Fraud à Grande-Bretagne

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What We'll Bring:

We Are TransUnion:

TransUnion is a major credit reference agency, and we offer specialist services in fraud, identity and risk management, automated decisioning and demographics. We support organisations across a variety of sectors including finance, retail, telecommunications, utilities, gaming, government and insurance.

What You'll Bring:

We’re looking for a Senior Systems Developer to join our growing Integrations and Decisioning team.

Day to Day You’ll Be:

Design and build reliable backend systems and infrastructure tooling

Use TDD to write high-quality, maintainable code and build out automated test suites

Own reliability, observability, and performance of key services

Collaborate with clients to understand requirements, debug issues, and propose solutions

Drive improvements to system architecture, automation, and deployment processes

Mentor junior developers and contribute to a strong engineering culture

Take ownership of problems—investigate, iterate, and fix

Essential Skills & Experience:

Strong programming skills in Node.js or similar backend language

Deep understanding of TDD and a strong focus on automated testing

Experience with Cloud Platforms AWS or GCP

Experience owning backend systems in production environments

Comfort working directly with clients to gather requirements and debug issues

Strong problem-solving skills and a desire to understand the root cause of complex issues

Clear communicator—both in writing and on calls

Desirable Skills & Experience:

Infrastructure-as-code, CI/CD, and observability tooling

Experience scaling systems under sustained load

Contributions to internal tooling or open source

Experience with large datasets and machine learning models

Impact You'll Make:

What’s In It For you?
At TransUnion you will be joining a friendly, forward thinking global business.
As well as an excellent salary and bonus scheme or commission scheme (if joining our sales teams) our benefits package comes with:

26 days’ annual leave + bank holidays (increasing with service)

Global paid wellness days off + a bonus day off to celebrate your birthday

A generous contributory pension scheme + access to the TransUnion Employee Stock Purchase Plan

Private health care + a variety of physical, mental and financial fitness wellbeing programmes such as access to mindfulness tools

Access to our diversity forums and communities so you can get involved in causes close to your heart

TransUnion – a place to grow:
If there’s something on the list of essential / desirable skills that you can’t quite tick off, don’t let that put you off applying. We are open to exploring training and development opportunities for the right candidate to ensure you are successful.
We know imposter syndrome is real, lets confront it so we can continue to grow and thrive together.

Flexibility at TU:
We recognise that our people need the freedom to balance their day-to-day lives with their work. This is why we’ve set out to create inclusive and flexible policies and practices for you to accommodate all your responsibilities and needs: children, family and beyond. If the role is advertised as full time, don’t let this stop you from applying. Let us know if you’re looking for a part time or flexible working arrangement and we can discuss this with you.

Additional support:
At TransUnion, we’re committed to fostering an inclusive and diverse workplace where all individual’s talents and perspectives are valued. When you apply for a position with us, you’re not just joining a team, you’re becoming part of a community that celebrates differences and embraces equality. We understand that everyone has different needs, which is why we offer a range of reasonable adjustments to our recruitment process. Please let us know if you require any reasonable adjustments to help you through the application process or to attend an interview with us by contacting

Interview & Hiring Process:
Most of our recruitment processes are virtual, so you’ll get to know our hiring managers and teams over the phone and through video. If we need you to attend a physical in person interview your recruiter will inform you of this.

We do not accept any unsolicited CV’s from recruitment agencies. If you are a recruitment agency on our PSL our talent team will contact you directly should we require any assistance.

#LI-Hybrid

Find out more about Life At TU UK:

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.

TransUnion Job Title

Sr Engineer, Software Development