Senior Information Security Engineer - VAPT, Thick client application

9 Hours ago • 4 Years +

Job Summary

Job Description

The Senior Information Security Engineer will be responsible for security automation and conducting penetration testing on Zscaler applications and infrastructure. The role involves prioritizing vulnerabilities for engineering and operations teams, reviewing security bulletins, and conducting security architecture reviews, threat modeling, and design reviews. The ideal candidate will have experience in manual security assessments for web apps, thick clients, and APIs, along with a strong foundation in security, cryptography, Unix systems, and networking. This position requires a proactive approach to identifying and mitigating security risks within the cloud security platform. The role requires collaboration with various teams to ensure the security of Zscaler’s products and services, including hands-on work.
Must have:
  • Proficient in manual security assessments for web apps, thick clients, and APIs
  • 4+ years of experience, CVE publication, CTF participation, red teaming, and exploit development preferred
  • Skilled in thick client pen testing across Windows, Mac, Linux, Android, and iOS
  • Experienced in security architecture reviews for networks, thick clients, and web apps
  • Strong foundation in security, cryptography, Unix systems, and networking

Job Details

About Zscaler

Serving thousands of enterprise customers around the world including 40% 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're looking for an experienced Senior Information Security Engineer to join our Cyber and Data Security team. Reporting to Sr. Manager, Security Research, You'll be responsible for:

  • Working on Security Automation and conduct pen testing on Zscaler Applications and infrastructure
  • Helping the team prioritize vulnerabilities for engineering and operations team
  • Reviewing security bulletins and related news, stay apprised of current threats and trends
  • Conducting Security Architecture reviews, Threat Modeling, Design review

What We're Looking for (Minimum Qualifications)

  • Proficient in manual security assessments for web apps, thick clients, and APIs using top tools
  • 4+ years of experience, CVE publication, CTF participation, red teaming, and exploit development preferred
  • Skilled in thick client pen testing across Windows, Mac, Linux, Android, and iOS
  • Experienced in security architecture reviews for networks, thick clients, and web apps
  • Strong foundation in security, cryptography, Unix systems, and networking

What Will Make You Stand Out (Preferred Qualifications)

  • Experience with product security controls and processes, including vulnerability disclosure and management
  • Experience working for a security product and solutions provider

#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!

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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About The Company

Zscaler enables the world’s leading organizations to securely transform their networks and applications for a mobile and cloud first world. Its flagship services, Zscaler Internet Access and Zscaler Private Access, create fast, secure connections between users and applications, regardless of device, location, or network. Zscaler services are 100% cloud-delivered and offer the simplicity, enhanced security, and improved user experience that traditional appliances or hybrid solutions are unable to match. Used in more than 185 countries, Zscaler operates the world’s largest cloud security platform, protecting thousands of enterprises and government agencies from cyberattacks and data loss.



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