Backend Java Engineer: AWS, Microservices & Billing Platform

BT Group

Belfast City District

On-site

GBP 36,000 - 67,000

Full time

4 days ago

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Benefits offered by this job

10% annual bonus

Job summary

BT Group is hiring for a backend engineer to develop and enhance billing services and microservices across our consumer billing journeys and platform improvements. You’ll contribute by writing and testing high-quality Java/Spring Boot code within established engineering standards and delivery plans.

The role emphasizes secure, scalable services, API-first development, and close collaboration with product, QA, architecture, and operations.

Qualifications

Experience developing, testing, and supporting backend services and APIs using Java and Spring Boot.
Understanding of microservices architecture, REST APIs, integration patterns, and modern software engineering practices.
Experience contributing to software delivery through coding, debugging, testing, release support, and defect resolution within an engineering team.
AWS and EKS (Kubernetes) cloud platform experience.
Oracle Database knowledge, including SQL, data access, and performance considerations.
CI/CD and deployment automation experience.
Enterprise billing platform experience.
NetCracker RBM exposure or knowledge.
Production support and incident management experience.
AI technologies in software engineering, such as AI-assisted development tools.
Computer Science degree or equivalent technical qualification.

Responsibilities

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.
Apply established engineering patterns and guidance to build Java/Spring Boot 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.
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.
Develop and maintain application components that interact with Oracle DB, following agreed patterns for data access, integrity, and performance.
Support billing platform integrations and help maintain reliable dependencies across Oracle DB and the NetCracker RBM instance.
Work with teammates and dependent systems to help maintain billing flows, reconciliations, and service continuity.
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.