Full-Stack Software Engineer VOIP & Twilio Infrastructure (Back End)

Full-Stack Software Engineer VOIP & Twilio Infrastructure (Back End)
Bucureşti
Bucharest, Bucharest, Romania

We are building a cloud Vo
IP +
- center platform for a restaurant group with multiple locations and a centralized catering call center.
Phase 1 MVP includes Twilio Voice (inbound/outbound), Task
Router queues & routing, voicemail, call recordings, browser softphone, admin dashboards,
and
- location routing. Phase 2 includes the visual IVR flow builder.

Responsibilities

• Architect and implement Node. js/Type
  Script backend powering
  - time telephony and routing.
• Integrate deeply with Twilio Voice API, Task
  Router, and Twi
  ML webhooks.
• Develop REST and Web
  Socket APIs for the browser softphone and admin dashboards.
• Build ACD routing logic, overflow rules, and
  - hours routing.
• Implement voicemail and call recording pipelines; handle secure audio storage (S3/GCP).
• Own
  - location logic: hours, numbers, E911 profiles, routing rules, menus.
• Implement OAuth/JWT authentication and
  - based access control.
• Handle Twilio event callbacks, including busy/no-answer/timeouts.
• Implement compliance requirements (STIR/SHAKEN, E911 verification, recording consent).
• Collaborate with
  - focused engineer on shared API contracts and Type
  Script models.
• Deploy and monitor services using Docker, CI/CD, and cloud infrastructure.
• Implement logging, observability, and automated
  - flow and webhook tests.

Must-Have Requirements

• Strong
  - on experience with Twilio Voice API and Twi
  ML call control.
• Experience with Twilio Task
  Router (queues, workers, reservations, workflows).
• 3+ years of Node. js and Type
  Script experience.
• Deep understanding of Vo
  IP systems: SIP, RTP, Web
  RTC signaling, DTMF.
• Experience with webhooks, async
  - driven systems, and distributed flows.
• Database experience with Postgre
  SQL and ORM tools such as Prisma.
• Experience with AWS S3 or GCP Cloud Storage for audio retention.
• Knowledge of E911, STIR/SHAKEN, and
  - recording legal requirements.
• Ability to build testable, observable, reliable backend services.
• Strong communication and system design skills.