Experience

TikTok

• United States
• Entertainment Providers
• 700 & Above Employee

• Senior Site Reliability Engineer

  • Feb 2023 - Present

  - Support global e-commerce system stability by handling the stability of thousands of microservices and related cloud infrastructures, including cloud-based RDBMS, NoSQL, MQ, GraphDB, load balancers, and container management across multiple regions. - Provide high-traffic and large-scale system stability solutions, including automated tools, alarm management, disaster recovery, and incident drills. - Participate in the global team's on-call plan and address ultra-high usage requirements for specific events, ensuring the system maintains 24x7 operation. Show less



Migo

• IT Services and IT Consulting

• Senior Software Engineer (Backend/DevOps)

  • Aug 2018 - Jan 2023

  - Lead and develop the real-time monitoring and alert system to maintain thousands of IoT devices. Define and ensure the device’s reliability goal of both hardware and software. Collaborating with the operation team to achieve the SLA is consistently met. * techniques: Splunk, Prometheus, Grafana, micro-services, Smokeping, Nginx, Kafka, Docker - Develop various automation tools to deal with regular/ad-hoc upgrade requirements for thousands of IoT devices to achieve the goal of continuous deployment (CD). * techniques: Ansible, shell script, Python - Monitor and analyze the network traffic of thousands of IoT devices to optimize the network performance. * techniques: DNS, firewall, dig, Iperf, VPN, and Wireshark - Participate in various POC projects with dozens of external vendors across software (IaaS/PaaS/SaaS) and hardware (router/cellular modem/access points) to evaluate product functionality, performance, stability, and integration capabilities. - Develop SMS message collection infrastructure to monitor thousands of IoT devices to reduce 80% of false alarms caused by unreliable 3G/4G network quality. * techniques: AWS Lambda, SQS, and Twilio SMS gateway/API - Develop the ETL processes to transform unstructured operation data into structural metrics for the requirements of data analysts and scientists. * techniques: SQL, Python, shell script, data wrangling, OLAP - Cloud engineering experiences (AWS). * techniques: EC2, RDS, S3, Route53, Pinpoint, SQS, ELB, Lambda - Work as a product owner and scrum master based on the agile methodology. Long-term collaboration experience across multiple stakeholders such as operations, manufacturing, data scientists, and external vendors. Show less



MediaTek

• United Kingdom
• Printing Services

• Senior IC Design & DevOps Engineer

  • May 2015 - Apr 2017

  - Build the large-scale system CI flow (>10 subsystems) to provide several test coverage metrics (unit/integration/stress), proactive error detection features, and key performance reports. * techniques: shell script, Python, Perl, Verilog, testing methodologies- Data analysis for system quality improvement (performance/cost/power consumption). Extract useful structured features from large amounts/multiple dimensions of unstructured data such as working frequency, bandwidth, and power consumption based on the data wrangling techniques. * techniques: Python, shell script, Perl- Take over the system-level integration projects 4 times based on the waterfall methodology. - Multi-processing function design in video codec based on the concurrent computing and resource-sharing structure. Related product: HEVC/VP9 multi-core 4K/60fps video decoder. * techniques: multi-process programming, DRAM controller/cache design Show less

• IC Design Engineer

  • Nov 2011 - May 2015

  - Video codec software/hardware development. Familiar with various video codecs' techniques and specifications, including HEVC(H.265), AVC(H.264), VP9, VP8, AVS1/2, and RM. * techniques: C/C++, Verilog- Participate in video codec verification/driver design across various products (SmartPhone/Tablet/TV) and different production stages (MP/EVT/DVT). * techniques: C- Experienced in ASIC simulation/synthesis/flooplaning/P&R/Testing and respective EDA tools such as VCS, Verdi, DC, PrimePower, LEC, Encounter, and TetraMAX. Show less