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Rishabh Jain

Serving Notice Period | Backend Engineer | Java Spring Boot Kafka Microservices | Distributed Systems | REST APIs | PostgreSQL | Redis | Docker | 50K Events/sec | 2.8+ YOE | ReBIT

Bengaluru

3+ years of work experience

ReBIT | Reserve Bank Information Technology Pvt. Ltd.
Apr 20251 yr 7 mosPresent

Bengaluru

Designed and secured REST APIs using Spring Boot, Spring Security, and JWT with fine-grained RBAC, improving access-control robustness and reducing security review issues for regulated banking workloads. Built centralized activity logs and audit trails across services, enabling end-to-end traceability and helping internal teams cut investigation time for compliance queries by an estimated 30–40 percent. Optimized heavy reporting queries using JPA Criteria and PostgreSQL tuning, improving query performance by ~30 percent on datasets of 500K+ records and reducing report generation time for internal users. Developed a high-performance PDF/Excel reporting service generating 10K+ reports per day, with streaming-based response handling to ensure consistent performance under peak load. Implemented scalable bulk file processing with optimized multipart uploads and streaming, improving throughput and stability for large regulatory data ingestions. Added internationalization (i18n) support and strengthened authentication with MFA, improving user security posture and aligning with RBI security guidelines. Built an AI-based user assistance chatbot using Spring AI, integrated securely with backend services to answer contextual queries while respecting authorization boundaries. Containerized microservices with Docker and deployed them on OpenShift using Harbor, improving deployment consistency and enabling easier rollbacks and environment parity.
Apr 20251 yr 7 mosPresent

Regulatory Fintech Infrastructure — RBI Ecosystem • Owned and scaled a distributed reporting service generating 10,000+ compliance reports/day across 500K+ record datasets — reduced p95 query latency by 30% through composite index tuning, query plan analysis, and streaming. • Architected a bulk file processing pipeline with chunk-based streaming and adaptive backpressure, enabling large regulatory uploads without memory overflow — replaced a batch job that timed out under high load. • Built a centralised audit logging platform with structured event capture and async write paths, eliminating observability gaps across 8+ microservices for full regulatory traceability. • Engineered secure REST APIs with Spring Security, JWT, and fine-grained RBAC — designed a permission model enforcing role-based access across RBI-ecosystem backend services. • Containerised services with Docker and deployed on OpenShift with zero-downtime rolling deployments and environment-specific config management. • Led Java 8 → Java 21 and Spring Boot 2.x → 3.x migration — resolved compatibility issues, modernised deprecated APIs, and improved overall runtime performance.
VersionX
Oct 20247 mosApr 2025

Bengaluru

Designed and implemented an MFA system using QR, ID, and facial recognition for 50K+ active users, significantly hardening authentication flows for enterprise clients. Improved backend API performance by ~40 percent through PostgreSQL query optimization, schema refactoring, and efficient indexing strategies. Implemented real-time communication modules using WebSockets and MQTT for low-latency notifications and live updates, improving end-user responsiveness for critical workflows.
VersionX
Oct 20247 mosApr 2025

Identity & Authentication Platform • Delivered a multi-factor authentication platform supporting 50,000+ users — implemented QR-code, government ID verification, and facial recognition flows alongside TOTP and OTP-over-SMS, with secure token lifecycle management and replay protection. • Improved API response time by 40% through FastAPI migration and systematic PostgreSQL optimisation — profiled slow endpoints, added composite indexes, and eliminated N+1 patterns in high-frequency queries. • Implemented real-time bidirectional device communication using WebSockets and MQTT for low-latency event delivery to IoT-adjacent endpoints, replacing a polling-based approach.
Jio Platforms Limited (JPL)
Dec 20239 mosAug 2024

Navi Mumbai

Built scalable Spring Boot microservices handling high-traffic production workloads, focusing on clean API design, observability, and resilience patterns. Reduced data pipeline processing time by ~30 percent and API latency by ~20 percent by optimizing data flows, queries, and concurrency strategies. Implemented Redis caching layers, reducing database load by ~35 percent and improving p95 latency for key APIs serving high-volume traffic. Integrated Kafka for asynchronous, event-driven service communication, decoupling services and improving fault isolation across the system.
Jio Platforms Limited (JPL)
Sep 20233 mosNov 2023

Remote

Zolo NXG
Jul 20232 mosAug 2023

On-site

GitHub
@rishabhjain1309
LeetCode
@rishabh_jain1309

Rishabh’s AI Stack

anthropic apis
anthropic apis
claude code
claude code
claude
claude
github copilot
github copilot
openai
openai
ChatGPT
ChatGPT

Education

Lakshmi Narain College of Technology, Kalchuri Nagar, Raisen Road, Post Klua, Bhopal-462021

Bachelor's degree, Computer Science

Lakshmi Narain College of Technology, Kalchuri Nagar, Raisen Road, Post Klua, Bhopal-462021

20194 yrs2023
LNCT Group of Colleges, Bhopal

Bachelor of Technology, Computer Engineering

LNCT Group of Colleges, Bhopal

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Headline

Serving Notice Period | Backend Engineer | Java Spring Boot Kafka Microservices | Distributed Systems | REST APIs | PostgreSQL | Redis | Docker | 50K Events/sec | 2.8+ YOE | ReBIT

About

Backend Developer specializing in Java, Spring Boot, and Microservices architecture, with 2+ years of experience building scalable and high-performance backend systems for production environments. Currently working at ReBIT, developing secure REST APIs, event-driven systems using Kafka, and distributed backend services for critical banking applications. 🔹 Built systems generating 10K+ reports/day 🔹 Developed event-driven platforms processing 50K+ events/sec 🔹 Improved PostgreSQL query performance by 30%+ on large datasets (500K+ records) I have hands-on experience in: Java, Spring Boot, Microservices REST API Development & API Design Kafka, Event Driven Architecture PostgreSQL, MySQL, Redis Docker, OpenShift, AWS Strong focus on building low-latency, high-throughput systems with emphasis on scalability, fault tolerance, concurrency, and performance optimization. Previously worked on authentication systems, real-time communication platforms, and high-scale backend services. 💡 Technical Interests: Distributed Systems | System Design | High-Scale Backend Architecture | Concurrency Open to Backend Engineer / Java Developer opportunities. Immediate joiner (15 days notice period).

Location

Bengaluru

AI stack

anthropic apis

claude code

claude

github copilot

openai

ChatGPT

Work experience

Java Developer at ReBIT | Reserve Bank Information Technology Pvt. Ltd., Apr 2025 - Present · 1 yr 7 mos, Bengaluru, Designed and secured REST APIs using Spring Boot, Spring Security, and JWT with fine-grained RBAC, improving access-control robustness and reducing security review issues for regulated banking workloads. Built centralized activity logs and audit trails across services, enabling end-to-end traceability and helping internal teams cut investigation time for compliance queries by an estimated 30–40 percent. Optimized heavy reporting queries using JPA Criteria and PostgreSQL tuning, improving query performance by ~30 percent on datasets of 500K+ records and reducing report generation time for internal users. Developed a high-performance PDF/Excel reporting service generating 10K+ reports per day, with streaming-based response handling to ensure consistent performance under peak load. Implemented scalable bulk file processing with optimized multipart uploads and streaming, improving throughput and stability for large regulatory data ingestions. Added internationalization (i18n) support and strengthened authentication with MFA, improving user security posture and aligning with RBI security guidelines. Built an AI-based user assistance chatbot using Spring AI, integrated securely with backend services to answer contextual queries while respecting authorization boundaries. Containerized microservices with Docker and deployed them on OpenShift using Harbor, improving deployment consistency and enabling easier rollbacks and environment parity.

Back End Developer at Reserve Bank Information Technology (ReBIT), Apr 2025 - Present · 1 yr 7 mos, Regulatory Fintech Infrastructure — RBI Ecosystem • Owned and scaled a distributed reporting service generating 10,000+ compliance reports/day across 500K+ record datasets — reduced p95 query latency by 30% through composite index tuning, query plan analysis, and streaming. • Architected a bulk file processing pipeline with chunk-based streaming and adaptive backpressure, enabling large regulatory uploads without memory overflow — replaced a batch job that timed out under high load. • Built a centralised audit logging platform with structured event capture and async write paths, eliminating observability gaps across 8+ microservices for full regulatory traceability. • Engineered secure REST APIs with Spring Security, JWT, and fine-grained RBAC — designed a permission model enforcing role-based access across RBI-ecosystem backend services. • Containerised services with Docker and deployed on OpenShift with zero-downtime rolling deployments and environment-specific config management. • Led Java 8 → Java 21 and Spring Boot 2.x → 3.x migration — resolved compatibility issues, modernised deprecated APIs, and improved overall runtime performance.

Software Developer at VersionX, Oct 2024 - Apr 2025 · 7 mos, Bengaluru, Designed and implemented an MFA system using QR, ID, and facial recognition for 50K+ active users, significantly hardening authentication flows for enterprise clients. Improved backend API performance by ~40 percent through PostgreSQL query optimization, schema refactoring, and efficient indexing strategies. Implemented real-time communication modules using WebSockets and MQTT for low-latency notifications and live updates, improving end-user responsiveness for critical workflows.

Software Engineer at VersionX, Oct 2024 - Apr 2025 · 7 mos, Identity & Authentication Platform • Delivered a multi-factor authentication platform supporting 50,000+ users — implemented QR-code, government ID verification, and facial recognition flows alongside TOTP and OTP-over-SMS, with secure token lifecycle management and replay protection. • Improved API response time by 40% through FastAPI migration and systematic PostgreSQL optimisation — profiled slow endpoints, added composite indexes, and eliminated N+1 patterns in high-frequency queries. • Implemented real-time bidirectional device communication using WebSockets and MQTT for low-latency event delivery to IoT-adjacent endpoints, replacing a polling-based approach.

Full Stack Developer at Jio Platforms Limited (JPL), Dec 2023 - Aug 2024 · 9 mos, Navi Mumbai, Built scalable Spring Boot microservices handling high-traffic production workloads, focusing on clean API design, observability, and resilience patterns. Reduced data pipeline processing time by ~30 percent and API latency by ~20 percent by optimizing data flows, queries, and concurrency strategies. Implemented Redis caching layers, reducing database load by ~35 percent and improving p95 latency for key APIs serving high-volume traffic. Integrated Kafka for asynchronous, event-driven service communication, decoupling services and improving fault isolation across the system.

Associate Software Engineer at Jio Platforms Limited (JPL), Sep 2023 - Nov 2023 · 3 mos, Remote

Intern at Zolo NXG, Jul 2023 - Aug 2023 · 2 mos, On-site

Education

Bachelor's degree, Computer Science, Lakshmi Narain College of Technology, Kalchuri Nagar, Raisen Road, Post Klua, Bhopal-462021

Bachelor of Technology, Computer Engineering, LNCT Group of Colleges, Bhopal

Public links

github: https://github.com/rishabhjain1309

leetcode: https://leetcode.com/rishabh_jain1309