Open

Platform Engineer

Platform Engineer

We’re looking for a Platform Engineer to give our product teams the infrastructure, tooling, and automation they need to ship reliably and move fast. You will treat our internal platform as a product in its own right — designing and running the CI/CD pipelines, cloud infrastructure, and developer tooling that our Product Engineers rely on every day. Like everyone in Product Engineering, you'll avoid working in a silo: you'll stay close to how the product actually runs, and pick up work outside strict infrastructure boundaries where it's the right thing to do.

We’re looking for a Platform Engineer to give our product teams the infrastructure, tooling, and automation they need to ship reliably and move fast. You will treat our internal platform as a product in its own right — designing and running the CI/CD pipelines, cloud infrastructure, and developer tooling that our Product Engineers rely on every day. Like everyone in Product Engineering, you'll avoid working in a silo: you'll stay close to how the product actually runs, and pick up work outside strict infrastructure boundaries where it's the right thing to do.

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:

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.

Product Engineering

Product Engineering

Benefits

25 days PTO

Offsite & socials

Parental leave

Employee assistance

10 days work abroad

Private medical

Enhanced sick pay

Benefits

25 days PTO

Offsite & socials

Parental leave

Employee assistance

10 days work abroad

Private medical

Enhanced sick pay

Sponsorship

Sponsorship

Yes