this DV and continue to work in a role that requires that level of security clearance. The terms of this allowance will be made available if you are successful in being recruited into this role.

Security isn't always the first thing that comes to mind when you think of BT, but when it comes to keeping everyone safely connected, We Are The Protectors. We deal with thousands of cyber‑attacks every day, so that millions of people can safely go about their daily lives and run their businesses. We deliver vital work at scale, with real breadth and impact.

We connect for good.

You'll be joining a specialist security team that is a trusted partner to governments worldwide, protecting critical national infrastructure and committed to the safety and security of our nation and global communities. Our mission focused work is innovative, inspiring and technologically challenging in a way that makes every day different and stimulating. We provide the opportunity to work on rare projects, with exciting tools and brilliant people.

Everyone has access to unparalleled professional and personal development opportunities and your contribution is always valued.

This role sits within BT's Security Division and is responsible for maturing the data science capability, acting as a leader for how we exploit the value in our data.

The successful candidate will play a key part in building internal expertise and delivering innovative solutions to meet both internal and customer requirements. The role holder will lead and develop an agile team of data scientists across multiple projects. In addition to technical delivery, the role has a strategic dimension – identifying high-impact opportunities and engaging across the wider organisation.

This job role can be based in Manchester, Ipswich, Cheltenham. Onsite (Office based 5 days per week). Monday-Friday 37.5 hours per week. You will need to be eligible to obtain DV Security Clearance before starting this role. You will need to have lived in the UK for 10+ years to be eligible.

• Supports the exploitation of data on critical customer platforms.
• Mentors other Data Science & AI professionals, helping to improve the team's abilities by acting as a technical resource.
• Coordinates the development and implementation of custom data models, intelligent algorithms, and AI solutions to apply to data sets.
• Pursues new opportunities to utilise data science/machine learning for improved outcomes.
• Champions, continuously develops and shares with the team knowledge on emerging trends and changes in machine learning and artificial intelligence.

• Data Analysis
• Programming
• Scripting
• Artificial Intelligence/Machine Learning
• Statistical Analysis

• Programming/Scripting: Strong skills with compiled and interpreted languages such as Python and Scala.
• Data Analysis: Understanding of graphs, networks, time‑series modelling, numerical algorithms and geospatial analytics.
• Machine Learning: Understanding of machine learning techniques and frameworks such as scikit‑learn, Tensor Flow, PyTorch, etc.
• Dev Ops: Basic devops and system level Linux skills – confident with SSH and shell scripting, cron, package management. Familiar with version control and a mix of development environments.
• Software Development: Highly experienced with compiled and interpreted languages such as Python and Scala/Java, confident with common libraries like Pandas, Num Py.
• Cyber Analytics: Understanding and detecting threats in network data.

• Competitive salary
• 10% on target bonus (depending on country based)
• BT Pension scheme, minimum 5% employee contribution, BT contribution 10%
• On‑call allowance (depending on the requirements of the role)
• 25 days annual leave (not including bank holidays), increasing with service
• Huge range of flexible benefits including cycle‑to‑work, healthcare, season ticket loan
• W…