Md Zakaullah

I’m a Java Developer with 1+ years of experience, focused on creating scalable applications. I build secure, efficient, and user-friendly solutions, with a strong emphasis on authentication, authorization, and reliable RESTful API design.

In my current role as a Java backend Developer at Aromix technology service, I developed secure login and registration modules using Spring, integrated third-party Security with JWT for stateless authentication, and implemented role-based access control for Admin, Evaluation Executive, CRM Team, and Customer users. I also wrote and validated business logic with JUnit and Mockito.

I’ve contributed major features across microservices—building car listing management REST APIs (add/update/filter/delete) with pagination and sorting, integrating AWS S3 for secure image/document upload, and designing booking and test drive scheduling APIs with slot availability validation and booking confirmation logic. I also built car evaluation appointment scheduling endpoints and enabled vehicle document upload with validation.

Beyond backend development, I’ve worked on DevOps and delivery practices: created Jenkins CI/CD pipelines, deployed Dockerized microservices on AWS EC2, and maintained infrastructure using Terraform. I document and test APIs using Swagger and Postman, and I use SLF4J and Logback for application logging while developing in Agile environments.