E*TRADE from Morgan StanleyLinux System Administrator Network Architect
May. 2012 - Sep. 2015Chicago, Illinois, United StatesAs a Linux Systems and Network Architect for tradeMONSTER, I played a pivotal role in developing and maintaining the #1 ranked options trading platform in the US, as recognized by Barron's for several consecutive years. Key Achievements: 1. Implemented Juniper Q Fabric Spine and Leaf architecture, modernizing network infrastructure and enhancing performance. 2. Executed zero-impact migrations and redesigns across all environments, ensuring uninterrupted trading operations. 3. Transitioned to multi-homed architecture using ARIN-assigned IP ranges and ASNs, improving network resilience and redundancy. 4. Deployed secure VPNs and P2P solutions for partners, customers, execution vendors, and market data sources. 5. Implemented and verified multicast routing for real-time market data streams across production, performance, development, and QA environments. 6. Designed and deployed a remote disaster recovery site using EBGP, enhancing business continuity. 7. Developed Python scripts for Asterisk VOIP PBX management and database optimization, including future table partitioning. 8. Implemented various Linux HA clusters using technologies like heartbeat/corosync, keepalived, MySQL replication, and Riverbed Zeus load balancing. 9. Safely migrated from legacy to new hardware using layer three gateways, eliminating single points of failure. Impact:
- Consistently maintained #1 ranking for options trading platform
- Significantly enhanced network performance, reliability, and security
- Improved disaster recovery capabilities and system availability
- Streamlined operations through automation and scripting The platform's success led to a merger with OptionsHouse and subsequent acquisition by E*TRADE, validating the quality and innovation of our technological solutions. This experience showcased my ability to architect and implement complex, high-performance systems crucial for financial trading platforms.