Senior Product Engineer (Backend) | Series B, London (Hybrid)

Company: Ethos
Apply for the Senior Product Engineer (Backend) | Series B, London (Hybrid)
Location: Greater London
Job Description:

We’re working with a series B startup, building the next-generation CRM platform; AI-native, data-driven, and designed for how modern teams actually work. Backed by top-tier investors and growing fast.

We’re looking for a Senior Backend Engineer to help shape the core of the product.

What you’ll work on:

  • Designing and building scalable backend systems in Node.js and TypeScript
  • Cloud-native architecture on GCP — from API design to data pipelines
  • Distributed systems that handle real-time data enrichment, syncing, and automation at scale
  • Shipping product end-to-end with a small, high-ownership engineering team

What we’re looking for:

  • 5+ years of backend or full-stack engineering experience
  • Strong production experience with Node.js/TypeScript
  • Deep familiarity with cloud-native patterns – containerization, service orchestration, infrastructure-as-code
  • Track record building REST APIs and data-intensive systems
  • Experience at B2B SaaS, developer tools, or API-first companies is a plus

What we offer:

  • Hybrid working from our London office
  • Small team, high impact – you’ll own entire systems, not just tickets
  • A product that customers genuinely love, in a market ready for disruption

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Posted: March 27th, 2026