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Remote, but you must be in the following location

  • 🇬🇧 United Kingdom

Senior Full Stack Developer

About Zscaler

Zscaler (NASDAQ: ZS) accelerates digital transformation so that customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange is the company’s cloud-native platform that protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location.

With more than 10 years of experience developing, operating, and scaling the cloud, Zscaler serves thousands of enterprise customers around the world, including 450 of the Forbes Global 2000 organizations. In addition to protecting customers from damaging threats, such as ransomware and data exfiltration, it helps them slash costs, reduce complexity, and improve the user experience by eliminating stacks of latency-creating gateway appliances.

Zscaler 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. Zscaler’s purpose-built security platform puts a company’s defenses and controls where the connections occur—the internet—so that every connection is fast and secure, no matter how or where users connect or where their applications and workloads reside.

Senior Full Stack Developer - Threat Intelligence

Zscaler is looking for a highly skilled and motivated Senior Full Stack Developer to join our threat intelligence team. The senior full stack developer will play a key role in designing, implementing, and maintaining both frontend and backend systems. You will work closely with the malware reverse engineering team to build our platform that enhances Zscaler detections.


  • Architect and implement scalable, efficient, and maintainable full stack applications

  • Take ownership of projects from concept to deployment, ensuring they meet high standards for quality and performance

  • Identify and address performance bottlenecks, ensuring the overall efficiency and reliability of the applications.

  • Conduct code reviews to maintain code quality, performance, and adherence to coding standards


  • Required 5+ years in a Senior Full Stack Developer or similar role

  • Familiarity with version control systems, such as Git.

  • Proficient in scripting languages (e.g., Python, Bash, etc)

  • Strong understanding of frontend technologies, including HTML, CSS, and JavaScript

  • Experience with RESTful API design and development

  • A proven experience of using Django including extensive knowledge of its internals


  • Expert in relational database design, implementation, queries, and reporting (DDL, SQL)

  • Experience with building solutions for malware automation and detection

  • Familiar with networking, security, and cloud technologies (e.g., Azure, AWS or Google Cloud)

  • Data mining experience with large security data sets such as IDS, IPS and firewall logs


  • Bachelor’s or graduate degree from four-year college or university (preferably in Computer Science, Information Technology, Engineering, or a related discipline), or equivalent industry work experience.



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 proud to be an equal opportunity and affirmative action employer. We celebrate diversity and are committed to creating an inclusive environment for all of our employees. All qualified applicants will receive consideration 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 characteristics 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. For additional information about the federal requirements, click here .

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.