OTA (over the air) upgrade firmware experience Familiar with Debug tools : Oscilloscope, Logic Analyzer, Spectrum Analyzer, GDB. Good teamwork and foreign engineer co-work experience. Familiar with product testing and safety certification experience. 工作經歷 Senior Software Engineering Browan Communications, Inc. • MarPresent Responsibility Develop LoRaWAN IoT sensor device project, OBM/ODM/OEM production test and safety certification. 1. Completed about 10 product cases of the company 2. Good business logic and participate in product specifications proposals 3. Developing the LoRaWAN protocol. 4. Provide program development sample
Senior Backend Engineer/Machine Learning Engineer @Calyx Inc.
・
2022 ~ Present
後端工程師/系統架構師/機器學習工程師
Within one month
Set up monitoring and logging with Prometheus, Grafana, and Loki. Integrated end-to-end testing using Cypress.js and enhanced CI/CD with ArgoCD and GitHub Actions. Refactored the SaaS platform for better scalability and added role-based access control (RBAC) with OPA. Upgraded the LoRaWAN network for increased throughput using AWS IoT Core and Apache Kafka. Developed a chicken identification model using Mask R-CNN and vision transformers, with a high accurate weight estimation using XGBoost. Built a real-time data pipeline for chicken weight prediction on farms. Deployed lightweight object
Yii Chen Senior Flutter Developer | iOS, Android 7 years in Mobile. 5 years of Flutter. Organizer of Flutter Taipei and Flutter Formosa. Also Writer and Speaker. Stay focused on Flutter and be an influencer. Keep positive to impact whom I work with. Taipei, Taiwan 技能 Java Kotlin Android Swift iOS Dart Flutter MySQL Linux 工作經歷 Mobile Lead HerFIT • March SeptemberPresent Run HerFIT, which is a female fitness app. Keep offering products with a high-performance experience by using Flutter. Skill: Flutter · Dart Senior Flutter Engineer 維諾森
Erlang and PHP, running complex business logic for tens of thousands of users in realtime. Maintained zero auction logic bugs from launch through three years of production. Built a chat server for a social networking startup in Erlang. Supported multiple client protocols and highly dynamic group chats. Implemented in-house tools including web frameworks, database schema management libraries, and OpenID servers JanuaryDecember 2012 Consultant • Freelance Siemens Wattsense: Optimization and feature development for a LoRaWAN server for low-power IoT sensors. Fixed various in-field performance problems and added new algorithms for power...
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