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Principal Backend / Fullstack Engineer (E-commerce & Platform Integrations)

London, England, United Kingdom💼 Full-time🗓 2026-03-25 → 2026-07-30

Core

Design and evolve backend and API platforms powering ecommerce, loyalty, and clienteling experiences, integrating with CRM and data systems for personalization and analytics.

Role type

Principal Backend / Fullstack Engineer

Builds

Scalable backend services, API middleware, and integration layers connecting digital products to CRM, SCV, and downstream data systems.

Domain

E-commerce, digital experience platforms, and customer data platforms

Deliverable

production ML models | product features | infrastructure

Required skills

Node.js, TypeScript, REST/GraphQL API development, microservices architecture, AWS or GCP, CI/CD, Terraform, Docker, Kafka/Pub/Sub, authentication and security, observability (logging, metrics, tracing)

Preferred skills

Experience with ecommerce platforms (BigCommerce, Shopify, Salesforce Commerce), mentoring engineers, shaping engineering culture

Technologies

Node.js, TypeScript, AWS, GCP, Terraform, Docker, Kafka, New Relic, Datadog, CloudWatch

Responsibilities

Own backend and API architecture for ecommerce, loyalty, and clienteling platforms; Design, build, and evolve backend services; Lead integrations for global commerce (payments, fulfillment, logistics); Architect and maintain scalable APIs and middleware; Develop API governance and security strategies; Implement observability standards; Collaborate with frontend, product, and data teams; Drive DevOps and platform automation; Mentor engineers and contribute to best practices

Seniority

Principal, hands-on technical leadership with strategy definition

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