---
title: "Prerna Jangra - Software Engineer – Backend Development in Gurugram | Tal"
description: "Meet Prerna Jangra, Software Engineer – Backend Development @ Rosmerta Technologies Limited | Maven, Spring MVC, IntelliJ IDEA based in Gurugram."
image: "https://tal.club/meet/user-8299/share-image"
---

# Prerna Jangra on Tal

## Headline

Software Engineer – Backend Development @ Rosmerta Technologies Limited \| Maven, Spring MVC, IntelliJ IDEA

## About

Java Backend Developer with 2\+ years of experience designing and delivering production\-grade REST APIs, microservices, and database\-optimized backend systems across VTS, BFSI, and enterprise domains\. Currently at Rosmerta Technologies, I have engineered 100\+ APIs using Java and Spring Boot, led Java 11→17 platform upgrades across 10\+ live production services, and architected a Central SSO Login Service deployed across 19 Indian states\. I specialize in building secure, scalable backend systems with a strong focus on performance, clean architecture, and real\-world impact\. 🔧 Core Skills: Java 17/21 · Spring Boot · Spring Security · JWT · REST APIs · Microservices · PostgreSQL · Redis · Apache Kafka · Docker · JUnit 5 · Hibernate · Git · CI/CD 🏗️ Domains: Government Platforms · BFSI · Vehicle Tracking \(AIS 140\) · Enterprise SaaS 🌱 Currently upskilling in: AWS · Advanced Microservices · Cloud\-native Kafka 📌 Projects: github\.com/prrernaa 📩 Open to Java Backend roles \(SE/SSE\) at product\-based companies — remote or Gurgaon/Delhi NCR

## Location

Gurugram

## Work experience

Software Engineer – Backend Development at Rosmerta Technologies Limited, Feb 2024 \- Present · 2 yrs 5 mos, Gurugram, Haryana, India, Architected and delivered 100\+ production RESTful APIs using Spring Boot \(Controller\-Service\-Repository\) across Ticketing, AIS 140, VTS, MIS, BFSI, and Visitor Management platforms serving government and enterprise clients Led Java 11 → 17 platform migration across 10\+ live production services including MIS Stock, Pravesh VMS, Ticketing, AIS 140 SS, and Audit Trail — modernizing the entire backend platform Optimized PostgreSQL query performance by 30–40% through SQL function refactoring, composite indexing, and query plan tuning — improving report speed for 50\+ daily users Engineered Central SSO Login Service using Spring Security & JWT, enabling single\-auth access to AIS 140 data across multiple Indian states from one unified dashboard Executed AIS 140 state migrations \(RAPL → SS\) across 7 states \(TN, AP, J&K, HR, CH, GJ, HP\) — platform now live in 19 Indian states in production Implemented JWT authentication & fine\-grained RBAC via Spring Security across all multi\-tenant APIs Built bulk upload pipelines for dealers, vehicles & permits using Apache POI — reducing manual data entry by 70% and enabling Excel exports for 7\+ report types used by 50\+ users Integrated real\-time SMS \(Sensorise\) & Firebase push notifications improving Ticketing response rates by 30–40% across 500\+ monthly tickets Collaborated across QA, iOS, Android, frontend & DBA teams in agile delivery cycles

Student at Global Institute of Technology & Management,Gurugram \(GITM\), Sep 2020 \- Jan 2024 · 3 yrs 5 mos, Gurugram, Haryana, India

Full Stack Developer at Bharat Intern, Aug 2023 \- Sep 2023 · 2 mos, Remote

Web Development and Designing at Code Casa, Jul 2023 \- Aug 2023 · 2 mos, work from home

## Education

Bachelor of Technology \- BTech, Computer science engineering, Global institute of technology and management farrukhnagar gurugran

12, Pcm, Euro International School Rewari

[View the original profile](https://tal.club/meet/user-8299)

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