Cisco

Software QA Engineer - 5+yrs - Routing/SDWAN/L2/L3/Ruby/Python

Bangalore · On-site · 5+ yrs · Senior · Full-time

  • ruby
  • python
  • go
  • trex
  • spirent
  • ixia

Senior SDET for Cisco Meraki MX/Catalyst testing with 5+ years automation experience in routing/SD-WAN and L2/L3 protocols.

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Posted 27 Oct 2026 · found on Cisco's own careers page

Interview prep: questions this posting points to

Written from 8 current Engineering postings on Cisco's own careers page — not questions Cisco has asked.

  1. Walk me through how you'd design a React + Ruby on Rails feature for managing wireless controllers and Access Points, where the backend needs to reflect real-time telemetry from thousands of deployed networks. How would you keep the UI from getting overwhelmed by that volume of live data?
    From the posting: “We use real-time telemetry from thousands of deployed networks spanning the globe to continuously improve the performance and stability of our products.sed to manage the wireless networks.Expertise on React JS and Ruby.Expertise in Cypress.Wireless Domain knowledge.Your Impact Design, develop, validate, and automate scalable features that simplify network management for customers.Strong React.js UI development experience, building modern, responsive, and scalable web applications.Collaborate with Product Management, TMEs, and cross-functional engineering teams to deliver impactful solutions.Deliver features on time with a strong focus on quality, reliability, and customer value.Experience with containerization, DevOps practices, Kubernetes, and cloud deployments.Experience in system design, code quality, and mentoring/guiding engineers on engineering best practices.Exposure to LLMs and AI-assisted development, with a proven ability to deliver high-quality, customer-focused software.Preferred: Exposure to or understanding of networking concepts and technologies”
  2. Customers start reporting that wireless controllers managed via the Cisco Wireless cloud dashboard are showing stale device status - the UI says access points are offline but they're actually fine. You're the engineer on this React/Ruby feature. How do you debug this?
    From the posting: “real-time telemetry from thousands of deployed networks spanning the globe to continuously improve the performance and stability of our products”
  3. This team uses real-time telemetry from thousands of deployed networks to continuously improve products. Walk me through a time when you used production data or customer feedback to identify and fix a problem—what did you learn that changed how you build?
    From the posting: “use real-time telemetry from thousands of deployed networks spanning the globe to continuously improve the performance and stability of our products”
See all 63 questions More on this prep
Read the full job description

At Cisco, we know that technology can connect, empower, and drive us. Our mission is to simplify technology so our customers can focus on what's most meaningful to them: their students, patients, customers, and businesses. We’re making IT and networking easier, faster, and smarter with technology that simply works!

About the team

The Cisco MX QA team takes pride in ensuring the end-to-end system of the Cisco Meraki MX and Cisco Catalyst product line is ready to use. The team works on, but is not limited to, testing customer use cases, integration testing, scalability testing, stress and longevity testing. This team is also responsible for qualifying security services such as malware detection, URL filtering, web security, IPS, threat model, SD-WAN and SaaS/IaaS security capabilities all through a single Cisco Meraki Dashboard. Our products are used in over a million networks and our customers rely on our products to serve tens of millions of people.

With the large footprint that we have, quality is our highest priority. About the Job: Cisco is looking for a Senior Software Development Engineer in Testto join to support test qualification of our Dashboard that supports Cisco Meraki MX and Cisco Catalyst product offerings. As a Senior SDET, your responsibility includes designing and building testbeds, creating and executing the integrated/application tests that resemble customer use-case for SD-WAN and Security solutions over physical, cloud, on-prem Cisco Meraki MX and Cisco Catalyst products via Cisco Meraki Dashboard, and contributing to industry-leading technologies in the cloud ecosystem. As a part of a geographically distributed team, you will collaborate with multiple Cisco engineering teams and stakeholders around the globe to develop a fully furnished test strategy.

To be successful in this role, you need have motivation, curiosity, passion for problem-solving, and experience with telco technologies and automation as a breath. What You Will Be Doing Develop a comprehensive understanding of the use cases/workflows of the MX solution deployed in the customer environment. Participate in requirements/design discussions with Product managers & development team and represent the QA team. Design a test strategy document for the Cisco MX features and collaborate with other QA and development teams to cover all aspects of the features being developed.

Execution of tests and reporting test results, and test metrics pertaining to these tests. Develop automation scripts ahead of feature testing to enable CI/CD (i.e. Automation Driven Testing) Evaluate and develop simple features when required with Test Driven Development approach Evaluate and provide a fix for defects identified during testing Invest in AI driven innovation and out-of-the-box thinking to foster the originality of ideas to productize them. Analyse the test gaps that resulted in customer issues and incorporate them into the test strategy.

Proactively, identify gaps in the regression test automation and improve automation coverage. What You Will Be Bringing Bachelor’s / Master of Science Degree in Computer Science (or equivalent or a related field, or equivalent experience) 8+ years of experience in Software Development Engineer in Test in routing or SD-WAN domain with at least 5+ years of Automation/Development experience. In-depth knowledge of SDWAN, Security, Layer-2(VLAN/802.1Q), and Layer-3 (BGP/IP/OSPF/VPN/IPSec/NAT) and are at ease to ramp up quickly on new technologies and concepts. Proficiency in writing quality code with one of the programming languages such as Ruby, Python, and Golang.

Hands-on experience with AI coding tools and Gen-AI prompting techniques Good understanding of traffic generators such as TRex, Linux Tools, Spirent, IXIA, etc and ability to explore tools and techniques to improvise the testing Effective communication skills and proven track record of collaboration with stakeholders. What makes you stand out AI usage day-in and day-out Feature bug fixing with better quality in Firmware or Backend or UI The ability to communicate complex technical concepts clearly to peers and management Research of applications and Framework experience – Obtained patent(s), Published Whitepaper / Yellow paper on embedded solutions Experience with developing frameworks for CI/CD pipeline Working experience with Cisco and/or Cisco Catalyst Devices Why Cisco? At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds.

These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint. Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale.

Because our solutions are everywhere, our impact is everywhere. We are Cisco, and our power starts with you. Disclaimer To ensure that we hire the best talent in the right way, we follow a strict hiring process and recently, Cisco has been made aware of fraudulent recruiters claiming to be from the company. Please be advised that any communication from Cisco about careers will: be in direct response to an application you have submitted through the company career site begin with screening or an interview originate from a Cisco email address, and be conducted across email, phone, or WebEx Cisco will never make a job offer without conducting an interview process or ask you for money in any way.

If you have been requested to apply for a role or have received an offer from a site other than https://careers.cisco.com or cisco.wd5.myworkday.com , do not provide any personal identifying information, including your Aadhaar or other personal identifying number, birth certificate, banking information, driver's license, or passport. If you are the target of a recruiting scam, consider filing a report with your local law enforcement authorities. Cisco bears no responsibility, and cannot be held liable, for any claims, damages, expenses, or other inconvenience resulting from or in any way connected to recruiting scams.

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