Senior Software Engineer

A Bit About Us 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. When you join us, you'll be part of a collaborative, forward-thinking team that's transforming how businesses connect and communicate globally. We're growing fast, but we never lose sight of what matters: our people. Whether you're looking to develop your skills, take on new challenges, or make a meaningful impact, Gamma is the place to do it. What we are looking for: Join Gamma's Product Engineering team and help build the next generation of business communication solutions. You'll play a key role in developing scalable, high-quality applications using TypeScript, Node.js, React, and AWS, while influencing technical direction and mentoring fellow engineers. What you'll do:

• Design, build, and maintain full-stack features across our platform and applications.
• Collaborate with Product and Engineering teams to shape scalable, future-proof solutions.
• Develop APIs and third-party integrations using best practices.
• Drive engineering excellence through TDD, code reviews, pair programming, and automated testing.
• Contribute to architecture decisions and solution design.
• Support CI/CD pipelines and reliable software delivery.
• Mentor engineers and champion continuous improvement across the team. What we're looking for:
• Strong commercial experience with TypeScript, React, and Node.js.
• Proven experience building scalable front-end and back-end applications.
• Experience mentoring engineers and promoting engineering best practices.
• Strong testing experience with tools such as Jest and Playwright.
• Cloud experience with AWS (preferred), Azure, or GCP.
• Experience maintaining CI/CD pipelines. Bonus points for: Kubernetes, VoIP, or WebRTC experience. This is an excellent opportunity for a senior engineer looking to make a real impact, influence technical decisions, and help shape the future of Gamma's products. What do we offer you?
• 25 days annual leave + birthday
• Subsidised private medical insurance
• 5.1% matched pension contributions
• Enhanced parental leave
• Life assurance and Income protection
• Share save and incentive plans
• Electric Vehicle and Cycle scheme
• Employee discounts
• Volunteer day A few things to note We require all candidates to be eligible to work in the UK and pass a basic DBS check. If you don't meet every requirement but feel you could thrive in this role, we would still encourage you to apply. For recruitment agencies – we have a network of fantastic partners that support us in our hiring from time to time. We're not looking to increase that network currently, so please don't send speculative CVs.