Summary
Backend Developer with 2+ years of experience building scalable, high-throughput microservices for e-commerce and last-mile delivery at Speedbae. Skilled in designing inventory consistency, order lifecycle orchestration, and real-time tracking systems handling thousands of daily transactions. Strong focus on performance optimization, data integrity, and fault-tolerant system design using Java, Spring Boot, MySQL, and Cassandra.
Professional Experience
Backend Developer — Product Service Team
Mar 2024 – Present
Speedbae (E-commerce Delivery Startup)
Bangalore, India
- Order Lifecycle: Designed end-to-end order services (placed → confirmed → packed → dispatched → delivered) using Spring Boot; reduced processing latency from 4.2s → 1.8s (~57%) by optimizing service flow and JPA queries.
- Inventory System: Engineered inventory reservation and release service handling 10,000+ SKUs with transactional safeguards; reduced stock discrepancies by ~35% and cut stock lookup latency from 380ms → 210ms via query and indexing optimization.
- Real-Time Tracking: Built event-driven tracking pipeline writing delivery updates to Cassandra; slashed tracking latency from ~40s → ~12s for 5,000+ daily deliveries, with WebSocket-based live ETA updates.
- Last-Mile Delivery: Designed delivery agent assignment and slot management APIs, reducing unassigned order backlog by ~20%; implemented failure-reason tracking and retry workflows improving re-attempt success by ~18%.
- API Design: Designed and maintained RESTful APIs consumed by mobile and web clients; achieved 99.5%+ uptime with structured exception handling, retry mechanisms, and monitoring.
- DevOps & Reliability: Automated CI/CD using Docker & Jenkins, cutting deployment time from 45 min → 12 min; wrote unit and integration tests achieving 80%+ code coverage; owned staging validation and production readiness.
Projects
- Comprehensive REST API for full-featured e-commerce platform with 30+ endpoints, 6 core modules (Auth, Customer, Seller, Product, Cart, Order) handling products, inventory, orders, and session-based authentication.
- Built AI-powered tool converting natural language → API calls with reasoning layer for request validation, follow-up questions, and execution flow with user confirmation.
- Enterprise REST API generating structured PDFs (invoices, reports, certificates) from JSON payloads with production-grade error handling, validation, <500ms latency, and 10K+ PDF/hour throughput capacity.
Technical Skills
Backend
Java, Spring Boot, JPA/Hibernate, REST APIs, Microservices Architecture, WebSocket
Databases
MySQL, Cassandra
System Design
API Design, Data Consistency, Event-Driven Systems, Caching, Fault Tolerance
Frontend
React.js, JavaScript (ES6+), HTML5, CSS3, Vue.js, Chart.js
DevOps & Cloud
Docker, Kubernetes, Jenkins, CI/CD, AWS, GCP, Git, Bitbucket
Tools
Postman, JIRA, Swagger/OpenAPI, Agile/Scrum
Education
B.Tech, Computer Science and Engineering
2020 – 2024
CEC, Jharkhand
CGPA: 7.93 / 10
Certifications
- Java Programming — Intellipaat (2023)
- Walmart Advanced Software Engineering — Forage (2024)