Senior / Lead .NET Developer - (Contract & Perm)

Solas IT Recruitment; Dublin; On-site; EUR 90,000 - 130,000; Full time

Job summary

Solas IT Recruitment is seeking a Senior / Lead .NET Developer to lead technical direction, design scalable cloud-native systems, and shape architecture across teams. You will mentor engineers and drive best practices in distributed microservices environments.

Working with .NET Core (C#), distributed systems, and message-driven design, you will define architecture, review code, and help deliver high-impact solutions while maintaining quality and performance.

Qualifications

• Third level Degree in Computer Science, IT, or equivalent practical experience.
• 6+ years commercial experience in .NET / C#.
• Deep expertise with .NET Core (C#) and modern backend development.
• Strong experience designing and working with message-based distributed systems.
• Proven experience building or working within microservices architectures.
• Excellent understanding of software design principles and architectural patterns.
• Experience applying industry best practices for application architecture and coding standards.
• Ability to contribute to innovative technical solutions and architectural direction.

Responsibilities

• Lead the design and development of scalable, high-performance applications using .NET Core (C#).
• Define and evolve system architecture with a focus on microservices and distributed systems.
• Drive best practices in software design, architecture, and engineering standards.
• Provide technical leadership, mentoring, and guidance to development teams.
• Contribute to architectural decisions, solution design, and technical strategy.
• Ensure systems are resilient, observable, and maintainable in production environments.
• Work closely with cross-functional teams to deliver innovative, high-quality solutions.
• Participate in code reviews, technical design sessions, and continuous improvement initiatives.
• Troubleshoot complex production issues and provide long-term solutions.

Skills

.NET/C# expertise

.NET Core (C#)

Microservices architecture

Distributed systems design

Software design principles

Architectural patterns

Mentoring / leadership

Cloud-native development

Education

Bachelor's degree in Computer Science or equivalent

Job description

We are seeking an experienced Senior / Lead .NET Developer to take a key technical leadership role in the design, development, and evolution of modern, distributed software systems. This position is ideal for someone who not only writes excellent code but also shapes architecture, mentors engineers, and drives best practices across teams.

You will work on high-impact, cloud-native platforms built on .NET Core, with a strong emphasis on distributed systems, microservices architecture, and message-driven design.

Key Responsibilities

• Lead the design and development of scalable, high-performance applications using .NET Core (C#)
• Define and evolve system architecture with a focus on microservices and distributed systems
• Drive best practices in software design, architecture, and engineering standards
• Provide technical leadership, mentoring, and guidance to development teams
• Contribute to architectural decisions, solution design, and technical strategy
• Ensure systems are resilient, observable, and maintainable in production environments
• Work closely with cross-functional teams to deliver innovative, high-quality solutions
• Participate in code reviews, technical design sessions, and continuous improvement initiatives
• Troubleshoot complex production issues and provide long-term solutions

Required Experience & Skills

• Third level Degree in Computer Science, IT, or equivalent practical experience
• 6+ years commercial experience in .NET / C#
• Deep expertise with .NET Core (C#) and modern backend development
• Strong experience designing and working with message-based distributed systems
• Proven experience building or working within microservices architectures
• Excellent understanding of software design principles and architectural patterns
• Experience applying industry best practices for application architecture and coding standards
• Ability to contribute to innovative technical solutions and architectural direction
• Comfortable working under pressure and to tight deadlines
• Self-motivated, proactive, and able to lead by example
• Strong collaboration skills and ability to work effectively within a team environment

Nice to Have (Experience with some of the following)