Mark Yang Email & Phone Number

Singapore

Shanghai, China

- Lead iHerb Site Reliability Engineering group in Shanghai.- Conceptualize and execute a strategy for CD platform migration, utilizing Terraform.- Transition DevOps services from GKE to EKS, employing ArgoCD.- Decompose substantial tasks into manageable story units and delegate these to team members, and take issue escalations.- Conduct technical sessions and disseminate best practices within teams.

Shanghai, China

- Lead, design and implement the next generation iHerb DevOps Portal, to enhance the developer experience by offering a consolidated web interface for the observation and manipulation of applications, artifacts, redis, and so forth.- Integrate ArgoCD into our infrastructure as a part of GitOps.- Provision aws resources and clusters by utilizing Terraform and Terragrunt.- Collaborate intensely with teams based in Irvine.

Shanghai, China

- Take over the iHerb Platform Library - Reconfigure source repositories, enhance module dependencies, synchronize versioning strategy and lifecycle, elucidate gitflow and practices of releasing. - Incorporate support for netcore 3.1. - Design and implement Configuration and Tracing module. - Write a series of tech documents.- Redis - Gather and dissect data reflecting Redis usage at iHerb. - Develop our unique Redis helm chart, accommodating different deployment modes: standalone, master-only, slave-only, and high availability with sentinel support. - Architect a shared Jenkins library as a helm-based CD pipeline, which facilitated the deployment of more than 1,000 Redis instances. - Establish Grafana dashboards specifically for Redis, aimed at routine monitoring and troubleshooting. - Design and implement a Redis caching hierarchy for the benefit of development teams. - Identify, troubleshoot, and rectify production issues related to Redis.- RabbitMQ - Erect monitoring dashboards tailored for RabbitMQ. - Diagnose and mitigate issues concerning RabbitMQ.

Shanghai, China

- Preside over and enhance the Catalog Portal, an entity that manages the products and categories pertaining to iHerb.- Incorporate structured application logging utilizing Serilog to substantively elevate the experience of log aggregation.- Facilitate the exportation of application and business level metrics, consequenting in the creation of monitoring dashboards and alerts.- Utilize RabbitMQ in order to decouple and facilitate better integration with external systems.- Collaborate with team members, architecting and instituting the audit sub-system.- Automate UI tests with the utilization of the behave/Python framework.- Provide mentorship for onboarding engineers.

Shanghai, China

Focus on K12 education, lego & programming for kids.

Shanghai

- Build and lead the platform team, driving collaboration and productivity.- Designed and lead a private cloud PaaS, TGOP, which included API Management, Middleware Services, and Application Performance Management; served over 300 engineers and supported more than 200 business projects within the company.- Spearheaded the development of an Application Performance Management (APM) system, consisting of monitoring, logging, and tracing subsystems. This system covered over 200 metrics of 1,500+ service instances on 700+ servers, drastically reducing incident response time and enabling issues to be narrowed down to code level within minutes through visualized and aggregated metric/log/tracing records.- Implemented CI/CD automation pipeline triggered by Jenkins and utilizing Docker for containerization.- Developed a simple distributed file system, code-named Coral, utilizing Varnish, FastDFS, and Java/Spring.- Provided solutions and best practices for complex production issues, including a significant reduction of CPU usage from 90% to 10% for a core business API service.- Served as a lecturer at APMCon and GIAC, sharing expertise and insights with industry peers.

Shanghai

- Assisted APAC customers in resolving complex issues related to .NET/ASP.NET/IIS/IE/Win32 applications, including crashes, hangs, leaks, and performance tuning.- Performed in-depth troubleshooting using advanced debugging tools such as WinDbg and PerfView/Xperf, providing customers with detailed analysis reports.- Delivered consultations and training to premier customers both remotely and on-site, advising on solution design, best practices, and emerging technologies.- Took on escalated cases from team members due to technical complexity and mission-critical status.- Played a key role in hiring and mentoring new hires, facilitating readiness and case collaboration.- Served hundreds of customers, successfully managing and resolving over 2,000 real production incidents.

Shanghai, China

- Acted as a moderator for CLR, BCL, VS Debugger, and .NET Diagnostic Tools forums, fostering an engaging and informative online community.- Lead vendor team, coordinating daily tasks and fostering a productive working relationship with Microsoft full-time employees.- Contributed to the Microsoft All-In-One Code Framework by generating ideas and writing code samples, enhancing the resource's value and usability.- Contributed over 1,000 replies and articles to community forums, recognized by community members as helpful and informative.

Shanghai, China

Developed and maintained a WinForms-based application as an integral part of a large-scale public security project, ensuring its reliability and effectiveness.