I am Muhayah Astin Latifah (often known as muyoy), a professional Data Analyst & QA Engineer based in Sidoarjo, Indonesia. I specialize in turning raw, complex data into structured, actionable insights and implementing robust automated testing pipelines to ensure software quality and reliability.
With a strong foundation in data modeling, database design, and automation scripting, I bridge the gap between analytical data processing and software quality assurance. I enjoy solving data architecture challenges, writing clean test suites, and translating business processes into reliable, data-driven systems.
Work Experience
Data Analyst & QA Engineer March 2026 - Present
PT. Piramida Teknologi Informasi
- Designed and maintained ETL data pipelines using Python (Pandas) and SQL database queries.
- Created interactive dashboards in Power BI and Tableau to track key business metrics, improving reporting speed by 40%.
- Built automated API and UI testing suites with Selenium and Playwright, reducing manual regression testing time by 50%.
- Developed and executed comprehensive test plans, identifying critical defects prior to deployment.
- Maintained CI/CD pipelines to trigger automated tests on every software release.
Junior Data Quality Specialist September 2025 - January 2026
Institut Agama Islam Hasan Jufri
- Performed exploratory data analysis (EDA) and data cleaning on administrative and student datasets.
- Designed test suites for backend APIs using Postman and Newman.
- Documented detailed test plans, bug logs, and regression test suites.
- Assisted in database migration verification and data validation audits on PostgreSQL.
Education
State Polytechnic of Jember 2024 - 2026
Bachelor of Applied Science in Information Technology | GPA: 3.91 / 4.00 (Current)
- Focus areas: Data Science, Database Management Systems, Software Testing & Quality Assurance.
Technical Skills
- Programming Languages: Python, SQL, JavaScript, HTML, CSS
- Tools & Frameworks: Pandas, NumPy, Power BI, Tableau, Selenium, Playwright, PyTest, Postman, Docker, Git / GitHub
- Databases & Systems: PostgreSQL, MySQL, SQLite, MongoDB
Publications
Evaluating Data Quality Assurance Frameworks in Automated Analytics Pipelines July 2024
International Journal of Software Engineering & Applications (IJSEA)
- Evaluated how automated data validation protocols at the ingestion stage prevent downstream reporting anomalies.
- Provided detailed metrics on error reduction rates using automated schema validation check routines.
Certifications
- Google Data Analytics Professional Certificate — Coursera (Issued 2025)
- ISTQB Certified Tester Foundation Level (CTFL) — ISTQB (Issued 2024)
Languages
- Indonesian: Native Proficiency
- English: Professional Working Proficiency