SWAPNIL SWARAJ SINHA

CTO / Full‑Stack Engineering Leader with deep Flutter and Node.js expertise. I build reliable,

scalable, and observable systems end‑to‑end—mobile, web, and backend. Led multi‑disciplinary teams

(FE, BE, DevOps, QA), rebuilt platforms to handle multi‑crore monthly GMV and 5–7 lakh orders/month,

and shipped secure payment flows, offline‑first field apps, and high‑signal observability stacks.

• Languages: Dart, JavaScript/TypeScript, C/C++, C#, Python, SQL, HTML/CSS
• Mobile & Web: Flutter, React, React Native (Web), GoRouter/AutoRoute, Riverpod, BloC/Cubit, GetX
• Backend: Node.js, Express, Sequelize, Firebase Functions
• Messaging & Async: RabbitMQ, WebSockets/Socket.IO
• Data & Caching: Redis; SQL (PostgreSQL/MySQL); NoSQL (MongoDB, Firestore)
• Observability & SRE: Grafana, Prometheus, Graylog, error budgets, incident response runbooks
• Payments: Razorpay (merchant integrations: authorization, orders, capture, refunds, webhooks, reconciliation), Stripe, in-house UPI
• Architecture & Patterns: Clean Architecture, MVVM, MVC, MVP, mono-repo (Melos), offline-first, modular package design
• Security & Compliance: Authentication (SSO), audit logging, role-based access control, secure secret management
• CI/CD & DevOps: Jenkins, Codemagic, GitHub/Bitbucket, Jira, Trello, OpenProject, Confluence
• Cloud & Platforms: Firebase, Appwrite, AWS/GCP friendly
• AI & LLM Tooling: Azure AI Agent APIs, OpenAI (prompts, embeddings, assistants)
• Additional Tools: Unity, Graylog

• Jurislogica — AI Co-Pilot for Lawyers (Singapore)
  Stack: Node.js, React, Socket.IO, Azure AI Agent APIs
  Built a legal-assistant prototype enabling secure chat, document context, and AI-assisted workflows for practitioners.
  Designed low-latency Socket.IO messaging and Azure-backed reasoning flows with full auditability.
• Muncho — QR-Based Social Dine-In Ecosystem (v1 → v2.0)
  Context: POS integrations (PetPooja, Prism, Razorpay) were present in v1. In v2.0, they were enhanced for scale with merchant-grade payment flows, stronger reconciliation, and higher reliability.
  Apps in 2.0:
  User Web App (React Native Web): QR ordering, order tracking, offers, PDF bills, UPI + Razorpay/Stripe payments.
  Waiter App (Flutter): Real-time tables, RBAC, hybrid offline/online queueing for poor connectivity.
  Dashboard (React): Ops console for menu/pricing, discounts, settlements/refunds, analytics, audit trails.
  Scale & Payments: Multi-crore GMV/month; ~5–7 lakh orders/month; Razorpay orders/captures/refunds/webhooks with idempotency + automated reconciliation.
  Backend & Ops: Node.js, Express, Sequelize; Redis caching; RabbitMQ jobs; Grafana/Prometheus (metrics); Graylog (logs); structured alerts & runbooks.
  Data & Security: Strong RBAC, audit logging, SSO; data partitioning per restaurant/outlet; PII minimization and secure secret management.
• Wrkin.app — Workplace Communication & HRMS
  Features: Real-time chat, multimedia sharing, emoji keyboard, in-chat tasking, FCM notifications.
  State & Storage: Provider + Shared Preferences for lightweight local persistence.
• Groupstag — Group Social Media
  Features: Groups, photo albums, camera filter editing, collaborative interactions.
  Tech: Firebase-backed real-time features using Provider patterns.