Experience

Full Stack Developer

Acted as Full Stack Developer and System Administrator for HRIS (Human Resource Information System) at PT. Petrokimia Gresik, managing cloud infrastructure and GitOps.
Contributed to various modules such as online attendance for employees using a mobile application (Flutter), Employee Reimbursement System, and E-Administration for employees.
Contributed to development of digital transformation initiatives, including a secure document archive system and employee approval administration workflows.
Collaborated closely with teams in sprint-based iterations, involving planning, code review, testing, debugging, and deployment through CI/CD pipelines.
Conducted system performance optimization, focusing on improving query performance, caching, and database indexing for better scalability and user experience.

Developed the MinerbaOne platform using a microservices architecture, ensuring enhanced scalability and maintainability. Led the design, development, and maintenance of the platform’s backend services, which serve over 71K active users regularly.
Developed various backend services using Laravel RESTful API, implementing JWT for authentication and authorization to secure user access and data.
Focused on optimizing SQL queries and system performance, ensuring fast and efficient processing of large-scale data. Debugged and fixed bugs to ensure consistent system reliability and user satisfaction.
Utilized the sprint method for development iterations, conducting planning sessions, daily stand-ups, reviews, and retrospectives to foster collaboration, improve productivity, and meet project deadlines.
Ensured the platform’s backend was optimized for scalability, able to handle increasing user traffic while maintaining high performance. Focused on building a robust backend capable of adapting to future growth.

Responsible for designing, developing, and maintaining a web application used by more than 100+ active users on a regular basis.
Integrating external APIs and third-party services to enhance the application's functionality and support the growth of active users. (DB Transaction, Task Scheduling)
Responsible for brainstorming, developing, testing, collaborating, code reviewing, debugging, and deploying. (GitHub, CI/CD, Unit Test, Server Monitoring, Logging)
Optimized SQL Query for the heavy-load parts of the system, which improved website performance by 40% (Optimize Query, Indexing, Caching, Queue)
Conducting regular monitoring and maintenance, as well as responding to user feedback to address weaknesses and improve features.

I learn about Deep Learning, Data Science, Natural Language Processing, Computer Vision, Reinforcement Learning, and Version Control System.
Learn softskills such as professional branding, problem-solving, critical thinking, time management and teammate.
I learn how to use Python, TensorFlow, Keras, PyTorch, Scikit-Learn, OpenCV, and other libraries to build Machine Learning models.
Deploy Machine Learning models to the cloud and create a web app.

Collaborated with back-end teams to brainstorm, design, and develop a service product to help people get hired.
Ensuring the applications perform optimally and provide a satisfying user experience.
Responsible for designing, developing, and testing Android and iOS-based mobile applications using Flutter.
Integrating various services and external APIs into the mobile application to expand functionality.
Implemented mobile development best practices and patterns and presented them to other engineers.