Backend Engineer

By Alyson Emmerson | September 15, 2026 | Comments Off on Backend Engineer
  • Full Time
  • London / Hybrid
  • up to £70k USD / Year
  • Salary: up to £70k

Backend Engineer – Rapid–growth FinTech / SaaS – London / Hybrid – up to £70k (DoE)

We have an incredible opportunity for skilled, passionate and experienced Backend Engineers, with production experience with languages such as Node.js, Express, Python; familiarity with AWS (e.g. ECS/EKS, Lambda, SQS, EventBridge, RDS/DynamoDB, S3) and experience designing RESTful and event-driven APIs, to join a fantastic FinTech / SaaS on a hybrid working basis as soon as possible.

 

The Opportunity:

This is the perfect opportunity to join a successful FinTech SaaS, in a crucial role that is critical to the product’s success and the company’s future.
The Backend Engineer will need to have a passion for performance, a growth mindset and the drive to continuously learn, develop and improve. Our client encourages a learning culture and they embrace cutting-edge technology which will allow you to hone relevant, in-demand skills.

They are a rapidly scaling company, so this is a prime opportunity to get your foot in the door and join a dynamic, high-performance team on an exciting trajectory!

Our client is offering an annual salary up to £70k, dependent on experience and skillset.

 

What we’re looking for:

  • Graduate with a relevant degree in Computer Science / Engineering or similar, with c1+ years’ relevant work experience, ideally within FinTech, TMS or SaaS (including interns)
  • Proven production experience building and operating backend services (e.g. Node.js/Express, Python), with a technology-agnostic mindset and the ability to adapt to evolving stacks
  • Familiarity with AWS (i.e. ECS/EKS, Lambda, SQS, EventBridge, RDS/DynamoDB, S3)
  • Experience designing RESTful and event-driven APIs
  • Relational data modelling skills (financial or transactional systems advantageous)
  • Experience with concurrency, locking, idempotency and distributed consistency
  • Experience with message queues, background workers and workflow orchestration
  • Experience integrating AI/ML or decisioning services into backend platforms
  • Comfortable building systems that consume AI outputs and execute deterministic actions
  • Ability to design safety, audit and rollback mechanisms around automated execution
  • Understanding of the role context plays in designing a modern AI-native system
  • Hands-on experience deploying and operating Node.js services on AWS
  • Experience with CI/CD, infrastructure-as-code and containerised workloads
  • Drive to improve as an Engineer – eager to work with peers who push and support each other to continuously improve
  • Strong communication skills and the ability to liaise at all levels
  • Collaborative nature – ability to work independently and as part of a team
  • Ability and desire to work in a fast-paced, rapid-growth environment
  • Highly ambitious, driven and focused

Interested in this fantastic Backend Engineer opportunity? 

If this role is of interest to you and you have the passion, skills, knowledge and expertise we’re looking for, we’d love to hear from you!

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To apply for this job email your details to alysone@carousel.co.uk.

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Alyson Emmerson

Alyson is a highly effective recruitment consultant recognised for combining traditional, relationship-led recruitment with modern headhunting and search methodologies. This blended approach ensures a thorough, targeted process that leaves no stone unturned in identifying and securing high-quality talent for an international client base. Alyson works closely with established organisations, fast-growing startups, international scaleups, technology companies and digital marketing agencies, supporting organisations at critical stages of growth. Her honest, no-nonsense approach is frequently cited by clients as a refreshing alternative to transactional recruitment, enabling clear decision-making and efficient outcomes. Known for her consultative mindset, Alyson partners with clients to add genuine value through a candid, professional and responsive recruitment service. Her ability to quickly understand commercial objectives, role requirements and organisational culture has allowed her to build strong, trusted relationships and rapidly establish credibility with new clients. As a member of IPTER (International Partner Team of Executive Recruiters), Alyson has access to a global network of specialist recruitment partners, enabling her to deliver international search solutions and secure talent across multiple markets with confidence and discretion.