Gunji Sivannarayana
Hyderabad
Summary
Senior Software Engineer with 14+ years of experience designing, integrating, and supporting enterprise-scale Warehouse Management and Carrier Execution platforms in high-volume retail and omnichannel fulfillment environments. Expertise in OMS–WMS–WCS integrations, parcel shipping execution, rate shopping, transit-time modeling, carrier charge calculation, manifest generation, UPS/FedEx API integrations, and reverse logistics integration. Experienced in Spring Boot microservices, REST APIs, MQ-based event-driven systems, Docker containerization, and Azure-based environments.
Overview
14
14
years of professional experience
Work History
Sr. Software Engineer
GAP Inc.
Hyderabad
05.2019 - Current
- Own and support enterprise-scale WMS ensuring high availability across high-volume fulfillment centers.
- Design and develop Spring Boot microservices supporting warehouse execution and carrier orchestration workflows.
- Implement integrations between WMS, OMS, and WCS systems ensuring end-to-end order lifecycle integrity.
- Contribute to carrier rate shopping logic based on cost, transit time, and SLA commitments.
- Implement transit-time estimation and carrier charge calculation models.
- Integrate with UPS and FedEx APIs for rating, shipment creation, manifest execution, and tracking.
- Design, develop, test, and certify carrier-compliant shipping labels using MarkMagic.
- Develop asynchronous shipment event processing using MQ ensuring idempotent processing.
- Containerize microservices using Docker and support Azure-based deployments.
- Integrate Salesforce returns workflows with WMS ensuring accurate inventory reconciliation.
Java Lead Technical Analyst
Manhattan Associates
Bangalore
04.2014 - 05.2019
- Led development and enhancement of Manhattan WMOS implementations for enterprise retail clients.
- Delivered warehouse modules including receiving, waving, manifest, shipping, invoicing, and label generation.
- Worked on parcel shipping workflows and carrier integrations.
- Supported production systems during peak seasonal volumes.
- Participated in requirement gathering, estimation, and technical design.
Java Developer
New Creation Information Technologies
Bangalore
01.2012 - 03.2014
- Developed enterprise web applications using Spring Framework and Hibernate.
- Implemented full-stack modules including backend logic and database integration.
- Performed code reviews and coordinated with QA teams.
Education
Master of Computer Applications (MCA) -
JNTU Kakinada
Bachelor of Science - Computers
ANU
GunturSkills
- Warehouse Management Systems (WMS)
- Carrier Management & Shipping Execution
- Rate Shopping & Transit Time Logic
- Carrier Charge Calculation & SLA Optimization
- UPS / FedEx API Integration
- Manifest Processing & Compliance
- MarkMagic Label Design, Development & Certification
- Reverse Logistics & Returns Integration (Salesforce)
- OMS / WCS System Integrations
- Spring Boot Microservices & REST APIs
- Event-Driven Architecture (MQ)
- Docker & Azure Cloud (Working Knowledge)
- Production Support & Incident Management
- Java
- Spring Boot
- Spring
- Microservices
- REST APIs
- Distributed Systems
- MQ
- Docker
- Azure (Working Knowledge)
- Oracle
- MySQL
- Maven
- Eclipse
Timeline
Sr. Software Engineer
GAP Inc.
05.2019 - Current
Java Lead Technical Analyst
Manhattan Associates
04.2014 - 05.2019
Java Developer
New Creation Information Technologies
01.2012 - 03.2014
Master of Computer Applications (MCA) -
JNTU Kakinada
Bachelor of Science - Computers
ANU