Software Engineer - Java

Summary

I am a passionate Software Engineer with over 2 years of experience designing and developing scalable backend systems using Java, Spring Boot, and microservices. My expertise lies in building secure APIs, optimizing database performance with JPA/MyBatis, and delivering reliable solutions that support real-world business operations.

I have contributed to large-scale projects such as the CTN Merchant Portal in Japan, where I developed APIs enabling 1,000+ merchant registrations, and the Osaka Gas digital transformation initiative, where I improved backend reliability for critical customer operations. Alongside industry work, I have built successful independent products, including SunLicense, a license management system generating $1,000+ revenue and serving 50+ customers, and Sunguard, a lightweight code obfuscator adopted by 30+ clients. My open-source work, including SlackL, a Slack translation bot, reflects my drive to create tools that solve real-world problems.

I am an Oracle Certified Associate Java SE 8 Programmer. Recognized on the Deans List, I bring both strong fundamentals and a proven track record of delivery.

Expectations

I am looking for a new role because I want to take on bigger challenges and work on impactful projects where I can apply my expertise in Java, Spring Boot, and microservices. In my current and past roles, I have gained solid experience building scalable APIs, optimizing performance, and even developing my own successful products like SunLicense and Sunguard. Now I am looking for an environment that offers more complex technical problems, collaboration with experienced engineers, and opportunities to contribute to large-scale systems.

Employment Preferences

Expected Base Salary

**,000 USD

Expected Hourly Rate

* USD/hr

Academic Degree

Experience

Skills

• Java
• Core Java
• Java SE 8
• Spring Boot
• Spring Ecosystem
• Microservices
• REST APIs
• API Development
• JPA
• Hibernate
• MyBatis
• SQL
• Databases
• Database Optimization
• Object-Oriented Programming
• OOP
• Exception Handling
• Java Streams
• Lambda Expressions
• Collections API
• Software Architecture
• Secure Coding
• Code Obfuscation
• Unit Testing
• Automated Testing
• Testable Code
• Debugging
• Problem Solving
• Git
• Version Control
• Agile Methodologies
• Scrum
• Software Project Management
• Web Development
• Operating Systems
• Networking
• Docker
• For Deployments
• Plugin Development
• Minecraft Plugin Development
• API Integration
• License Management Systems
• Security Solutions
• Runtime Checks
• Open Source Development
• Slack Bot Development
• Multilingual Communication Tools
• Entrepreneurship
• Product Development
• Business-Oriented Software Solutions
• Cloud Deployment
• Hybrid
• Remote Projects
• Team Collaboration
• Communication Skills
• Continuous Learning
• Free
• Open Source Software
• FOSS
• Contributions