Available for new opportunities

Hi, I'm Pranav Singh

Java Backend Developer

Building scalable, secure and high-performance microservices with Spring Boot, Kafka and Cloud-native architectures.

Years Experience

45%

API Latency Reduced

40%

Infra Cost Saved

99.9%

Uptime

View My Work Get in Touch

☕JAVA

🌱SPRING

☁️AWS

🐳DOCKER

⚙️CI/CD

📨KAFKA

⚡REDIS

🗄️MYSQL

01 — About

Professional Summary

Results-driven Java Backend Developer with 3 years of hands-on experience designing, developing and deploying scalable, secure, high-performance RESTful microservices and distributed systems for enterprise-grade SaaS applications.

I specialize in Java 8/11/17/21, Spring Boot, Spring Cloud, Spring Security, Hibernate/JPA, Apache Kafka, RabbitMQ and event-driven architecture, with working knowledge of AWS, Docker andCI/CD for cloud-native applications.

Proven impact — reduced API latency by 45%, cut infrastructure costs by 40% and strengthened security by 40% via OAuth2 and JWT. Experienced in production support, incident management and legacy JDK migration (JDK 8 → JDK 21), maintaining 99.9%+ uptime.

⚡

Performance

Reduced API latency by 45% with OpenSearch & Redis caching strategies.

🔐

Security

Designed OAuth2 + JWT auth with Spring Security across multi-tenant SaaS.

☁️

Cloud Native

AWS (EC2, S3, RDS, Lambda), Docker, GitHub Actions, Jenkins CI/CD.

🚀

Scale

Serving 50+ enterprise clients on B2B SaaS integration platform.

02 — Skills

Technical Stack

Languages

Java 8/11/17/21 Groovy SQL

Backend Frameworks

Spring Boot Spring MVC Spring Security Spring Data JPA Hibernate ORM Spring Batch Spring Cloud Spring AOP Microservices REST SOAP

Cloud & DevOps

AWS (EC2, S3, RDS) CloudWatch Lambda IAM WAF Docker CI/CD Jenkins GitHub Actions Maven Gradle

Databases

MySQL PostgreSQL Oracle MongoDB Redis OpenSearch Elasticsearch

Messaging & Streaming

Apache Kafka RabbitMQ Event-Driven Pub/Sub Async Messaging

Security

OAuth2 JWT Spring Security SSL/TLS RBAC Multi-Tenant

AI Integration

Spring AI Claude Code Gemini Ollama (Local LLM)

API & Tools

REST SOAP JSON/XML SFTP Swagger/OpenAPI Postman API Gateway Feign Client

03 — Experience

Work Experience

Software Engineer — Java Backend Developer

Feb 2024 – Present

JusTransform • Remote, India

Architected scalable Java microservices using Spring Boot, Spring Cloud andREST APIs for an enterprise B2B SaaS integration platform serving 50+ clients.
Designed OAuth2 and JWT-based authentication with Spring Security, improving application security by 40% and eliminating unauthorized access in production.
Built OpenSearch-powered full-text search module managing 50+ Business IDs, improving search accuracy from 60% to 100% and reducing query latency by 45%.
Engineered Redis caching with TTL-based eviction, reducing MySQL load by 70% and decreasing lookup response time from 200ms to under 20ms.
Led LookupV3 microservice migration from MongoDB to MySQL, cutting monthly cloud infrastructure costs by 40%.
Upgraded Java codebase from JDK 8 to JDK 21; resolved 3 critical P0/P1 production incidents within SLA, maintaining 99.9%+ uptime.

Software Engineer — Java Developer

May 2023 – Jan 2024

Alignbits LLC • Remote, India

Developed RESTful APIs and microservices using Java, Spring Boot andSpring MVC for multiple client integrations, improving system performance by 20%.
Built Groovy-based integration services and ETL pipelines for data transformation and routing, increasing cross-system throughput by 30%.
Executed Spring Batch pipelines for large-scale data processing workflows, reducing batch execution time by 30%.
Triaged and resolved 30–40% of weekly high-priority production bugs, lowering overall defect rate by 25%.
Wrote unit and integration tests using JUnit 5 and Mockito following TDD; optimized slow SQL queries on MySQL and PostgreSQL via indexing and tuning.

04 — Projects

Featured Projects

🎬

BookMyShow Clone

Movie Ticket Booking System • Microservices

A full-featured movie ticket booking system built with 5 independently deployable microservices: User, Movie, Ticket, Review andNotification. Implements service discovery, centralized routing, JWT-based RBAC and asynchronous email delivery via RabbitMQ.

Spring Cloud Eureka for service discovery + API Gateway routing
Feign Client for inter-service REST communication
JWT auth with role-based access control (RBAC) across all services
Dynamic seat pricing (Classic & Premium) with concurrent double-booking prevention
RabbitMQ + JavaMailSender for async booking confirmation emails

Java Spring Boot Spring Cloud Spring Security JWT RabbitMQ MySQL JPA / Hibernate Docker

View on GitHub →

🏦

Banking System

Secure Transactional Backend

Spring Boot-based banking application with account management, secure transactions andJWT authentication.

Spring Boot Spring Security JWT MySQL

View on GitHub →

📨

Multi-Protocol Microservices

Event-Driven Communication

Microservices ecosystem with REST, gRPC andKafka-based async messaging between services.

Spring Cloud Kafka gRPC Docker

View on GitHub →

🤖

RAG with Spring AI

LLM-Powered Knowledge Retrieval

Retrieval-Augmented Generation pipeline built with Spring AI, integrating local LLMs and vector stores.

Spring AI Ollama Vector DB Java

View on GitHub →

🐰

RabbitMQ Mastery

Async Messaging Patterns

Hands-on implementations of work queues, pub/sub, routing, topics andRPC with RabbitMQ in Spring Boot.

RabbitMQ Spring Boot AMQP

View on GitHub →

🐛

Shri Ram Pest Control

Client Website • Live in Production

Designed and shipped a fully responsive marketing website for a real pest-control client, deployed on a custom domain with SEO, service pages and contact integration.

Next.js React Tailwind SEO Custom Domain

Visit Live Site →

💬

WhatsApp Message Sender

Bulk Outreach Tool • Live Demo

Web tool to send personalized WhatsApp hiring messages from an Excel/CSV of HR contacts — parses spreadsheets in-browser and queues outbound messages with one click.

Next.js React xlsx Vercel

Live Demo → GitHub →

05 — Education