Summary
Overview
Work History
Education
Skills
Certification
Websites
Languages
Timeline
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Yixuan (James) Dang

San Jose,CA

Summary

Accomplished Senior Network Software Engineer at Cisco Systems, Inc.(9 years exp in network testing + development), specializing in Python, Kubernetes and Linux. Proven track record in leading innovative projects, including network automation and microservices architecture. Strong problem-solving skills and expertise in AWS/cloud solutions, delivering impactful results while collaborating effectively with cross-functional teams.

Overview

8
8
years of professional experience
1
1
Certification

Work History

SENIOR SOFTWARE DEVELOPER

Cisco Systems, Inc.
San Jose, CA
12.2022 - Current
  • Led development of embedded NSO, containerized NSO and deployed in a customized Kubernetes system with completed integration with Kafka, NATs, postgres DB, health monitoring and more. (60% Golang, 30% Bash Shell Script, 10% Erlang)
  • Led development of traffic engineering manager(te-manager), containerized java based application server, waiting and subscribe to NSO restconf stream, has the capability of intercept the service payload and updating the payload before it reach to network devices.
  • Led development of NSO in EKS, containerized NSO and deployed in AWS EKS with fully integrated with NLB, EFS, EBS, etc.
  • TME/CX/Customer support with T-mobile, Verizon, Dish, etc.
  • Minor projects: package-verification; PnP(maintenance mode)
  • Launched AI initiative using pre-trained LLM data model to automate unit test case generation. Completed initial fine-tuning of Llama2 model and hosted chatbot on Hugging Face.(for a doc agent POC)

SOFTWARE DEVELOPER

Cisco Systems, Inc.
San Jose, CA
07.2020 - 12.2022
  • Contributed to backend projects by coding, utilizing 80% Python and 20% Java.
  • Led development of Cisco NSO Subscriber Microservices Infrastructure Core Function Package(SMI CFP) Team.
  • Developed Python packages for communication between SMI CFP, Cluster Manager(K8s).
  • Utilized YANG model to create NSO packages. Dev test for NETCONF/RESTCONF API.
  • Collaborating directly with T-Mobile customer engineers.
  • Simultaneously worked on Cisco Plug and Play(PNP).
  • Engaged in both Erlang and Python versions of Cisco Plug and Play, focusing on modernization efforts. Facilitated transition from legacy Erlang system to new Python-based solution for improved efficiency for PNP.

SOFTWARE QA ENGINEER

Cisco Systems, Inc.
San Jose, CA
11.2017 - 07.2020
  • Executed test plans for backend projects, balancing 50% manual and 50% automation tasks.
  • Developed projects utilizing Cisco NSO(Network Service Orchestrator), including vBranch and SDWAN for provisioning and deployment.
  • Conducted manual testing involving lab setup and configuration of switches and routers.
  • Implemented testing scripts for SD-WAN (Viptela)
  • Authored automation tests utilizing Python and TCL languages.
  • Scaled testing to support up to 8000 virtual deployment devices in network simulations.
  • Mentored two full-time employees and multiple contractors within the testing team.

SOFTWARE QA ENGINEER

GSS Infotech CT, Inc
San Jose, CA
01.2017 - 11.2017
  • Create, review , and execute test plans and cases on Cisco network devices. (routers, switches)
  • Tested various virtualization deployments on physical servers with specific software images.
  • Authored automation scripts utilizing Python, Tcl, and Linux shell scripting.
  • Created automation script for installation and upgrade processes.

Education

Master of Science - Electrical and Electronics Engineering

State University of New York
Buffalo, NY
01.2016

Bachelor of Science - Communication Engineering

Beijing University of Post and Telecommunications
Beijing, China
01.2013

Skills

  • System Knowledge: Linux(Ubuntu, CentOS), ESXi, Windows AD
  • Internet Protocols: DHCP, DNS, TCP/IP, TLS
  • Programming skills: Python, Bash(Shell Script)
  • Tools: Docker, Jenkins
  • Management: Organization, Leadership, Dedication

Certification

  • Cisco Certified Network Associate(CCNA) - Switch and Routing
  • AWS Certified Solutions Architect - Associate
  • Certified Kubernetes Administrator (CKA)

Languages

  • English, Fluent
  • Mandarin, Native

Timeline

SENIOR SOFTWARE DEVELOPER

Cisco Systems, Inc.
12.2022 - Current

SOFTWARE DEVELOPER

Cisco Systems, Inc.
07.2020 - 12.2022

SOFTWARE QA ENGINEER

Cisco Systems, Inc.
11.2017 - 07.2020

SOFTWARE QA ENGINEER

GSS Infotech CT, Inc
01.2017 - 11.2017

Master of Science - Electrical and Electronics Engineering

State University of New York

Bachelor of Science - Communication Engineering

Beijing University of Post and Telecommunications

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Yixuan (James) Dang