Tony Chou
San Jose
Summary
Responsive expert experienced in monitoring database performance, troubleshooting issues and optimizing database environment. Possesses strong analytical skills, excellent problem-solving abilities, and deep understanding of database technologies and systems. Equally confident working independently and collaboratively as needed and utilizing excellent communication skills.
Overview
23
23
years of professional experience
Work History
Sr. Database Engineer
Openwave Messaging (Lumine Group)
09.2023 - 10.2024
- Led the migration of Cassandra databases from AWS to Oracle Cloud (OCI) for large-scale customers.
- Upgraded Cassandra versions 2.x and 3.x to the latest 4.x, enhancing performance and stability.
- Developed Ansible scripts for efficient deployment of new clusters and provide more efficient use of time.
- Gathered, defined and refined requirements, led project design and oversaw implementation.
- Reviewed project requests describing database user needs to estimate time and cost required to accomplish projects.
- Collaborated with system architects, design analysts and others to understand business and industry requirements.
- Developed and delivered business information solutions.
- Planned and installed upgrades of database management system software to enhance database performance.
- Applied effective time management techniques to meet tight deadlines.
- Proven ability to learn quickly and adapt to new situations.
Database Engineer IV
Synchronoss (Openwave Messaging)
10.2017 - 09.2023
- Completed paperwork, recognizing discrepancies and promptly addressing for resolution.
- Managed multiple Apache Cassandra clusters with versions from 1.x all the way up to 3.11.x in various customer environments.
- Supported large scale clusters ranging from 3 node clusters to multi-DC environments with over 300 nodes and nodes supporting up to 2 TB of data each.
- Created scripts or utilize Ansible to help manage, monitor and perform maintenance work for large clusters.
- Helped to design, build, deploy and migrate clusters into new datacenters.
- Performed upgrades of various Cassandra deployments and versions.
- Troubleshooted performance and Cassandra related maintenance jobs like compaction issues.
- Deployed Reaper for multi-DC Cassandra deployments.
- Was the Point of contact for vendor escalations and support.
- Maintained access to various customer environments and adhering to all their security requirements.
- Provided best practice and standards for database implementation and operations.
Sr. Database Administrator
Visa
01.2009 - 09.2017
- Managed multiple database platforms; ORACLE, Cassandra, Sybase and MySQL.
- Created shell scripts to automate reports, monitoring jobs and support distributed systems (Cassandra) to help cut down on time from weeks to days.
- Wrote shell scripts to help perform rolling restarts of Cassandra clusters.
- Supported high volume OLTP databases and large scale post transactional databases.
- Installed and maintained Cassandra OpsCenter.
- Learned basic knowledge of Cassandra SOLR queries.
- Worked with various teams to troubleshoot performance issues.
- Wrote SQL code to collect data for various groups.
- Deployed DMLs, DDLs and Store Procedures to databases for application code pushes.
- Managed Oracle Golden Gate Replication across various critical platforms.
- Performed database switches between datacenters.
- Managed database integrity when issues arises.
- Installed Oracle and Cassandra database instances for production.
- Provided 24/7 support and oncall rotation.
- Managed data purges for data retention policies.
Sr. Production Operations System Administrator
Cybersource (Visa)
04.2007 - 01.2009
- Developed and implemented various monitoring tools to help prevent downtime.
- Installed important security and functionality patches to maintain optimal protections against intrusion and system reliability.
- Worked with users to determine areas of technology in need of improved usability.
- Helped to develop and write internal applications to manage servers on F5 BigIP.
- Deployed and monitor code releases into a Linux based production environment.
- Managed onboarding and offboarding of employees.
- Created automation tools and updated existing tools to help make them more usable.
- Troubleshoot various network and code issues to reduce downtime impact to customers.
- Communicated with our 3rd party partners and different responsible groups within the company to solve production problems.
- Performed system administration of local systems.
- Control the flow of network traffic to production servers.
- Monitored and maintained the health of all production servers.
Trident Systems Engineer
Northrop Grumman Marine Systems
04.2006 - 04.2007
- Setup a Diamond Systems PC 104 Athena computer board with necessary peripherals for development.
- Developed a Windows XP Embedded OS with TCP IP, UDP, FTP and GUI services for our target system.
- Created and installed a Windows XP Embedded image for the Diamond Systems Athena board.
- Worked out details to be able to communicate with the target system from development system.
- Used Lab Windows to test ability to download and execute their run-time engine under Windows XPe.
- Installed AD Converter board drivers and used a C program to read all analog channels to a Flash Disk.
- Wrote a Lab Windows C program to read the USB serial data from an Inertial Measurement Unit (IMU).
- Assisted in the state machine development and testing.
- Developed the creation of the bench test apparatus necessary for the Capsule Control Electronics.
Silicon Validation Technician
Kelly Engineering Resources (Onsite at Intel Corp)
01.2006 - 12.2006
- Ran varies Unix and Windows based programs to collect data for product engineers.
- Diagnosed system bugs and glitches in order to finalize data collection.
- Interpret and extract validation data for use in silicon production.
- Monitored silicon process flow thru the Vector and Vortex application.
- Debugged and validated Intel’s advanced chip designs.
- Was responsible for delivery of completed test solutions in a high volume manufacturing environment.
- Involved in activities that included schematic entry, board and system level design verification and validation.
- Set up test systems and responsible for documentation of debug and solve factory test issues.
Level 2 Computer Technician
CompuCom Excell Data (Onsite at Intel Corp)
01.2005 - 12.2005
- Install, configure, and build PC systems for new employees.
- New employee and termination PC setups.
- Remedy Action Request (GEMS) service request ticketing for PC hardware for employees.
- Configured new employee PCs for use on the network via LAN line or WiFi.
- Generated new user accounts.
- Troubleshoot employee computer problems.
- Assisted fellow co-workers when needed.
- Prepared shipping memos and purchase orders (PO) for internal transfers and shipments.
Mobile Electronics Manager
Good Guys
03.2002 - 01.2005
- Reduced waste and pursued revenue development strategies to keep department aligned with sales and profit targets.
- Maintained positive customer relations by addressing problems head-on and implementing successful corrective actions.
- Maintained professional demeanor by staying calm when addressing unhappy or angry customers.
- Cultivated positive rapport with fellow employees to boost company morale and promote employee retention.
- Established performance goals for employees and provided feedback on methods for reaching those milestones.
- Managed sales with daily sales goals.
- Trained associates with details of specialized products and tools.
- Administered employee payroll and benefits.
- Opened and closed location and monitored shift changes to uphold successful operations strategies and maximize business success.
- Established team priorities, maintained schedules and monitored performance.
Education
Bachelor of Science - Computer Science
San Jose State University
San Jose, CACertificate # 605008087921646 -
Red Hat Enterprise Linux 5 Certified Technician
San Jose, CASkills
- Databases: Cassandra, Oracle, Sybase, MySQL
- Tools: Ansible, Reaper, cqlsh, Oracle Grid Control, SQL Loader, GoldenGate Replication, Remedy, F5 BigIP, Jira
- Performance tuning
- Data encryption
- Backup and recovery
- Big data technologies
- Database monitoring
- Data validation
- NoSQL databases
- Database migration
- Capacity planning
- Risk analysis
Languages
Cambodian
Native or Bilingual
English
Native or Bilingual
Interests
- Crafting and DIY Projects
- Growing herbs, vegetables, or fruits in home gardens
- Designing and Printing 3D Models
- Gardening
- DIY and Home Improvement
- I like working with my hands and fixing things
Timeline
Sr. Database Engineer
Openwave Messaging (Lumine Group)
09.2023 - 10.2024
Database Engineer IV
Synchronoss (Openwave Messaging)
10.2017 - 09.2023
Sr. Database Administrator
Visa
01.2009 - 09.2017
Sr. Production Operations System Administrator
Cybersource (Visa)
04.2007 - 01.2009
Trident Systems Engineer
Northrop Grumman Marine Systems
04.2006 - 04.2007
Silicon Validation Technician
Kelly Engineering Resources (Onsite at Intel Corp)
01.2006 - 12.2006
Level 2 Computer Technician
CompuCom Excell Data (Onsite at Intel Corp)
01.2005 - 12.2005
Mobile Electronics Manager
Good Guys
03.2002 - 01.2005
Bachelor of Science - Computer Science
San Jose State University
Certificate # 605008087921646 -
Red Hat Enterprise Linux 5 Certified Technician
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