Mid-Level Full Stack Software Engineer in City of London

Sensat is a geospatial AI business that powers advanced and highly functional digital twins for the world's most critical infrastructure projects. We partner with the world's largest construction, engineering and critical infrastructure companies, including National Grid, Network Rail, Heathrow and Severn Trent Water. Our AI-powered digital twins help teams digitally visualise, plan and manage projects, providing Project Confidence Through Clarity.

We are a high trust, high impact team, who offer purpose driven work. We operate with autonomy and flexibility in an agile, flat structure. We look for highly talented, adaptable and curious individuals who love solving meaningful problems and who share our resilient team spirit when facing challenges!

The role exists to bridge the gap between our massive geospatial datasets and a seamless user experience. This is a high-trust, high-impact role where Sensat engineers solve problems rather than solely implement solutions. You’ll define the direction of our knowledge model, contribute across the platform to ensure our customers have a well-rounded experience, and help the team continuously raise the bar.

If you’re after autonomy, developing novel solutions, and delivering real-world value, you’ll thrive here.

What you’ll do:

• Build responsive, accessible user interfaces that make complex geospatial and 2D/3D/4D spatial data intuitive to interact with.
• Collaborate with Product and Design to refine ideas and turn them into scalable, performant, and maintainable software solutions.
• Design and implement APIs to process and serve data, using Protocol Buffers and gRPC for service contracts.
• Work with relational databases (e.g. PostgreSQL) to design schemas, write efficient queries, and ensure data integrity.
• Contribute to and improve the standards for software engineering, such as code quality, automated testing, documentation / knowledge sharing, and broader team processes.
• Contribute to maintaining the reliability of Sensat’s enterprise platform.

What you’ll bring:

• Solid experience building full-stack web applications, with hands-on work across frontend, API, and database layers.
• Strong experience in a modern frontend framework (e.g. Angular 17+, React, or Vue) for building complex, data-rich applications.
• Significant experience with data-oriented web applications.
• Understanding of data modelling in a production context.
• Experience with backend languages for building scalable production systems. We use Go in our stack but experience in any language is welcome.
• Strong attention to detail and a commitment to clean code, balancing technical excellence with practical outcomes.
• Independent problem-solver who takes initiative on features, collaborates openly, and supports the team.
• Active knowledge sharing with the team, helping onboard new members, and looking for ways to improve development workflow.
• 2+ years commercial development experience, demonstrating your ability to build, test, and ship reliable code.

Bonus Points For:

• Hands-on experience with gRPC and Protocol Buffers for API design and defining service contracts.
• Side-projects or participation in open source projects in a related field.
• Prior work in geospatial, web mapping or construction industries.

What we’ll bring:

• Significant equity share options.
• 30 days of annual leave (in addition to bank holidays).
• A flexible working environment.
• £500 personal development fund.
• Regular social events.
• Immediate access to mental health support through Spill.
• Enhanced Family Leave for those welcoming a new arrival.
• Opt-in Corporate health and wellbeing cash plan (offering up to £1700 in cash back annually).
• MacBook, mouse & keyboard and £250 towards setting up your WFH environment.
• Pension: with Penfold. Employer contribution of 3%, employee contribution set at 5% but can be increased.
• Access to the benefits of our Fora office membership, including access to gyms and fitness classes.
• Other benefits including cycle to work scheme, season ticket loans, eye-care vouchers, payroll giving.

At this time, we are only able to accept applications from those who have a right to work in the United Kingdom and who do not require sponsorship as we cannot provide this at this time. Our office is in Old Street, London.

Equality, Diversity and Inclusion:

We are an equal opportunities employer and are committed to creating a diverse and inclusive workplace. We welcome applications from all individuals regardless of age, disability, gender, marriage or civil partnership status, pregnancy or maternity, race, religion or belief, sex or sexual orientation. All employment decisions are made on the basis of qualifications, merit, and business need, and our recruitment processes are conducted in accordance with the Equality Act 2010. If you require any adjustments during the recruitment process, please let us know.