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Overview

We’re looking for a Senior Software Engineer to join our high-performing, cross-functional squad, where innovation meets impact. You’ll play a central role in building scalable, cloud-native systems using the latest in AI, automation, and modern architecture. This is more than just a coding job—you’ll be deeply involved in product development, architectural decisions, and best-practice engineering culture. If you\'re passionate about writing clean, well-tested code and collaborating with talented peers, this is your opportunity to make a real difference.

What you will be doing

• Code That Matters: Design, build, and maintain robust full-stack solutions across our platform using TypeScript, AWS, GraphQL, and more.
• Own the Stack: From frontend to backend to infrastructure, you’ll take full ownership of the code you write and the systems you build.
• Innovation First: Help us integrate AI and automation into our products, solving real-world problems in smarter ways.
• Collaborate & Learn: Engage in pair programming, code reviews, and technical discussions that drive engineering excellence.
• Build It Right: Apply a test-driven mindset with robust automated testing and CI/CD pipelines (GitHub Actions).
• Keep It Running: Ensure systems are secure, scalable, observable (e.g., DataDog), and performant in production.

What we are looking for

• Senior-Level Expertise: Proven experience as a Senior Engineer or multiple years in software engineering roles.
• API & Data Mastery: Skilled in building resilient APIs (REST/GraphQL) and managing backend services & databases.
• TDD Enthusiast: Proficient with testing frameworks like Jest, Pact, and a strong belief in quality-first development.
• CI/CD Experience: You’ve shipped code using GitHub Actions (or similar), and you know how to keep the pipeline green.
• Observability & Reliability: Experience with monitoring and alerting tools like DataDog.
• Proactive Problem-Solver: You take initiative, work independently, and thrive on solving complex technical challenges.

Interview Process

We want our process to be fair and transparent, so it’s important you know the stages:

1. Screening call with our recruitment team to learn about Collinson, values, and your expectations.
2. Short call with the VP of Software Engineering to discuss the team, projects, and your background.
3. Tech test to complete at home (approximately 1 hour).
4. Final stage: a ~2-hour session with the engineering team to review your solution and discuss job-specific scenarios.

Equal Opportunity & Support

Collinson is an equal opportunity employer and welcomes differences in all forms including colour, race, ethnicity, gender identity, sexual orientation, neurodivergence, family status, age, individuals with disabilities and people from all backgrounds, cultures and experiences as we strongly believe this contributes to our on-going success.

We are focused on continually evolving our purpose-driven, high-performing culture, providing an environment where our people have the opportunity to achieve their full potential and do meaningful work. Our company values are: Act smarter, Do the right thing, One team and Be insight led. If you need any extra support throughout the interview process, please email us at ukrecruitment@collinsongroup.com.

Beacons & Contacts

We have Beacons (Domestic Abuse Advisors) supporting within each of our global offices. They will be your point of contact if you or someone you know needs support.

Job Details

• Seniority level: Mid-Senior level
• Employment type: Full-time
• Job function: Information Technology
• Industry: Consumer Services and Travel Arrangements

London, England, United Kingdom