Open
LOCATION
Canary Wharf, Hybrid
basis
Full-time, permanent
salary
DOE
About Onetrace
Great products start with great people.
Our focus on user experience has helped us become the leading software for fire protection subcontractors across the UK.
We build tools that actually work on the ground — fast, intuitive, and simple to use.
Onetrace is growing quickly, recognised as one of the fastest-growing companies in the UK and in London’s construction sector. We’re bootstrapped, profitable, and on a mission to become a global ConTech leader.
Join a smart, ambitious team where your ideas matter and your work shapes what’s next. Learn more about life at onetrace here.
What you’ll do
Design, build, and maintain CI/CD pipelines that let product teams ship safely and frequently
Own and evolve our cloud infrastructure (AWS), balancing reliability, scalability, security, and cost
Build and maintain Infrastructure as Code so environments are reproducible, auditable, and easy to reason about
Implement and improve monitoring, logging, and observability so issues are caught early and diagnosed quickly
Build self-service tooling and clear documentation so product teams can provision, deploy, and debug without waiting on a ticket
Partner with Product Engineers to understand where infrastructure or tooling is slowing delivery, and prioritise platform improvements against real developer pain points
Champion security, performance, and operational best practices across the engineering team
Develop internal tools, improve test infrastructure, and occasionally work on product features
Leverage AI to improve engineering workflows by building cloud-based agent tools and helping teams adopt effective practices
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.
Our engineering culture
We're not your typical "move fast and break things" company. We believe in building thoughtfully and shipping quality infrastructure that genuinely helps our engineers do their best work.
Working here means being a platform engineer with a product mindset. We care about engineers who understand the bigger picture: the product teams relying on what you build, the features they're trying to ship, and the real-world impact of the tools and infrastructure you provide. You'll bring curiosity to the "why" behind the work, not just the "how," and you'll see your code in action helping other engineers get their jobs done with less friction.
What this means day-to-day:
We encourage you to talk to product engineers and understand the friction that's really slowing them down
Work as equals with product engineers to find the best infrastructure and tooling solutions
Care about your work from conception through production and beyond
Balance shipping velocity with reliability, security, and developer experience
Speak up with ideas, concerns, and feedback to help the team improve
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. Every feature our product teams ship depends on the platform underneath it — the pipelines, infrastructure, and tooling that let them build quickly and reliably. Get that right, and it ripples all the way out to subcontractors having a smoother, more reliable day-to-day, to a higher standard across projects, to safer buildings for everyone to live and work in. And we think that's something worth getting excited about.
Want to dig 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 our Co-Founders, Lewis and Greg, outlining the mindset and manifesto that guide how we build.
What you’ll bring
Essential
JavaScript / TypeScript – core programming languages
Node.js – comfortable working across our backend stack
AWS infrastructure and services
Infrastructure as Code (Terraform or similar)
CI/CD pipelines and DevOps practices
Git – version control and collaborative workflows
Experience with monitoring, logging, and observability tools
Knowledge of scalable system architecture and design patterns
Familiarity with modern AI tools and a habit of staying up to date with how they can improve engineering workflows
Highly desirable
Container orchestration (Kubernetes, ECS, or similar)
MongoDB or other NoSQL database
SQL databases and query optimisation
Distributed systems experience
Message queues and background job processing
Caching strategies and performance optimisation
Nice to have
Security best-practices implementation
Experience building internal developer platforms or tooling
Experience in a growth-stage startup or B2B SaaS
Knowledge of the construction industry
Hybrid guidelines
We operate a hybrid working model, with a minimum expectation of 2-3 days per week in the office. This is a core part of how the role works and isn’t something we’re flexible on.



