We are building a web app that leverages Vapi.ai’s voiceagent platform via their APIs & SDKs. You will build app features around Vapi.ai: triggering calls or web calls, embedding voice UI, managing workflows/tools via Vapi’s APIs, handling webhooks, and integrating external services. You do not need to build speechtotext, large language model, or texttospeech engines yourself—they are provided by Vapi.ai.

Responsibilities

• Use Vapi.ai’s APIs / SDKs to create and manage “assistants”/agents (voice agents).
• Build features that trigger inbound/outbound calls or web calls using Vapi.ai.
• Embed voicecall widgets or buttons in the frontend web app and handle events (call start, end, etc.).
• Set up and handle webhooks from Vapi.ai for asynchronous events and callbacks.
• Implement custom tools/workflows: e.g. integrating appointments, CRM updates, etc., via external APIs triggered by voice commands or events.
• Initialize projects using Vapi CLI, use environment variables, manage API keys/credentials securely.
• Maintain state/conversation flow logic in frontend/backend (e.g. calling correct assistant, managing fallback if needed).
• Test, debug API errors, edge cases; ensure robustness (handling API failures, latency).
• Document the parts of the system, setup, environment variables, and how Vapi.ai is used.

Required Skills & Experience

• Strong experience in web development: frontend frameworks (React, Vue, or similar) and backend (Node.js, Python, or similar).
• Comfortable working with REST APIs / HTTP + JSON; experience with webhooks.
• Experience using SDKs (client & server) in supported frameworks; familiarity with CLI tools for scaffolding projects.
• Good understanding of environment configuration (env vars), secret management, secure credential handling.
• Experience embedding UI components or widgets into web apps and handling events.
• Experience integrating with external services via APIs (e.g. scheduling, storage, CRM).
• Solid debugging skills of API integrations: handling asynchronous flows, callbacks, error handling.

Nice to Have

• Prior experience specifically with Vapi.ai (or similar voiceagent providers) using their assistants, web calls, phone calls.
• Experience with telephony / phone number management / SIP integration.
• Familiarity with workflows / tools inside voice agents (default tools, custom tools) and working with tools like Make, GHL, or similar.
• Familiarity with monitoring / logging / analytics around voice event flows.

What You’ll Get

• The chance to build a product quickly, using welldefined APIs (Vapi.ai).
• Less concern over building lowlevel voice / AI infrastructure—your job is wiring things up.
• Direct ownership over the user flow, frontend & backend parts of the app.
• Flexible / remote working, opportunity to grow with the project.