Software Engineer

BT Group; Belfast City District; On-site; GBP 50,000 - 65,000; Full time

Benefits offered by this job

10% on target annual bonus

Private GP 24/7

Pension scheme 5%/10%

Holiday purchase scheme

BT product discounts

Job summary

BT Group in Belfast is seeking a Software Engineer to help evolve our consumer billing platforms. You will focus on building and enhancing backend services and microservices, delivering high‑quality code and reliable changes within an agile engineering team.

You will gain hands‑on experience with Java/SpringBoot, AWS, EKS, and OracleDB, learning modern engineering practices such as API‑first design, automated testing, CI/CD, monitoring, and incident management as part of a collaborative,

Qualifications

• Experience developing backend services in Java/Spring Boot.
• Understanding of microservices and REST APIs.
• Experience delivering software in a team with CI/CD.

Responsibilities

• Develop and enhance backend services and microservices for billing journeys.
• Support build, test, deployment and releases per engineering standards.
• Collaborate with cross‑functional teams on design reviews and improvements.

Skills

Java & Spring Boot

Microservices

API Development

Software Delivery

Education

Computer Science Degree

Tools

AWS

EKS

Oracle Database

Job description

Job Description

Job Title: Software Engineer

Req ID: 61975

Job Function: Software Engineering

Posting Start Date: 07/09/2026

Posting End Date: 16/09/2026

Division: Digital

Job Location: GBR Belfast - Riverside Tower

Advertised Salary: Competitive

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About the role

The Software Engineer plays an important role in supporting the development and evolution of BT’s consumer billing platforms. This role is focused on building and enhancing backend services and microservices, contributing to the delivery of new technology that improves platform capability, reliability, and customer outcomes. Working as part of a co-located FTE engineering team, the role provides the opportunity to develop strong hands‑on experience in Java/SpringBoot, AWS, EKS, and OracleDB, while learning modern engineering practices across cloud‑native development and enterprise billing systems. By contributing high‑quality code, supporting continuous improvement, and helping deliver resilient billing solutions, this role is key to enabling a more flexible and future‑ready consumer billing estate.

What you’ll be doing

Software Development & Delivery

• Develop and enhance backend services and microservices that support consumer billing journeys, integrations, and platform improvements.
• Contribute to the delivery of new technology by writing, testing, and maintaining high-quality code within agreed engineering standards and delivery plans.
• Support build, test, deployment, and release activities to help deliver safe and reliable change across billing services.

Application Design & Engineering Practice

• Apply established engineering patterns and guidance to build Java/SpringBoot services, APIs, and integrations that are secure, supportable, and scalable.
• Contribute to solution design discussions, code reviews, and technical refinement activities as part of a wider engineering team.
• Learn and apply modern engineering practices such as microservices design, API-first development, version control, and automated testing.

Cloud Platform & Operational Support

• Support the deployment and operation of billing services in AWS and EKS, following established standards for logging, monitoring, and resilience.
• Assist with troubleshooting incidents, resolving defects, and improving service reliability in production and non-production environments.
• Contribute to CI/CD improvement, deployment automation, and operational best practice through continuous learning and hands‑on support.

Data & Billing Platform Support

• Develop and maintain application components that interact with OracleDB, following agreed patterns for data access, integrity, and performance.
• Support billing platform integrations and help maintain reliable dependencies across OracleDB and the NetCrackerRBM instance.
• Work with teammates and dependent systems to help maintain billing flows, reconciliations, and service continuity.

Collaboration & Growth

• Work closely with engineers, Product, QA, Architecture, Operations, and other teams to support delivery of billing solutions.
• Take feedback positively and use mentoring, code reviews, and day‑to‑day collaboration to grow technical capability and confidence.
• Contribute to a customer‑focused, delivery‑driven, and one‑team culture by being committed, clear, and connected in how you work.

Essential Skills / Experience

• Java & Spring Boot Development: Experience developing, testing, and supporting backend services and APIs using Java and Spring Boot.
• Microservices & API Development: Understanding of microservices architecture, REST APIs, integration patterns, and modern software engineering practices.
• Software Delivery & Problem Solving: Experience contributing to software delivery through coding, debugging, testing, release support, and defect resolution within an engineering team.

Desirable Skills / Experience

• AWS & EKS (Kubernetes) cloud platform experience.
• Oracle Database knowledge, including SQL, data access, and performance considerations.
• CI/CD & Deployment Automation experience.
• Enterprise Billing Platform experience.
• NetCracker RBM exposure or knowledge.
• Production Support & Incident Management experience.
• AI Technologies in Software Engineering (e.g., AI-assisted development tools).
• Computer Science Degree or equivalent technical qualification.

Our Package

Tailored benefits make a real difference. That’s why we offer a comprehensive range to support your growth, wellbeing, and everyday life.You can design the package to suit you and your lifestyle. Your core benefits include:

• 10% on target annual bonus
• Access to an online private GP 24/7 for you and your immediate family
• Market‑leading paid carers leave with up to 2 weeks off
• Equalized maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay
• Discounted EE and BT products, including mobile and broadband
• Market leading Pension scheme – 5% from you and 10% from us
• Holiday purchase scheme

You can select additional benefits, including healthcare, dental, gym memberships and more when you’re ready.

Join us at a pivotal moment for BT Business. We are executing a multi-year transformation to restore growth, modernise at scale and unlock new markets beyond connectivity. Our ambition is clear – return to sustainable revenue and EBITDA growth, strengthen our market position, and deliver meaningful shareholder value through disciplined execution and bold reinvention.

We are fundamentally reshaping the business – simplifying our portfolio, digitising our customer experience and building market‑leading capability across cyber, AI and managed services, all powered by the UK’s leading fixed and mobile networks. This is a shift from a legacy connectivity provider to a modern, solutions‑led, AI‑first business that can truly differentiate in a competitive and fast‑moving market.

With execution momentum building and a clear path to growth, the opportunity now is to scale what works, accelerate performance and fully realise our potential. This is about delivering against ambitious financial outcomes while transforming how we operate – creating a business that is simpler, faster, more innovative and easier to do business with.

If you want to be part of the team shaping the turnaround of a multi‑billion‑pound business – and building a stronger, more competitive BT for the future – this is your moment.