Principal Backend Developer

Responsibilities

• Own core backend systems by designing, building, and maintaining scalable services, APIs, and platform infrastructure.
• Architect and operate high-volume, resilient data pipelines for ingestion, transformation, and analytics.
• Lead third-party integrations with external vendors, ensuring reliability and long-term maintainability.
• Influence technical architecture, coding standards, testing frameworks, and CI/CD pipelines.
• Mentor and provide technical guidance to engineers on system design and debugging at scale.
• Support DevOps and platform troubleshooting needs as required in a fast-paced environment.

Requirements

• 8+ years of professional backend engineering experience.
• Bachelor’s degree in Computer Science, Software Engineering, or equivalent practical experience.
• Strong expertise in backend languages such as Node.js/TypeScript, Go, or Python.
• Proven experience designing scalable distributed systems, microservices, and event-driven architectures.
• Deep experience with third-party integrations, REST/GraphQL APIs, and webhooks.
• Proficiency with SQL/NoSQL databases and data pipeline performance optimization.
• Familiarity with cloud platforms (AWS or GCP) and containerization tools like Docker and Kubernetes.

Preferred Qualifications

• Experience building and shipping features quickly within early-stage startups.
• Exposure to domains such as analytics, payments, notifications, or workflow orchestration.
• Hands-on experience with serverless or edge architectures.
• Track record of scaling systems from initial MVPs to production-ready services.

Benefits

• Competitive salary range of $152,000 - $209,000.
• Healthcare coverage.
• Annual incentive program.
• Retirement benefits.

About the Company

Extuitive is a Flagship Pioneering–backed startup reimagining product innovation for the AI era. Our mission is to empower entrepreneurs and direct-to-consumer (D2C) brands with AI-driven tools that simplify, accelerate, and scale the launch of new products. Based in Cambridge, MA, we operate like a special ops unit—fast-moving, data-driven, and relentlessly focused on impact.