Qianni Wang

Experience

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  Fillmula Inc

  May 2021 - Jul 2021

  Back End Developer Intern

  ● Focused on backend development tasks for a document management system, improving system security and user authentication via SMS through AWS● Conducted web service testing by validating code modifications and identifying and documenting faults, fixing 8 bug within my first week alone

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  GF SECURITY SERVICES LTD

  Jul 2021 - Sept 2021

  Data Analyst Intern

  ● Collaborated on a team initiative to create a course recommendation engine, boosting employee training● Managed data collection and processing from the corporate database using SQL, Numpy, and Pandas, ensuring high data quality and usability● Utilized the Collaborative Filtering algorithm and a neural network to enhance suggestion accuracy, improving the overall user satisfaction score from 2.8 to 4.2 out of 5● Formulated a Keras-based neural network to refine search engine accuracy with dynamic labeling, improving the CTR by 28%● Leveraged the TF-IDF algorithm and a Ridge Classifier for precise topic prediction and implemented content-based filtering to effectively tackle the cold-start problem Show less

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  Arctic Wolf

  Sept 2022 - Aug 2023

  ● Spearheaded the migration of the Snort Rule Classification Project to AWS SageMaker, enhancing AI capabilities● Architected and executed comprehensive training and inference pipelines on SageMaker, optimizing performance by encapsulating procedures and streamlining the code● Integrated SageMaker pipeline with the CI/CD pipeline using GitHub Actions and Harness● Implemented a general parser over specialized parsers to parse Snort Rules from different vendors, and added it as a step to the pipeline increasing parsing speed by 25%● Extended the ransomware classifier to classify rules from different vendors and improved the accuracy of the model from 86% to 93% Show less ● Engineered and sustained advanced internal build and testing tools within the infrastructure team● Employed AWS SDK and Cobra to enhance an internal command-line tool to automate service updates bychecking version numbers stored in AWS S3, increasing developers’ update frequency by 300%● Designed a comprehensive notification system using AWS that monitors artifact replication services, identifying and reporting anomalies directly to Slack● Optimized the CI/CD pipeline with the addition of Bazel and automated build log uploads to AWS S3 using Jenkins, reducing build and test times by 20% Show less

  • Developer Co-op

    Apr 2023 - Aug 2023

  • Developer Co-op

    Sept 2022 - Mar 2023