# Brandon Yu > IT/Network Location: San Francisco Bay Area, United States Profile: https://flows.cv/brandonyu IT professional with CompTIA Network+ and Security+ certifications and hands-on experience supporting enterprise SaaS platforms, cloud infrastructure, and network systems. Skilled in troubleshooting application, system, and connectivity issues across AWS and Microsoft environments. Experienced in TCP/IP, routing, switching, and identity and access management. Proven ability to resolve high-impact incidents, support large user bases, and collaborate across cross-functional teams. Background in software engineering brings strong understanding of application and cloud system behavior. Feel free to contact me at brandonyu415@gmail.com ## Work Experience ### Independent study & Hands-on Labs @ IT & Network Engineering Experience (Labs & Projects) Jan 2025 – Present •Completed hands-on IT and network engineering projects to reinforce skills in network design, security, and troubleshooting; earned CompTIA Network+ N10-009 and CompTIA Security+ SY0-701 certification •Performed packet capture and traffic analysis using Wireshark and NetFlow to troubleshoot anomalies Designed and maintained a virtualized enterprise network environment using VMware and OPNsense •Implemented VLAN segmentation, firewall rules, NAT, VPN tunnels, and IDS/IPS •Simulated real-world network failures including failover, load balancing, and bandwidth testing ### CompTIA Security+ SY0-701 Certification @ CompTIA Jan 2026 – Jan 2026 ### CompTIA Network+ N10-009 Certification @ CompTIA Jan 2025 – Jan 2025 ### Application Software Engineer @ eGain Corporation Jan 2022 – Jan 2023 | United States •Developed and maintained enterprise SaaS applications integrated with Microsoft Teams for 8,500+ users •Reduced cloud resource costs by over 50% through backend performance optimizations and system efficiency •Diagnosed and resolved authentication and access issues involving Azure AD, OAuth, and IAM systems •Investigated and troubleshot cloud-based incidents across AWS services including Lambda, DynamoDB, and S3 •Collaborated with cross-functional teams to deliver application enhancements and resolve production issues ### Technical Support Analyst @ eGain Corporation Jan 2020 – Jan 2022 •Provided support to customers by diagnosing and resolving high-severity technical issues with SLA adherence •Connected to secure AWS EC2 instances via RDP to perform log analysis and troubleshoot server-side application and infrastructure issues •Leveraged SQL queries to analyze production data and support data-driven investigation of application incidents •Worked with external partners including Cisco and Microsoft on escalated technical cases ### IT Office Associate @ SSA & Company Jan 2020 – Jan 2020 •Installed, configured, and maintained IT hardware and software in PCI-compliant environments, supporting secure, high-volume transactions for thousands of users weekly •Ensured uptime and reliability of PoS systems (NCR Silver, Retail Pro) in high-foot-traffic environments •Configured Microsoft 365 environments and printers, improving end-user productivity and system usability ### Software Engineer @ Hack Reactor Projects Jan 2019 – Jan 2019 Airtimize - A lodging reservations marketplace built with React PostgreSQL, Cassandra, NGINX, and Redis •Scaled bookings service to handle millions of listings data with high website traffic simulation achieving around 700 RPS throughput •Conducted measurements on multiple databases with a variety of optimizations through query speed comparisons, scalability concerns and ACID compliance •Restructured PostgreSQL with b-tree indexing to accelerate lookup time •Deployed microservice on AWS EC2 with different service-oriented architectures utilizing a variety of NGINX load balancing mechanisms and Redis caching strategies •Reached sub 100ms latency with a 99% availability rate using New Relic as an analytic metric and loader.io for stress testing ### Software Engineer @ Hack Reactor Projects Jan 2019 – Jan 2019 GastroGnome - A restaurant review application (React, Express, MongoDB, Docker) •Implemented with React a dynamic header component coupled with a restaurant reviews chart analytic microservice for optimal user visualization •Created CRUD operations routed to Express server connected to MongoDB database following RESTful API •Developed a continuous testing and deployment pipeline using CircleCI with Jest and Enzyme testing Launched proxy server to manage deployed services on AWS EC2 using multiple Docker containers that are composed into a functional single-page application •Optimized Google page load speed analytics by over 200% by with Brotli compression and Webpack bundle minification ### Software Engineer @ Personal Projects Jan 2018 – Jan 2018 | San Francisco Bay Area findFoodTruckSF - An iOS application built with Swift and native MapKit UI displaying nearby food truck locations in San Francisco relative to a user’s current location using Alamofire to fetch API data. Saved bookmarked food truck preferences are kept using CoreData. Clustering used to minimize map annotation rendering ### Software Engineer @ Personal Projects Jan 2017 – Jan 2017 | San Francisco Bay Area Java Subset Compiler and Debugger - A compiler and debugger made for language X (a subset of Java) to emulate the conversion of Java bytecode from source code on the JVM(Java Virtual Machine). The bytecodes are put into the lexer and converted to tokens. These tokens are then parsed using a recursive descent processing bytecode program generated from an Abstract Syntax Tree, which are interpreted by virtual machine we create ## Education ### Certificate of Completion in Advanced Software Engineering Immersive Program Hack Reactor ### Bachelor of Science - BS in Computer Science San Francisco State University ### City College of San Francisco ### Bachelor of Science - BS in Computer Science San Francisco State University ### Bachelor of Science - BS in Computer Science San Francisco State University ## Contact & Social - LinkedIn: https://linkedin.com/in/brandonyu415 --- Source: https://flows.cv/brandonyu JSON Resume: https://flows.cv/brandonyu/resume.json Last updated: 2026-03-29