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Senior Java Developer - BSS/OSS - HYBRID

Proactive AppointmentsLondon🇬🇧United KingdomPosted 30 Jul 2026

Why This Role Stands Out

Advance your career by designing and developing enterprise-scale solutions in a hybrid environment, where you'll mentor junior developers and drive best practices. If you're a seasoned Java developer with expertise in microservices and RESTful APIs, this role offers a fantastic opportunity to make a significant impact. Apply today to join a dynamic team and contribute to innovative projects.

Quick Overview

Work Type
Hybrid
Schedule
Full Time
Level
Mid Senior

Job Description

Senior Java Developer - BSS/OSS - HYBRID

We're looking for an experienced Senior Developer to join a Software Engineering team delivering enterprise-scale solutions. This is a hands-on role where you'll design, develop and enhance high-performance applications while collaborating with architects, project managers and cross-functional teams. You'll also mentor junior developers and help drive engineering best practices.

Key Responsibilities

  • Design, develop and enhance enterprise software solutions.
  • Analyse business requirements and contribute to technical design.
  • Develop new features and product enhancements.
  • Carry out code reviews, unit testing and performance optimisation.
  • Support integration testing, bug fixing, releases and deployments.
  • Collaborate within Agile teams, contributing to sprint planning and estimations.
  • Produce technical documentation and promote development best practices.
  • Mentor junior developers and provide technical guidance.
Skills & Experience Essential
  • Extensive experience developing enterprise applications using Java.
  • Strong knowledge of Spring Boot and J2EE.
  • Experience building RESTful APIs, Microservices, and working with Kubernetes or OpenShift.
  • Strong SQL skills with experience of RDBMS, SQL, and PL/SQL.
  • Front End development experience with Angular, JavaScript, Bootstrap, HTML5, and CSS3.
  • Experience with JBoss or Oracle 10gAS application Servers.
  • Proficiency with Git, Maven, Jenkins, debugging tools, and the Software Development Lifecycle (SDLC).
  • Experience working within Agile development environments.
  • Previous experience in a Senior Developer or technical leadership role.
Desirable
  • Experience with JBoss Fuse, Apache Camel, DROOLS (JBoss Rules), or Business Intelligence platforms.
  • Experience with C/Pro*C in UNIX environments.
  • Knowledge of Telecom BSS/OSS, Mediation, Billing, or Online Charging systems.
  • Experience with cloud-native architectures and DevOps pipelines.
  • Experience working on high-volume enterprise systems within telecommunications, billing, or similar industries.

Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for interview will be contacted.

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Skills

Microservices
Oracle
PL/SQL
SQL
Spring
Spring Boot
Agile
Angular
Apache
Bootstrap
Git
Java
JavaScript
Jenkins
Kubernetes

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