Does CelloIP Technologies hire remote engineers?

Yes. CelloIP Technologies is remote-friendly and hires VoIP, WebRTC, AI, Flutter, and Node.js engineers across India. The Ahmedabad headquarters also offers hybrid and on-site options.

What roles is CelloIP hiring for?

CelloIP is currently hiring Senior VoIP Engineers, WebRTC Full-Stack Developers, AI Voice Agent Engineers, Node.js Backend Developers, Flutter Mobile Developers, and DevOps/Infrastructure Engineers.

How do I apply for a job at CelloIP Technologies?

Send your CV and a brief introduction to [email protected] with the role title in the subject line. CelloIP reviews every application within 3–5 business days.

We're Hiring

Build the Future of VoIP & AI Communication

Join a team of 50+ engineers who ship real-time communication infrastructure used by enterprises across 30+ countries. We work on Asterisk, FreeSWITCH, WebRTC, AI voice agents, and more — deep tech that actually matters.

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50+

Team Members

12+

Years Building

30+

Countries Served

200+

Projects Delivered

Why Engineers Love Working Here

We're not a feature factory. Every engineer owns their domain, ships production code from day one, and grows fast in an environment that rewards deep technical skill.

Remote-Friendly Culture

Work from anywhere in India. We believe great engineering happens wherever you're most focused — home, co-working space, or our Ahmedabad HQ.

Fast Career Growth

Flat hierarchy means your work is visible. Engineers who ship quality code move to senior, lead, and architect roles within 12–24 months.

Continuous Learning

Sponsored certifications, conference allowances, and a curated library of VoIP, cloud, and AI courses. We invest heavily in keeping the team at the cutting edge.

Competitive Compensation

Market-beating salaries with performance bonuses, equity participation for senior hires, and transparent pay bands with annual reviews.

Collaborative Team

Daily stand-ups, quarterly off-sites, cricket & badminton Saturdays, and a Slack culture where everyone's opinion counts — from intern to CTO.

Work on Real Scale

No toy projects. You'll be building systems that handle millions of minutes of live VoIP traffic, AI voice agents, and SIP infrastructure for enterprise clients worldwide.

Open Positions

All roles include competitive salaries, remote flexibility, learning allowances, and the chance to work on carrier-grade VoIP and AI communication systems.

Senior VoIP Engineer

Engineering
Full-time Ahmedabad / Remote 4–8 years experienceFull-time
  • Design and deploy carrier-grade Asterisk/FreeSWITCH systems
  • Work on multi-tenant PBX, call centre, and MVNO platforms
  • Hands-on with SIP trunking, media transcoding, and SRTP
  • Collaborate directly with international enterprise clients
AsteriskFreeSWITCHPJSIPKamailioSIP/RTPLinux
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WebRTC Full-Stack Developer

Engineering
Full-time Ahmedabad / Remote 3–6 years experienceFull-time
  • Build browser-based real-time communication platforms
  • Implement SFU/MCU topologies with Mediasoup and Janus
  • Integrate SIP.js with Asterisk/FreeSWITCH back-ends
  • Develop real-time analytics dashboards for call centres
WebRTCReact.jsNode.jsSIP.jsMediasoupTypeScript
Apply Now

AI Voice Agent Engineer

AI / ML
Full-time Remote / Ahmedabad 2–5 years experienceFull-time
  • Build production voice AI pipelines: STT → LLM → TTS
  • Integrate LiveKit Agents SDK with SIP trunking and Asterisk
  • Implement function-calling, tool-use, and semantic turn detection
  • Fine-tune speech models for VoIP audio quality (8 kHz, OPUS)
PythonLiveKitDeepgramGPT-4oElevenLabsFastAPI
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Node.js Backend Developer

Engineering
Full-time Ahmedabad / Remote 3–5 years experienceFull-time
  • Build REST & WebSocket APIs for VoIP management platforms
  • Integrate Asterisk AMI/ARI and FreeSWITCH ESL with Node.js
  • Design real-time CDR processing and billing engine components
  • Own microservices in a Kubernetes-based production environment
Node.jsTypeScriptExpressMongoDBRedisDocker
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Flutter Mobile Developer

Mobile
Full-time Ahmedabad / Hybrid 2–5 years experienceFull-time
  • Build white-label iOS & Android SIP softphone apps
  • Implement background calling, push notifications (APNs + FCM)
  • Integrate flutter_callkit_incoming for native call UI on both platforms
  • Work on codec negotiation, DTMF, and call transfer features
FlutterDartdart-sip-uaiOSAndroidFCM/APNs
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DevOps / Infrastructure Engineer

DevOps
Full-time Remote 3–6 years experienceFull-time
  • Manage Kubernetes clusters hosting VoIP and WebRTC workloads
  • Set up CI/CD pipelines for FreeSWITCH and Asterisk deployments
  • Implement Prometheus + Grafana monitoring for SIP infrastructure
  • Handle TURN/STUN server deployment and coturn configuration
KubernetesDockerTerraformAWS/GCPPrometheusLinux
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Our Hiring Process

Fast, transparent, and respectful of your time — typically 7–10 days end to end.

Step 01

Application Review

We read every CV personally. You hear back within 3–5 business days.

Step 02

Technical Screen

30-min call to discuss your background and a short async coding/config task.

Step 03

Deep-Dive Interview

60-min technical interview with a senior engineer on the relevant domain.

Step 04

Offer & Onboarding

Offer letter within 48h of final round. Structured 30-day onboarding plan.

Don't See Your Role?

We're always on the lookout for exceptional VoIP engineers, telecom architects, and communication platform specialists. Send us your CV and we'll reach out when the right opportunity opens.

Send Open Application Meet the Team

📧 [email protected]  ·  📍 Ahmedabad, Gujarat, India  ·  🌐 Remote across India