Full Stack Software Engineer WebRTC Softphone & IVR Flow Builder (Front End)

Full Stack Software Engineer WebRTC Softphone & IVR Flow Builder (Front End)
Bucureşti
Bucharest, Bucharest, Romania

You will build the frontend interface for the Twilio-based voice platform used across all locations.
Phase 1 includes softphone UI, dashboards,
- time monitoring, and admin tools.
Phase 2 includes a visual IVR flow builder developed after MVP launch.

Responsibilities

• Build React/Next. js softphone and dashboards for admins, agents, and managers.
• Integrate Twilio Voice JS SDK for
  - time Web
  RTC calling.
• Implement calling features such as dial/answer, mute, hold, transfer, and device selection.
• Develop dashboards: queue state, agent status, voicemails, recordings, location controls.
• Implement
  - time updates using Web
  Sockets (and optionally Twilio Sync).
• Create clean UI/UX with Tailwind
  CSS or shadcn/ui and ensure accessibility.
• Ensure
  - browser Web
  RTC compatibility (Chrome, Safari, Firefox, Edge).
• Implement authentication (JWT/OAuth) and enforce
  - based interfaces.
• Collaborate on backend API design and shared Type
  Script models.
• Add Sentry logs and automated UI testing for Web
  RTC and device errors.
• Phase 2: Build the visual IVR builder using React Flow with versioning, preview, and publishing.

Must-Have Requirements

• 3+ years experience with React and Type
  Script; Next. js strongly preferred.
• Hands-on experience integrating Twilio Voice JS SDK or similar Web
  RTC technologies.
• Strong understanding of Web
  RTC audio handling, device switching, and echo/noise issues.
• Experience with
  - time applications (Web
  Sockets, live dashboards,
  - user states).
• Strong UI/UX implementation skills with Tailwind
  CSS, shadcn/ui, or Material UI.
• Experience consuming REST and Web
  Socket APIs.
• Knowledge of JWT/OAuth authentication flows.
• Experience with performance optimization and debugging media issues.
• Strong collaboration skills, especially around
  - functional API development.