Principal Software Engineer

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.

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