Senior SDET Quality Assurance Engineer

David Phan

SOFTWARE QA ENGINEER

ETHERNET, NETWORKING, TELECOM AND SECURITY DOMAIN

**** *. **** ****** *** Jose, CA 95131 • ************@*****.*** • 408-***-**** PROFESSIONAL EXPERIENCE SUMMARY:

● Expert in test strategy and execution, including designing comprehensive test plans, procedures, and executing unit, integration, system and regression testing.

● Strong background in defect management including log analysis, collaboration with development teams for debugging and verification of fixes.

● Proficiency in L2 Ethernet protocols like VLAN, G.8032-CFM, EAPS, ESRP, VRRP.

● Proficiency in L3 routing protocols OSPF, ISIS, BFD, BGP, Software/hardware ACL, QoS.

● Proficiency in Multicast protocols like PIM DM, PIM-SSM, IGMPv2/v3, IGMP snooping, MLDv1/v2, MVPN.

● Proficiency in MP-BGP to support additional address families, like VPNv4/VPNv6, EVPN for L2/L3 VPN, Multicast MVPN-IR.

● Proficiency in L2 security protocol MACSec (Encryption/Decryption) L2 traffic.

● Skilled in updating and executing automated test scripts using Verilog XL, TCL/Expect, Spirent Fanfare iTest, and Python Scale Soak Test at overnight and long weekend SOAK in Non-disruptive and disruptive to improving test coverage and efficiency.

● Proficient in using advanced traffic generators such as IXIA IxPlorer, IxNetwork and Spirent Test Center for system validation and performance testing. TECHNICAL SKILLS:

● LAN Technology: VLAN IE3 802.1Q, G.8032, CFM, ERPS, EAPS, BFD, STP, EAPS, ESRP, ELRP, VRRP, IGMP, IGMP snooping, MLDv1/v2, LACP, LLDP, MCLAG.

● IPv4 Routing Protocols: RIP, OSPF, IS-IS, BGP; MBGP, MPLS, LDP, EVPN, EVLAG, ETREE, DHCP, Secondary IPv4/v6.

● IPv6 Routing Protocols: RIPng, OSPFv3, IS-IS, BGP for IPv6, DHCP, Secondary IP.

● Multicast Routing Protocols: PIM-DM, PIM-SSM.

● HA features: VRRP.

● Traffic Management: SWACLs, HWACL, Policy Based Routing, Route Filters.

● Test Tools: IXIA:IxExplorer, IxNetwork; SmartBits: 6000C, 6000B; Agilent RT; Adtech/AX4000 Tester; Nokia Flexi Router, Cisco GSR 12000 router, CRS router, Spirent Test Center, HP Quality Center, Perforce, Test Rail, MG Soft Netconf RPC.

● Scripting: Expect, TCL, Spirent Fanfare Itest, Python.

● Project Management: Agile Methodologies (Scrum), Sprint Planning, Daily Standups, Retrospectives.

● Tools: JIRA (Agile Project Tracking, Defect Management, Sprint Backlogs), Confluence.

● Troubleshooting Tools: Wireshark, tcpdump, packet captures.

● Security Protocols: SNMPv3, SSH, syslog over TLS, Telemetry, MacSec, Trap, Alarms. WORK EXPERIENCE:

Ciena Corporation - San Jose Oct 2011 – Nov 2025

Senior SQA Engineer

● Designed and authored Test Plan Documents covering new features, system, regression, and sanity testing for Carrier Ethernet Switches.

● Conducted extensive testing for next-generation routers, including features such as ZTP, RTUC, RTFD, NTP, Syslog, and gNMI telemetry.

● Validated Layer 2 and Layer 3 protocols, ensuring performance, stability, and compliance in complex networking environments.

● Prepared test plans and reports for software releases with 100% accuracy and timely delivery.

● Bringing up the topology, License installation, Configuration/YANG module, Functionality, Scalability, and System testing of routing protocols OSPF, ISIS, BFD, BGP, MPLS, ICMPv4/v6.

● Functionality, Scalability and System testing of Multicast protocols PIM-SSM, IGMPv2/v3, IGMP Snooping, MVPN.

● Functionality and System testing of L2 protocols like G.8032-CFM, CFM, CCM, LBM/LBR, LTM/LTR, VLLI, LACP, MCLAG.

● Functionality, Scalability and System testing of L2/L3 VPN with BGP as the control plane like EVPN, EVLAG (A/A), ETREE (AT&T) technology.

● Debugged with developers to narrow down the root cause, raise bugs in JIRA with precise steps to reproduce, problem description, proper logs and files, collect State-dump, Back Trace in crash.

● Verify the Ready-To-Test bugs and close it accordingly.

● Preparing failure analysis for regression failure.

● Training in the entry level QA engineers.

Extreme Networks - San Jose Jul 2004 – Nov 2011

Senior SQA Engineer

● Developed, tested, debugged the L3 Service Provider system test plan that is comprised of complex topologies with all Extreme platforms: BCM Standalone and stackable Summits X250e, X450a, X460, X480, X670; BCM embedded Aspen:BD8K; X-11 embedded BD20K; Genesis embedded BD10K, BD12K. L3 Service Provider comprises integrated protocols with E-BGP & I-BGP in IPv4/IPv6, OSPFv2/v3, RIP/RIPng, IS-IS IPv4/v6, PIM-SM.

● Tested the Convergence Performance of EAPS in THT Aspen-bd8K customer setup; and carried out testing, debugging with developers, and reporting test results.

● Wrote, tested, bug reported, and worked closely with developers to debug issues of a detailed functional test plan of ERPS (Ethernet Ring Protection Switching) ITU-T G.8032/ Y.1344 Recommendation. The functional features include major and many attached subrings with CFM in revertive and non-revertive switching in various complex topologies recommended by ITU. The integration features consisted of ERPS with EAPS, ELRP, STP, MLAG, OSPF & BGP, VPLS; and tested the convergence performance between EAPS & ERPS protocol.

● Implemented and enhanced the detail of functional and system test plan of EAPS

(V1&V2) (Ethernet Automatic Protection Switching) and carried out scripting, testing, debugging and reporting the defectives encountered during sanity check, convergence, limit, scaling, integration under various Extreme Platforms: Summits, Aspen, Voyager, Pathfinder, Mariner, Olympic.

● Designed the DDMI functional test plan to verify EXOS being able to detect and function properly with various XFP, SFP+ 1Gig and 10 Gig Optical Modules from different vendors, and carried out testing, debugging and bug reporting.

● Write a detailed functional test plan of VRRP, ESRP, ELRP and automate TCL/EXPECT scripting, testing, bug reporting.

● Enhanced, tested and bug reported for the functional test plan of IGMP-snooping, MLDv1, OSPFv3, RIPng.

Nokia - Mountain View Oct 2003 – May 2004

SQA Engineer

● Developed a detailed functional test plan of SA WAP feature on NOKIA Flexi Router and carried out Scripting, testing, debugging and bug reporting.

● Utilized NOKIA WAP browser and SGSN simulator to access Internet Web Server application through WAP gateway.

Zaffire / CenterPoint Broadband Technology July 2000 – July 2002 Senior Test Design Engineer

● Developed detailed test plans to verify functionality of Optical Modules comprising EDFA, TXM, OAM, OC-3, OC-12, OC-48, and OC-192 of Z3000 DWDM chassis.

● Sustained and enhanced the functional test fixture of EDFA Optical Power Amplifier Module by using VSB6.0 and LabVIEW.

● Training technicians to execute and debug the test cases. Cadence Design Systems - San Jose Mar 1997 – July 2000 Senior SQA Engineer/Test Lead

● Developed detailed functional test plans of QUEST Vector Debug, Logic Analyzer and In Circuit Simulation using Verilog-XL and carried out testing, debugging and bug reporting.

● Developed test cases using Verilog-XL language to verify the Cadence products: Saturn, Mercury IC Emulators

Zitel Corporation - San Jose July 1991 – Mar 1997

Test Engineer

● Developed a detailed functional test plan to validate the microcode of IBM ZCAT/RAMAC RAID 5 and CACHE Memory Sub-Storage system, and carried out testing, debugging, and bug reporting.

● Designed Fault Error Injector to validate the logic of FPGA, ASIC, and embedded firmware of storage systems.

● Designed Functional test fixture hardware and wrote C integrated with M10/M12 Intel assembly language to validate the functionality of blades in RAMDISK UNISYS storage system.

Network Equipment Technology Aug 1988 – July 1991

Test Engineer

● Sustained FLUKE functional tester by enhancing MC68K assembly program and modified hardware circuitries.

● Developed a detailed test plan to validate the IDNX70 DWDM System composed of HSD, USD, QSD-2, T1-Trunk BEZS, VOICE cards.

● Performed Failure Analysis from deployed customer IDNX70 products. EDUCATION:

California State University, Sacramento

B.S.EE in Electronic & Electrical Engineering

Award and Certificates:

Leadership training for technical leaders (Cadence University); C, Verilog-XL & HDL, TCL/Expect programming - San Jose, CA ZCAT/RAMAC program award - Fremont CA

SCSI-2 in-depth exploring & programming certificate - Santa Clara, CA Z80K Test Vector Programming - Teradyne Walnut Creek, CA

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