Backend Engineer – Mid-Level

AASHTO (American Association of State Highway and Transportation Officials)

Backend Engineer to join UK’s fastest-growing used car marketplace on developing vehicle transaction platform. Collaborate with teams to deliver features and improve performance with a dynamic service platform.

Posted 5/15/2026full-timeLondon • 🇬🇧 United KingdomMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSJavaScriptNode.jsNoSQLTypeScript

About the role

Key responsibilities & impact

Develop and deliver new features for our customers: the Dealers and Sellers of vehicles in a vibrant auction space.
Collaborate with product, and design teams to deliver excellent user experiences.
Improve and maintain our dynamic platform of services to improve performance and efficiency as we scale.
Build maintainable, reusable, and reliable code.
Work with our AWS infrastructure to ensure high performance, monitoring, and alerting.
Be an active member of our flat-structured development team, contributing to technical and product strategy discussions.
Use Kiro and other AI tools to move faster, explore solutions, and focus your time on the decisions that matter.
Implement software development best practices, including testing and code reviews.

Requirements

What you’ll need

Commercial experience with Typescript and/or JavaScript, including ES6/7 features.
Experience with Node.js and related frameworks (e.g., Express, Sequelize).
Experience working with relational databases and NoSQL databases.
Understanding of web design patterns.
Experience working in a collaborative, agile team environment.
Experience with automated testing is a plus.
Interest in using AI tools as part of your programming workflow.

Benefits

Comp & perks

A competitive salary
BUPA health insurance
Discounted gym membership through BUPA
OnHand volunteering membership and one paid volunteering day per year
Hybrid working
Pension scheme
Motorway car leasing scheme - lease a zero-emissions electric vehicle at a significant discount
Enhanced parental leave - We offer enhanced maternity pay (26 weeks of full pay) and enhanced paternity pay (4 weeks of full pay) to eligible employees.
Workplace nursery scheme
Regular social events
Cycle to work scheme

ATS Keywords

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Hard Skills & Tools

TypescriptJavaScriptES6Node.jsExpressSequelizerelational databasesNoSQL databasesautomated testingweb design patterns

Soft Skills

collaborationcommunicationagile teamworkproblem-solvingtechnical strategy contribution