01
Voice AI Platform
Owned the pipeline through two provider migrations — Vonage → Vapi (aire-sft) → Telnyx. SIP → STT → LLM intent → POS, <1.2s at 200+ concurrent calls.
Available now · US Remote
I build
voice to
order.
SIP → speech → LLM → POS → payment. 200+ concurrent live sessions, under 1.2s end to end.
Senior Backend Engineer. Most recently Technical Lead at Ezra Technologies (USA), building real-time voice, telephony and payments infrastructure — and the cross-cloud systems that kept it up. 500+ locations, $1M+/month in orders. Available now, US remote from Mumbai.
200+
Concurrent live voice sessions in production
<1.2s
End-to-end response across a five-hop pipeline
43%
Platform cost cut by replacing managed telephony
1M+
Users on a product I proposed & shipped
What I build
The full pipeline,
phone to payment
200+ concurrent live sessions under 1.2s, 10,000+ orders a day, $1M+/month — across 500+ restaurant locations.
02
Call Center Platform
Proposed and delivered self-hosted Kamailio + FreeSWITCH + SIP.js in place of Telnyx managed services. WebRTC agents, queues, recording, AI-to-human handoff. Cut platform costs 43% — $5K–$6K/month.
03
Order Taking Platform
Built a client-agnostic POS adapter: 10,000+ orders/day ($1M+/month) across Papa John's, Toast, HungerRush, and others. Worldpay + Aurus. Onboarding 3 wks → 5 days.
04
Team & Delivery
Led 8 engineers. Replaced pilot-light DR with a cold-start Terraform architecture across AWS and GCP — full failover for 8 services, both directions.
Writing
How I think
System design deep-dives on the architectures I build with.
System Design
Building a Multi-Tenant Contact Center: SIP, IVR, and WebRTC Agent Delivery
How to architect a production contact center — Kamailio SIP routing, FreeSWITCH media control, event-driven call flow, and browser-based agent delivery.
Read article ↗Voice AI
Designing a Provider-Agnostic Voice AI Ordering Pipeline
Per-tenant AI routing, SIP provider abstraction, payment branching over voice, and graceful AI-to-human handoff.
Read article ↗Infrastructure
Bidirectional Cross-Cloud DR: Cold-Start Failover Between AWS and GCP
Replacing a hand-run pilot-light runbook with an executable cold-start model — keyless cross-cloud auth via Workload Identity Federation, the trust-scoping trap most teams miss, and why copied limits hide under-provisioned standbys.
Read article ↗Experience
Where I've shipped
Backend leadership across voice platforms, ERP integrations, product startups, and developer training.
May 2023 – Aug 2026
Technical Lead
Ezra Technologies (USA) · Remote
- Voice AI — Owned the AI voice-ordering pipeline, evolved from Vonage → Vapi (aire-sft) → Telnyx. SIP → STT → LLM → POS: 5,000+ calls/day, <1.2s at 200+ concurrent calls, 500+ locations.
- Call Center — Replaced Telnyx managed services (call control, WebRTC) with self-hosted Kamailio + FreeSWITCH + SIP.js, reducing platform costs 43% ($5K–$6K/month saved). Built WebRTC agent dialer, queues, recording, and AI-to-human handoff. Architecture proposed by me.
- Order Taking — Client-agnostic POS platform: 10,000+ orders/day ($1M+/month) across Papa John's, Toast, HungerRush. Worldpay + Aurus payments. Merchant onboarding 3 weeks → 5 days.
- Led 8 engineers (backend, integrations, QA). Replaced costly always-on pilot-light DR with cold-start Terraform architecture across AWS and GCP, reducing DR infrastructure cost while maintaining full failover capability for 8 services.
May 2022 – May 2023
Senior Software Developer
Unico Connect · Mumbai
- Led backend architecture across 5 enterprise projects (healthcare, fintech, retail) serving tens of thousands of users.
- Unified 5+ microservices behind Apollo GraphQL federation with DataLoader batching — single endpoint for frontend teams.
- Managed a team of 6: mentored fresher hires, owned sprint delivery, and gathered client requirements directly.
Sep 2020 – May 2022
Node.js Backend Developer
Synergerp (PTY) Ltd · Remote, South Africa
- Built ERP microservices (RabbitMQ, Redis, MongoDB) with B2B integrations across 5+ Sage products (Sage 300, X3, Intacct).
- Proposed and shipped a multi-tenant customer portal (invoices + online payments via Stripe). Grew to ~1M accounts across Sage clients.
Oct 2019 – Sep 2020
Software Engineer
Umrago Pvt Ltd · Mumbai
- Built a travel app from scratch: Angular, Node.js, MongoDB/Redis, AWS/Docker, Razorpay.
- Led a team of 4 through design and shipping.
2018 – 2019
Programming Trainer
Hasbasoft · Mumbai
- Trained 80+ students in JavaScript and Python — covering fundamentals, data structures, DOM manipulation, async patterns, and real-world project building.
- Designed structured curricula and hands-on coding exercises that took students from zero to building deployable projects.
- Mentored students on career readiness: resume reviews, mock interviews, and portfolio guidance.
Stack
Tools I ship with
Backend-first. I own the path from telephony into payments.
Backend
Node.js, TypeScript, Express, REST, GraphQL, Apollo Federation, Python
Frontend
Angular, React, TypeScript, WebRTC / SIP.js browser clients
Data
MySQL, PostgreSQL, MongoDB, Supabase, Redis, Elasticsearch, RabbitMQ, BigQuery
Cloud
AWS (EC2, S3, ECS, ELB), GCP, Terraform, Docker, GitHub Actions, ELK
Voice
Telnyx, Frafos, Vonage, Vapi, STT, LLM, WebRTC
POS & Pay
Toast, HungerRush, Worldpay, Aurus, Stripe, Razorpay
Education
Background
B.E. Computer Engineering
CSMIT, Panvel
2022
Diploma in Computer Engineering
3 years
2019
Honors & Awards
Recognition
LeetCode September 2021 — 1st Runner-Up, All India
30-day daily coding challenge: data structures, algorithms, dynamic programming, trees, and graphs. Ranked among the top nationally out of thousands of participants.
2021
State Level Technical Presentation Runner-Up
Issued by AIARKP · Abdul Razzak Kalsekar Polytechnic, Panvel
Contact
Let's build
something.
Available now for US remote roles. Full US Eastern overlap. Based in Mumbai.