Senior Tester

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Team Overview

TransUnion UK provides the data, analytics and software that enable businesses to build more valuable customer relationships. We specialise in managing consumer data for businesses across every sector.
We focus on developing innovative products and services that help businesses make smarter and more informed decisions throughout the customer lifecycle.
We’re TransUnion and we believe in Information for Good This is a hybrid position and involves regular performance of job responsibilities virtually as well as in-person at an assigned TU office location for a minimum of two days a week.

Role Overview And Core Responsibilities

Senior Test Engineer

About this Role:

As a Senior Test Engineer, you will play a key role in ensuring the quality and reliability of our modernised, cloud‑hosted platform. You will work as part of a product team, contributing to testing activities across the delivery lifecycle, with a growing focus on post‑release and in‑life quality.

You’ll be hands‑on in testing new and existing services, helping to validate changes before and after release, and supporting the investigation of issues identified in live environments. You’ll work closely with engineers, product managers, and other testers to ensure quality risks are understood and addressed early.

This role offers the opportunity to develop deeper expertise in modern testing practices, cloud‑based systems, and production‑focused quality, while being supported by Lead and Principal Test Engineers.



Key Responsibilities

• Contribute to testing activities across the delivery lifecycle, including:

    • Story and feature testing

    • Regression and exploratory testing

    • Post‑release verification and validation

• Support post‑release testing activities, such as:

    • Smoke and health checks

    • Validation of deployed changes

    • Investigation and reproduction of live defects

• Work with engineers and other team members to identify quality risks and agree appropriate test approaches

• Execute and maintain automated and manual tests in line with agreed team strategies

• Use logs, monitoring, and other production signals (where appropriate) to support defect investigation and quality assessment

• Ensure test results, risks, and progress are clearly communicated within the product team

• Contribute ideas and improvements to testing practices, tools, and ways of working

• Support knowledge sharing within the test community and actively learn from more senior testers



Skills and Experience

• Commercial experience working in a testing role within an agile development environment

• Experience testing service‑based or cloud‑deployed systems

• A solid understanding of testing principles and a passion for delivering quality outcomes

• Experience with test automation techniques and supporting frameworks

• Experience testing APIs and web services

• Familiarity with BDD / ATDD approaches

• Experience with non‑functional testing (e.g. performance, load, security, or usability), or a strong interest in developing these skills

• Good problem‑solving skills, with a willingness to take ownership of issues and see them through to resolution

• Strong communication skills and a collaborative mindset

• Willingness to learn new technologies, tools, and testing approaches as the platform evolves

What This Role Is Not

This role does not carry overall test leadership or community ownership responsibilities. Strategic direction, cross‑team alignment, and organisational‑level decision making are supported by Lead and Principal Test Engineers.



Progression

This role provides a clear pathway towards Lead or Principal Test Engineer, with opportunities to grow technical depth, influence, and responsibility over time.

Required Knowledge And Experiences

Skills and Experience

• Commercial experience working in a testing role within an agile development environment

• Experience testing service‑based or cloud‑deployed systems

• A solid understanding of testing principles and a passion for delivering quality outcomes

• Experience with test automation techniques and supporting frameworks

• Experience testing APIs and web services

• Familiarity with BDD / ATDD approaches

• Experience with non‑functional testing (e.g. performance, load, security, or usability), or a strong interest in developing these skills

• Good problem‑solving skills, with a willingness to take ownership of issues and see them through to resolution

• Strong communication skills and a collaborative mindset

• Willingness to learn new technologies, tools, and testing approaches as the platform evolves

TransUnion Overview:

At TransUnion, we encourage and are committed to creating a real, positive impact and shared sense of purpose within our Workforce for Good, which empowers our people to grow, innovate and contribute to a better future for our communities and customers. We strive to build an environment where our associates are in the driver’s seat of their professional development— while having access to help along the way. We recognize that success comes when our associates thrive both professionally and personally; that’s why we prioritize work/life flexibility and offer resources for our teams across the globe to collaborate and drive excellence.

Be a part of our Workforce for Good – you’ll work with great people, pioneering products and cutting-edge technology.

TransUnion Job Title

Sr Engineer, Development Ops