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Photon

Principal Engineer - Javascript - London

Sorry, this job was removed at 11:25 a.m. (GMT) on Tuesday, Sep 01, 2026
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Position Overview: An exciting opportunity for a forward-thinking full stack engineer who thrives on producing customer-facing web and app experiences. You will join a leading name in the food and beverage market with 500+ stores across the world. As a full stack Principal Engineer specialising in JavaScript, you will be responsible for driving technical excellence and innovation within your product team. You will lead by example, playing a hands-on role in designing, building, and maintaining front-end and back-end systems. Additionally, you will impart your knowledge and coach others fostering a culture of continuous learning and collaboration.

Responsibilities:

  • Architect and develop scalable and performant mission critical web applications using Next.js for front-end and Node.js for API development.
  • Mentor a team of engineers, providing guidance on best practices, design patterns, and coding standards.
  • Drive a culture of quality and innovation, advocating Extreme Programming ways of working.
  • Collaborating with cross-functional teams, participating in Agile processes and code reviews.
  • Utilise strong debugging skills to troubleshoot and resolve complex issues in both front-end and back-end systems (including both internal and third-party systems)
  • Experience working on cloud platforms, with knowledge of Google Cloud Platform (GCP) being an advantage.
  • Familiarity with e-commerce platforms and solutions is highly desirable.
  • Stay abreast of emerging technologies and industry trends, evaluating their potential impact on the product roadmap and development processes.
  • Champion continuous improvement, performance optimisation, and security throughout the development lifecycle

Skills:

  • Proven experience as a hands-on engineer with proficiency in JavaScript, React, TypeScript, and Next.js for front-end and Node.js for back-end development.
  • Experience in technical decision making guiding the team to propose solutions which implement standard mythologies so that a maintainable product is produced.
  • Strong leadership skills with the ability to inspire and mentor other engineers.
  • Experience working in the Quick Service Restaurant (QSR), Retail, or E-commerce industries is a plus.
  • Excellent problem solving and communication skills.
  • You have a passion for automation tested code and setting high standards for code quality.
  • Be a keen team player with strong interpersonal skills.
  • Ability to thrive in a fast-paced, dynamic environment and drive change through innovation and collaboration.

Location: Hybrid – 2 days per week in our London office


HQ

Photon London, England Office

London, United Kingdom

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