Lead Backend Architect, Scalable AI Platform

flagshippioneeringinc; Cambridge; On-site; GBP 110,000 - 140,000; Full time

Job summary

Flagship Pioneering is seeking a Principal Backend Engineer in Cambridge (USA) to architect and scale core backend systems powering our agentic platform. You will drive high-throughput services, data pipelines, and integrations with external providers, shaping architecture and ensuring security and reliability as we grow.

The role demands 8+ years in backend engineering, deep experience with distributed systems, cloud platforms, and strong coding standards.

Qualifications

• 8+ years of backend engineering experience.

Responsibilities

• Own core backend systems design, build, and maintenance for scalable services.
• Lead large-scale data pipelines for ingestion, transformation, and analytics.
• Drive third-party integrations with external vendors for reliability and maintainability.
• Influence architecture, coding standards, testing, CI/CD, and operational excellence.
• Support DevOps and platform needs as required.

Skills

Backend engineering

Node.js/TypeScript

Go

Python

REST/GraphQL APIs

Distributed systems

Cloud platforms

Docker/Kubernetes

CI/CD

Observability

Education

Bachelor's degree in Computer Science or equivalent

Tools

Docker

Kubernetes

AWS

GCP

Job description

Flagship Pioneering is seeking a Principal Backend Engineer in Cambridge (USA) to architect and scale core backend systems powering our agentic platform. You will drive high-throughput services, data pipelines, and integrations with external providers, shaping architecture and ensuring security and reliability as we grow.

The role demands 8+ years in backend engineering, deep experience with distributed systems, cloud platforms, and strong coding standards.