junaid fiaz
Islamabad, Pakistan
junaid fiaz
Java Spring Boot Developer
Category : Web development
I am a Java Backend Developer with 4+ years of experience designing and building scalable, REST
APIs using Spring Boot, Spring Security. Proven expertise in multi-tenant SaaS architecture, third-party
API integrations, database optimization, and end-to-end application development across diverse
domains (automotive workshops, fleet operations, services marketplace, vehicle management). Skilled
in JWT authentication, JPA/Hibernate, Liquibase migrations, and API design. Passionate about clean
code, performance optimization, and delivering high-quality solutions that drive measurable business
impact.
APIs using Spring Boot, Spring Security. Proven expertise in multi-tenant SaaS architecture, third-party
API integrations, database optimization, and end-to-end application development across diverse
domains (automotive workshops, fleet operations, services marketplace, vehicle management). Skilled
in JWT authentication, JPA/Hibernate, Liquibase migrations, and API design. Passionate about clean
code, performance optimization, and delivering high-quality solutions that drive measurable business
impact.
![I will develop scalable Java Spring Boot REST APIs with mysql database schema]()
REST API development, database design & optimization (MySQL), JWT authentication & Spring Security, third-party API integrations, Liquibase migrations, clean production-ready code, bug fixing & code ...
• Backend Development & Optimization: Debugged and refactored Java code across high-traffic production environments, improving application performance and reliability while reducing memory consumption.
• Third-Party API Integration: Integrated Java applications with multiple external systems (Google Maps/Address API, route optimization, VIN decoder, WhatsApp, Firebase Notifications, Linode Storage, and Google Cloud Storage), extending platform functionality seamlessly.
• Performance Tuning: Applied advanced optimization techniques to critical code paths, achieving measurable improvements in response times and reducing API latency.
• Third-Party API Integration: Integrated Java applications with multiple external systems (Google Maps/Address API, route optimization, VIN decoder, WhatsApp, Firebase Notifications, Linode Storage, and Google Cloud Storage), extending platform functionality seamlessly.
• Performance Tuning: Applied advanced optimization techniques to critical code paths, achieving measurable improvements in response times and reducing API latency.
• SaaS API Development: Designed and implemented RESTful API endpoints for enterprise SaaS applications, handling complex business logic and ensuring high availability.
• Database Optimization: Leveraged JPA/Hibernate to optimize MySQL database interactions, improving query performance by through strategic indexing and lazy-loading patterns.
• Real-time Notifications System: Implemented SMS integration, Firebase Cloud Messaging (FCM), and WebSocket technologies for real-time notifications and data synchronization.
• Database Optimization: Leveraged JPA/Hibernate to optimize MySQL database interactions, improving query performance by through strategic indexing and lazy-loading patterns.
• Real-time Notifications System: Implemented SMS integration, Firebase Cloud Messaging (FCM), and WebSocket technologies for real-time notifications and data synchronization.
• Backend Development: Built dynamic web applications and RESTful services using core Java, Spring Boot, and various web frameworks from the ground up.
• API Endpoint Design: Designed and implemented API endpoints using Spring Boot, managing HTTP request handling and generating accurate API responses.
• Database Design & Management: Worked with MySQL and PostgreSQL, designing normalized schemas and writing optimized SQL queries for efficient data retrieval.
• API Endpoint Design: Designed and implemented API endpoints using Spring Boot, managing HTTP request handling and generating accurate API responses.
• Database Design & Management: Worked with MySQL and PostgreSQL, designing normalized schemas and writing optimized SQL queries for efficient data retrieval.
- 🇬🇧 English
- 🇵🇰 Urdu
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