Principal Engineer / Technical Lead, MarTech - Arc IT Recruitment : Job Details

Principal Engineer / Technical Lead, MarTechLondon / Hybrid Workingto £130,000 + Excellent BenefitsOutstanding opportunity for a Principal Engineer with the PERN stack (PostgreSQL, Express, React, Node.js) and significant Martech or Adtech experience to join one of the UK’s top online marketplaces. As a Principal Engineer, you’ll define the technical vision and strategy, driving innovation and leading technological change across the business. This role will join their Martech and Adtech function who create tooling to drive conversion and revenue via marketing, advertising, and external partnerships. This is an individual contributor level role. Ideally we are looking for any level of experience with a Martech stack (CRM, CMS, loyalty/referrals/rewards), opinion on go to market strategy, and a genuine full stack person who can design a full system.This is your chance to own the full lifecycle of implementing and maintaining high-performance payment processing systems and secure transaction processing.  Key Responsibilities:

• Lead innovation across teams, identifying and championing technical initiatives.
• Define roadmaps and guide engineers from different departments.
• Shape the future technical strategy with a forward-looking vision.
• Mentor and inspire engineers, fostering a culture of excellence and knowledge sharing.
• Actively participate in company-level decision-making and cross-functional initiatives.

 Key Requirements:

• Extensive experience in building large-scale distributed systems.
• Expertise in CRM, CMS, ad tech, or communications technology.
• Strong experience with the PERN stack (PostgreSQL, Express, React, Node.js).
• Proven track record in designing and maintaining high-performance payment processing systems.
• Deep understanding of secure transaction processing and implementation of industry standards.

Why apply?

• Exciting Tech Projects: Work on cutting-edge technologies within a modern, fast-growing tech business.
• Empowered Team: Join a passionate team of Engineering, Data, and Product professionals.
• Excellent Benefits: Including a bonus scheme, electric vehicle salary sacrifice, private medical, and more!

  If you want to be part of a forward-thinking, values-driven company on a mission to transform home improvements, this is your opportunity.  We are an equal opportunities employer committed to diversity and inclusion.