William Yiu Email & Phone Number

Herndon, Va, Us

Mclean, Virginia, United States

- Provide strategic technical leadership and oversight, guiding technical decisions and managing personnel across multiple high-value contracts.- Drive innovation by researching and implementing advanced cloud methodologies and tools, enhancing productivity, security, reliability, and performance, while delivering comprehensive documentation and support for diverse user groups.- Lead the development of technical proposals for contracts valued between $10 million and $160 million, actively engaging in technology challenges to secure new business.- Collaborate with internal stakeholders, including C-level executives, to provide technical insight and guidance for strategic partnerships and corporate-level procurement decisions.- Oversee and mentor a team of principal architects and engineers in the Mission Innovation Lab, focused on evaluating and integrating new technologies in cloud DevSecOps environments, including performance and security monitoring, deployment, and configuration.- Identify gaps in technical expertise within the organization and work closely with the CTO and EVP to secure necessary resources and talent.

Washington, District Of Columbia, United States

• Developed automated systems for software development, testing, and deployment following DevOps principles.• Managed AWS cloud infrastructure for medium to large enterprises, ensuring compliance with security standards.• Configured CI/CD pipelines with a focus on containerization, enhancing software release efficiency.

• Led a team of 120 engineers and developers in a $120 million modernization effort.• Designed and implemented an Enterprise Service Bus handling 20 million transactions for real-time data exchange.• Managed deployment pipeline using RedHat Openshift, AWS EKS, GitHub, Jenkins, and more.

Washington D.C. Metro Area

- At DHS Information Sharing Services Office, working as a Technical Lead on the Data Framework program to provide strategy, architecture, design, engineering and deployment support to implement and maintain a Hadoop-based Big Data infrastructure deployed in AWS GovCloud, DC1 and C2S to deliver near real-time data to end-users and mission operators for person-centric data search, analysis and visualization.- Lead the efforts to design, architect and implement the ingestion of mission critical data sets across various from DHS CBP ( Data sets : I-94, PNR, APIS, ESTA ) , TSA Secure Flight, IDENT, ICE SEVIS into the DHS Data Framework production system.- Currently leading a team of engineers and developers to operate and improve a Hadoop cluster that is comprised of 70+ servers and switches located remotely in the DHS Data Center located in Stennis, for the Department of Homeland Security. This cluster uses the Cloudera Distribution of Hadoop (CDH) and it utilizes many technologies in Hadoop ecosystem, such as HDFS, Map- Reduce, Spark, HBase, Hive and more. - Leveraging practices such as Scrum and Kanban. Very proficient in the implementation cycle, which in the case of Scrum includes sprint planning, application design, development and testing, deployment, sprint review, and sprint retrospectives. Expertise in agile methodologies like Scrum, Kanban, and application development lifecycle management tools like JIRA to track user story and task progress.- Established collaborative communications channels between mission users, government leadership, team members, management and key stakeholders- Conducting ongoing technical training on latest technologies and architecture patterns to promote knowledge sharing among the team- Experience leading teams in planning, creating test and production deployment/implementation plans, code versioning and security, training, production deployments as well as post production operational support for enterprise-wide applications

Washington D.C. Metro Area

- Created similar cluster in AWS from ground up. This effort included setting up the infrastructure services, such as DNS (Route 53), Security Groups, and Kerberos (used by Cloudera).- Collaborate with the team to ensure and monitor that all the technical deliverables are in adherence with the agency technical mandates and guidelines- Leading a team of systems engineers, software developers and testers providing Tier- 2 and Tier-3 O&M support to mission users in the areas of : defect fixes and enhancements to application layer, administration and engineering support for networks, system/server operations and security.- As part of this efforts, preparing all the artifacts and documents needed to address the requirements across all the phases of the DHS Systems Engineering Lifecycle- Leading the efforts to automate system configuration, management, and monitoring of components using tools like GitHub, Bamboo, JIRA, Bash, Jenkins and Ansible for rapid scalability and resiliency- Design and implement architecture and implementation solutions to address the functional and performance requirements across the application, middleware, data, infrastructure, network and security layers of the enterprise information sharing platform- Conducting design and code reviews of the technical deliverables to ensure quality and alignment with functional and performance requirements- Provided expertise in search and analytics engines, operational intelligence for use cases such as log analytics, real-time application monitoring using Elasticsearch in an AWS environment and Tableau.- Supported applications in cloud environments, performed diagnosis of issues related to the operating system, kernel, memory, and network-related issues in development, test and production cloud environments using Amazon EC2, Azure. Performed Automation and Scripting of one-time and daily tasks in Perl, and various UNIX shell such as korn, bourne

Manassas

• Member of the engineering team in designing the next generation satellite support system platform• Research and debug problems in the existing system infrastructure• Act as a technical resource for operation team in troubleshooting• Design and implemented the lab upgrades, leveraging red hat virtualization infrastructure

Herndon, Va

• Lead a small team of senior engineers, delegate assignments, and manage multiple projects. • Advise NOC management regarding technical aspects and made decisions on engineering designs. • Coordinate TWC network activities with the corporate office, cable divisions, and related departments.• Developed the disaster recovery plans for the NOC in both technical systems and the logistic. • Evaluate system parameter compliance by analyzing configuration audits.• Designated escalation point of contact for all NOC engineers and technicians.• Develop custom applications for NOC management and personnel in Ruby on Rails.• Guided engineering team to NTAC and Engineering team through continuous feedback and solution implementations.• Mentor and train junior and peer engineers by providing training sessions for Linux+ and CCNA.

Herndon, Va

• Lead a small team of senior engineers, delegate assignments, and manage multiple projects. • Advise NOC management regarding technical aspects and made decisions on engineering designs. • Coordinate TWC network activities with the corporate office, cable divisions, and related departments.• Developed the disaster recovery plans for the NOC in both technical systems and the logistic. • Evaluate system parameter compliance by analyzing configuration audits.• Designated escalation point of contact for all NOC engineers and technicians.• Develop custom applications for NOC management and personnel in Ruby on Rails.• Guided engineering team to NTAC and Engineering team through continuous feedback and solution implementations.• Mentor and train junior and peer engineers by providing training sessions for Linux+ and CCNA.

Herndon, Va - Gnoc

• Audited the Time Warner Cable commercial network using EMS (Netcool, INC, DNA, etc).• Troubleshot network issues by communicating effectively with customers and fix agents. • Developed daily plan for system operations. • Designated as point of contact/escalation point for customer to report network issues.• Analyzed ticket queue promptly on a continuous basis while supporting clients. • Collaborated with the RNOC to create change management tickets, notifying customers of the change events.• Collaborated with approval group for Cell Tower turn up acceptance.

Reston, Va – Ip Services/Managed Network Services

• Provided Tier 3 technical support for managed service clients.• Repaired layer 2/layer 3 switching and routing issues.• Designated escalation point for Tier 2.• Headed as main point of contact for clients RMA.• Analyzed ticket queue promptly on a continuous basis while supporting clients. • Designated as Team Lead to manage the NICC (Network Integration and Commissioning Center) group of the 4G WiMax team.• Supervised the daily operation of network backhaul provisioning, collaborated with Field Engineers and Vendors to integration remote end sites.• Executed daily configuration of the Cisco 6513 and 7613 to provide network access to WiMax towers.• Assessed and configured network equipment including IP aggregators (6513) and the NGWR (7613)• Instructed Cisco configuration and WiMax design to team members • Developed daily procedure to streamline operations.• Provided Tier 2 support for the NICC/NOCC.• Designated as point of contact for management team and provided integration technical assistance.• Collaborated with Samsung/Motorola to help troubleshoot connectivity issue.• Collaborated with OC-12/DS-3/DS-1/T1, troubleshoot with local LEC to address issues with the backhaul.

Lenexa, Ks - 4G Xohm Wimax, 3G Evdo

• Enhanced aggregator to provide access to the tower network entrance.• Configured aggregator daily to convert all towers from HDLC to MLPPP.• Collaborated with a small group of engineers to carry out the network-wide MLPPP migration.• Instituted a methodical process for daily migration and aided in developing the 4G WiMax provisioning process.• Implemented Cisco system IOS upgrades.

Oversee the network for day-to-day operation. Maintain Server 2003 and domain environment. Helpdesk function and service end-user machine. Configure, maintain and manage all network equipment including Cisco routers and switches.