Senior Software Engineer – Node.js/TypeScript API (Contract)

About the role

Headspace Health is seeking a Contract Senior Software Engineer to join the Employer Solutions team. You will build the backend services that power commercial partnerships, enabling employers to offer Headspace as a mental‑health benefit.

Key responsibilities

• Design, develop, and maintain flexible, mission‑critical APIs and microservices for enrollment, eligibility, authentication, and entitlement flows.
• Collaborate with product and engineering teams to gather requirements, write RFCs, and produce technical specifications.
• Communicate technical concepts clearly to both technical and non‑technical stakeholders.
• Make informed trade‑offs between complexity, quality, and delivery speed.
• Maintain high standards for documentation, code reviews, and operational excellence.
• Influence system architecture, product quality, and SLA targets.
• Apply best practices in testing, monitoring, alerting, and observability.

Required profile

• BS/MS in Computer Science or equivalent experience.
• 6+ years of software engineering experience focused on JavaScript/TypeScript and Node.js.
• Proven ability to design and implement APIs and microservice architectures.
• Experience writing robust unit, integration, and end‑to‑end tests (e.g., Jest, Gatling, Playwright).
• Track record delivering complex projects in fast‑paced Agile environments.
• Excellent communication skills and ability to work remotely with cross‑functional teams.
• Advanced English proficiency (B2‑C1 or higher).

Required skills

• JavaScript
• TypeScript
• Node.js
• API design
• Microservices
• Jest
• Gatling
• Playwright
• AWS