UCaaS Platform Developer / Software Engineer

Swadesh Mobile; Mumbai; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

UCaaS Private Limited is seeking a Platform Developer to work on our UCaaS platform, focusing on real-time communications, SIP, WebRTC, and cloud-native services.

You will collaborate across backend and frontend teams to design scalable modules, implement integrations, and ensure robust testing and deployment pipelines.

Qualifications

• Experience with UCaaS, VoIP, or Cloud PBX platforms.
• Hands-on with real-time communications technologies.
• Develop and deploy modules including testing and integration.

Responsibilities

• Develop assigned UCaaS modules from requirements to production deployment.
• Design implementations, develop frontend/backend functionality, integrate APIs.
• Ensure quality with testing and documentation, ship milestones.

Skills

SIP

WebRTC

VoIP

PBX

IVR

Call routing

Real-time streams

SIP Trunking

DID

Tools

Linux

Docker

Redis

PostgreSQL

MySQL

REST APIs

WebSockets

Microservices

Job description

UCaaS Platform Developer / Software Engineer

Company: UCaaS Private Limited | Type: Full-Time | Experience: 2+ Years Preferred

About the Role

We are building a next-generation Unified Communications as a Service (UCaaS) platform and are looking for an experienced developer who understands cloud communications and real-time communication technologies.

We are specifically looking for candidates who have previously worked on UCaaS, VoIP, Cloud PBX, Contact Center, WebRTC, SIP, or similar communication platforms.

You will work directly on developing individual modules and features of our UCaaS platform, including development, integration, testing, debugging, and deployment.

What You Will Work On

• Cloud PBX & Business Phone System, WebRTC Softphone, SIP Calling
• Inbound & Outbound Calling, IVR & Call Routing, Ring Groups & Call Queues
• Call Recording, Voicemail, Call History & CDR, SMS/MMS, Internal Team Chat
• Video Meetings, Contact Management, Agent & Extension Management
• Predictive / Progressive Dialer, Contact Center Features, CRM Integrations
• REST APIs & Webhooks, Reporting & Analytics, AI-powered call transcription & summaries

Key Responsibilities

You will be responsible for developing assigned modules of the UCaaS platform from requirement gathering all the way to final production deployment.

Responsibilities include understanding module requirements, designing technical implementations, developing robust frontend/backend functionality, integrating APIs and external communication services, testing each feature thoroughly, fixing performance bottlenecks/bugs, and maintaining clean technical documentation.

Each development cycle includes clearly defined milestones where working functionality must be built, tested, and shipped safely.

Technical Experience We Are Looking For

Communication Tech

SIP, WebRTC, RTP, WebSocket, VoIP, PBX, SIP Trunking, DID, IVR, call queues, call routing, and real-time streams.

Telephony Platforms

Asterisk, FreeSWITCH, Kamailio, OpenSIPS, or equivalent core telecom infrastructures.

Backend Stack

Node.js, Python, PHP, Java, Go, or other modern backend framework models.

React.js, Next.js, JavaScript, TypeScript, or similar modular ecosystems.

Frontend Frameworks

Infrastructure/DB

Linux, Docker, Redis, PostgreSQL, MySQL, REST APIs, WebSockets, Microservices.

Ideal Candidate Profile

We value practical, production-proven delivery more than theoretical concepts. We are looking for engineers who have directly built or contributed to a UCaaS Platform, Cloud PBX, VoIP System, Contact Center, WebRTC Application, or Telecom SaaS Product.

IMPORTANT: This is not a generic web development position. We specifically seek professionals with a solid technical baseline or direct hands‑on history in real‑time communications and telecom/UCaaS software engineering layers.