Renjie Zhu

• Lead a team of QA engineers in designing and implementing automated test suites for web-based applications, Linux system and cloud-based solutions via Selenium, Python, and Java.
• Collaborated with cross-functional teams (Developer and Advanced Service Team) to understand project requirements and ensure test coverage in Agile process via Rally and Jira for software development lifecycle.
• Conducted comprehensive test plans and test cases to validate software functionality and performance, including function test, Scale test, Performance test, black/white test, upgrade test, migration test, High Availability and Redundancy test to ensure high-quality deliverables.
• Identified, documented, and tracked software defects using issue tracking systems such as CDETs, QDDTs and Jira.
• Implement continuous integration and continuous deployment (CI/CD) pipelines using tools such as Jenkins and GitLab.
• Deep understands of Network Management Software and Protocols including SNMP, Telnet, XML Collections.
• Hands-on experience for Testing Tools and Simulators like SAPro, MIMIC, Cisco Packets Tracer, GNS and Tomcat Apache
• Mentor junior QA engineers on best practices, testing methodologies, and automation techniques.

### Achievements ###
• Led scale setup for a 10K simulators environment
Led QA team to setup a scale environment to meet the requirement for a 10k network devices support, including simulators assessment, SAPro, MIMIC, Cisco Packets Tracer, GNS and Tomcat Apache, setup the scale and performance test environment.

• Implemented Automated Testing Framework
Celebrated with automation team to develop and implement an end-to-end automated testing framework using Selenium and Python, resulting in a 60% reduction in manual testing efforts and a significant improvement in test coverage.

• Led Successful QA Initiatives
Led QA team in implementing quality assurance initiatives that resulted in a 30% decrease in post-release defects, improving overall software quality and customer satisfaction.

• Received Recognition for Bug Detection and Resolution
Received company-wide recognition for detecting critical bugs early in the development lifecycle, resulting in a significant reduction in production incidents and ensuring a smoother user experience for customers.

• Contributed to Product Performance Optimization
Collaborated with development teams to identify and address performance bottlenecks, resulting in a 30% improvement in application response time and enhanced scalability of software products.

• Improved Test Coverage and Documentation
Enhanced test coverage by 40% through comprehensive test case documentation, traceability matrices, and test reports, providing clear visibility into testing progress and results for project stakeholders.

• Conducted comprehensive application security assessments for web and mobile applications, Java based software, identifying vulnerabilities and providing recommendations for mitigation.
• Developed and implemented threat models for new and existing products, collaborating with development teams to integrate security best practices into the software development lifecycle.
• Led secure code reviews to identify and remediate security flaws in codebase, resulting in a significant reduction in potential vulnerabilities.
• Managed vulnerability management programs, including scanning, prioritization, and remediation tracking to ensure timely resolution of security issues.
• Conducted penetration testing and red team exercises to simulate real-world attacks and enhance overall security posture.
• Collaborated with cross-functional teams to develop and enhance incident response plans, ensuring quick and effective response to security incidents.
• Scripts maintenance and Python to automate Security testing flow and environment.
• Leading Cisco Security Scanners, Cyber Scan, CVE Management (Common Vulnerabilities and Exposures) and drive developer team to fix bugs and verification.
o Tenable.io: Basic Network Scan, Compliance Policy Audit, Cloud Security, Web App Scan
o Rapid 7: Web App Scan
o CAVE ZAP: OWASP ZAP
o Qualys
• Deploy Security Test Environment: Cisco ISE, AAA, TACACS+, RADIUS, x509, TLS/SSL, RBAC, Virtual Domain.

### Achievements ###
• Led QA team to set up a security testing environment from zero, to test Service Provider Level Software
Requiring there to be no critical/high CVE vulnerabilities/exposures in the new system (Linux Based) which resulted in:

Vulnerabilities testing environment setup

Vulnerabilities Management Tools automated 70% deployed via Python
Installation and tuning jobs 100% complete in time
Meeting the testing requirements.
Documentation in wiki.

• Reduced Vulnerabilities and Exposures by 95%
Implemented a comprehensive security strategy resulting in a 95% reduction of common vulnerabilities and exposures across the web-based application and cloud software infrastructure.

• Achieved Rapid Response Resolution
Build up vulnerabilities detection and report system to keep tracing security incidents with rapid response, minimizing software security impact during development.

• Security Testing and Vulnerability Assessment:
Conducted security testing and vulnerability assessments on products, identifying and remediating security vulnerabilities (e.g., CVEs) to enhance products security posture and protect against potential cyber threats.

• Proficient in configuring and managing Cisco networking techniques: IGP (RIP, OSPF, EIGRP), BGP, STP(RSTP), VLAN, VXLAN, MPLS, VidMon, Carrier Ethernet, MEF, QoS, IP SLA, Y.1731, L2/L3 VPN, Traffic-Engineering, SD-WAN, Cloud and Virtualization, SDN, Load Balance, Pseudowire,
• Install and deploy Service Provider Network and Enterprise from End to End: Access, Distribution, Aggregation and Core layers.
• Install and maintain Data Centre Virtualization environment in lab: Nessus 5k, 7k and 9k, VMware ESXi and Cisco UCS
• Set up network testing environment including Network protocols configuration and technologies Familiarity with network automation and scripting languages such as Python
• Experience with configuring and managing Cisco networking devices including routers, switches, firewalls and UCS servers: CRS10k, ASR9k, ASA55xx, ISR, Catalyst, ME34/36/38xx, MWR, 76xx.
• Configure Traffic Generators like IXIA and Spirent to simulate real environments.
• Configure L4-7 services integration in a data centre environment
• Maintain Lab in order

### Achievements ###
• Setup Service Provider Network from End to End
Led lab team start from zero to order devices, connect topology, configure network protocols, and deploy in different layers:
User Server: UCS B and C series
Access Layer: ISR38xx, ME34xx, MWR2941
Distribution Layer: Catalyst ,ME36xx, ME38xx, 76xx
Aggregation Layer: ASR9k, ASR1k
Core: CRS10k
Firewall: ASA55xx, FTD, FMC
AAA: Cisco ISE
Traffic Generator: IXIA and Spirent
Results: Delivery in time, meet the testing requirements.

• Achieved Cisco CCIE/CCNP/CCNA Certifications
Obtained Cisco Certified Internetwork Expert (CCIE) certification in Routing and Switching, plus CCNP and CCNA

• Received Recognition for Team Collaboration
Recognized for collaboration efforts with R&D teams, providing timely technical support and contributing to successful project outcomes.

• Improved Lab Efficiency
Implemented automation scripts for routine maintenance tasks, reducing manual effort by 30% and improving lab efficiency.

• Conduct market research and competitive analysis to identify market trends, customer needs, and opportunities for differentiation.
• Led cross functional teams to develop go-to-market strategies, optimizing product messaging.
• Craft compelling product messaging and positioning that resonates with target audiences and effectively communicates product value propositions.
• Think strategically and translate market insights into actionable marketing strategies and plans.
• Gather and analyse customer feedback and insights to inform product development and marketing strategies.

### Achievements ###
• Case: Bridge sales team and engineering team to drive Cisco Application based Network Monitoring Software and Cloud Visualization Solution go to market, accurate assessment of strengths and weaknesses, implement and demonstrate to customers.
Customer: China Telecom, China Unicom and Digital Distribution Australia
Result: Won the cases and won the Cisco CVG Collaboration Award.

• Case: Collaborate with product management, engineering and sales team to development and implementation of go-to-market & messaging plans for Cisco Big Data Analysis Solution.
Customer: China Wanda Group
Result: Successfully won the case by providing actionable insights, product development, marketing initiatives and pricing strategies, benchmark against competitions, quantify impact analysis for stakeholders. Deployed into several Wanda Key Buildings.

• Designed and implemented network management software applications for monitoring, troubleshooting, and performance analysis in service provider network.
• Rest API testing for Cisco Web Applications based software NBI
• Carried out Cisco QA testing process, Agile process, EDCS, PRRQ, Rally, CDETs, QDDTs and all Cisco Dev Test systems.
• Set up test environment, L2/L3 network devices, traffic generators(IXIA and Spirent), simulators(SAPro and Mimic)
• Tested via Telnet, SSH and RESTful APIs, microservices, and web-based applications for network monitoring, configuration management, and analytics.
• Integrated third-party APIs and services to enhance the functionality and interoperability of network software solutions.
• Conducted unit testing, integration testing, and code reviews to ensure the quality and reliability of software deliverables.
• Documented software design, architecture, and implementation details to facilitate knowledge sharing and collaboration among team members.
• Participated in agile development methodologies, including sprint planning, stand-up meetings, and retrospectives.

• Led testing team to execute network functional testing for VLAN, STP, RSTP, VPN, IP routing, DNS, DHCP, OSPF, BGP, MPLS
• Utilized network testing tools such as Wireshark, Linux tcpdump, Ixia, and Spirent to perform packet/frame analysis, traffic generation, and performance testing, functional testing, bug regression testing, black/white box Testing.
• Conducted comprehensive testing of networking equipment, including routers, switches, firewalls, and wireless access points, to ensure optimal performance and reliability.
• Documented test results, identified areas for improvement, and provided recommendations to enhance network performance and efficiency.
• Stayed updated on industry best practices, emerging technologies, and network product updates to continuously improve testing processes and methodologies.

### Achievements ###
• Performance Benchmarking:
Performed performance benchmarking and comparative analysis of network devices to assess performance metrics such as throughput, latency, packet loss, and CPU utilization, providing valuable insights for performance optimization and capacity planning.

• Regression Testing and Bug Resolution:
Managed regression testing processes for firmware/software releases, identifying and reporting bugs, and working closely with development teams to prioritize and resolve issues, ensuring software quality and reliability.

• Documentation and Reporting:
Developed test plans, test cases, and test procedures documentation for network device testing, ensuring comprehensive test coverage and reproducibility of test scenarios. Generated detailed test reports with actionable insights and recommendations for stakeholders.