LUCKY KUMARI

Backend Software Engineer

Bihar, India 1+ yrs exp 84 · Excellent

About

Backend Software Engineer with 1 year of experience building distributed systems and event-driven microservices using Java and Spring Boot. Hands-on experience in designing RESTful APIs, optimizing database queries, and building real-time, scalable backend systems in production environments. Proficient in MySQL, PostgreSQL, Redis, AWS, Elasticsearch, and Kafka, with strong data structures and algorithms skills demonstrated by 300+ LeetCode problems solved. Contributed to product-scale architectures and distributed backend systems in production environments.

Skills & Expertise (31)

SQL Intermediate

5.4/10

Years Exp

Postman Intermediate

5.4/10

Years Exp

OOP Intermediate

5.4/10

Years Exp

Data Structures & Algorithms Intermediate

5.4/10

Years Exp

Git Intermediate

5.4/10

Years Exp

Postgresql Intermediate

5.4/10

Years Exp

MySql Intermediate

5.4/10

Years Exp

Microservices Intermediate

5.4/10

Years Exp

REST APIs Intermediate

5.4/10

Years Exp

Java Intermediate

5.4/10

Years Exp

JavaScript Intermediate

5.4/10

Years Exp

Spring Boot Intermediate

5.4/10

Years Exp

Concurrency Intermediate

4.6/10

Years Exp

Swagger Intermediate

4.6/10

Years Exp

Typescript Intermediate

4.6/10

Years Exp

React.js Intermediate

4.6/10

Years Exp

Elasticsearch Intermediate

4.6/10

Years Exp

OAuth2 Intermediate

4.6/10

Years Exp

JWT Intermediate

4.6/10

Years Exp

Spring Security Intermediate

4.6/10

Years Exp

Docker Intermediate

4.6/10

Years Exp

Hibernate Intermediate

4.6/10

Years Exp

JPA Intermediate

4.6/10

Years Exp

WebRTC Intermediate

4.6/10

Years Exp

WebSocket Intermediate

4.6/10

Years Exp

Redis Intermediate

4.6/10

Years Exp

Kafka Intermediate

4.6/10

Years Exp

Node.js Intermediate

4.6/10

Years Exp

AWS (S3 AWS (RDS AWS (EC2

Work Experience

Software Development Engineer (Backend)

Yulu

Jan 2025 - Present

Worked on Notification Orchestration Service (FCM-based) and geo-fencing & Ride Validation Service supporting real-time ride operations in a microservices architecture. Implemented geo-fencing validation logic using Redis Geo and PostGIS to ensure rides start and end only within authorized zones, improving validation accuracy by 28%. Contributed to real-time location processing using Apache Kafka for continuous GPS tracking handling high-frequency ride events. Integrated Firebase Cloud Messaging (FCM) for ride lifecycle notifications and alerts, improving notification delivery reliability by 22%. Added ride validation checks handling GPS inaccuracies and fallback logic to improve system reliability and reduce failed ride events by 18%. Used Redis caching to improve performance, reducing database load by 32% and improving API response latency by approximately 45 ms.

Software Development Engineer Intern (Backend)

MountBlue Technologies

Oct 2024 - Dec 2024

Built and deployed multiple end-to-end backend projects using Java and Spring Boot, implementing REST APIs and microservices-based workflows. Worked on API development, database schema design, and query optimization using MySQL and PostgreSQL, improving query performance by 26%. Gained hands-on experience in project deployment, backend system design, and strengthening foundations in data structures and OOP through iterative development and code reviews.