Principal .Net Developer

Instil Software Ltd; Belfast; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading technology solutions provider in Belfast is seeking a Principal .NET Developer to lead the delivery of complex software solutions. This hands-on leadership role requires 8+ years of experience in .NET and C#, as well as expertise in cloud platforms like AWS. The ideal candidate will also possess strong problem-solving skills and a commitment to quality, scalability, and security. Join a recognized and award-winning employer that prioritizes employee wellbeing and development.

Benefits

Discretionary annual performance bonus

Flexible working arrangements

Highly competitive pension scheme

Private healthcare

Employee Assistance Programme

35 days holiday

Learning and development opportunities

Qualifications

• 8+ years of engineering experience with a strong background in .NET and C#.
• Proven experience with cloud platforms (AWS preferred; Azure or GCP considered).
• Hands-on expertise in serverless architectures (Lambda or equivalent).

Responsibilities

• Lead the delivery of complex, high-impact software solutions.
• Set technical direction, guide engineering teams, and ensure quality of projects.
• Influence architecture and drive innovation.

Skills

Engineering experience with .NET and C#

Experience with cloud platforms (AWS preferred)

Hands-on expertise in serverless architectures

Understanding of NoSQL databases

Problem-solving skills

Communication and leadership abilities

Tools

Docker

Kubernetes

Job description

We’re looking for a Principal .NET Developer to lead the delivery of complex, high-impact software solutions. You’ll set technical direction, guide engineering teams, and ensure every project meets the highest standards of quality, scalability, and security. This is a hands‑on leadership role where you’ll influence architecture, mentor others, and drive innovation across the board.

Essential Skills

• 8+ years of engineering experience with a strong background in .NET and C#.
• Proven experience with cloud platforms (AWS preferred; Azure or GCP considered).
• Hands‑on expertise in serverless architectures (Lambda or equivalent).
• Solid understanding of NoSQL databases (e.g., DynamoDB, MongoDB).
• Strong problem‑solving skills and ability to make architectural decisions.
• Excellent communication and leadership abilities.

Desirable Skills

• Familiarity with modern front‑end frameworks (React, Angular, Vue).
• Experience with CI/CD pipelines and DevOps practices.
• Knowledge of microservices and distributed systems.
• Exposure to containerization (Docker, Kubernetes).

Why Join Instil?

At Instil, we believe great work starts with happy, motivated people. That’s why we’ve built a benefits package that supports your wellbeing, growth, and life outside of work, because when you thrive, so do we.

• Recognition That Matters: A discretionary annual performance bonus that rewards your impact and contribution to our success.
• Flexibility Built In: Flexible working arrangements and summer hours, because life isn’t 9 to 5, and balance matters.
• Financial Security: A highly competitive pension scheme with generous employer contributions, private healthcare, and life assurance for peace of mind.
• Health & Wellbeing: Employee Assistance Programme, mental health support, cycle‑to‑work scheme, and regular social events to keep our culture vibrant.
• Time to Recharge: 35 days holiday, enhanced maternity pay, and family‑first policies so you can focus on what matters most.
• Learning Never Stops: From courses to certifications, we’ll invest in your development so you can keep growing and shaping what’s next.
• Community & Culture: Opportunities to volunteer, give back, and be part of initiatives that make Instil a truly inclusive and connected workplace.

And that’s just the start, drop us a note to find out more.

Company Description

Instil has been delivering world‑class software engineering and technology solutions for over 20 years, trusted by global brands to solve complex challenges and drive innovation. From modernising legacy systems to building cutting‑edge applications, we help our clients navigate an ever‑changing digital landscape with confidence and agility.

We’re proud to be an award‑winning employer, reflecting how our people are at the heart of everything we do:

• Recognised as a Great Place to Work® for three consecutive years, and in 2024 ranked in the Top 20 Best Workplaces in the UK for medium‑sized companies.
• Winner of Company of the Year at the Digital DNA Awards 2022, celebrating excellence in Northern Ireland’s tech sector.

Driven by a love for technology and a commitment to excellence, we bring together people who want to make a difference. We’ll support your journey, because your success is part of ours.