Principal Software Engineer

IT Search; Ireland; On-site; EUR 90,000 - 130,000; Full time

Job summary

IT Search is seeking a Principal Software Engineer to shape the technical direction of a mature, business-critical software platform. This hands-on role focuses on architecture, complex problem-solving and performance optimisation, with mentoring of developers and influence over key technical decisions.

You will apply strong C#/.NET skills, lead architectural initiatives, and explore AI tools to enhance development workflows and engineering practices in a collaborative, established software

Qualifications

• Extensive experience with C#, .NET Framework and/or .NET Core.
• Strong knowledge of software architecture, design patterns and scalable, maintainable enterprise applications.
• Advanced SQL Server experience within database-driven systems.
• Expertise in performance profiling, debugging, optimisation and resolving complex technical challenges.
• Experience developing across desktop and web applications within established software products.
• Proven ability to influence architectural decisions, lead complex development initiatives and mentor engineers.
• Interest in AI tools and emerging technologies, with experience applying them to improve development workflows or engineering practices.

Responsibilities

• Shape the technical direction of a mature, business‑critical software platform.
• Influence architectural decisions and drive improvements across the platform.
• Mentor developers and lead complex development initiatives.
• Maintain a hands-on approach focusing on performance optimisation.
• Evaluate and apply AI tools to improve workflows and engineering practices.

Skills

C#

.NET Framework/.NET Core

Software architecture

SQL Server

Performance profiling

Debugging

Desktop & Web apps

Technical leadership

Mentoring engineers

AI tools interest

Tools

DevExpress

WinForms

Redis

MongoDB

Azure DevOps

Job description

Highly competitive salary package with an excellent benefits offering.

I'm working with an established software business looking for a Principal Software Engineer to shape the technical direction of a mature, business-critical software platform.

This is a hands-on engineering role focused on software architecture, complex problem-solving and performance optimisation. You'll influence key technical decisions, drive improvements across the platform and mentor developers, without formal people-management responsibilities.

Technical Requirements

• Extensive experience with C#, .NET Framework and/or .NET Core.
• Strong knowledge of software architecture, design patterns and scalable, maintainable enterprise applications.
• Advanced SQL Server experience within database-driven systems.
• Expertise in performance profiling, debugging, optimisation and resolving complex technical challenges.
• Experience developing across desktop and web applications within established software products.
• Proven ability to influence architectural decisions, lead complex development initiatives and mentor engineers.
• Interest in AI tools and emerging technologies, with experience applying them to improve development workflows or engineering practices.

Desirable:

DevExpress and WinForms experience, alongside exposure to Redis, MongoDB and Azure DevOps.