Open to opportunities

sarjak modi

@sarjakmodi

Message

Full-stack software engineer building AI-powered, scalable SaaS and automation systems.

India

Message

What I'm looking for

I want to build full-stack products with strong ownership of architecture and integrations—especially AI-enabled experiences. I’m looking for a team that values reliability, scalability on AWS, and fast iteration without sacrificing quality.

I’m a Full Stack software engineer focused on building production-ready platforms that combine automation, reliability, and AI. At Codiste, I designed multi-tenant, white-label architecture for a Voice AI SaaS—supporting custom domains, tenant-level user management, and client-specific configurations across industries.

I’ve built telephony and workflow systems that operate globally, integrating Telnyx and Twilio for inbound/outbound pipelines, KYC-based provisioning, DTMF handling, machine detection, and real-time AI-human call switching. I also architected intelligent call routing and CRM automation by connecting HubSpot, GoHighLevel, and Google Calendar to enable lead generation, appointment scheduling, business-hours routing, and AI-driven sales/support workflows.

I enjoy pushing complex ideas into scalable software: I built a RAG-based real-time chat using NestJS, LanceDB, LangChain/LangGraph, and WebSocket; enhanced a cryptocurrency tax platform with Greek tax logic and multi-exchange workflows; and delivered Telegram bots deployed on AWS. I’ve also implemented Stripe payment/subscription flows, created a white-label NFT minting tool across blockchain networks, and built backend systems on Node.js and AWS/RDS to achieve 99% uptime.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer

Current

Codiste

Sep 2022 - Present (3 years 10 months)

Designed and implemented multi-tenant and white-label architecture for a Voice AI SaaS platform, including custom domains and tenant-level user management. Built Voice AI telephony infrastructure, CRM automation workflows, a RAG-based real-time chat system, crypto tax features, Telegram bots, payment/subscription workflows, and NFT minting tooling.

MERN Stack Intern

Vah Vah!

Jun 2022 - Sep 2022 (3 months)

Integrated new front-end UI design and updated APIs to support credit notes and debit notes functionality. Resolved bugs and added supplementary functions in the admin panel to improve performance and usability.