Uttam KumarSoftware Engineer
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Selected Work

Systems, APIs, and products built with intent.

A focused index of meaningful engineering work across backend services, SaaS architecture, integrations, and full-stack delivery.

Flagship SaaSActive development

CloudCampus

Multi-tenant school operations SaaS with role-based access, tenant isolation, academic workflows, and deployment-oriented architecture.

  • Java/Spring Boot backend with JWT/RBAC and tenant-aware workflows.
  • React portal, PostgreSQL/Flyway foundations, Docker, and GitHub Actions.
JavaSpring BootPostgreSQLReactDocker
Case Study →GitHub ↗
BackendComplete

BlogHub REST API

A production-style blogging backend designed around secure access, content workflows, and operational visibility.

  • JWT lifecycle, refresh-token rotation, Redis, Flyway, and role-based access.
  • Keyset pagination, nested comments, OpenAPI, Actuator, Docker, and CI.
Spring BootJWTRedisMySQL
View Project →GitHub ↗
Full stackComplete

ParkSmart

Parking management platform covering booking, slot selection, billing, payment checkout, and event-driven workflows.

  • Spring Boot, React, PostgreSQL, Redis, Kafka, and Stripe integration.
  • JWT auth, admin APIs, availability logic, and Docker Compose infrastructure.
JavaReactKafkaPostgreSQL
View Project →GitHub ↗
Realtime platformComplete

Realtime Tic-Tac-Toe

A full-stack game platform exploring multiplayer rooms, protected APIs, WebSocket updates, and stateful backend workflows.

  • Spring Boot backend with WebSocket/STOMP, JWT, Redis, and MySQL.
  • React/TypeScript client with bot mode, match history, and player stats.
Spring BootWebSocketReactRedis
GitHub ↗
Full stackComplete

Task Manager

Task workflow application with owner-scoped APIs, JWT authentication, search, filters, and a React dashboard.

  • Spring Boot, React/Vite, PostgreSQL, Docker Compose, and CI.
  • Clear ownership boundaries, status/priority workflows, and overdue detection.
JavaSpring BootReactPostgreSQL
GitHub ↗

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