I'm Gourav
Sahu
I build SaaS systems that handle 1M+ daily operations - WhatsApp automation, bulk email pipelines, real-time platforms. React + Node + Redis + MongoDB, running in production.
Who I Am & What I Do
Full Stack Developerbased in Bhopal - I don't just write features, I build entire products from scratch and ship them to production.
Right now at Pabbly, I own two major products end-to-end: WhatsApp ChatFlow - a visual workflow builder doing 1L+ executions daily, and Email Marketing - a bulk sending system pushing 1M+ emails/day through Redis queues and PMTA servers.
My day-to-day involves React, Node.js, MongoDB, Redis, Socket.io - designing queue architectures, writing API endpoints, building drag-and-drop UIs, and debugging production issues at scale. Before Pabbly, I was at iifetech building dashboards and REST APIs, and started my journey at Extempore Software Solutions where I shipped my first production web apps.
What I Bring to the Table
Frontend
React + Next.js + TypeScript. Workflow builders, dashboards, responsive UIs.
Backend
Node.js + Express + Nest.js. REST APIs, queue workers, webhooks.
Database
MongoDB + Redis + MySQL. Indexing, caching, aggregation pipelines.
System Design
Redis queues, worker processes, Socket.io, event-driven patterns.
Currently Learning
My Tech Stack
Technologies I use to bring ideas to life
Frontend
Backend
Tools & Platforms
Core Concepts
Where I've Worked
Companies where I've shipped production code
Associate Software Developer (Full Stack)
Pabbly
- Owned end-to-end delivery of a WhatsApp automation platform handling 1L+ daily workflow executions, built with React Flow supporting conditions, delays, and webhook triggers
- Architected an event-driven execution engine with Redis queues, BullMQ, and worker processes, achieving 99.9% uptime and horizontal scalability
- Integrated WhatsApp Business APIs with real-time tracking via Socket.io, cutting manual monitoring effort by 60% and accelerating debugging for the support team
- Scaled a high-throughput email delivery platform serving 50K+ users and 1M+ emails/day using Redis, SMTP, and PMTA, boosting API throughput by 25-30% and trimming memory footprint by 35% through caching, query tuning, and data structure refactors
- Collaborated across 2-week agile sprints with product, QA, and design teams, leading 30+ code reviews and mentoring 2 junior developers on best practices
Associate Software Engineer (Full Stack)
iifetech Pvt Ltd
- Shipped scalable dashboards and reusable UI component libraries with React.js, Next.js, and TypeScript, accelerating frontend dev speed by 30% across multiple projects
- Optimized REST APIs in Node.js and Express.js handling thousands of daily requests, reducing average response time by 20-25% via SQL tuning, indexing, and Redis caching
- Implemented JWT authentication and role-based access control (RBAC) across 25+ API endpoints supporting 5+ user roles, strengthening platform security via stateless design
- Diagnosed and resolved 20+ critical production incidents through profiling and debugging, cutting average resolution time by 40% spanning frontend and backend layers
- Partnered with cross-functional teams in weekly sprint planning, presenting 10+ technical proposals and contributing to 3 major architectural decisions
Software Developer
Extempore Software Solutions Pvt Ltd
- Contributed to development of web applications using JavaScript, React.js, and Node.js, building responsive UI components and integrating REST APIs for client-facing dashboards
- Resolved bug reports and implemented enhancements across frontend and backend layers, improving application stability and user experience
- Participated in code reviews and agile sprints under senior developer mentorship, building foundational expertise in MongoDB, MySQL, and Git-based workflows
B.Tech in Computer Science & Engineering
Oriental College of Technology, Bhopal
Certifications
Featured Projects
Stuff I've actually built and shipped to production
Pabbly Email Marketing
Bulk Email & Automation System
Built this from zero - campaign builder, automation workflows, contact segmentation, analytics dashboard. The backend pushes 1M+ emails/day through Redis queues and PMTA/SMTP servers. Serving 50K+ active users.
Pabbly ChatFlow
WhatsApp Automation Platform
Users drag and drop nodes to create WhatsApp automation flows - conditions, delays, webhooks, API calls. I built both the React Flow frontend and the Redis-powered backend engine. Running 1L+ workflow executions daily with 20+ node types.
SourceAI
AI-Powered Support System
Customer support system where AI handles 70-80% of queries automatically. When it can't answer, it hands off to a human agent with full context. Also converts support emails into tickets via IMAP integration.
Side Projects
Flora
Animated Flower Shop Website
Animated flower shop website with scroll-triggered animations using GSAP and ScrollTrigger. Heavy focus on motion design and smooth interactions.
Case Studies
Click to explore how I build production-grade systems
Let's Work Together
Got a project idea or opportunity? Drop me a message!
Why work with me?
- 3+ years building production-grade SaaS products
- Systems handling 10K+ users & 1M+ daily operations
- Full stack: pixel-perfect UI to scalable backend
- Strong in system design & real-time architectures