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Senior Threat Researcher - Vulnerability Research, Fuzzing, Windows

Bangalore, IND

About Zscaler

Serving thousands of enterprise customers around the world including 45% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location.

Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. 

Our Engineering team built the world's largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy.

We are looking for an experienced Senior Threat Researcher to join our Security Research Team. Reporting to the Senior Director, Threat Intelligence, you’ll be responsible for:

  • Leading advanced vulnerability research projects to enhance our security solutions
  • Conducting in-depth research to identify zero-day vulnerabilities in popular software applications
  • Developing proof-of-concept exploits to demonstrate the potential impact of zero-day vulnerabilities
  • Mentoring and guiding junior researchers to foster a culture of continuous learning and innovation
  • Documenting findings and providing detailed technical reports as well as present research at industry conferences

What We’re Looking for (Minimum Qualifications)

  • Required 5+ years in vulnerability research and exploit development
  • Significant experience with debuggers (OllyDbg, WinDbg, or x64dbg) and disassemblers/decompilers (IDA Pro or Ghidra)
  • Proficient in common software vulnerabilities and binary exploitation
  • Experience building automated fuzzing tools to discover new vulnerabilities
  • Track record of responsible disclosure with documented CVEs for Microsoft products and services
  • Comfortable presenting technical research and speaking in front of large audiences

What Will Make You Stand Out (Preferred Qualifications)

  • Professional English writing skills and experience in drafting blogs, technical reports, etc
  • Deep knowledge of Windows operating system internals such as the kernel architecture and related components
  • Familiar with Windows security features such as ASLR, DEP, and Control Flow Guard as well as evasion techniques

#LI-Hybrid

#LI-PM5

At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

  • Various health plans
  • Time off plans for vacation and sick time
  • Parental leave options
  • Retirement options
  • Education reimbursement
  • In-office perks, and more!

Learn more about Zscaler’s Future of Work strategy, hybrid working model, and benefits here.

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines.

Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link.

Pay Transparency

Zscaler complies with all applicable federal, state, and local pay transparency rules.

Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

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In consideration of Zscaler, Inc. or any of its subsidiaries (together referred to as “Zscaler”) granting the opportunity to apply for a position with Zscaler, I agree (a) to use Confidential Information for the sole purpose of evaluating a position with Zscaler, (b) that I will not disclose Confidential Information to anyone outside of Zscaler, (c) that all Confidential Information disclosed by Zscaler (and any derivative works thereof) remains the property of Zscaler, and no license or other rights to Confidential Information is granted or implied, (d) not to use the systems of my current employer to access any Confidential Information or download any Confidential Information onto the systems of my current employer, (e) immediately upon request, to return or destroy all the embodiments and copies of any Confidential Information, and (f) that “Confidential Information” means any nonpublic information disclosed to me by Zscaler, which Zscaler labels or otherwise identifies as confidential or a reasonable person would understand to be confidential.

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