Software Developer
Hi, I'm Joshua SunjayaJoshua Sunjaya.
I build reliable web and mobile applications using modern technologies, with a focus on .NET, Flutter, APIs, and SQL Server.
Core Stack
About Me
From business needs to
reliable solutions.
I'm a Software Developer with over 6 years of experience building and maintaining web and mobile applications for business needs.
My experience covers full-stack web development, mobile application development, REST API integration, database development, troubleshooting, and application maintenance.
I enjoy working with existing systems, understanding business requirements, solving technical problems, and turning them into reliable solutions.
6+
Years Experience
3+
Major Projects
Skills
Technologies I work with.
A combination of development, database, and problem-solving skills built through years of working with real-world business applications.
Backend & Web
Building business applications and APIs.
Mobile Development
Creating cross-platform mobile applications.
Database
Designing and working with application data.
Frontend & Tools
Building responsive and maintainable interfaces.
Experience
My professional journey.
Over six years of experience building, maintaining, and improving business applications across web and mobile platforms.
2025 — Present
Staff IT Developer
PT Asuransi Jiwa Central Asia Raya
Develop and maintain internal web and mobile applications based on business requirements. Work across application development, API integration, database development, troubleshooting, and user support.
Mar 2021 — Feb 2025
IT Staff & Developer
PT Asuransi Reliance Indonesia
Developed and maintained internal web applications and supported business systems. Worked on application development, database-related tasks, maintenance, troubleshooting, and issue resolution.
Mar 2020 — Mar 2021
Junior Web Developer
PT Jayadata Hutama Prakarsa
Developed and maintained web applications using Angular, including a sales platform for a healthcare-focused company.
What I Do
Building solutions that work.
From web applications to mobile apps, I help turn business requirements into reliable digital solutions.
Web Development
Build responsive and scalable web applications using .NET Core, Angular, and SQL Server.
Mobile Development
Create cross-platform mobile applications using Flutter with RESTful API integration.
Bug Fixing & Maintenance
Identify and resolve application issues, improve existing systems, and keep applications running reliably.
API & Database
Develop RESTful APIs, Stored Procedures, and SQL queries to support efficient data processing.
Projects
Things I've built.
A selection of applications and systems I've worked on throughout my experience as a Software Developer.
Balanced Scorecard System
Internal web application for managing KPI, scorecards, weighting, approval workflows, and performance evaluation.
HRIS Mobile Application
Mobile application for employee self-service, attendance, submissions, approval history, and other HR-related processes.
Insurance Application System
Web-based application supporting internal business processes, data management, and operational workflows.
Contact
Let's build something together.
Have a project in mind, need help fixing an existing application, or just want to discuss an idea? Feel free to reach out.
Start a conversation
Have a project in mind?
Let's discuss how I can help bring it to life.