Job Title: Product Engineer (Full-Stack)
Department: Product Engineering
Basis: Full-time, permanent
Location: Canary Wharf, London - WeWork (Hybrid)
Reporting to: Director of Product Engineering

About the role

We're looking for a Product Engineer 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

What you’ll bring

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
Familiarity with modern AI tools and a habit of staying up to date with how they can improve engineering workflows

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)

Interview process

1st Stage – Introductory Conversation
A 45-minute conversation with our Senior Talent Partner focused on your background, motivations, and overall fit for the role and business.
2nd Stage – Technical & Product Discussion
A 45-minute discussion with our Director of Product Engineering to explore your technical experience, product mindset, and approach to building scalable solutions.
3rd Stage – Onsite Technical Task
A 2.5-hour onsite collaborative technical exercise designed to simulate real-world problem solving, technical decision-making, and teamwork.
Final Stage – Leadership Conversation
A 1-hour virtual Q&A session with our CEO focused on leadership, collaboration, and alignment with Onetrace’s vision and culture.

🔗 Full Job Description: https://onetrace.com/careers/product-engineer