K.A.A.L OS/Viral Prajapati — Java Backend Engineer
THE ENGINEER / PROFILE
Engineering, with intention.
Viral Prajapati is an independent Java backend developer and application support engineer, available for remote collaboration across APAC, Europe, Canada, Australia, Japan and South America.
My work connects backend development with the realities of operating software: understanding API behavior, diagnosing incidents, and making the next deployment easier to support.
Technical capabilities
Implementation & Support
Application Support · Customer Onboarding · Production Support · Incident Management · Escalation Handling · Deployment Validation · Troubleshooting · Root Cause Analysis (RCA) · Smoke Testing · Kafka Troubleshooting · Documentation & Runbooks
Technologies & Tools
Java 8 · Java 11 · Java 17 · Spring Boot · Spring Data JPA · Hibernate · REST APIs · JSON · SQL · Oracle · Microsoft SQL Server (MSSQL) · MySQL · PostgreSQL · Linux · Postman · Jira · Apache Kafka · Docker · AWS Cloud Storage
Web & Integration Technologies
API Debugging · HTTP Status Codes · Browser Developer Tools · Network & Console Debugging · SSO / SAML Exposure · Webhooks · CRM / ITSM Integration Exposure · HL7 / FHIR Healthcare Integrations · RabbitMQ · ActiveMQ
Databases
PostgreSQL (Basic Knowledge) · Oracle SQL Developer · MySQL · SQL Performance Tuning · Schema Design
Selected work
Fitness Microservices API
Architected and developed a scalable backend using Java Spring Boot Microservices architecture with asynchronous messaging and event-driven communication using Apache Kafka.
Java Spring Boot · Apache Kafka · Spring Data JPA · Hibernate · AWS Cloud Storage
E-Commerce Product Management Module
Designed a modular REST API for inventory and product management using Spring Boot and Java 17 with optimized scalable API designs.
Java 17 · Spring Boot · REST APIs · SQL · AWS Cloud Storage
Enterprise Application Support & API Troubleshooting
Supported enterprise applications involving REST APIs, backend services, SQL troubleshooting, and production issue resolution with focus on API validation and deployment verification.
REST APIs · SQL · Kafka · Production Monitoring · RCA
Microservices & Backend Operations
Worked with Java Spring Boot microservices applications and REST API integrations, supporting Dockerized backend environments and service-level troubleshooting.
Java Spring Boot · Microservices · REST APIs · Docker · Service Troubleshooting
Explore the source repositories ↗
Principles behind the work
Own the outcome.
A fix is complete when the behavior is understood, the change is verified, and the next person has the context they need.
Clarity is a technical skill.
Make contracts, tradeoffs, and failure modes explicit. Good communication reduces the cost of building software together.
Let evidence change the plan.
Measure, form a hypothesis, and run a small experiment. Treat a failed assumption as useful information.
Build for the person after you.
Readable code, useful logs, and practical runbooks are part of the product. Maintainability is a form of respect.
Discuss remote engineering services ↗