Full Stack Javascript/TypeScript Developer
Core
Architect and build custom API integrations connecting HubSpot CRM to client business systems (ERPs, finance platforms, marketing tools) and contribute to internal product development for revenue teams.
Role type
Full Stack JavaScript/TypeScript Developer (Integration & Product)
Builds
Custom API integrations, HubSpot Developer Projects (UI Extensions, App Cards, serverless functions), and internal SaaS product features.
Domain
SaaS, CRM integrations, Enterprise software
Deliverable
production ML models | product features | dashboards & analysis | client delivery
Required skills
JavaScript/TypeScript, Node.js (v20+), Express, React, RESTful APIs, webhooks, OAuth authentication, AI coding assistants, technical decision-making, business judgment
Preferred skills
HubSpot APIs, Salesforce/Microsoft Dynamics/NetSuite integration, e-commerce/payment APIs, ERP/CPQ integration, RevOps concepts
Technologies
JavaScript, TypeScript, Node.js, Express, React, Google Cloud Firestore, Heroku, HubSpot Operations Hub
Responsibilities
Architect and build custom API integrations between HubSpot and client tech stacks, Build and maintain HubSpot Developer Projects including UI Extensions and serverless integrations, Configure integration workflows, webhooks, and field mappings across platforms, Collaborate directly with clients to gather requirements and present technical solutions, Own code quality through testing, code review, and bug resolution, Contribute to internal product development alongside product manager
Seniority
Mid-level (2-5 years experience), hands-on IC