Jiaqi Wang

Experience

• 

  Siemens

  Sept 2018 - Jul 2019

  Realized the algorithm for filter design with Python.Built Filter Design Tool with Pyqt.Built website which is capable of designing passive filter to match the specified Norm with Python flask. The present website can be used to design filter for 2 level and 3 level converters. Six filter topologies are available in the website.Improved the speed of the calculation. Realized the algorithm for filter design with Python.Built Filter Design Tool with Pyqt.Built website which is capable of designing passive filter to match the specified Norm with Python flask. The present website can be used to design filter for 2 level and 3 level converters. Six filter topologies are available in the website.Improved the speed of the calculation.

  • Working Student

    Sept 2018 - Jul 2019

  • Intern / Working Student

    Sept 2018 - Jul 2019
• 

  Liangdao

  Jul 2021 - now

  Data Engineer

  Toolchain Development:1. Developed a data preprocessing pipeline in Python to process raw data from Vigem into perception results, camera and point cloud videos, and trajectory maps, enabling one-click operation that previously required 5-person effort. Assisted cloud engineers in upgrading the pipeline to a cluster-based system.2. Refactored a scenario mining pipeline to extract valuable scenarios from perception results, fixed bugs, achieving a 3x speed increase.3. Developed a KPI pipeline to evaluate the performance of perception software, contributing to a 500x increase in algorithm iteration speed.Cross-Departmental Collaboration, Team Leadership, and Process Optimization:1. Negotiated and established software interfaces in multi-departmental collaboration, providing testing support to various departments, ensuring smooth pipeline operations.2. Assessed and optimized data processing workflows regularly to enhance efficiency and performance.3. Supervised and mentored interns within the team, leading software development tasks and providing oversight, contributing to enhanced team productivity and successful project execution.Data Process and Management:1. Data Management and Quality Control: Managed and processed collected data, ensuring data quality, and assisted in selecting training and test datasets.2. DMP Backend Deployment and Maintenance: Deployed and tested backend functionalities, operated the data processing platform.3. Client Demonstrations: Prepared demo data and presented the DMP platform.Algorithm Development:1. Developed algorithms for detecting ego vehicle behaviors (U-turns, turns, S-bends, curved roads) based on GPS data, achieving over 85% accuracy, and enhancing efficiency by 1000 times compared to initial collection time.1. Backend Design: Participated in database design. Show less