Backend Architect

Vinay Prajapati

Senior Backend Developer & Tech Entrepreneur

🚀 Architecting scalable solutions with cutting-edge technologies. From microservices to AI-powered backends, I build systems that drive innovation and handle millions of users.

Let's Connect View Projects

About Me

VP
📧 vinay91098@gmail.com
📱 9876386345
🌍 Bangalore, India
💻 GitHub

Passionate Backend Architect

With 5+ years of experience in backend development, I specialize in building robust, scalable systems that power modern applications. Currently serving as a Senior Backend Developer at HireQuotient, I've architected solutions that handle massive user loads while maintaining optimal performance.

My journey includes founding Sagaipoint, a full-stack matrimonial platform serving 1400+ active users, and contributing to major companies like Delhivery and Rigi. I'm passionate about leveraging cutting-edge technologies like AI/ML integration, microservices architecture, and cloud-native solutions.

I thrive on solving complex technical challenges and transforming innovative ideas into production-ready systems that make a real impact.

Professional Experience

Senior Back-End Developer
HireQuotient
March 2023 - Present | Bangalore, India
  • Built EasySource backend architecture from scratch and developed 40+ core features
  • Led development of AI-powered backend features incorporating machine learning capabilities for automated background checks and intelligent lead scoring
  • Implemented OAuth 2.0 authentication system for email, Calendly, Slack, and other service integrations
  • Integrated multiple Applicant Tracking Systems (ATS) and developed server-sent events (SSE) for real-time data updates
  • Established scalable infrastructure using GCP and AWS (Lambda, S3, EC2, Firebase) to handle increased user load securely
  • Optimized application performance by implementing Redis caching system, significantly enhancing data retrieval speeds
Back-End Developer
Rigi
Sept 2022 - Feb 2023 | Bengaluru, India
  • Developed critical backend components including IVR integration, report service, and push notification system
  • Built offerings APIs and real-time data streaming solutions with Redis caching implementation
  • Utilized AWS services (Lambda, S3, EC2) and cloud-native solutions to enhance system scalability and reliability
Founder / Developer
Sagaipoint
Oct 2020 - Sept 2022 | Ahmedabad, India
  • Built full-stack matrimonial website using ReactJS, NodeJS, Express, and MongoDB
  • Implemented robust security features and customized community-specific filters
  • Successfully served 1400+ active users with deployed microservices architecture on AWS
  • Enhanced reliability and scalability through strategic technical decisions
Developer (Java, Spring Boot)
Delhivery
March 2020 - Oct 2020 | Hyderabad, India
  • Developed Participant Account system with seamless service integration
  • Implemented AAA (Authentication, Authorization, Accounting) for enhanced data security
  • Designed database structures through ERD modeling and automated project setup with YAML configuration
  • Built solutions using Java, SpringBoot, PostgreSQL, Cassandra, Kafka, and ElasticSearch with CI/CD
Intern
SAC-ISRO
Jan 2019 - May 2019 | Ahmedabad, India
  • Analyzed satellite reflection data to create Vegetation Indices and improved classification accuracy
  • Developed PyQt-based application for data analysis and visualization of remote sensing data
  • Enhanced feature selection techniques on diverse datasets

Technical Expertise

Backend Technologies

NodeJS Java SpringBoot NestJS PHP Python

Cloud & DevOps

AWS GCP Lambda S3 EC2 Firebase RabbitMQ Redis

Databases

PostgreSQL MongoDB MySQL Cassandra ElasticSearch Kafka

Frontend Technologies

ReactJS jQuery Material-UI HTML/CSS JavaScript

Specializations

System Design Microservices API Development Data Structures OAuth 2.0 CI/CD

AI/ML Integration

Machine Learning Automated Background Checks Intelligent Lead Scoring Workflow Management

Leadership & Management

Team Leadership Technical Mentoring Code Reviews Agile/Scrum Project Management Stakeholder Management Cross-functional Collaboration

Architecture & Design Patterns

Event-Driven Architecture CQRS Event Sourcing Domain-Driven Design Hexagonal Architecture SOLID Principles Clean Architecture Service Mesh

Advanced Cloud & Infrastructure

Kubernetes Docker Swarm Istio Consul Terraform Ansible CloudFormation Infrastructure as Code

Security & Compliance

Zero Trust Architecture OWASP Security JWT/OAuth 2.0/OIDC API Security Data Encryption GDPR/CCPA Compliance Vulnerability Assessment Security Auditing

Performance & Scalability

Load Balancing Auto-scaling Performance Tuning Database Optimization Caching Strategies CDN Implementation Memory Management Profiling & Benchmarking

Data Engineering & Analytics

Apache Spark Apache Airflow Data Pipelines ETL/ELT Stream Processing BigQuery InfluxDB Apache Flink

Observability & Monitoring

Prometheus Grafana Jaeger Zipkin ELK Stack New Relic DataDog OpenTelemetry

Advanced Messaging & Communication

Apache Pulsar NATS gRPC GraphQL WebSockets Server-Sent Events Message Queuing Event Streaming

Enterprise Integration

Enterprise Service Bus API Gateway SOAP/REST APIs ESB Patterns Legacy System Integration Message Transformation Service Orchestration B2B Integrations

Quality Assurance & Testing

Test-Driven Development Behavior-Driven Development Contract Testing Load Testing Chaos Engineering A/B Testing Feature Flags Automated Testing

Modern Development Practices

GitOps Blue-Green Deployment Canary Deployment Feature Branching Continuous Integration Continuous Deployment Infrastructure Monitoring Site Reliability Engineering

Emerging Technologies

Serverless Computing Edge Computing WebAssembly Blockchain Integration IoT Backend Systems Real-time Systems High-Frequency Trading ML Ops

Featured Projects

HelpNet
Location-Based Platform

Developed a comprehensive full-stack application that connects help seekers with nearby helpers using advanced location tracking technology. The platform facilitates real-time matching and secure payment processing.

NodeJS Express ReactJS MongoDB Material-UI Google Maps API Razorpay
EasySource Backend
AI-Powered Recruitment Platform

Architected and built from scratch the complete backend infrastructure for EasySource, incorporating AI-powered features for automated background checks, intelligent lead scoring, and workflow management systems.

NodeJS Machine Learning OAuth 2.0 GCP AWS Redis RabbitMQ
Sagaipoint Platform
Full-Stack Matrimonial Website

Founded and developed a comprehensive matrimonial platform serving 1400+ active users. Implemented robust security features, customized community-specific filters, and deployed using microservices architecture on AWS.

ReactJS NodeJS Express MongoDB AWS Microservices

Ideas & Innovations

🌐
HelpNet
Location-Based Community Support Platform
A revolutionary platform connecting help seekers with nearby helpers in real-time. From medical emergencies to local services, HelpNet creates a community-driven ecosystem where people can give and receive assistance based on location, expertise, and availability.
Real-time Matching Location-based Community Support Emergency Services Social Impact
📚
TravelReads
Location-Based Book Rental Platform
A revolutionary book rental service for travelers at transport hubs. Rent physical books at airports and railway stations, return them at any partner location. Affordable short-term rentals with digital integration for seamless user experience.
Location-based Travel Tech Multi-location Returns Digital Integration Sustainable
💰
FinLite
Simple Finance for Everyone
A mobile app that explains complex financial news and data in super simple language. From mutual funds to stock market updates, company results to global market trends - making financial knowledge accessible to everyone without needing a finance degree.
Financial Education AI-Powered Multi-language Personalized Feed Beginner Friendly
⚽
TeamUp
Your Virtual Sports Team Anywhere
A mobile app that creates virtual profiles for every player and helps people find or build sports teams anywhere they go. From cricket to football, basketball to badminton - connect with local players and teams instantly.
Sports Networking Location-based Player Profiles Team Building Social Sports
🎒
PackPal
Smart Packing & Travel Gear Rental App
A mobile app that helps people plan what to pack for any trip AND lets them rent travel gear at their destination. Travel lighter and smarter with perfect packing lists and on-demand gear rental services.
Smart Packing Gear Rental Travel Planning Eco-friendly Local Pickup
🚗
SpotSwap
Airbnb for Parking Spots
An app that lets people rent out their empty parking spots to drivers who need short-term parking nearby. Connect unused driveways, office lots, and private spaces with drivers seeking convenient parking solutions.
Parking Sharing Real-time Booking Passive Income Smart Pricing Urban Mobility
🎯
CreatorAlign
Find the Perfect Creator for Your Brand
An AI-powered platform that analyzes creators' complete digital history to find only those who speak your brand values. Complete brand value protection through comprehensive screening and perfect creator-brand alignment.
AI Analysis Brand Protection Creator Matching Risk Assessment Digital History

System Architecture

🏗️
HelpNet Architecture
1B User Community Support System
Extreme-scale architecture for 1 billion users with 99.99% availability, real-time matching, and global distribution. CAP theorem optimized with eventual consistency and partition tolerance.
Real-time Matching Microservices Global Scale
📚
TravelReads Architecture
Global Book Rental Platform
Multi-region inventory management with real-time availability, QR tracking, and seamless cross-location returns. Optimized for high-frequency transactions and global distribution.
Inventory Management QR Tracking Multi-region
💰
FinLite Architecture
AI-Powered Financial Education
Real-time financial data processing with AI content generation, multi-language support, and personalized feeds. Designed for millions of concurrent financial data streams.
AI Processing Real-time Data Multi-language
⚽
TeamUp Architecture
Sports Social Network Platform
Location-based player matching with real-time team formation, skills tracking, and social networking. Optimized for mobile-first experience and instant connections.
Location Matching Social Network Mobile-first
🎒
PackPal Architecture
Smart Travel & Rental Platform
AI-driven packing recommendations with global gear rental marketplace. Real-time inventory tracking, logistics optimization, and predictive demand modeling.
AI Recommendations Logistics Predictive
🚗
SpotSwap Architecture
Real-time Parking Marketplace
Ultra-low latency parking spot matching with real-time availability, dynamic pricing, and IoT integration. Optimized for urban-scale demand fluctuations.
Ultra-low Latency Dynamic Pricing IoT Integration
🎯
CreatorAlign Architecture
AI Brand-Creator Matching
Advanced AI pipeline processing billions of social media posts with real-time brand alignment scoring. Machine learning models for risk assessment and reputation monitoring.
AI Pipeline Reputation Monitoring Risk Assessment

Education & Certifications

B.Tech in Computer Science Engineering
LPU (Lovely Professional University)
May 2019 | Jalandhar, India
Diploma in Computer Engineering
Nirma University
May 2016 | Ahmedabad, India
Advanced Software Development
Scalar Academy
May 2019 - 2020

Data Structures, System Design, Databases, Java, SpringBoot, ReactJS

Advanced Software Development
UpGrad
May 2019 - Jan 2020

ReactJS, Java, SpringBoot, Backend Integration

Technical Deep Dive

System Design & Architecture

Microservices Architecture

Designed and implemented scalable microservices using Docker containers, Kubernetes orchestration, and service mesh patterns. Built resilient systems with circuit breakers, load balancing, and auto-scaling capabilities.

Docker Kubernetes Service Mesh Load Balancing

Distributed Systems

Expertise in building fault-tolerant distributed systems with eventual consistency, CQRS patterns, and event sourcing. Implemented distributed caching, message queues, and consensus algorithms.

CQRS Event Sourcing CAP Theorem Consensus

Scalability Patterns

Applied horizontal and vertical scaling strategies, database sharding, read replicas, and CDN implementation. Optimized systems to handle millions of concurrent users with sub-second response times.

Sharding Read Replicas CDN Caching

Data Structures & Algorithms

Advanced Data Structures

  • B-Trees & B+ Trees for database indexing
  • Trie structures for autocomplete features
  • Bloom filters for efficient lookups
  • Consistent hashing for distributed systems
  • Skip lists for sorted data structures

Algorithm Optimization

  • Dynamic programming for complex problem solving
  • Graph algorithms for social networks
  • String matching algorithms for search
  • Sorting & searching optimizations
  • Greedy algorithms for resource allocation

Complexity Analysis

  • Big O notation mastery
  • Time & space complexity optimization
  • Amortized analysis techniques
  • Performance benchmarking
  • Algorithm selection strategies

NodeJS Mastery

Core NodeJS

Deep understanding of Node.js event loop, non-blocking I/O, streams, and buffer management. Built high-performance applications handling thousands of concurrent connections.

// Event-driven architecture const EventEmitter = require('events'); // Stream processing const stream = require('stream');

Express.js & Frameworks

Advanced middleware development, custom authentication systems, rate limiting, and API security. Built RESTful and GraphQL APIs with comprehensive testing suites.

Express.js NestJS Fastify Koa.js

Performance Optimization

Memory leak detection, CPU profiling, cluster mode implementation, and worker threads for CPU-intensive tasks. Optimized applications for maximum throughput.

99.9% Uptime
<100ms Response
10k+ RPS

MongoDB & Database Design

Advanced MongoDB

  • Complex aggregation pipelines with $lookup, $unwind, $group
  • Indexing strategies for query optimization
  • Replica sets and sharding configuration
  • GridFS for large file storage
  • Change streams for real-time updates
  • Transaction management across collections

Schema Design Patterns

  • Embedded vs Referenced document strategies
  • Polymorphic pattern implementation
  • Bucket pattern for time-series data
  • Tree structures (Materialized Path, Nested Sets)
  • Denormalization for read optimization
  • Schema versioning and migration strategies

Performance Tuning

  • Query execution plan analysis
  • Index optimization and compound indexes
  • Memory usage optimization
  • Read/Write concern configuration
  • Connection pooling optimization
  • Monitoring with MongoDB Compass

Cloud Architecture & DevOps

AWS Expertise

Compute
EC2, Lambda, ECS, Fargate
Storage
S3, EBS, EFS, Glacier
Database
RDS, DynamoDB, ElastiCache
Network
VPC, ALB, CloudFront, Route53

Google Cloud Platform

Compute
Compute Engine, Cloud Functions
Data
Cloud Storage, Firestore, BigQuery
AI/ML
Cloud ML Engine, Vision API

CI/CD & Infrastructure

Jenkins Docker Kubernetes Terraform GitHub Actions GitLab CI

Open Source Contributions

🚀 Featured Repositories

View All on GitHub
microservices-architecture

Complete microservices setup with Docker, Kubernetes, and service discovery

🌟 NodeJS 🔧 Docker ⚡ Kubernetes
mongodb-optimization-toolkit

Performance optimization tools and best practices for MongoDB

🗄️ MongoDB 📊 Analytics 🔧 Tools
nodejs-performance-boilerplate

High-performance Node.js application template with best practices

⚡ NodeJS 🚀 Performance 📈 Scalable
system-design-patterns

Implementation of common system design patterns and architectures

🏗️ Architecture 📐 Patterns 📚 Educational

Let's Connect

Ready to build something amazing together? I'm always open to discussing new opportunities, innovative projects, and technical collaborations.

📧
Email
📱
Phone
💼
LinkedIn
🐙
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