Oct 2024 – Apr 2025 · 6 mos

Sep 2022 – Dec 2022 · 3 mos · Seattle, Washington, United States

• Engineered tool to provide vendors and engineers ways to investigate through resources, upgraded searching time from 10 minutes to 2 minutes.
• Integrated with Amazon Hubble, provided a centralized and web-based tool for teams with more than 20 parameterized queries managed by existing LDAP groups.
• Achieving auto-deployment within 1 hour by scaled infrastructure using AWS CloudFormation, supported automatic resources management across regions.
• Delivered web interface for vendors with no coding required, prevented any operations may damage resource or cause information leakage.
• Deployed Ruby script to build independent pipeline, established new approval workflow.

Jan 2022 – Apr 2022 · 3 mos · Toronto, Ontario, Canada

• Key language: Java8
• Key tools: RESTful API, Spring Boot, Postman
• Strengthened core feature development, implemented 15% of shared merchant invitation, accomplished private pick-up feature at the end of milestone.
• Reduced execution time of search query by 3 minutes by simplifying entity relationship and normalizing schemas.
• Maintained Restful web services and API specifications, provided easy evolution to endpoints.
• Reduced 12 second of build time by migrating the building system to Bazel.

May 2021 – Aug 2021 · 3 mos · Remote in Canada

• Key language: Golang, Shell script
• Key environment: MacOS
• Reduced deployment time by 30% by building a deployment pipeline using Python and Docker.
• Developed an over-the-air (OTA) pipeline, that allows IoT devices to upgrade firmware efficiently
• Architected and developed an end-to-end cell-connectivity monitoring pipeline for IoT devices
• Initialized and built a simulator that simulates device initialization, configuration updates, software updates in Golang.
• Monitored service health using Datadog, Cloudwatch, Rollbar.ts and Jira tickets.

Sep 2020 – Dec 2020 · 3 mos · Ottawa, Ontario, Canada

• Key language: Groovy, Python, C++
• Key environment: Linux
• Developed pipeline for automatic tests when modifying code using Groovy and Bash script.
• Utilized SVN to provide version control, supported GitHub Integration features.
• Designed new features for simplified regression tests, by monitoring changes in files using Python script.
• Built unit tests for QNX OS, focused on signal and communication between projects, satisfying security conditions of software development.

Jan 2020 – Apr 2020 · 3 mos · Waterloo, Ontario, Canada

• Key language: C++, Python, Shell script
• Key environment: ROS, Linux
• Simplified the bending logic using C++ and C# to reduce the bending error by 15%.
• Redesign the scan path algorithm to reduce the CPU time by approximately 3 minutes.
• Uploaded data of product shapes into CouchDB, specified the errors in Python using polyline library.
• Used data collected from the ultrasonic sensor, MATLAB and python to generate 3D steel die models.

May 2019 – Aug 2019 · 3 mos · Shanghai, China

• Key language: C++
• Key tool: Arduino, STM32, STM8, Altium Designer, µVision
• Designed vaporizer driving board using STM32 core and STM8 and develop PCB schematics.
• Controlled the vaporizer oscillator frequency by adjusting PWM frequency to maximize vaporization rate.
• Designed PCB to convert analog signals into digital signals to ensure vaporization efficiency.
• Calibrated the light sensor by fine-tuning op-amp gains and software parameters.