We are looking for an experienced Senior .NET Developer (C#) to join the Acquisitions & Originations engineering team within Experian's Credit & Verification Services business.
The Domain
The Acquisitions & Originations team develops and provides level 3 support for the Delphi Select and Evaluate platforms, which are used across the Acquisitions and Originations business. These are complex, configuration-driven, multi-client systems: each client (bank, lender or other financial institution) runs its own decisioning strategies, rules and data configurations on a shared codebase.
Clients depend on these systems to make real-time lending and origination decisions, so reliability, data integrity and controlled release processes are central to the role.
This is a hybrid, Nottingham based role (40% in the office) reporting to the Lead Developer.
Key Responsibilities
- Own features end-to-end across the full software development lifecycle: requirements analysis, technical design, development, unit and integration testing, code review, deployment and post-release support.
- Design, develop and maintain scalable, maintainable C#/.NET services and components within a complex, multi-client system, ensuring changes are safe across all client configurations.
- Translate high-level and client-specific requirements into robust technical designs, in collaboration with the Technical Lead, Architects, Business Analysts and Product Owners.
- Maintain and improve automated test coverage (unit, integration and regression) to support safe, frequent releases into a live multi-client platform.
- Contribute to and help evolve CI/CD pipelines (Git, Jenkins)
- Identify and help remediate technical debt, and contribute to ongoing modernisation of the platform, including its migration towards cloud-native (AWS) architecture.
- Mentor Intermediate and Junior developers, sharing technical knowledge and supporting their growth, including in the effective use of AI-assisted development tools.
Required Skills / Knowledge
- Strong expertise in .NET Core / .NET Framework and C#, including object-oriented design and common design patterns.
- Proven experience across the full software development lifecycle, ideally supporting a live, business-critical production system.
- Solid experience with SQL Server / T-SQL, including writing and optimising queries and stored procedures against production data.
- Experience designing and consuming RESTful APIs, and working with service-oriented or microservice architectures.
- Practical experience with unit and integration testing frameworks (e.g. xUnit, NUnit or MSTest).
- Experience with version control and CI/CD tooling (e.g. Git, Jenkins, or equivalent).
- Direct experience working in a Scrum or other Agile team, including sprint planning, stand-ups and retrospectives.
- Hands-on, everyday experience using AI-assisted development tools (e.g. GitHub Copilot, Cursor, Claude, ChatGPT) for tasks such as code generation, refactoring, test writing, debugging and documentation
Useful Skills (beneficial, not mandatory)
- Exposure to AWS services (e.g. DynamoDB, S3, EC2 ) or a strong interest in developing cloud skills as the platform migrates to AWS.
- Experience with Infrastructure as Code (e.g. Terraform, CloudFormation).
- Knowledge of containerisation (Docker, Kubernetes).
- Experience in financial services, lending, credit decisioning or a similarly regulated domain.
- Exposure to front-end technologies such as React or modern JavaScript/TypeScript.
- Experience working with configuration-driven or rules-engine-based systems.
Benefits include:-
- Great compensation package and discretionary bonus plan
- Core benefits include pension, bupa healthcare, sharesave scheme and more!
- 25 days annual leave with 8 bank holidays and 3 volunteering days. You can also purchase additional annual leave.
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