Da Y. Email & Phone Number

Santa Clara, Ca, Us

Santa Clara, Ca, Us

Palo Alto, Ca, Us

- Architected and implemented a sophisticated cloud-native Role-Based Access Control (RBAC) and Attributes-based-access-contol (ABAC) solution. Utilized Istio service mesh intercepting internal Kubernetes requests and validating permissions against Keycloak. - Implemented robust token-based authentication with Keycloak on the Gin web framework in Golang, bolstering system security and safeguarding sensitive data.- Developed the entire backend RESTful API for a customized Kubernetes operator facilitating onboarding and offboarding between PODs and applications. Leveraged the Gin web framework in Golang and employed a graph database (ArangoDB) for efficient data management.

Palo Alto, Ca, Us

- Orchestrated the analysis of Cassandra keyspace/table usage and integrated it with Grafana panels by capturing HTTP requests from existing Golang implementations.- Translated existing Django code into Golang to optimize performance, including the distribution of HTTP requests.- Implemented an IoT security and surveillance solution for Dell, including collecting cameras streaming data, saving streaming data into object storage cluster (ECS) and monitoring real-time storage. - Translated and Golang SDK from python SDK for EMC Isilon storage cluster and open-sourced library.

Palo Alto, Ca, Us

- Designed and implemented voice user interface (VUI), the feature could translate device’s locations into human language on any device by utilizing Google Assistant; also dockerized Node.js backend services into Kubernetes with microservice architecture, and Kubernetes managed by VDP in AWS- Implemented a web application for voice interface in Angular, which the application shows the device’s real-time location; also upgraded legacy Angular project from 1.5 to latest version- Implemented continuous integration pipelines on GitLab for different staging; also setup Kubernetes CRON jobs for refreshing AWS certificates on GitLab

Cupertino, California, Us

● Architected and implemented an advanced search engine platform for internal teams by using Django with MySQL and Redis from scratch individually, which could support queries on text and voice data across different internal Siri systems, micro-serviced and templated the platform, also adapted the service to different teams● Designed and implemented a token parsing suggestion system, which provides engineers the most appropriate parsing suggestions based on multiple criterias (length, weights, and frequency) for any sentence and phrases● Integrated token parsing system into Siri’s speech patching process; added extra features, includingadding/modifying/deleting tokens and pronunciations● Fine-tuned a specific Nature Language Processing (NLP) classifier for Siri suggestion system which is supporting eight languages and sixteen locales, increased prediction accuracy from 85% to 98%● Designed and implemented a dynamic Regular Expression (RegEx) data/time formatter in native JavaScript which could adjust format for different locale automatically● Designed and implemented web browser extensions on Google Chrome and Safari for automation jobs

● Suggested to administration and built an internal Wiki for knowledge management; designed and implemented an internal communication system by using Node.js and MongoDB● Designed and implemented a production code management system: based on GitHub, Jenkins as CI, JIRA as bug tracking system; micro-serviced and containerized all parts in Docker with Kubernetes

Menomonie, Wi, Us

● Designed a dynamic network traffic load balancing solution for multiple data centers by using Python on OpenDayLight● Designed and implemented GRE Tunnel by using vSwitch on OpenDayLight● Analyzed and manipulated OpenFlow packets on SDN platform● Assisted program director in developing courses for undergraduate student to get familiar with Azure by setting up SharePoint on Azure● Designed and implemented an application, which could automatically create Virtual Machine on demand from template via VMware ESXi by using PowerShell

● Applied black box penetration tests in production environment, found a few vulnerable entrance like SQL injection (' or 1 = 1'), XSS, and bypass security check when uploading images (modified JPEG header)● Designed a log analyzer in Python, which could filter logs by services category, timeline and keywords● Designed database structures for new project, and optimized low performance SQL statements which reduced the execution time from more than two minutes to 30 seconds in MSSQL

Master’S Degree, Information Communication Technology

Bachelor’S Degree, Itm