Senior C# & .NET Engineer — API & Microservices

fulcrumdigital; Dublin; On-site; EUR 65,000 - 90,000; Full time

Job summary

Fulcrum Digital in Dublin, Ireland, is seeking a skilled C#/.NET engineer with 3+ years of experience to design, develop, test, and maintain robust applications across web, desktop, or backend services.

You will work in a collaborative team, contribute to architectural decisions, and mentor junior engineers while staying up-to-date with the latest .NET ecosystem updates. The role emphasizes code quality, tests, and agile delivery.

Qualifications

• Proficient in C# and .NET/.NET Core (3+ years).
• Experience with ASP.NET Core for web APIs or MVC applications.
• Solid understanding of OOP, design patterns, and SOLID principles.
• Proficiency with SQL and relational databases (SQL Server, PostgreSQL).
• Experience with Entity Framework Core or similar ORM frameworks.
• Familiarity with unit testing frameworks (NUnit, xUnit, MSTest).
• Version control using Git (branching strategies, PRs).
• Understanding of REST API design and consumption.

Responsibilities

• Design, develop, test, and maintain C#/.NET applications (web, desktop, or backend services).
• Write clean, efficient, and well-documented code following best practices.
• Participate in architectural discussions and contribute to technical design decisions.
• Collaborate with Product Owners, designers, and QA engineers throughout the SDLC.
• Conduct and participate in code reviews to ensure quality and consistency.
• Identify and resolve performance bottlenecks, bugs, and technical debt.
• Integrate with RESTful APIs, microservices, and third-party systems.
• Work within Agile/Scrum ceremonies (sprint planning, standups, retrospectives).
• Mentor junior engineers and contribute to a culture of continuous improvement.
• Stay current with emerging technologies and .NET ecosystem updates.

Skills

C# / .NET

ASP.NET Core

OOP & SOLID

REST APIs

SQL Databases

Unit Testing

Git

Agile / Scrum

Tools

EF Core

Job description

Fulcrum Digital in Dublin, Ireland, is seeking a skilled C#/.NET engineer with 3+ years of experience to design, develop, test, and maintain robust applications across web, desktop, or backend services.

You will work in a collaborative team, contribute to architectural decisions, and mentor junior engineers while staying up-to-date with the latest .NET ecosystem updates. The role emphasizes code quality, tests, and agile delivery.