Product Engineer

Job Title: Product Engineer 
Department: Product Engineering
Basis: Full-time, permanent
Location: Canary Wharf, London - WeWork (Hybrid Remote)
Reporting to: Director of Product Engineering
Sponsorship: We can offer visa sponsorship for candidates already based in the UK and holding a transferable work visa

About Onetrace

— Great products start with great people.

Our relentless focus on user experience has been the cornerstone of our growth, helping us become the market leading software for fire protection subcontractors across the UK.

That focus has paid off — Onetrace was recently recognised by the UK Fast Growth Index as one of the fastest-growing companies in the UK, and ranked among the top 50 fastest-growing companies in London.

We've grown by staying obsessed with building software that actually works for the subcontractors on the ground; fast, intuitive, and simple to use.

Now we're gearing up for our next chapter — expanding into new trades and taking Onetrace global. We're bootstrapped and driven by a clear mission: to lead the digital transformation for subcontractors, one trade at a time.

Come be part of a team that's smart, ambitious, and comfortable in the chaos of growth. Where your ideas matter, and your work shapes what comes next.

Want to learn more about our journey? Check out our LinkedIn page.

Our engineering culture

We're not your typical "move fast and break things" company. We believe in building thoughtfully and shipping quality software that genuinely helps our customers solve real problems.

Working here means being a product engineer, not just a backend or frontend specialist. We care about engineers who understand the bigger picture: the operatives on site, the project teams behind them, and the real-world impact of the tools we ship. You'll bring curiosity to the "why" behind the work, not just the "how," and you'll see your code in action helping people get their jobs done with less friction.

What this means day-to-day:

• Direct customer connection - we encourage you to talk to users and understand their real challenges
• Collaborative partnership - work as equals with product managers and designers to find the best solutions
• End-to-end ownership - care about your work from conception through production and beyond
• Quality focus - balance shipping velocity with code quality and exceptional user experience
• Open communication - speak up with ideas, concerns, and feedback to help the team improve
• Continuous learning - embrace mistakes as learning opportunities and seek better approaches

We value transparency, honest communication, and engineers who genuinely care about the impact of their work. Subcontractors use Onetrace to prove their work has been carried out compliantly, with full traceability from start to finish. That not only makes their day-to-day smoother and more reliable, it also raises the standard across projects — ultimately leading to safer buildings for everyone to live and work in. And we think that's something worth getting excited about.

 Want to go deeper?

If you're curious about what it's really like to build at Onetrace, we've written more about our approach, straight from the people you'll be working with:

• Our Product Engineering Culture – by Luca Carangella, Director of Product Engineering, on how we think about engineering and collaboration.
• Building Products for Subcontractors – by Lewis Bird, Co-founder & CTO, on our product philosophy and the landscape we're building for.
  

The role 

As a Full-Stack Product Engineer at Onetrace, your mission is to translate complex user needs into elegant, high-impact solutions. You will contribute to building and maintaining features across our stack. You'll collaborate closely with Senior Product Engineers on design and architecture decisions, write clean and efficient code, and help ensure best practices are followed throughout the development process.

What you'll do

• Own end-to-end delivery of features that solve real customer problems, from understanding user pain points through to shipped functionality across UI, application logic and database layers
• Build intuitive, performant interfaces that customers actually want to use—balancing user needs, accessibility, and technical constraints while ensuring features work reliably across devices and contexts
• Use customer feedback, analytics, and direct user insights to inform technical decisions, prioritise improvements, and validate that shipped features deliver measurable value
• Design and implement complex data flows, API integrations, and background processing systems that handle high-volume operations reliably while maintaining system performance and data integrity
• Partner with product, design, and customers to shape solutions early, translating business requirements into technical architecture while surfacing risks and opportunities that impact customer outcomes

Beyond the tech

We are building a team of Product Engineers because we believe the most impactful work comes from those who are closest to the problems we're solving. For us, engineering is not just about executing a specification; it's about taking ownership of the user experience and the business outcome. Our engineers are partners in discovery and strategy, empowered to question assumptions, contribute to the 'why,' and use their technical creativity to build not just what is asked for, but what our users truly need.

Your tech stack

Essential

• JavaScript / TypeScript – core programming languages
• – primary backend framework
• API design and implementation
• Git – version control and collaborative workflows
• Testing strategies (unit, integration, end-to-end)
• Experience with monitoring, logging, and observability tools

Highly desirable 

• AWS infrastructure and services
  
• MongoDB or other NoSQL database
  
• SQL databases and query optimisation
  
• CI/CD pipelines and DevOps practices

Nice to have 

• AdonisJS, NestJS or similar MVC frameworks
  
• Distributed systems experience
  
• Message queues and background job processing
  
• Caching strategies and performance optimisation
  
• Security best-practices implementation
  
• Experience in a growth-stage startup or B2B SaaS
  
• Knowledge of the construction industry
  
• Infrastructure as Code (Terraform or similar)

What we offer 

• 25 days PTO, plus bank holidays
• Enhanced parental leave
• Private medical insurance with Bupa
• NEST pension scheme
• Employee assistance programme
• Remote work abroad opportunities
• Apple MacBook and tech accessories
• Onetrace merch, regular team socials and annual company offsites
  

Diversity

Onetrace is committed to diversity in the workplace and proud to be an equal opportunity employer. If you require a reasonable adjustment, please contact us. All information will be kept confidential and will only be used for applying a reasonable adjustment.

Please note that our office is a dog-friendly environment. Candidates should be aware that dogs are present in the workplace, which may include shared spaces. If you have allergies or concerns, please let us know in advance.