Siddhi Singh — Backend Developer

01 about

Backend developer working with Node.js, Express, MongoDB and Redis — focused on the infrastructure layer: authentication, job queues, webhooks, API gateways.

My projects target failure modes most CRUD apps skip: retry logic, rate limiting, queue recovery, idempotent webhook delivery. Hands-on with JWT, OAuth, BullMQ, Socket.io, and circuit breakers.

Early career. These are learning-stage builds, not production systems under live traffic — but built the way production systems should be.

02 skills

Languages

JavaScript (ES6+)
SQL
HTML5 / CSS3
Java

Backend

Node.js / Express
Socket.io
JWT Authentication
Google OAuth 2.0

Data

MongoDB / Mongoose
PostgreSQL(core)
Redis

Architecture

REST API design
API Gateway
RBAC
Queue-based processing (BullMQ)
Webhook systems
Rate limiting
Circuit breaker pattern
Distributed systems basics

Security

JWT / OAuth
bcrypt / Helmet / CORS
CSRF protection
Input validation (Zod)
HMAC verification

DevOps

Docker / Docker Compose
Git / GitHub
Postman / Swagger
Vercel / Render / Railway

03 projects

FEATURED /projectify in development

Project management platform with multi-tenancy, Kanban workflows, role-based access control, JWT auth, Google OAuth, and real-time updates over Socket.io.

Multi-tenancy
RBAC
Socket.io
JWT Authentication
Google OAuth
Analytics
Kanban
Redis

Node.jsExpressMongoDBRedisJWTSocket.io

→ github

GATE /api-gateway built

Centralized API gateway with JWT auth, Redis-based rate limiting, a circuit breaker pattern, and request proxying.

Node.jsRedisExpress

→ github

QUEUE /job-queue built

Background job processing service using Redis queues and BullMQ workers, with retries, dead-letter queues, and PostgreSQL persistence for async email delivery.

Node.jsBullMQRedisPostgreSQL

→ github

HOOK /webhook-service built

Webhook delivery platform with HMAC signature verification, exponential backoff retries, and event persistence for third-party integrations.

Node.jsRedisPostgreSQL

→ github

GET /ai-interview-prep built

AI-assisted interview preparation platform using the Google Gemini API for personalized technical question generation, with session management and auth.

Node.jsExpressGemini APIMongoDB

→ github