Building scalable SaaS products, enterprise platforms, and modern web & mobile experiences.
Portfolio · LinkedIn · Email · LeetCode
- 🔭 Software Engineer at Tezminds, building enterprise CRM and SaaS platforms with Go, PostgreSQL, and React
- 🏫 Founder & Developer of Skolio — a production-ready, multi-tenant School ERP SaaS
- ⚡ Creator of Reqtra — an API development platform inspired by Postman
- 📦 Author of pgkit — an open-source PostgreSQL helper library for Go
- 🧮 800+ problems solved across LeetCode, HackerRank, and GeeksforGeeks
- 💡 I specialize in Go backend development — REST APIs, authentication, RBAC, multi-tenant architecture, and dynamic analytics engines — while working across the full stack with React, Next.js, Flutter, and React Native
🌐 skolio.online — A production-ready School ERP platform with dedicated apps for Administrators, Teachers, Parents, Students, and Super Admins.
| Area | Modules |
|---|---|
| Academics | Student Management · Attendance · Timetable · Homework · Examination Management |
| Administration | Fee Management · School Settings · User & Role Management (RBAC) · Academic Administration |
| Engagement | Parent Portal · Push Notifications (FCM) · Email / SMS / WhatsApp Business integration |
| Insights | Analytics Dashboard · Reporting |
| Apps | Admin Web App · Teacher Mobile App · Parent Mobile App |
Stack: Go React Next.js Flutter React Native PostgreSQL MongoDB Redis Firebase AWS
🌐 reqtra.skolio.online — A modern API development and testing platform inspired by Postman.
- 🗂️ Workspaces & Collections — organize APIs across projects
- 🔐 Auth built in — API Keys, Bearer Tokens, JWT
- 🌍 Environment Variables — switch configs without editing requests
- 🕘 Request History — replay and inspect past calls
- 🤝 Team Collaboration — coming soon
Stack: Go React MongoDB JWT REST APIs
Building enterprise CRM products and SaaS platforms.
eGrowthEngine CRM (Enterprise CRM Platform)
- Designed a metadata-driven Analytics Module powering KPI dashboards, campaign analytics, email analytics, and reporting
- Built a dynamic dashboard builder where users compose analytics widgets through configurable metadata — tables, columns, filters, grouping, aggregations, and chart types
- Developed a runtime SQL Query Builder that generates optimized PostgreSQL queries from stored widget configurations
- Built reusable React + Material UI components for charts, KPI cards, filters, and reports
- Optimized reporting APIs and SQL queries for large datasets
QA Recorder Chrome Extension
- Built a Chrome Extension that combines screen recording (MediaRecorder API), Canvas-based screenshot annotation, and automatic console/network log capture into a single bug report
- Significantly reduced issue-reproduction time between QA engineers and developers
| Category | Technologies |
|---|---|
| Languages | Go · JavaScript · TypeScript · Java · Dart · SQL |
| Backend | Go · Gin · Node.js · Express.js · gRPC · REST APIs · JWT · RBAC |
| Frontend | React · Next.js · Redux Toolkit · RTK Query · Material UI · Tailwind CSS |
| Mobile | Flutter · React Native · Expo |
| Databases | PostgreSQL · MongoDB · Redis · MySQL |
| Cloud & DevOps | AWS · Docker · Firebase · Linux · Git · GitHub |
| AI-Assisted Dev | Claude · ChatGPT · Gemini · GitHub Copilot · Google AI Studio |
pgkit — PostgreSQL Helper Library for Go
A Go library that cuts repetitive PostgreSQL boilerplate: reusable query helpers, transaction utilities, and database abstractions for production applications.
📖 Docs: pkg.go.dev/github.com/Rajangupta9/pgkit
800+ problems solved across competitive programming platforms:
Distributed Systems · Microservices · Kubernetes · System Design · Event-Driven Architecture · High-Performance Go
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