Software Developer

TransUnion is seeking a Systems Developer for its Integrations and Decisioning team. This role involves designing and building reliable backend systems, writing high-quality code using TDD, and owning the reliability and performance of key services. The developer will collaborate with clients, drive architectural improvements, mentor junior developers, and take ownership of problem-solving to ensure a significant impact within a friendly, global business.

Must Have

• 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
• Strong programming skills in Node.js or similar backend language
• Understanding of TDD and a focus on automated testing
• 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

Good to Have

• Experience with Cloud Platforms AWS or GCP
• 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

Perks & Benefits

• 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
• Training and development opportunities
• Flexible working arrangements

TransUnion's Job Applicant Privacy Notice

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 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
• Understanding of TDD and a focus on automated testing
• 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:

• Experience with Cloud Platforms AWS or GCP
• 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 ukrecruitment@transunion.com

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:

https://twitter.com/TransUnionUK

https://www.linkedin.com/company/transunion/life/

TransUnion Job Title

Sr Engineer, Software Development

Beware of scams tied to potential career opportunities. If you received a link, email, text or social media communication you weren’t expecting from TransUnion, take a moment to confirm the relevant information. Be wary when providing personal information. Contact careers@transunion.com or (312) 258-1717 for assistance.

About Us

TransUnion is a global information and insights company with over 12,000 associates operating in more than 30 countries. We make trust possible by ensuring each person is reliably represented in the marketplace.

We do this with a Tru™ picture of each person: an actionable view of consumers, stewarded with care.

Through our acquisitions and technology investments we have developed innovative solutions that extend beyond our strong foundation in core credit into areas such as marketing, fraud, risk and advanced analytics.

As a result, consumers and businesses can transact with confidence and achieve great things. We call this Information for Good® — and it leads to economic opportunity, great experiences and personal empowerment for millions of people around the world.