Senior Software Engineer

Company: numi
Apply for the Senior Software Engineer
Location: Manchester
Job Description:

Scale Global E-commerce & Mobility Architectures

Manchester, UK

The Opportunity

The physical world is the next frontier for artificial intelligence.

This pioneering technology company is building the Recognition Economy, a future where advanced intelligence enables physical spaces to become fully responsive, transforming everyday friction into seamless, intuitive experiences.

As the business enters its next phase of global growth, they are expanding their core application development team in Manchester. This is an opportunity to design, build, and scale a high volume mobility and pre-book e-commerce platform that impacts millions of travellers worldwide.

As a Senior Software Engineer, you will play a key role in shaping product direction, mentoring fellow engineers, and helping to build a world class technology ecosystem where software and physical spaces work together seamlessly.

For product focused engineers who thrive on solving complex challenges at scale, this is an opportunity to make a lasting impact on a truly global platform.

What You’ll Be Doing

As a senior member of the engineering team, you will take ownership of the backend services that power the company’s global platform.

Working closely with Product, Engineering, and external partners, you will help turn ambitious ideas into highly available, secure, and scalable solutions.

Key responsibilities include:

  • Designing and implementing scalable backend services that power the core pre-book e-commerce platform.
  • Owning the complete feature lifecycle, from technical design and specification through to deployment and ongoing optimisation.
  • Architecting distributed systems capable of supporting high volume consumer traffic across global airport environments.
  • Collaborating with international partners to design and integrate APIs that extend and strengthen the wider platform ecosystem.
  • Championing engineering best practices across automated testing, TDD, BDD, and CI/CD.
  • Supporting a blameless engineering culture where production incidents are viewed as opportunities for learning and continuous improvement.
  • Contributing to technical strategy and mentoring engineers across the wider team.

What They’re Looking For

The team values practical, collaborative engineers who are passionate about system design, code quality, and solving meaningful real world problems.

You’ll thrive in a fast paced environment, enjoy working across disciplines, and communicate clearly with both technical and non technical stakeholders.

  • Proven experience designing and delivering large scale distributed systems and microservices for high volume applications.
  • Strong backend engineering expertise using Scala, Java, or similar languages, with Scala as a primary development language.
  • Experience building and operating event driven architectures in production environments.
  • Strong database expertise across relational technologies such as MySQL and PostgreSQL.
  • Deep understanding of automated build, test, and deployment processes alongside modern CI/CD practices.
  • Experience delivering highly available, resilient systems at scale.

Nice to Have

  • Experience with containerisation technologies and Infrastructure as Code approaches.
  • Background working on e-commerce platforms or integrating with complex third party APIs.
  • Exposure to technologies such as TypeScript, React, Snowflake, AWS, or Datadog.
  • Interest in leveraging AI powered tooling to improve engineering productivity and software delivery.

Why Join?

This is an opportunity to work alongside a world class team of product leaders and engineers building technology at the intersection of software, artificial intelligence, and the physical world.

You’ll join an inclusive, high performance environment where innovation, collaboration, and continuous learning are genuinely valued.

High Growth Impact

Design and scale a global platform that is redefining how people move through and interact with physical spaces.

Innovation Through Collaboration

Benefit from an office first environment with four days per week in the Manchester office, enabling close collaboration, faster decision making, and stronger team connections.

Stay at the forefront of modern engineering practices by working with a contemporary technology stack supported by advanced AI assisted development tools.

Join a business where technical excellence is recognised, mentorship is encouraged, and engineers are empowered to influence both product and technology strategy.

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Posted: July 17th, 2026