> Markdown version of [/jobs/ext/2140898-lead-principal-engineer](https://www.wearedevelopers.com/jobs/ext/2140898-lead-principal-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead Principal Engineer - **Company:** Sainsbury’s Group - **Location:** London, UK - **Experience:** Expert - **Salary:** £78,780.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Cloud Computing, Continuous Integration, Software Engineering, Software Security, Mttr, Technical Debt, Containerization, Infrastructure Automation Frameworks - **Published:** August 20, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5848138978 ## About the Role * Proven experience operating as a Principal Engineer, Distinguished Engineer, Chief Engineer, Engineering Director or equivalent senior technical leadership role within a large-scale technology organisation. * Deep understanding of software engineering, architecture, cloud-native technologies and modern technology platforms. * Strong track record of establishing and evolving engineering standards, governance and technical best practices. * Experience leading, coaching and developing highly experienced engineering leaders, including Principal and Staff Engineers. * Expertise in Agile, Lean and modern product engineering approaches at scale. * Ability to influence senior stakeholders and drive organisational change through technical leadership. * Exceptional communication skills with the ability to translate complex technical concepts for executive and non-technical audiences. * Strong technical judgement with the ability to make complex cross-domain decisions that balance risk, innovation, delivery and long-term sustainability. * Passion for engineering excellence, inclusion, talent development and creating high-performing engineering cultures. Desirable * Experience within large-scale retail, e-commerce or customer-facing digital organisations. * Knowledge of engineering practices across complex multi-channel technology environments. * Experience leading enterprise-wide engineering transformation and capability uplift initiatives. ## Description Working at the intersection of technology strategy, engineering practice and organisational leadership, you'll act as a trusted advisor to senior technology leaders while fostering a culture of engineering excellence across the organisation. What You'll Be Doing Drive Engineering Excellence & Technical Leadership * Provide senior technical leadership across engineering teams, raising the bar on quality, standards and modern engineering practices. * Define, evolve and champion engineering standards, ensuring consistent adoption and measurable improvements in engineering maturity. * Act as the senior escalation point for complex technical challenges and significant technology decisions. * Lead the evolution of software engineering practices across architecture, security, cloud platforms and delivery. Lead and Grow the Engineering Community * Line manage and support our Principal Engineers, creating alignment across engineering standards, technology choices and ways of working. * Coach Principal Engineers, Staff Engineers and engineering leaders to accelerate capability, technical mastery and organisational impact. * Own and evolve the engineering competency framework and career pathways. * Shape engineering workforce strategy, succession planning and talent development. * Oversee engineering recruitment standards and assessments across C4-C6 engineering levels. Shape Strategy and Practice Evolution * Define and influence engineering strategy aligned to organisational objectives and long-term technology vision. * Partner with Directors of Engineering, Heads of Engineering and senior technology leaders to continuously evolve engineering practices and team structures. * Develop and execute a multi-year roadmap for engineering maturity, tooling, standards and ways of working. * Ensure engineering decisions balance delivery outcomes, technical debt and long-term sustainability. Champion High-Performance Engineering * Drive adoption of Agile and Lean engineering principles at scale. * Coach teams on flow-based metrics, including cycle time, throughput and MTTR. * Lead improvements across CI/CD, automation, testing, infrastructure as code and secure software delivery. * Embed evidence-based decision making through engineering performance and operational metrics. ## Related Videos - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Green Cloud Computing](https://www.wearedevelopers.com/videos/592-green-cloud-computing) - [Resolving technical debts in software architecture](https://www.wearedevelopers.com/videos/1680-resolving-technical-debts-in-software-architecture) - [What Developers Get Wrong About Application Quality](https://www.wearedevelopers.com/videos/233-what-developers-get-wrong-about-application-quality) - [Leading with Reliability: Applying SRE Principles to Build Stronger Engineering Organizations](https://www.wearedevelopers.com/videos/100185-leading-with-reliability-applying-sre-principles-to-build-stronger-engineering-organizations) - [Why Your Best Mediors Never Become Seniors (And How to Fix It)](https://www.wearedevelopers.com/videos/2108-why-your-best-mediors-never-become-seniors-and-how-to-fix-it) ## Related Articles - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Software Engineer Salary in The UK](https://www.wearedevelopers.com/magazine/231-software-engineer-salary-in-the-uk) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)