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Staff Software Development Engineer - Browser Team

Madrid, ESP; Remote - Finland; Remote - France; Remote - Spain; Remote - Sweden; Remote - UK; Valencia, ESP

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 are looking for an experienced Software Engineer to join our Cloud Browser Isolation Product Team. Reporting to the Senior Manager, Software Development Engineering, based in Madrid, you will be working remotely and you'll be responsible for:

  • Owning the definition, design, implementation, testing, delivery, monitoring, and reliability of multiple core components to ensure optimal browser streaming experiences for customers.
  • Collaborating with stakeholders to analyze requirements and develop scalable, secure, and extensible technical solutions for cloud applications.
  • Writing high-quality, testable, maintainable, and secure code, while integrating appropriate tests into CI/CD pipelines for reliable deployments.
  • Fostering team growth through mentoring and knowledge sharing, maintaining a focus on continuous learning and improvement.
  • Taking full ownership of deployed services, including on-call responsibilities, to ensure reliability and minimize production incidents.

What We Are Looking For (Minimum Qualifications):

  • 6+ years of professional experience in developing applications for Linux and high-traffic cloud-based systems, with advanced expertise in C++.
  • Proven experience in implementing and maintaining features in Chromium, including contributions at various layers such as content, browser, core, compositor, and networking.
  • Strong understanding of modern web programming concepts and languages, such as JavaScript, TypeScript, or similar technologies.
  • Familiarity with networking technologies like gRPC and WebSockets, with hands-on implementation expertise in robust communication architectures.
  • Extensive experience with software quality automation tools, testing frameworks, and CI/CD pipelines to streamline development and deployment processes.

What Will Make You Stand Out (Preferred Qualifications):

  • Expertise in protocols such as HTTP/HTTP3, UDP  or other, with a strong understanding of their unique challenges.
  • Proficiency in modern build tools and compilers, including LLVM, Emscripten toolchains, GN, and Bazel, along with experience in cloud platforms and monitoring tools like AWS, Kubernetes, Kibana, Grafana, or Mimir.
  • Bonus: Active contributor to the Chromium open-source project or similar large-scale open-source initiatives.

#LI-MM8

#LI-REMOTE

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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