Software Engineering Specialist - Back End

Recruiter: Luke Byrne

Career Grade: CLD

Internal Closing Date: 26th July 2026

Locations: London or Ipswich

About the role

As networks grow in complexity and the demand for speed, resilience, and efficiency increases, our need to intelligently leverage software engineering becomes critical. This role sits at the heart of that transformation. You’ll be enabling a real shift in how telcos operate and serve customers in designing and developing software solutions that streamline workflows, embed compliance, and eliminate inefficiencies. Your work will directly impact how quickly and reliably services are delivered that benefit customers, how easily teams can operate and troubleshoot systems, and how effectively the business can adapt to new technologies and opportunities. This isn’t just about writing code or developing software solutions, it’s about shaping the future of operational excellence in the Software, Data and AI team in Mobile.

What you’ll be doing

• Delivers the engineering strategy in ensuring the engineering organisation’s ability to deliver high quality on time and on budget and implementing means of bringing measurability as well as predictability to the engineering organisation’s capabilities
• Executes complex technical decisions, technology choices and architecture for a wide range of high-performance products, capabilities, and platforms, effectively balancing short-term impact with long-term transformation
• Resolves complex and strategic issues using advanced technical knowledge, across wider industry and/or specific sectors, and develops bespoke or leading edge, technically complex solutions (e.g., relating to new, un-tested technology and/or large-scale impact of products)
• Executes and contributes to the development of the ambitious and compelling technical roadmap to meet the needs of the business, engineering team, and partner teams
• Executes engineering and operational excellence initiatives, implementing metrics and process for regular assessment and improvement
• Drives an engineering culture that fosters innovation and creativity while delivering high quality products with predictability and reliability
• Writes, tests and reviews code, refining and rewriting as necessary independently and communicates to engineering professionals and colleagues involved in the project
• Solves complex and escalated aspects of a project, performing coding, debugging, testing and troubleshooting when necessary
• Plays a positive contributor role in the software engineering organisation, implementing the technical vision and the pursuit of innovations regarding new technologies, platforms and applications.
• Evaluates, implements and maintains high-quality tools and complex automation processes to support continuous delivery and developer productivity

Essential Skills / Experience

• Strong proficiency in programming languages such as Python, Java, C# with demonstrated experience in building robust systems or applications.
• Extensive background in software architecture and solution design, with deep expertise in microservices, distributed systems, and cloud-native architectures.
• Deep understanding of software development principles, including design patterns, modular architecture test-driven development (TDD), and version control (e.g. Git).
• Comfortable with Spec-Driven-Development (SDD) and other AI supported software practices.
• Experience integrating with APIs, network systems, or telemetry platforms, ideally in telecoms or other operational environments.
• Proven ability to design and specify software solutions based on technical requirements. This covers microservice architecture, and larger scale component and solution design.
• Proactive and self-directed, comfortable in turning strategic and team goals into individual work-packages to deliver objectives while also contributing in cross-functional teams.
• Hands-on experience with automation frameworks and tools, including CI/CD pipelines (e.g. GitLab-CI, Jenkins, Infrastructure-as-code (e.g. Ansible, Jinja2, Terraform), and scripting.
• Proficient in virtualisation and orchestration tools (e.g. Docker, OpenStack, VMWare)
• Familiarity with observability and monitoring practices.
• Strong problem-solving skills with the ability to work through complex, cross-domain technical challenges
• Effective communicator, able to work with design, operational, and vendor/customer teams to understand needs and deliver value.
• Adaptable with change, especially in a fast-paced environment with evolving priorities or technical directions.
• Strong documentation and knowledge sharing habits, supporting sustainable and maintainable development and skills sharing.

Experience you’d be expected to have
• A bachelor’s degree in computer science, information technology, or any relevant field.
• Strong knowledge of cloud concepts, architecture patterns, and best practices.
• Proven experience in designing, implementing, and maintaining Software solutions.
• Hands-on experience with any cloud, AWS is preferred.
• Advanced proficiency in Python and Apache Spark, with a strong focus on ETL data processing and scalable data engineering workflows.

Our Package

• 10% on target bonus
• A BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%
• From January 2025, equal family leave: receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It’s for all parents, no matter how your family is made up.
• 25 days annual leave (not including bank holidays), increasing with service
• Huge range of flexible benefits including cycle to work, healthcare, season ticket loan
• World-class training and development opportunities
• Option to join BT Shares Saving schemes.
• Discounted broadband, mobile and TV packages
• Access to 100’s of retail discounts including the BT shop

BT Group is the UK’s leading communications group and the holding company behind some of the country’s most recognised brands – including BT, EE, Openreach and Plusnet. Our purpose is as simple as it is ambitious: we connect for good. Our customers include consumers, small, medium and large businesses, public sector organisations and other communications providers.

BT Group’s role is about setting direction, unlocking value and creating the conditions for our brands and businesses to thrive.

Having come through the most capital-intensive phase of our fibre investment, our focus now is on what comes next – simplifying how we operate, using technology and AI to work smarter, and organising ourselves to serve customers better and grow sustainably. Group teams shape strategy, policy, brand, capital allocation and transformation, helping the whole organisation perform at its best.

We have a singular culture that unites all our people: we are customer-first challengers, who are committed, clear and connected. These behaviours unite us as one team to deliver for our colleagues, our customers, our stakeholders and the country. Joining BT Group means working at the heart of a business that matters to the UK, with the opportunity to shape decisions, influence outcomes and help set the future course of one of the country’s most important companies.