Senior Principal Engineer

JR United Kingdom; Doncaster; On-site; GBP 80,000 - 120,000; Full time

Job summary

A leading global eCommerce company seeks a Senior Principal Engineer to lead their architectural transformation. This role involves defining technical strategy, mentoring staff engineers, and closely collaborating with product and engineering teams to enhance delivery. The position calls for strong leadership in driving complex technical changes within a highly successful business.

Qualifications

• Proven experience leading complex technical transformations in eCommerce or marketplace environments.
• In-depth knowledge of software engineering with a focus on architectural leadership.
• Strong knowledge of distributed systems, microservices, and cloud architecture.

Responsibilities

• Define and own the architectural roadmap aligned with business growth.
• Guide the transition to a modern, microservices-based cloud platform.
• Act as a mentor to 3 Staff Engineers, supporting their career growth.

Skills

Communication

Leadership

Influencing skills

Job description

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Senior Principal Engineer – Own the Architectural Roadmap | B Corp

Are you a Senior Principal Engineer with a passion for defining technology roadmaps to deliver business growth? Are you a commercially minded technology leader capable of strategic decision-making while working at a ‘hands-on’ level with engineering teams?

Senior Principal Engineer - A mission-driven global eCommerce company is undergoing a major technical transformation and is looking for a Senior Principal Engineer to help shape the future of its technology landscape. Operating in over 190 countries, this B-Corp certified organisation champions sustainability and circular economy principles, combining purpose with performance, making a genuine social and environmental impact. They are embarking on a strategic pivot towards Direct-to-Consumer (D2C) growth and are looking for a hands-on, strategy-led architecture leader to join the Senior Leadership Team.

The Role:

As Senior Principal Engineer, you’ll define and own the architectural roadmap, shaping tech strategy across software, infrastructure, data, and security. Reporting directly to the CPTO, you’ll play a key role in modernising and unifying a fragmented technical landscape, building towards a scalable, cloud-native future. You will need to be comfortable taking pragmatic decisions, fixing foundations while driving growth and balancing the long-term vision with short-term business outcomes.

This is a unique opportunity to shape the architectural vision while remaining close to delivery, partnering with Engineering, Product, and the broader SLT.

What will the Senior Principal Engineer Do?

• Reporting to the CPTO as part of the SLT, you will create and evolve a pragmatic architectural roadmap aligned with business growth.
• Evaluated and rationalise the existing technical landscape and guide the transition to a modern, distributed, microservices-based cloud platform, reducing technical debt while designing new solutions to drive business growth..
• Implement architectural governance and ensure consistency across teams.
• Collaborate closely with Product and Engineering leaders to align technology with commercial priorities.
• Embed yourself within Product teams to understand their challenges and implement engineering best practices to improve speed and quality of delivery.
• Act as mentor to 3 Staff Engineers, guiding their performance and supporting their growth.

Who is the Senior Principal Engineer?

• Proven experience leading complex technical transformations, ideally in eCommerce, marketplace, or complex platform environments.
• In-depth knowledge of software engineering, including architectural leadership and best practice.
• Strong knowledge of distributed systems, microservices, and cloud architecture.
• Excellent communication and influencing skills, with a commercial mindset.
• Experience in high-growth, change-heavy organisations.
• Ability to balance short-term execution with long-term tech strategy.

This is an amazing opportunity for a Senior Principal Engineer to own the architectural roadmap in a major technical transformation for a highly successful business. Please reply with your CV or call Simon for a chat.

Senior Principal Engineer – Own the Architectural Roadmap | B Corp