Principal Software Engineer

Elekta; Crawley; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading medical technology company is seeking a Principal Software Engineer to lead the development of advanced control systems software. You will design applications for Radiotherapy Treatment Systems and ensure quality in safety-critical environments. This role offers a hybrid work option and a comprehensive benefits package, including private medical insurance and attractive pension contributions.

Benefits

Hybrid work option

25 paid vacation days

Private Medical Insurance

Attractive Employer Pension Contribution Package

Onsite subsidized restaurant

Qualifications

• Experience in full stack development using C#/.NET and C++.
• Strong understanding of software engineering disciplines and SDLC.
• Ability to mentor and develop team members.

Responsibilities

• Define, design, and maintain applications for the Radiotherapy Treatment System.
• Enhance software quality metrics and perform code testing.
• Lead technical direction and architectural definition.

Skills

Fluent in English

Effective problem-solving skills

Asynchronous programming

Cloud DevOps

Education

Degree in an engineering discipline

Tools

C#/.NET

WPF

C++

Docker

VMware

Job description

Overview

We are seeking a highly experienced Principal Software Engineer to lead the development of advanced control systems software for our state-of-the-art radiotherapy solutions. This role involves designing and evolving a suite of applications, including service tools, factory test software, and interfaces that connect treatment management systems with real-time control software. You will also drive the migration and maintenance of these applications to a modern, containerised microservices platform. As a technical leader within a Scrum team and an Agile Release Train, you will champion best practices in software engineering, ensuring quality and compliance in a safety-critical environment. Your expertise will guide architectural decisions, influence technical strategy, and mentor teams to deliver innovative, reliable solutions that make a real difference in patient care.

What you’ll do at Elekta

• Define, design, develop and maintain applications and the control system for the Elekta Radiotherapy Treatment System (Linac).
• Maintain and enhance software quality metrics including test coverage and code maintainability through code walkthroughs, testing at all levels of the V model and attention to detail. Ensure the code and the system are well tested and of sufficient quality for full solution testing.
• Ensure that all products are developed in accordance with the applicable published development process and that documentation is created in line with this.
• Represent the domain in the safety analysis lifecycle. Participate in safety analysis, raise safety issues and contribute to creation of traceable hazard mitigation.
• Define high level requirements, provide architectural guidance, and contribute to architectural definition.
• Lead the technical direction of product development across teams, domains and release trains.
• Develop a wide breadth of domain knowledge, with expert level knowledge of more than one subsystem.
• Able to focus teams and individuals on delivering technical solutions according to plan.
• Mentor and develop others.

What you get

• Hybrid work option (you are required to work from the Crawley HQ at least 3 days/week)
• Up to 25 paid vacation days (plus bank holidays)
• Holiday Purchase Scheme
• Private Medical Insurance
• Attractive Employer Pension Contribution Package
• Cycle to work scheme
• Life Assurance
• Onsite subsidized restaurant, offering budget-friendly dining
• Love electric (Electric vehicle salary sacrifice scheme)
• SAFe methodologies
• Previous experience of Medical Devices (or other regulated/safety critical areas)
• Real time and Embedded development experience
• Automated testing
• VMware
• Domain Driven Design practices
• Asynchronous programming and event driven systems using Message queues
• Cloud DevOps
• Containerisation (e.g. Docker)
• Fluent in English with strong communication skills
• Effective problem-solving skills
• Structured and professional approach to engineering

What you bring

• Degree in an engineering discipline or equivalent experience
• Full stack development using C#/.NET, WPF platforms and C++ on Windows
• Unit testing and experience of CI/CD
• Object Oriented design
• Knowledge and understanding of software engineering disciplines, practices, and techniques
• Understanding and experience of the overall SDLC for application development
• Asynchronous programming and event driven systems using Message queues
• Understanding and experience of Agile
• We encourage you to apply even if you don\'t meet every requirement—your unique skills and experiences might be exactly what we\'re looking for!