Principal Software Engineer, ZDX (Core Java/APIs)

Engineering Atlanta, Georgia


Position: Principal Software Engineer, ZDX (Core Java/APIs)

Location: Atlanta, GA

For over 10 years, Zscaler has been disrupting and transforming the security industry. Our 100% purpose built cloud platform delivers the entire gateway security stack as a service through 150 global data centers to securely connect users to their applications, regardless of device, location, or network in over 185 countries protecting over 4,500 companies and 100 Million threats detected a day.

We work in a fast paced, dynamic and make it happen culture. Our people are some of the brightest and passionate in the industry that thrive on being the first to solve problems.  We are always looking to hire highly passionate, collaborative and humble people that want to make a difference.  

In this role, you will have the opportunity to work on our ZDX product.  Zscaler Digital eXperience is an offering from Zscaler to measure and improve end users' digital experience. Purpose built with today's cloud applications in mind, it gives visibility into performance issues faced by users in accessing applications and helps triage problems faster. Join us to build a web scale user experience platform.

What you will do:

  • You will be responsible for product features related to data transformations, enrichment and analytics
  • You will discuss with product managers, UX designers and other backend teams to understand requirements and translate the same into functional specifications 
  • You will seize every opportunity to refactor code in the interests of  maintainability and reusability
  • Provide technical direction and mentorship to junior engineers and bring out the best in them


  • Minimum 12 years of software development experience
  • Experience in Core Java, Concurrency and Distributed Computing
  • Experience in building high performance, scalable web services
  • Experience using batch and stream processing frameworks like Spark/Kafka Streaming, Spring batch or equivalent
  • Experience developing micro services and API's
  • Proficiency with Tomcat installation and configuration.
  • Proficiency with Maven (preferred) or Gradle build and dependency management systems.
  • 5+ years experience writing unit test, stubs, mocks in a TDD environment using JUnit, REST Assured or TestNG
  • Experience with CI & CD systems such as Jenkins or Bamboo
  • Metrics driven development experience and experience using metrics systems like  Grafana, Prometheus, etc

Desired skills:

  • Ability to write code that can perform efficiently in a big data setup
  • Experience with big-data technologies like Spark, Redshift etc.
  • Strong knowledge of various DBMS systems including NoSQL architectures and design principles
  • Experience tuning JVM for optimal application performance
  • Successfully delivered software products from ideation through to implementation and support
  • Experience with any Graph Database like AWS Neptune, Neo4j, Spark Graphx etc.
  • Understanding of statistics and machine learning


  • BS Computer Science or Equivalent

Why Zscaler?

People who excel at Zscaler are smart, motivated and share our values. Ask yourself: Do you want to team with the best talent in the industry? Do you want to work on disruptive technology? Do you thrive in a fluid work environment? Do you appreciate a company culture that enables individual and group success and celebrates achievement? If you said yes, we’d love to talk to you about joining our award-winning team.

Learn more at or follow us on Twitter @zscaler. Additional information about Zscaler (NASDAQ : ZS ) is available at  All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, protected veteran status, or on the basis of disability.