Senior .NET Developer

Location: Dublin 1, Ireland (Hybrid, 2 - 3 days onsite, remainder remote.)

Day Rate: €550 per day

Work Eligibility: Candidates must possess an Irish/EU passport or a valid work permit for full-time work in the Republic of Ireland.

Contract Duration: 6 months, scope to extend.

Overview

A major organisation in Dublin City Centre is undergoing a large-scale digital transformation programme, placing technology at the core of its operations. The Development Team, within the Technology Solutions Group, is delivering modern, scalable software systems that support public-facing services — including financial services, mobile apps, payments, and customer communications. These systems process over 130 million transactions annually.

We're seeking a Senior Developer to join this transformation. You’ll work on high-impact, project-based initiatives, collaborating with architects, DevOps, testers, and stakeholders to deliver secure, performant applications and APIs using the Microsoft technology stack.

Key Responsibilities

• Design, develop, and maintain scalable applications and services using C# and .NET Core.
• Develop RESTful APIs and backend services for enterprise-grade solutions.
• Collaborate closely with solution architects and other developers to implement technical designs.
• Participate in Agile ceremonies, including sprint planning and daily stand-ups.
• Write clean, testable code following SOLID principles and modern design patterns.
• Work with Azure DevOps and Git for source control, CI/CD pipelines, and build automation.
• Develop and optimize SQL Server queries, stored procedures, and schema.
• Contribute to the development of automated unit tests and support quality assurance.
• Write technical documentation to support system maintenance and knowledge sharing.

Required Skills & Experience

• Minimum 7 years of hands-on software development experience.
• Expertise in C# .NET Core and the Microsoft technology stack.
• Strong experience with RESTful API development using Web API.
• Solid understanding of relational databases (SQL Server) and ORM tools like Entity Framework.
• Experience with Azure cloud services, such as:
• Azure Web Apps
• Azure SQL
• Azure Functions
• Azure Data Factory (a plus)
• Familiarity with CI/CD tools and automated pipelines (Azure DevOps, GitHub Actions, etc.).
• Comfortable working in Agile environments (Scrum/Kanban).
• Strong knowledge of object-oriented programming, design patterns, and SOLID principles.

Desirable Experience

• Exposure to SAP CDC, PCI DSS, or other compliance standards.
• Experience writing or maintaining Terraform scripts or ARM templates.
• Familiarity with unit testing frameworks and best practices in test automation.
• Experience managing or contributing to large Git repositories in a collaborative team environment.

Key Technologies in Use

• Languages: C#, .NET Core, JavaScript/TypeScript (frontend optional)
• Frameworks: ASP.NET Core, Web API
• Cloud: Microsoft Azure (App Services, Functions, SQL, Data Factory)
• DevOps: Azure DevOps, GitHub, Jira
• Databases: SQL Server, Entity Framework
• Tools: Visual Studio, Postman, Docker (optional), Terraform (desirable)

If you're a hands-on, senior-level developer looking to work on high-impact systems with cutting-edge technology in a large-scale transformation, we’d love to hear from you.