Senior Backend Developer – Remote – £110k + Equity

Company: limitless
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Senior Backend Developer – Remote – £110k + Equity

Limitless has been exclusively engaged by one of the fastest-growing start-ups, building a first-of-its-kind enterprise security platform for the AI era.

The engineering and product team is now 28 strong and fully remote. They’re looking for a Senior Backend Engineer to design, build and run the large-scale, high-performance systems behind the platform. You’ll have a real hand in how it scales, how reliable it is and how the engineering team works as it grows.

What you’ll be doing:

  • Building and maintaining scalable backend services in Python on AWS serverless infrastructure
  • Shipping quickly without cutting corners, backed by solid testing and clear documentation
  • Reviewing code and giving feedback that raises the bar for the whole team
  • Working closely with engineers, designers and product to turn ideas into reliable features

What they’re looking for:

  • Expert-level Python and a track record of building and scaling large production systems
  • Hands-on AWS serverless experience and infrastructure as code (they use AWS CDK)
  • Relational and NoSQL experience (PostgreSQL and DynamoDB)
  • Someone self-directed who owns features end to end, from concept through to production
  • A genuine focus on the user and how your work affects their experience

Fully remote: work from home or a co-working space anywhere in the UK

Interview process: Fully remote and transparent, with an intro call, a career projects session where you present two projects you’ve worked on, a panel interview, then the offer stage

Team size: 28 across engineering and product

Benefits: Bupa private medical, life assurance, 4% employer pension (salary sacrifice), uncapped PTO, internet reimbursed, annual allowance for local meetups, and an all-expenses-paid annual offsite to a secret destination

A brilliant business with a deeply experienced engineering team and a real people-first approach to flexibility and work-life balance.

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Posted: October 17th, 2026