Job Title: Data Science Specialist
Req ID: 55744
Job Function: Security
Posting Start Date: 27/05/2026
Posting End Date: 24/06/2026
Division: UK Business
Job Location: GBR Chelmsford TE
Advertised Salary: Competitive Salary + Benefits
Recruiter: Krystle James
Career Grade: D
Internal Closing Date: 24/06/26
Security Clearance
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.
About the Role
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.
The role can be based in Manchester, Ipswich, Cheltenham. It is onsite (office based, 5 days per week). Working hours are 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.
Responsibilities
* Support the exploitation of data on critical customer platforms.
* Mentor other Data Science & AI professionals, helping to improve the team’s abilities by acting as a technical resource.
* Coordinate the development and implementation of custom data models, intelligent algorithms, and AI solutions to apply to data sets.
* Pursue new opportunities to utilise data science/machine learning for improved outcomes.
* Champion, continuously develop and share knowledge on emerging trends and changes in machine learning and artificial intelligence with the team.
Essential Skills
* Data Analysis
* Programming
* Scripting
* Artificial Intelligence/Machine Learning
* Statistical Analysis
Desirable Experience
* Programming/Scripting: Strong skills with compiled and interpreted languages such as Python and Scala.
* Data Analysis: Understanding of graphs, networks, time-series modeling, numerical algorithms and geospatial analytics.
* Machine Learning: Understanding of machine learning techniques and frameworks such as scikit-learn, TensorFlow, PyTorch, etc.
* DevOps: 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, NumPy.
* Cyber Analytics: Understanding and detecting threats in networks data.
Benefits
* 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
* Flexible benefits including cycle to work, healthcare, season ticket loan
* World-class training and development opportunities
* From January 2025, equal family leave: 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate for all parents.
* Enhanced women's health support: menopause symptoms, cancer screenings, period care and more.
* 24/7 private virtual GP appointments for UK colleagues
* 2 weeks paid carer’s leave
* Option to join BT Shares Saving schemes.
* Discounted broadband, mobile and TV packages
* Access to 100s of retail discounts including the BT shop
Equal Opportunities
Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We’re committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you’re excited about this role but your past experience doesn’t align perfectly with every requirement, please apply anyway. You may be the right candidate for this or other roles in our wider team.
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