Platform Engineer

The role

You will work on full-stack systems including billing, authentication, onboarding, and integrations. You will build and maintain user-facing platform features and integrate third-party APIs.

What you will do

• Build and maintain user-facing platform features.
• Integrate and maintain third-party APIs.
• Write TypeScript/Node backend services and React frontend components.
• Improve reliability and performance of core platform flows.
• Implement observability, logging, and error-tracking standards.
• Collaborate across teams to design APIs.
• Document architecture and best practices.

Required qualifications

• 5+ years of professional software engineering experience.
• Strong proficiency in TypeScript, Node.js, and React.
• Experience integrating and maintaining 3rd party APIs.
• Proven track record shipping production full-stack web apps.
• Familiarity with cloud hosting (GCP/AWS/Firebase) and CI/CD basics.
• Strong debugging and cross-system troubleshooting skills.
• Excellent written and verbal communication.
• Thrives in async, remote teams.

Nice to have

• Experience with multi-tenant SaaS or collaborative web platforms.
• Familiarity with auth frameworks (OAuth, JWT, Firebase Auth).
• Exposure to observability stacks (Sentry, Datadog, Grafana).
• Prior experience building internal tools or admin dashboards.
• Startup or 0 → 1 product-building experience.

About the company

Flux is building the world's first AI hardware engineer. Their platform enables anyone to go from idea to manufacturable board using a natural language prompt.