At a Glance
- Tasks: Drive engineering excellence and shape the future of retail technology.
- Company: Join Sainsbury’s Tech, a leading multi-channel retailer in the UK.
- Benefits: Flexible working, generous holiday allowance, and private health cover.
- Other info: Mentorship opportunities and a culture of innovation await you.
- Why this job: Influence technology for millions and thrive in a supportive community.
- Qualifications: Deep expertise in modern backend languages and experience in senior engineering roles.
The predicted salary is between 80000 - 100000 £ per year.
Why Join Us At Sainsbury’s Tech, you’ll help power one of the UK’s largest and most-loved multi-channel, multi-brand retailers. As a Principal Engineer, you will drive engineering excellence, shape modern technology standards, and influence the future of retail technology for millions of customers. You’ll work in a supportive, inclusive, and collaborative engineering community—one that values experimentation, innovation, and evidence-based decision making. If you’re passionate about modern engineering practises and want the freedom to explore, lead, and deliver at scale, this is the place to thrive.
What You’ll Do
- Setting and evolving engineering strategy, standards, and best practises across your domain.
- Influencing innovation, modern ways of working, and technical direction across engineering teams.
- Leading by example through deep technical expertise, supporting Staff Engineers and teams to deliver scalable, high-performance technology solutions.
- Guiding engineers and senior leaders with expert insight on technical risk, impact assessment, and prioritisation.
- Designing and overseeing the delivery of large-scale, high-availability systems using cutting-edge technologies.
- Driving the adoption and continuous improvement of engineering practises, using data and evidence to support decision-making.
- Leverage AI and intelligent automation to modernise our systems, streamline decision making, and ensure the organisation remains future fit in a rapidly evolving technology landscape.
- Shaping engineering culture by developing talent, mentoring engineers, and contributing to a thriving community of practise.
Essential Criteria
- Technical Excellence
- Deep hands-on expertise in at least one modern backend language (e.g., Java, .NET, Golang, Node.js, Python, Kotlin).
- Strong understanding of engineering ecosystems, software architectures, and scalable system design.
- Experience leading the development of complex, high-performance, distributed systems.
- Proven ability to define, evolve, and govern technical standards and engineering best practises.
- Leadership & Influence
- Proven experience in a senior or principal engineering role within a modern technology organisation.
- Proven ability to influence engineering strategy and shape technology direction across multiple teams or domains.
- Experience working with Senior Engineering Managers and technical leaders to guide engineering vision and delivery.
- Ways of Working
- Strong advocate for agile methodologies and modern engineering practises.
- Proven ability to build collaborative, inclusive relationships across engineering communities.
- Comfortable making data-driven decisions and evaluating trade-offs at scale.
- Culture & Mentorship
- Strong experience developing colleagues, mentoring engineers at all levels, and contributing to engineering culture.
- Passion for innovation, continuous improvement, and enabling others to succeed.
Why Sainsbury’s Tech?
- Influence technology used by millions of customers every day.
- Freedom to innovate, experiment, and drive real change.
- Supportive engineering community and career-long development.
- Be part of shaping the future of retail technology.
What’s in It for You
- Flexible working with a balanced approach to home and office.
- Colleague discounts across Sainsbury’s, Argos and Habitat.
- Private health cover.
- Generous holiday allowance.
- Bonus scheme.
- Car allowance.
- Pension plan.
- Discounts on gyms, restaurants, holidays, retail and more.
Principal Engineer employer: 慨正橡扯
At Sainsbury’s Tech, we pride ourselves on being an exceptional employer that empowers our Principal Engineers to shape the future of retail technology. Our inclusive and collaborative work culture fosters innovation and experimentation, while offering extensive career development opportunities and a supportive engineering community. With flexible working arrangements, generous benefits, and the chance to influence technology used by millions, Sainsbury’s Tech is the ideal place for passionate engineers to thrive.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Engineer
✨Tip Number 1
Network like a pro! Reach out to current employees at Sainsbury’s Tech on LinkedIn or through industry events. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.
✨Tip Number 2
Show off your skills! Prepare a portfolio or a GitHub repository showcasing your projects and contributions. When you get the chance to chat with hiring managers, having tangible examples of your work can set you apart from the crowd.
✨Tip Number 3
Be ready for technical challenges! Brush up on your coding skills and be prepared to tackle some real-world problems during interviews. Practising common algorithms and system design questions can help you shine in those technical assessments.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the Sainsbury’s Tech family.
We think you need these skills to ace Principal Engineer
Some tips for your application 🫡
Show Your Passion:Let us see your enthusiasm for modern engineering practices! Share examples of how you've driven innovation and excellence in your previous roles. We love to see candidates who are genuinely excited about shaping the future of technology.
Tailor Your Application:Make sure to customise your CV and cover letter to highlight your experience with backend languages and scalable systems. We want to know how your skills align with our needs, so don’t hold back on showcasing your technical expertise!
Be Data-Driven:Since we value evidence-based decision making, include any metrics or data that demonstrate your impact in previous positions. Whether it’s improving system performance or leading successful projects, numbers can really make your application stand out!
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re keen to join our supportive and collaborative community!
How to prepare for a job interview at 慨正橡扯
✨Know Your Tech Inside Out
As a Principal Engineer, you’ll need to showcase your deep expertise in modern backend languages. Brush up on your knowledge of Java, .NET, or whichever language you’re most comfortable with. Be ready to discuss specific projects where you’ve applied this knowledge and how it influenced the outcome.
✨Demonstrate Leadership Skills
Prepare to share examples of how you've influenced engineering strategy in previous roles. Think about times when you led teams or mentored engineers. Highlight your ability to build collaborative relationships and how you’ve shaped technology direction across multiple teams.
✨Showcase Your Problem-Solving Skills
Be ready to discuss complex, high-performance systems you’ve developed. Use the STAR method (Situation, Task, Action, Result) to structure your answers. This will help you clearly convey your thought process and the impact of your decisions on the project.
✨Emphasise Your Passion for Innovation
Sainsbury’s Tech values experimentation and continuous improvement. Share your experiences with adopting new technologies or methodologies. Discuss how you’ve used data to drive decisions and improve engineering practices, showing that you’re not just a follower but a leader in innovation.
