Harshit Singh

Technologies

I've worked with a range of technologies related to app development and microservices.

Backend

Experience with Spring Boot, Spring Security, RESTful APIs, JWT.

Databases & Caching

Experience with MySQL, PostgreSQL, Redis.

DevOps & Testing

Experience with Docker, JUnit, Mockito.

Project 1

LStats — LeetCode Tracker

A full-stack LeetCode statistics tracking platform with real-time features. Includes friend system with leaderboards, group collaboration, live chat via WebSocket, and comprehensive progress tracking with heatmaps. Built with Spring Boot backend and Flutter mobile app with JWT authentication.

Spring Boot Flutter MySQL WebSocket JWT

Project 2

API Limiter

A comprehensive API rate limiting and monitoring platform. Features token-bucket based rate limiting using Redis, API key management per project, real-time usage logging and request tracking. Built with Spring Boot backend and React frontend with JWT-based authentication.

Spring Boot React MySQL Redis JWT

Project 1

LStats — Mobile App

The Flutter mobile client for the LStats platform. A fully-featured LeetCode tracker with friend leaderboards, group rooms, live chat, and beautiful progress heatmaps — all built with Flutter, Provider for state, and JWT-authenticated REST API integration.

Flutter Dart Provider Hive JWT

Project 2

Planz — Task Management App

A modern task management Flutter application with voice input, scheduling, and Firebase authentication. Features priority system, calendar view, 24-hour timeline, and natural language processing for voice commands. Includes soft delete system, task statistics, and local storage with Hive database.

Flutter Firebase Riverpod Hive Speech-to-Text

Project 3

Tempora — Weather App

A modern, minimalist Flutter weather application focused on clean UI and gesture-based navigation. Supports multiple saved cities with horizontal swipe navigation, location-based weather, and vertical swipe for detailed views. Features dynamic weather-based themes and smooth animations.

Flutter Dart OpenWeatherMap API Geolocator SharedPreferences

Project 4

NextUp — Release Tracker

A sleek Flutter app with premium black UI for tracking upcoming movies, TV shows, and anime releases. Features multi-source tracking via TMDB and AniList, local notifications, shareable lists, and blind mode for spoiler-free browsing. All data stored locally with offline-first architecture.

Flutter Provider Hive TMDB API Local Notifications