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Senior Software Engineer
Senior Software Engineer – BSS/OSS Systems (Hybrid)
At Gamma, we provide voice, data, and mobile solutions to businesses across the UK, Germany, Spain, and the Benelux region. Our people are at the heart of everything we do—here’s how you could contribute to our growing, forward-thinking team.
About the Role
As a Senior Software Engineer, you’ll design, build, and maintain cutting-edge systems in the BSS/OSS space, ensuring scalability, security, and robust performance. You’ll shape the technical vision, offer mentorship to the team, and serve as a key architect in large-scale platform initiatives—while driving best practices in development, testing, and continuous delivery.
Responsibilities
Your core responsibilities will include:
- Leading technical design, development, code reviews, and testing for end-to-end solutions
- Guiding and coaching engineers on technologies, standards, and best practices
- Enhancing CI/CD pipelines and engineering processes
- Participating in Agile ceremonies and contributing to project delivery & continuous improvement efforts
- Collaborating with Product, Operations, and stakeholders to refine requirements and deliver impactful solutions
- Ensuring systems meet cost controls, security, and asset management standards
- Creating technical documentation to improve maintainability and business operations
- Championing quality engineering through automation, testing, and innovation in tools/technologies
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What You’ll Need
We’re looking for candidates with experience in some—but not necessarily all—of the following:
- Strong experience with Java (Java 8+) and mastery of object-oriented programming (OOP)
- RESTful API design, with an emphasis on scalability and maintainability
- SQL and database design expertise, including performance optimisation
- Familiarity with version control (preferably Git) in collaborative environments
- Knowledge of automated testing (e.g., JUnit, Cucumber, Selenium) and CI/CD pipelines
- Experience working in Agile teams and using Jira or similar tools
- (Desirable) Experience with AWS and cloud-native development
- (Desirable) Understanding of containerisation (e.g., Docker, Kubernetes)
We welcome applications from candidates who may not tick all boxes but align with our mission—exceptional professionals who can grow into the role.
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What We Offer
- 25+ days annual leave + birthday leave
- Subsidised private medical insurance
- 5.1% matched pension contributions
- Extended parental leave
- Life assurance & income protection coverage
- Share save and incentive plans
- Electric Vehicle and Cycle-to-Work schemes
- Employee discounts
- Volunteer leave day
Key Notes
✅ Remote work eligibility: Hybrid role with office/home flexibility.
⚠ Requirements: UK work eligibility + basic DBS check. 🚫 Relocation support: Not available for this role.
As an equal-opportunity employer, we celebrate diversity and inclusion. We welcome candidates from all backgrounds, particularly those traditionally underrepresented in tech, and foster a culture of trust, autonomy, and flexibility to support your personal and professional growth.
If you don’t meet every requirement but feel you’d thrive in this role—apply anyway. We’re excited to meet visionary engineers who are passionate about shaping the future of telecommunications.
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