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Whether it’s a Friday-night feast, a post-gym poke bowl, or grabbing some groceries, our tech platform connects tens of millions of customers with hundreds of thousands of restaurant, grocery and convenience partners across the globe.

About this role

As a Senior Quality Engineer in our backend-focused Location Services team, you will play a key role in ensuring the quality, reliability, and resilience of the core services that power our platform. Our team owns critical .NET APIs that are central to our order flow and location infrastructure.

We are looking for someone who is deeply passionate about backend systems and motivated to raise the technical bar. In this role, you will have real autonomy to shape our testing strategy, embed quality-first thinking, and influence architectural decisions across the domain. You will be a trusted voice in the team, helping to prevent issues before they arise and making sure that quality is a shared mindset throughout our engineering culture.

Location: Hybrid- 3 days a week from our London office & 2 days working from home

Reporting to: Technology Manager

These are some of the key ingredients to the role:

• Define and lead the quality engineering strategy for our backend services, fostering a culture where quality is a shared responsibility.
• Mentor team members and provide clear, data-driven insights to guide technical direction and elevate engineering practices.
• Proactively identify and advocate for technical improvements, including architectural enhancements and modern testing approaches.
• Continuously evolve our testing processes and automation frameworks to improve efficiency, reliability, and scalability within an agile environment.

What will you bring to the table?

• Demonstrated experience as a Senior Quality Engineer in a .NET backend environment.
• Strong programming skills with a track record of building robust test automation frameworks, preferably in C#.
• Deep expertise in API quality engineering, including functional, performance, and security testing of RESTful services.
• Hands-on experience with CI/CD integration, post-deployment monitoring, and risk-based exploratory testing to uncover issues beyond automation.
• Proven ability to influence engineering teams, drive quality improvements, and contribute to technical and architectural decisions.
• Solid understanding of modern testing principles and patterns, such as the testing pyramid and shift-left methodologies.

At JET, this is how we play

Our teams forge connections internally and work with some of the best-known brands on the planet, giving us truly international impact in a dynamic environment.

Being the best at what we do isn’t just about delivering on our strategy. It's a competition for something incredibly valuable – our customers' choice. Every time a customer decides where to order, they're picking a side.

At the heart of the JET Customer League are our values and behaviours. They guide every interaction, every decision, every innovation. These are the actions we need to perform consistently and brilliantly, to surpass the competition and earn our customers’ loyalty, again and again.

Fun, fast-paced and supportive, the JET culture is about movement, growth, helping one another to succeed and celebrating wins. By truly living our values and embodying our behaviours, we’re building a customer-first culture which enables us to stay one step ahead of the competition.