Experian is a global data and technology company, powering opportunities for people and businesses around the world. We help to redefine lending practices, uncover and prevent fraud, simplify healthcare, create digital marketing solutions, and gain deeper insights into the automotive market, all using our unique combination of data, analytics and software. We also assist millions of people to realise their financial goals and help them to save time and money.

We operate across a range of markets, from financial services to healthcare, automotive, agrifinance, insurance, and many more industry segments.

We invest in people and new advanced technologies to unlock the power of data and to innovate. A FTSE 100 Index company listed on the London Stock Exchange (EXPN), we have a team of 23,300 people across 32 countries. Our corporate headquarters are in Dublin, Ireland. Learn more at experianplc.com.

Reporting to the Software Development Manager, we're looking for a senior backend software developer with expertise in designing and maintaining scalable .NET applications.

You'll have opportunity to:

• Lead design and architecture discussions for complex backend systems
• Mentor junior and mid-level developers, promoting best practices in coding and testing
• Manage critical components of the application lifecycle, from design through deployment
• Evaluate and introduce new technologies to improve scalability, maintainability, and performance
• Collaborate with product owners and partners to influence technical direction and ensure agreement on team goals

• Expert-level proficiency in .NET Core 8.0, C# 12+, and ASP.NET
• Experience with microservice architecture, distributed systems, and event-driven design
• Design and implement secure APIs and enforce best practices for authentication and authorization
• Experience profiling and optimizing large-scale applications (millions of transactions daily)
• Familiarity with DRY, SOLID, and clean architecture principles
• Experienced with unit testing frameworks like XUnit and Moq
• Familiar with API testing tools like Postman or Insomnia
• Familiar with MongoDB or other NoSQL database systems
• Familiar with observability tools such as Dynatrace and CloudWatch
• Comfortable with Git for version control
• Comfortable working in both Windows (PowerShell) and Linux (bash scripting) environments
• Hands-on experience with cloud-native architectures and AWS services (S3, Lambda, EC2, and EKS)
• Experience with containerization and orchestration (Kubernetes)
• Knowledge of data exchange standards (X12, HL7) and ability to design data pipelines
• Experience with gRPC or other RPC frameworks
• Experience with static code analysis tools (SonarCloud)
• Familiar with modern CICD tools (GitHub Actions, Azure DevOps, Bamboo, Octopus)
• Familiar with Windows UI frameworks like Winforms or WPF

Benefits/Perks:

• Great compensation package and bonus plan
• Core benefits including medical, dental, vision, and matching 401K
• Flexible work environment, ability to work remote, hybrid or in-office
• Flexible time off including volunteer time off, vacation, sick and 12-paid holidays
• Explore all our exciting benefits here: https://yourexperianbenefits.com/cand-index.html

At Experian, our people and culture set us apart. We're deeply committed to creating an environment where everyone feels they belong and can excel. From inclusion and authenticity to work/life balance, development, wellness, collaboration, and recognition, we focus on what truly matters. Our people-first approach has earned us global recognition: World's Best Workplaces™ 2024 (Fortune Top 25), Great Place To Work™ 2025 in 26 countries, and Glassdoor Best Places to Work 2024, among others.

Want to see what life at Experian is really like? Explore Experian Life on social or visit our careers site.

Our compensation reflects the cost of labor across several U.S. geographic markets. The base pay range for this position is listed above. Within this range, individual pay is determined by work location and additional factors such as job-related skills, experience, and education. You will be also eligible for a variable pay opportunity.

Experian is proud to be an Equal Opportunity Employer for all groups protected under applicable federal, state and local law, including protected veterans and individuals with disabilities. If you have a disability or special need that requires accommodation, please let us know at the earliest opportunity.