- Data lake development: - Created pipelines to ingest data from flat files and RDBMS, and use Spark to validate, clean, and transform the data - Designed positive and negative cases in the pipelines for User Acceptance Testing - Implemented a workflow to retry the ingestion of failed pipelines with a success rate of ~100% - Tools: Hadoop, NiFi, Hive, Spark, PostgreSQL- ESG sustainability software development: - Created event-driven ETL workflow using AWS Glue to ingest incoming files, calculate ESG KPIs (~40 indicators), and send the results to OpenSearch - Developed a Python agent (containerized in Docker) to monitor local and SharePoint directory to send data to Amazon S3- Developed credit scoring and collection dashboard using Apache Superset- Built rule-based + supervised ML model for fraud detection

• Conducted and organized tutorial sessions for one semester.• Graded homework and quizzes.Courses:1. Mathematical Methods in Astronomy II (2019)2. Mathematical Methods in Astronomy I (2019)3. Processes in Astrophysics I (2019)4. Introduction to Cosmology (2020)5. Physics of Waves (2020)6. Astrophysics II (2020)

- Maintained the telescopes and other instruments owned by TPKA Indonesia.- Conducted research on observational astronomy using the instruments owned by TPKA Indonesia.Notable events:1. Jury's assistant at the observational round in National Science Competition (KSN) of Astronomy 2019 in Manado, North Sulawesi, Indonesia.2. Jury's assistant at the observational round in National Science Competition (KSN) of Astronomy 2020 - online.

• Worked on the topic of optical spectroscopy of emission-line objects. PI: Dr. Hakim L Malasan.• Operated GAO-ITB RTS and 'LHIRES Telescope' at Bosscha Observatory to conduct the observations.• Wrote and published a paper reporting the observations. (available online, see 'Publication')