BT Group
Software Engineering Specialist
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Software Engineering Specialist
Software Engineering Specialist
Req ID: 59489 Job Function: Software Engineering Posting Start Date: 02/07/2026 Posting End Date: 05/07/2026 Division: Networks Job Location: GBR-Manchester-New Bailey Advertised Salary: Competitive + Benefits
About BT Group
BT Group is the UK’s leading communications group, with a purpose of connecting for good. Supporting customers, businesses, and public sector organisations, BT Group’s operations include BT, EE, Openreach, and Plusnet. This role is part of a transformation effort to modernise Core Voice Network platforms, migrating legacy telephony systems to cloud-native, microservices-based architectures while enabling next-generation Voice AI capabilities.
The team resides in New Bailey, Manchester, UK, with a hybrid work model of 3 days on-site, 2 days remote.
About The Role
The Software Engineering Specialist will join a Software Engineering Development team focused on designing, developing, and evolving distributed applications underpinning call services and routing across BT’s fixed voice estate.
Key Duties Include:
- Design, develop, and maintain scalable microservices-based applications using Java, Spring Boot, and containerisation tools (Kubernetes, Podman, Docker)
- Define and implement RESTful APIs compliant with OpenAPI (Swagger) standards
- Lead by example in development while conducting code reviews and mentoring team engineers to ensure high-standard delivery
- Adopt an AI-first engineering approach, leveraging AI tools and Voice AI capabilities for smarter call handling and system performance
- Collaborate cross-functionally with architects, product teams, and engineering colleagues to solve high-impact technical challenges
- Involve in system design and architecture, ensuring scalability, resilience, and real-time performance for high-throughput platforms
- Diagnose and resolve complex technical bugs, performing coding, and debugging across application stacks
- Conduct root-cause analysis to optimise performance and reduce technical debt through iterative improvements
- Contribute to technical strategic roadmaps, aligning engineering deliverables with business innovation goals
- Champion best practices, including Agile, AI-driven approaches, and cutting-edge development methodologies
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Optional (Desirable): Exposure to Core Voice platforms (e.g., OCCAS), including:
- Telecom protocols such as SIP signaling, RTP media flows
- Traffic simulation via SIPP
- Troubleshooting tools like Wireshark
Requirements
Essential Skills & Experience
- Proficient in Java development with significant experience in Spring Boot
- Expertise in designing production-ready RESTful APIs following OpenAPI (Swagger) standards
- Strong knowledge of microservices architecture, distributed systems design, and scalable database models (e.g., MySQL, Timesten)
- Hands-on experience with Docker and Kubernetes, alongside comfort in Linux environments (including basic Bash scripting)
- Familiarity with core concepts of AI development in software engineering contexts
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Desirable Skills & Experience
- Expertise in Git and CI/CD pipelines
- Awareness of service discovery (Consul) and monitoring tools (Prometheus)
- Experience with Container-as-a-Service (CaaS) platforms, including cloud environments (AWS, Azure, OpenStack)
- Formal qualification and Agile methodologies (e.g., Scrum/Jira), individual accountability in cross-team design decisions
- Background in telecommunications or voice systems technology
Benefits & Package
BT Group offers tailored benefits to support growth, wellbeing, and personal needs. Choose what suits your lifestyle!
Core Benefits
- 10% on-target annual bonus
- 24/7 private GP access for employees and immediate families
- Paid carers leave (up to 2 weeks)
- Equalised parental/maternity/paternity/adoption leave – up to 18 weeks at full pay, 8 weeks at half pay
- Discounted BT/EE products (mobile, broadband, and more)
- Market-leading Pension Scheme (5% employee contribution, matched with 10% employer contribution)
- Holiday purchase scheme
Optional Add-Ons
- Healthcare plans
- Dental coverage
- Gym memberships
- Additional life benefits
Ready to Shape the Future?
Apply now to BT Group and be part of a team working at the heart of communication innovation. Your impact matters for connected, sustainable progress across the UK. 🚀
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