Product Engineer (Mid Level/Full-Stack)

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

Visa sponsorship available for candidates based in the UK with a transferable work visa.

About Onetrace

We're building the market leading software for fire protection subcontractors across the UK. Recognised by the UK Fast Growth Index as one of the fastest-growing companies, we are now expanding into new trades and taking Onetrace global.

Engineering Culture

We believe in thoughtful and quality software that genuinely helps our customers solve real problems. We're not just a "move fast and break things" company - we care about the bigger picture: the operatives on site, the project teams behind them, and the real-world impact of the tools we ship.

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.

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, 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. Engineering is not just about executing a specification - it's about taking ownership of the user experience and the business outcome.

Your tech stack

Essential

• JavaScript / TypeScript - core programming languages.
• Node.js - 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.

Office environment

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.