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Lead Software Engineer
Lead Software Engineer – Gamma
About the Role
At Gamma, we’re transforming how businesses connect and communicate globally through voice, data, and mobile solutions delivered across the UK, Germany, Spain, and the Benelux region.
This role is for a Lead Software Engineer who will lead the development and maintenance of Gamma’s Group Products suite, including:
- Proprietary OSS/BSS
- UCaaS & CCaaS solutions
Your primary responsibility? Delivering scalable, secure, high-performing systems while driving best practices, mentoring engineers, and impacting our product strategy at scale.
Key Responsibilities
As a Lead Software Engineer, your day-to-day will involve:
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Technical Leadership
- Drive complex development for new features and existing systems using TypeScript, Node.js, and React.
- Work with product, architecture, and engineering teams to scope, plan, and estimate scalable and future-proof solutions.
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System Design & Integration
- Design and build secure, high-performance APIs.
- Integrate third-party tools and services with gamma’s ecosystem.
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Documentation & Collaboration
- Create and review detailed solution designs, accounting for security, performance, and system-wide effects.
- Lead code reviews, fostering high standards and mentoring engineers.
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Operations & Reliability
- Apply site reliability engineering (SRE) principles to improve observability, resilience, and incident response.
- Monitor, profile, and optimise application performance, ensuring SLAs are met (including capacity planning).
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- Process Improvement
- Identify and address technical debt, proposing improvements to systems, processes, and tooling.
Requirements
You don’t need every skill, but the following will help you thrive in this role:
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Strong technical foundation
- TypeScript, Node.js, React/Angular (preferred) – deep working knowledge.
- Understanding of software architecture, design patterns, and API principles.
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Scaling systems & tooling
- Experience with CI/CD pipelines, automated testing (e.g., Jest, Playwright), and version control.
- Hands-on experience with AWS and cloud-based containerisation (e.g., Kubernetes).
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Production expertise
- Proven track record running large-scale distributed systems.
- Debugging and performance optimisation skills.
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Mentoring & leadership
- Experience mentoring engineers and contributing to technical decision-making.
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Observability & SRE
- Knowledge of monitoring systems, observability, and site reliability engineering.
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Bonus points for:
- Java experience.
- Experience with telecoms tech (e.g., VoIP, WebRTC).
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About Us
Gamma is a fast-growing company where people are our priority. We invest in your growth, reward autonomy, and foster a collaborative culture built on trust and inclusion.
Perks & Benefits
We believe in balancing ambition with well-being—we offer:
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Work-life balance
- 25 days annual leave + birthday day off (why not?).
- 5 enhanced parental leave days ( EUR €30/day).
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Health & security
- Private medical insurance (subsidised).
- Life assurance & income protection.
- 5.1% matched pension contributions.
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Financial growth
- Share save & incentive plans to align with mission success.
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Flexibility & practicalities
- Electro Vehicle & Cycle-to-Work Scheme.
- Employee discounts.
- Volunteer day (recharge by giving back).
Additional Notes
✅ Eligibility: All candidates must be UK work-ready and pass a basic DBS check.
📢 Equal-opportunity promise: We’re committed to diversity and inclusion. All backgrounds are welcome, particularly those underrepresented in tech.
Verdict? You don’t need to check every box. Apply if you’re passionate about innovation, mentorship, or cloud-native development—we’re here to help you grow into the role regardless.
"At Gamma, we’re shaping the future of global communication. Join us—and lead it."
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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