Backend Developer · Java & Spring Boot · Electronic Trading Systems · Distributed Systems

I'm a backend developer with 2.5+ years of production experience building low-latency trading systems and distributed backend infrastructure at Nirvana Solutions India Pvt Ltd.

My core expertise is in Java and C#, with deep hands-on experience in FIX Protocol (4.2/4.4), QuickFIX/J, Spring Boot, and Apache Kafka. I design systems where correctness, concurrency, and throughput matter — order routing engines, execution handlers, and real-time data pipelines.

I hold a B.Tech (Hons) in Computer Science from Poornima College of Engineering (CGPA: 9.3/10) and was a Google Developer Student Club (GDSC) Lead, running technical workshops for 600+ members.

Languages

Backend Frameworks & Architecture

Messaging & Protocols

Databases & Tools

Domain Expertise

Java · Spring Boot · QuickFIX/J · REST API · Docker

A self-contained FIX 4.4 trading simulator built with QuickFIX/J and Spring Boot. Implements a mock exchange acceptor, in-memory order book, and REST API for order lifecycle management (place, cancel, query). Containerized with Docker Compose for zero-dependency local execution.

• FIX 4.4 initiator + acceptor with full session management
• REST endpoints for new order, cancel, and order status
• In-memory order repository with thread-safe order book operations
• Swagger/OpenAPI documentation for all endpoints

Java 17 Spring Boot 3 QuickFIX/J Docker JUnit 5 Maven

Spring Boot · Redis · Spring AOP · System Design

A production-grade distributed rate limiting library implementing Token Bucket and Sliding Window Log algorithms. Exposed as a custom @RateLimited Spring annotation using AOP — drop-in for any Spring Boot application.

• Two configurable algorithms: Token Bucket and Sliding Window
• Redis-backed distributed counter store (works across multiple instances)
• Custom annotation-based API via Spring AOP
• Load tested at 10,000 req/s with sub-2ms p99 latency

Spring Boot 3 Redis Spring AOP JUnit 5 Docker Compose

Spring Boot · Apache Kafka · Spring Cloud · Microservices · Docker

A 3-service event-driven order management system demonstrating asynchronous inter-service communication, API gateway routing, and circuit-breaker patterns.

• Services: order-service, inventory-service, notification-service
• Apache Kafka message bus with guaranteed delivery semantics
• Spring Cloud Gateway for API routing and cross-cutting concerns
• Resilience4j circuit breaker on all synchronous service calls
• Full Docker Compose setup (services + Kafka + PostgreSQL)

Spring Boot 3 Apache Kafka Spring Cloud Gateway Resilience4j PostgreSQL Docker Compose

C# · .NET Core · Data Structures · File I/O

A configuration-driven XML generation engine to automate complex data reporting workflows at Nirvana Solutions. Eliminated manual processing bottlenecks across multiple data pipelines.

• Configuration-driven template engine — zero code change for new report types
• Optimized file processing with custom data structure selection
• Achieved 30–40% reduction in execution time on large datasets

C# .NET Core File I/O Data Structures

Backend Developer · Nirvana Solutions India Pvt Ltd · Jan 2023 – Present

• Architected high-performance Java and C# trading services with 99.9% uptime under heavy production load
• Engineered FIX Protocol order routing engines enabling low-latency transaction processing and high-throughput real-time data pipelines
• Designed RESTful APIs between core backend modules and front-end interfaces, reducing integration latency by 25%
• Resolved complex multithreading and concurrency bugs via deep log analysis and profiling
• Refactored legacy codebases and SQL queries, cutting resource consumption by ~35%

Software Developer Intern · Dept. of IT & Communication, Govt. of Rajasthan · Jul 2022 – Dec 2022

• Built REST API backend for the iSTART mobile application handling real-time startup data and funding workflows
• Managed PostgreSQL schemas and implemented secure server-side authentication

📊 GitHub Stats

I'm actively looking for backend engineering roles in fintech, distributed systems, and high-performance Java/Spring Boot environments.

• 📧 ridhvikul07@gmail.com
• 💼 LinkedIn
• 📍 Jaipur, Rajasthan, India · Open to remote and relocation