Senior .NET Platform Modernization Engineer (Hybrid)

Stelfox Tech Recruitment; Ireland; Hybrid; EUR 90,000 - 120,000; Full time

Job summary

Stelfox Tech Recruitment partners with a Fintech provider in Cork City undergoing a product and platform modernisation. You will work on legacy .NET systems, migrating towards modern architecture with AI-assisted development support.

We seek expert-level .NET/C# developers with Azure cloud experience, SQL Server, API design, testing, and strong CI/CD practices to deliver scalable solutions in a hybrid Cork-based role.

Qualifications

• Expert-level experience with .NET / C#, deep understanding of async/await, DI, clean architecture and domain modeling.
• Cloud-native development on Azure (AWS/GCP transferable).
• Database design, optimization and migration strategies for high-volume systems.

Responsibilities

• Contribute to a platform modernisation by building parallel solutions alongside live systems.
• Design scalable, versioned APIs with backward compatibility and robust testing.
• Deliver CI/CD pipelines and automate deployments to production.

Skills

.NET / C#

Async/await

Dependency Injection

Clean Architecture

Domain Modeling

Azure Cloud

SQL Server

CI/CD

API Design

Testing Strategies

Tools

Azure DevOps

Git

Visual Studio

SQL Profiler

Entity Framework

Job description

Stelfox Tech Recruitment partners with a Fintech provider in Cork City undergoing a product and platform modernisation. You will work on legacy .NET systems, migrating towards modern architecture with AI-assisted development support.

We seek expert-level .NET/C# developers with Azure cloud experience, SQL Server, API design, testing, and strong CI/CD practices to deliver scalable solutions in a hybrid Cork-based role.