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data. ETL data and construct data pipelines for retraining models/in production. Working in RPA( Robotic Process Automation) team, Web Scraping(crawler) and automating routine tasks to achieve labor cost reduction. JuneMay 2020 Data Scientist Intern @ Cathay Financial Holdings. 國泰金控 Digital data & Technology (DDT, 數數發) Research into Interpretable Machine Learning and its existing algorithms. Experimented LIME & SHAP on open data. ( GitHub ) Real Estate Evaluation model – Geographical/Credit Card data gathering, cleaning, feature engineering (Hit-rate performance improved from 55% to 70%) Python Machine learning Data Pipelines

infrastructure as code 經驗: ‧ 使用 Terragrunt 和 Hashicorp 發布的 GitHub projects 管理 GCP infrastructure。 ‧若 Hashicorp 沒有相關的 resources 時，則參考 Terraform Google Cloud provider 文件，自行刻撰 module 並在 Terragrunt 中使用 。 5. Data Engineer 經驗: ‧架設 ClickHouse cluster multi-shards ，處理 1B+ 量級資料。 ‧dbt 開發 ， 遵循 best practice 建立 ELT pipeline ，將 data mart 提供給 BI 工具串接，改善 BI 報表查詢體驗。 Data

Viky Aji Siswantoro Gresik, East Java, [email protected] Viky Aji Siswantoro As a skilled data engineer with expertise in Python programming, data engineering, data analysis, machine learning, and data visualization with Tableau, I offer a comprehensive set of skills to tackle complex data challenges . With a background in data engineering, I have the ability to design, build, and maintain data pipelines, ensuring efficient and accurate data processing. I am proficient in using Python to implement scalable and reliable solutions, leveraging frameworks and libraries such as Pandas and NumPy. In addition to my data engineering

report across devices and channels that result in the conversion rate of new users increased by 20%. • Design and build various payment methods, label-based search, dynamic pricing via different sale channels, and user-preference recommendation engine to optimise user experience and to boost CVR. • Supervised the AsiaYo Data team, establishing a data pipeline by Airflow™, and building a report system on Tableau™, to accelerate decision-making process across BUs. • Initiated behaviour tracking on the supply-side behaviour of hotels, homestay owners and large-scale operators, analysed their inventory and price synchronisation rate, and proactively

Achieved a 78% reduction in data storage requirements and significantly accelerated query speeds from hours to minutes through the seamless integration of lakehouse and data platforms. • Consult for business process automation using data techniques on loan, credit analysis and procurement process. • Design solutions for data leakage prevention and data security. • Implement end-to-end generative AI solution integrating with GraphDB, Chatbot & Avatar. Morrison Express Corp., Data Engineer, Jan 2021 ~ Jul 2022 • Orchestrated data pipeline, ETL process and API to connect diverse data systems and facilitate data migration. • Full accountability for overseeing data architecture and

resources are in Github code management. Building the hiring process, start the engineer-level policy draft delivered by our CTO, interview assessment, and interview questions. Backend developer, Dcard, Jun– FebThe biggest social media app in Taiwan. ( App store ) This position works closely with the infrastructure team members, data scientists, and product managers. Dcard is the most popular social media app in Taiwan. Support data-team built data pipeline and data center for our home page recommendation system. Implemented dictionary compression utility for a high writing-load database with a 95% compression rate and 60

析 EDA tool 使用狀況， 降低 25% 採購成本 Data Engineer, 建立結構化資料和非結構化資料之 automating data pipelines 設計 PB-level 資料 ETL 流程並 引入 阿里巴巴 data warehouse 分層設計 建立資料品質 realtime 監控機制，資料缺 失率 50% 降低到 <1% Taipei City, Taiwan 工作經歷 Data Engineer / Scientist MediaTek Inc. • 2019/07 - Present 協助晶片設