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- Tasks: Lead development on key internal systems using .NET and AWS/Azure.
- Company: Innovative tech organisation with a strong focus on engineering excellence.
- Benefits: Hybrid working, pension, private healthcare, and a culture of inclusivity.
- Why this job: Influence high-level design decisions and tackle large-scale engineering challenges.
- Qualifications: Proven .NET backend experience and leadership skills in tech delivery.
- Other info: Join a global business with clear progression pathways and regular mentoring.
The predicted salary is between 70000 - 95000 £ per year.
MCS are delighted to be partnering with this innovative tech organisation to build a high-performing engineering function. As they enter the next phase of growth, we are looking for a Principal Software Engineer with strong .NET and AWS/Azure expertise to lead development on key internal systems. This is a hands-on leadership role ideal for someone who enjoys mentoring others while architecting and delivering enterprise-scale solutions. You will work across backend systems, CI/CD pipelines, and infrastructure using AWS CDK in Python.
Ideal for someone who:
- Has proven .NET backend experience, ideally in a regulated or finance environment
- Can lead technical delivery while maintaining code quality and system security
- Enjoys shaping infrastructure and delivery processes with tools like AWS and CI/CD platforms
This is a great opportunity to influence high-level design decisions and guide a team in a business committed to engineering excellence.
Why Apply?
This is an opportunity to join a truly global business operating at the intersection of financial markets and cutting-edge tech. You will gain access to a collaborative environment with clear progression pathways, regular mentoring, and meaningful, large-scale engineering challenges.
Benefits:
- Hybrid working in Belfast
- Pension & private health care
- Company with unparalleled growth
- Strong culture of inclusivity and innovation
To speak in absolute confidence about this opportunity, please send an up-to-date CV via the link provided or contact Matthew Rainey at m.rainey@mcsgroup.jobs. Even if this position is not right for you, we may have others that are. Please visit MCS Group to view a wide selection of our current and exclusive roles www.mcsgroup.jobs.
MCS Group is committed to Equality, Diversity, and Inclusion for all, being the first recruitment agency in NI to achieve Bronze Diversity Mark accreditation. If you have a disability which means you require a reasonable adjustment to be considered at any stage of the recruitment process, please contact us and we will endeavour to facilitate the request.
Not all agencies are the same… MCS Group are passionate about providing a first-class service to all our customers and have an independent review rating of 4.9 stars on Google.
4 Dec 2025 BBBH59320 Principal Software Engineer £70000 - £95000 per annum Belfast employer: MCS Group
Contact Detail:
MCS Group Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land 4 Dec 2025 BBBH59320 Principal Software Engineer £70000 - £95000 per annum Belfast
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech industry, especially those who work with .NET and AWS/Azure. A friendly chat can lead to insider info about job openings or even referrals.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those involving backend systems and CI/CD pipelines. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for interviews by brushing up on your leadership and mentoring experiences. Be ready to discuss how you've influenced design decisions and maintained code quality in past roles. Confidence is key!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, we’ve got loads of other exciting roles that might be just right for you.
We think you need these skills to ace 4 Dec 2025 BBBH59320 Principal Software Engineer £70000 - £95000 per annum Belfast
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your .NET and AWS/Azure expertise. We want to see how your experience aligns with the role, so don’t be shy about showcasing your relevant projects and achievements!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you’re excited about this Principal Software Engineer role and how you can contribute to our innovative tech organisation. Keep it engaging and personal!
Showcase Leadership Skills: Since this is a hands-on leadership role, we’d love to see examples of how you’ve mentored others or led technical delivery in the past. Share specific instances where you’ve influenced design decisions or improved processes.
Apply Through Our Website: We encourage you to apply through our website for a smoother application process. It’s the best way for us to receive your application and keep track of all the amazing talent out there!
How to prepare for a job interview at MCS Group
✨Know Your Tech Inside Out
Make sure you brush up on your .NET and AWS/Azure skills before the interview. Be ready to discuss specific projects where you've used these technologies, especially in regulated or finance environments. This will show that you not only have the technical know-how but also understand the nuances of working in such settings.
✨Showcase Your Leadership Skills
Since this role involves mentoring and leading a team, prepare examples of how you've successfully guided others in previous positions. Think about times when you’ve influenced design decisions or improved delivery processes. This will demonstrate your capability to lead and inspire a high-performing engineering function.
✨Understand CI/CD and Infrastructure Tools
Familiarise yourself with CI/CD pipelines and tools like AWS CDK in Python. Be prepared to discuss how you've implemented these in past projects. Showing that you can shape infrastructure and delivery processes will set you apart as a candidate who can contribute to the company's growth.
✨Emphasise Collaboration and Inclusivity
This company values a strong culture of inclusivity and innovation. Be ready to talk about how you've worked collaboratively in diverse teams and contributed to an inclusive environment. Highlighting your commitment to these values will resonate well with their company culture.
