Senior .NET/C# Developer

Mid Level .NET/C# Developer

Location: Cork, Ireland (Hybrid working arrangement)
Position: Permanent | Full Time

Salary: €50,000 – 65,000

Company Overview

An established technology services firm with experience in supporting global clients in navigating the digital-first world. The successful candidate will join a high-performance team delivering robust application solutions and working across a broad range of technologies and client environments.

Position Summary

As a Software Developer specialising in .NET/C#, you will work closely with customers to maintain, enhance and modernise applications—taking on both hands-on technical development and consultancy elements. You will have the opportunity to influence technical direction, work with modern architectures, support legacy transformation, and further develop your professional skillset.

Key Responsibilities

• Design, implement and support business applications using C# and the .NET ecosystem (for example .NET 6/7, ASP.NET Core).
• Create, optimise and maintain backend services, APIs and microservices architectures.
• Write clean, robust and well-tested code, with a focus on unit testing, integration testing and continuous integration/deployment (CI/CD) practices.
• Work on data-intensive features: large data transforms / integrations, data service extracts, reporting, messaging bus systems.
• Help modernise legacy applications: refactoring older .NET codebases, migrating to modern frameworks and cloud/environments as appropriate.
• Collaborate with multi-disciplinary teams (product, UX, DevOps) to deliver high-quality solutions.
• Develop and maintain best-practice documentation and contribute to evolving architectural/engineering guidelines.

Required Qualifications & Experience

• Proven experience developing in C#/.NET and ASP.NET (Core or Framework).
• Strong experience with SQL development.
• Experience with JavaScript frameworks or libraries (front-end or full-stack integration).
• Experience building microservices, or working in distributed systems (service-oriented, message bus, orchestration).
• Proven experience of large-scale data transformations, data service extracts and reporting.
• Familiarity with message bus systems or multi-bus messaging architectures.
• Experience with CI/CD pipelines, unit testing and automated testing.
• Good knowledge of the Microsoft technology stack (e.g., Visual Studio, Azure or on-premise Microsoft stack).
• Ability to play a senior role in the team: provide guidance, handle escalations, influence direction.

Preferred / Desirable

• Experience with cloud platforms (Azure, AWS) or hybrid cloud infrastructure.
• Experience modernising legacy systems (migrations, re-architecting for microservices).
• Experience with orchestration frameworks (e.g., Kubernetes, Azure Service Fabric) or containerisation.
• Exposure to DevOps practices, infrastructure as code (IaC), and observability/monitoring tools.

Benefits

• Quarterly performance-related profit share scheme.
• Strong career progression programme with mentorship.
• Flexible/remote working policy, with work-life balance support.
• Pension, private healthcare cover, life assurance, employee discounts.
• Well-being schemes (gym discounts, bike-to‐work, mindfulness, etc).
• Educational support: incentives for certifications (Microsoft, AWS, Oracle, etc).
• Enhanced leave policies (maternity/paternity, special leave, etc).

If you’re interested, please click below to apply. Any Questions? – Contact Joseph Mullan in Reperio Human Capital

Reperio Human Capital acts as an Employment Agency and an Employment Business.