Backend Software Engineer
JyotirmayGupta
APIs, microservices, and production systems that stay up.
Software engineer with nearly two years of full-time experience building backend APIs, microservices, and production deployments across healthcare, financial applications, and voice platforms.
About
Backend systems with sharp edges — security, queues, and shipping.
I design and ship backend systems that need to be secure, observable, and easy to operate — from JWT gateways and Redis-backed rate limits to RabbitMQ event pipelines and multi-tenant FastAPI services.
Recently at Shyphan AI Solutions I've owned Node.js/TypeScript microservices for ORBS and a Voice Hub calling platform. Before that at QuadB I delivered Genius CFO APIs, LangChain RAG workflows, and TypeScript SDKs for DiFinance.
Outside work I care about clean service boundaries, CI/CD that can roll back safely, and interfaces that make complex systems feel simple.
Experience
Where I've shipped
Shyphan AI Solutions
Full Stack Engineer
Noida, India · Apr 2026 — Present
- Engineered Node.js/TypeScript microservices for ORBS using PostgreSQL, Redis, and RabbitMQ; enforced service boundaries with ESLint and added Winston logging plus OpenTelemetry/SigNoz observability.
- Implemented an API gateway with JWT validation, silent refresh, session anomaly detection, three-tier Redis rate limiting, reverse proxy routing, Swagger docs, and security/integration tests.
- Strengthened admin RBAC with Redis-cached grants, fail-closed guards, TOTP MFA, encrypted secrets, backup codes, and step-up re-authentication.
- Enabled FIDO2/WebAuthn passwordless login with attestation verification, expiring Redis challenges, credential public-key storage, and OTP fallback.
- Designed a standalone notification microservice with Zod-validated RabbitMQ events, delayed retries, dead-letter routing, and multi-channel delivery (email, SMS, WhatsApp, FCM, in-app).
- Automated CI/CD with GitHub Actions, Trivy scans, GHCR publishing, health-gated deployments, automatic rollback, and pre-migration backups.
- Built a multi-tenant FastAPI Voice Hub for campaigns, contacts, calls, and wallet billing; integrated Ultravox, Twilio, and Plivo with Celery/APScheduler workflows.
QuadB Technologies
Software Developer (SDE 1)
Ludhiana, India · Nov 2024 — Mar 2026
- Delivered JWT-secured REST APIs for Genius CFO using Python/FastAPI, Pydantic, Node.js, TypeScript, PostgreSQL, and Redis in a microservices architecture.
- Connected LangChain agents to ChatGPT and Claude APIs; implemented Qdrant-based RAG with OpenAI embeddings for financial automation workflows.
- Deployed Python microservices on DigitalOcean using Docker, Nginx, and AWS S3.
- Authored a TypeScript SDK for mini-app integrations and backend services for DiFinance.
Projects
Systems & products
Production platforms from recent roles, plus selected personal builds.
Healthcare microservices & gateway
ORBS Platform
Production Node.js/TypeScript microservices with PostgreSQL, Redis, and RabbitMQ — including a hardened API gateway, RBAC/MFA, WebAuthn, and a multi-channel notification service.
Service boundaries, observability (OpenTelemetry/SigNoz), and CI/CD with health-gated rollouts and automatic rollback.
Production system · private codebase
Multi-tenant voice campaigns
Voice Hub
FastAPI backend for campaigns, contacts, outbound calls, and wallet billing with JWT/RBAC, Ultravox/Twilio/Plivo integrations, and async Celery workflows.
End-to-end call lifecycle tracking with webhooks, scheduled campaigns, and multi-tenant isolation.
Production system · private codebase
Financial APIs + RAG automation
Genius CFO
JWT-secured REST APIs and LangChain agents connected to ChatGPT/Claude, with Qdrant RAG over OpenAI embeddings for financial automation.
Microservices on DigitalOcean with Docker, Nginx, and AWS S3-backed deployments.
TypeScript integrations
DiFinance SDK
TypeScript SDK for mini-app integrations plus supporting backend services for DiFinance product surfaces.
Cleaner third-party and mini-app integration paths for backend consumers.
Production system · private codebase
Skills
What I work with
Stack shaped by production APIs, event-driven services, AI workflows, and delivery pipelines.