• Identified and reported bugs through manual and automated testing on Reqres, ZeroBank, and Saucedemo, improving web stability by 30% using Cypress.• Implemented automated testing for Pendaki, Samsung, Calculator, and Shopping apps, accelerating test cycles by 30% with Katalon Studio and Android Studio.• Validated API performance testing for response status and API reliability on Reqres and Pokeapi using Postman.• Managed SQL and database testing to ensure data integrity and resolved issues in 15% of queries using DBeaver and MySQL.• Evaluated load and performance on Reqres and Eduwork sites to optimize performance, reducing response time by 20% with Apache JMeter.• Conducted manual and automated testing on rsmurniteguh and sistemtoko, enhancing application quality by fixing 40% of identified bugs using Cypress.

• Performed routine preventive maintenance on ATMs to ensure smooth operations, reducing machine downtime by 20% using diagnostic tools.• Analyzed technical issues and executed repairs as needed, increasing repair speed by 50% with diagnostic devices and repair tools.• Replaced damaged parts or components to restore machine functionality, resolving 95% of reported issues using tested spare parts and appropriate tools.• Inspected and tested security systems to maintain ATM security with a 100% success rate, utilizing security testing tools and software.• Prepared comprehensive maintenance, repair, and service reports for documentation and analysis, facilitating follow-ups and audits with 100% accuracy using a reporting management system.• Met monthly maintenance targets to ensure client satisfaction and stable operations, addressing 100% of ATM issues.• Collaborated with clients, including security and IT departments, to ensure ATM reliability and security, strengthening work relationships and ensuring prompt response to security issues.