Principal Software Engineer

MHR; Ruddington; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Access to 60+ training courses

GP & mental health support

Extra holiday days option

Family leave enhancements

MHRewards discounts

Employee recognition program

Referral bonus up to £2000

Social clubs & activities

On-site subsidised restaurants

Private medical & dental options

Job summary

MHR is seeking a Principal Software Engineer to lead complex engineering challenges and shape the product's technical direction. You will operate across the organization, defining strategy, influencing architecture, and guiding delivery in a modern SaaS environment.

Experience with Microsoft technologies (.NET, Azure), cloud-native design, distributed systems, and test-driven development is required. You will champion AI-assisted development to improve efficiency, quality, and innovation,

Qualifications

• Strong experience with Microsoft technologies (.NET, Azure) and modern engineering practices.
• Expertise in scalable architecture and cloud-native systems.
• Proven ability to deliver technical strategy and complex initiatives.

Responsibilities

• You will define and execute technical strategy and shape scalable architecture.
• Lead cross-functional Agile teams and mentor engineers to raise technical standards.
• Drive engineering excellence through best practices, including AI-assisted tooling.
• Align priorities across teams, mitigate risks, and ensure high-quality delivery.

Skills

Microsoft .NET

Azure

Cloud-native design

Distributed systems

Test-driven development

AI-assisted engineering

Mentoring

Stakeholder communication

Architectural leadership

Job description

Join MHR as a Principal Software Engineer, leading complex engineering challenges that shape our products and technical direction.

In this role, you will operate across the organisation—defining strategy, influencing architecture, and guiding delivery within a modern SaaS environment. Drawing on experience with Microsoft technologies such as .NET and Azure, you’ll apply modern programming practices including cloud‑native design, distributed systems, and test‑driven development.

You will also champion AI‑assisted development to improve engineering efficiency, quality, and innovation. This is a high‑impact position combining hands‑on expertise with technical leadership and mentoring.

Your Team

You’ll work across cross‑functional Agile teams, partnering closely with engineers, architects, and stakeholders.

Through influence rather than authority, you’ll help align teams and foster a collaborative, inclusive culture focused on continuous improvement.

Your Impact

This role will see you defining and executing technical strategy, shaping scalable, resilient architecture aligned with business goals.

You’ll drive engineering excellence through best practice, embedding test‑driven development and using AI‑assisted tooling to enhance delivery. Working across teams, you’ll help align priorities, mitigate risks, and ensure consistent, high‑quality outcomes, while mentoring engineers to strengthen capability.

As a trusted technical leader, you’ll balance long‑term vision with delivery outcomes.

What you’ll bring to the role and MHR

• Strong experience with Microsoft technologies (.NET, Azure) and modern engineering practices
• Expertise in scalable architecture and cloud‑native systems
• Proven ability to deliver technical strategy and complex initiatives
• Advocate of TDD, continuous improvement, and AI‑assisted engineering
• Strong collaboration and stakeholder communication skills
• Experience mentoring engineers and raising technical standards

Benefits to support you personally and professionally

• Access to over 60 internal training courses, professional qualifications, and cross‑departmental mentoring and coaching programs
• 24/7 access to a GP through Help at Hand for you and your family, confidential mental health support, and paid sick leave
• Ability to purchase or sell additional holiday days beyond 25 days and bank holidays
• Enhanced Family leave
• My MHRewards offering discounts at over 900 retailers
• Monthly employee recognition program and departmental awards
• Referral bonus scheme of up to £2,000
• Employee‑led social events such as running clubs, football teams, book clubs, and bake‑offs
• On‑site subsidised restaurants offering a variety of fresh meals daily
• Opt‑in benefits schemes such as private medical insurance and dental coverage

If we receive an exceptionally high volume of applications, we reserve the right to close this vacancy earlier than originally advertised.