Sr Staff Software Development Engineer (API)

Zscaler

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile, efficient, resilient, and secure. As an AI-forward enterprise, we are constantly pushing the envelope, leveraging the world’s largest security data lake to power our cloud-native Zero Trust Exchange platform. This innovation protects our customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Here, impact in your role matters more than title and trust is built on results. We say, impact over activity. We seek innovators who actively use AI to amplify their impact and who thrive in an environment where we leverage intelligent systems to stay ahead of evolving threats. We believe in transparency and value constructive, honest debate—we’re focused on getting to the best ideas, faster. We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership, and accountability. We value high-impact, high-accountability with a sense of urgency where you’re enabled to do your best work and embrace your potential. If you’re driven by purpose, thrive on solving complex challenges, and want to be part of the team that’s helping to secure the AI age, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity.      Role We are looking for a Staff Software Engineer to join our team. This is a hybrid role based in Bangalore, reporting to the Sr. Director of Software Engineering in the platform convergence department. In this role, you will design and scale high-performance backend services to drive the evolution of our converged platform. You will collaborate across teams to build robust distributed systems while mentoring engineers to uphold technical excellence. What you’ll do (Role Expectations) * Designing and implementing scalable, high-performance backend services and APIs using Go, integrating with databases like PostgreSQL, MySQL, MongoDB, and Redis * Writing and maintaining unit, integration, and performance tests to ensure code quality while monitoring, debugging, and optimizing system performance * Mentoring junior engineers, fostering their growth and success, and actively participating in code reviews to uphold best practices * Collaborating with external teams to deliver integrated solutions and ensure seamless system functionality * Contributing to Agile/Scrum processes, including sprint planning and retrospectives, to drive project success Who You Are (Success Profile) * You thrive in ambiguity. You're comfortable building the path as you walk it. You thrive in a dynamic environment, seeing ambiguity not as a hindrance, but as the raw material to build something meaningful. * You act like an owner. Your passion for the mission fuels your bias for action. You operate with integrity because you genuinely care about the outcome. True ownership involves leveraging dynamic range: the ability to navigate seamlessly between high-level strategy and hands-on execution. * You are a problem-solver. You love running towards the challenges because you are laser-focused on finding the solution, knowing that solving the hard problems delivers the biggest impact. * You are a high-trust collaborator. You are ambitious for the team, not just yourself. You embrace our challenge culture by giving and receiving ongoing feedback—knowing that candor delivered with clarity and respect is the truest form of teamwork and the fastest way to earn trust. * You are a learner. You have a true growth mindset and are obsessed with your own development, actively seeking feedback to become a better partner and a stronger teammate. You love what you do and you do it with purpose. What We’re Looking for (Minimum Qualifications) * Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions to optimize outcomes within your functional domain * 5+ years of experience, with proficiency coding in Go (Golang), including strong expertise in concurrency, parallelism, GRPC, Protobuf, net/http, and TLS * Skilled in building large-scale distributed systems, RESTful API design, and working with web frameworks like Gin and Echo * Hands-on experience with Docker, Kubernetes, cloud platforms (AWS, GCP, Azure), and version control tools like Git * Solid understanding of SQL and NoSQL databases, CI/CD pipeline implementation, and exceptional problem-solving skills for designing robust solutions What Will Make You Stand Out (Preferred Qualifications) * Experience integrating LLM APIs, vector databases, or AI orchestration frameworks directly into high-performance Go microservices to optimize data-driven capabilities * Experience with systems languages like Rust or C/C++, particularly in performance-critical environments #LI-Hybrid #LI-RM6   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 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.

Zscaler

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile, efficient, resilient, and secure. As an AI-forward enterprise, we are constantly pushing the envelope, leveraging the world’s largest security data lake to power our cloud-native Zero Trust Exchange platform. This innovation protects our customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Here, impact in your role matters more than title and trust is built on results. We say, impact over activity. We seek innovators who actively use AI to amplify their impact and who thrive in an environment where we leverage intelligent systems to stay ahead of evolving threats. We believe in transparency and value constructive, honest debate—we’re focused on getting to the best ideas, faster. We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership, and accountability. We value high-impact, high-accountability with a sense of urgency where you’re enabled to do your best work and embrace your potential. If you’re driven by purpose, thrive on solving complex challenges, and want to be part of the team that’s helping to secure the AI age, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity.      Role We are looking for a Sr Staff Software Development Engineer to join our team. This is a hybrid role based in Bangalore role, reporting to the Sr. Director, Software Engineering in the Engineering department. You will be responsible for writing the frameworks and tools used to test our products, occupying a unique space that combines the "building" mindset of software design with the "breaking" mindset of software test engineering. In this role, you will design and develop wide-reaching tools and write code that automatically verifies product quality, often writing more code than the developers themselves. What you’ll do (Role Expectations) * Build robust frameworks and tools specifically designed to test complex products * Design and develop wide-reaching tools that impact the entire engineering lifecycle * Write high-quality code to automatically verify product quality and ensure seamless performance Who You Are (Success Profile) * You thrive in ambiguity. You're comfortable building the path as you walk it. You thrive in a dynamic environment, seeing ambiguity not as a hindrance, but as the raw material to build something meaningful. * You act like an owner. Your passion for the mission fuels your bias for action. You operate with integrity because you genuinely care about the outcome. True ownership involves leveraging dynamic range: the ability to navigate seamlessly between high-level strategy and hands-on execution. * You are a problem-solver. You love running towards the challenges because you are laser-focused on finding the solution, knowing that solving the hard problems delivers the biggest impact. * You are a high-trust collaborator. You are ambitious for the team, not just yourself. You embrace our challenge culture by giving and receiving ongoing feedback—knowing that candor delivered with clarity and respect is the truest form of teamwork and the fastest way to earn trust. * You are a learner. You have a true growth mindset and are obsessed with your own development, actively seeking feedback to become a better partner and a stronger teammate. You love what you do and you do it with purpose. What We’re Looking for (Minimum Qualifications) * Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions to optimize outcomes within your functional domain * 8+ years of experience working on systems or distributed systems with a focus on networking, firewall technologies, and cloud infrastructure * Hands-on proficiency in Python or Golang and a proven track record of building automated testing frameworks * Foundational knowledge of public cloud computing platforms such as AWS, GCP, or Azure * Experience with virtual environments including Docker, containers, Kubernetes, and OVA What Will Make You Stand Out (Preferred Qualifications) * Experience implementing AI-powered test generation, predictive defect modeling, or intelligent test automation frameworks to optimize engineering velocity * Deep understanding of TCP/IP protocol stack, HTTP, TLS, PKI, and related networking products like DNS, DHCP, VPN, and HA * Familiarity with security technologies such as firewalls, IPS, and Authentication alongside advanced expertise in software development lifecycles and high-level development automation #LI-RM6 #LI-Hybrid 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 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.

Zscaler

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile, efficient, resilient, and secure. As an AI-forward enterprise, we are constantly pushing the envelope, leveraging the world’s largest security data lake to power our cloud-native Zero Trust Exchange platform. This innovation protects our customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Here, impact in your role matters more than title and trust is built on results. We say, impact over activity. We seek innovators who actively use AI to amplify their impact and who thrive in an environment where we leverage intelligent systems to stay ahead of evolving threats. We believe in transparency and value constructive, honest debate—we’re focused on getting to the best ideas, faster. We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership, and accountability. We value high-impact, high-accountability with a sense of urgency where you’re enabled to do your best work and embrace your potential. If you’re driven by purpose, thrive on solving complex challenges, and want to be part of the team that’s helping to secure the AI age, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity.    Role We are looking for a Sr Staff Software Development Engineer (Datapath) to join our team. This is a hybrid role based in Bangalore, India, reporting to the Sr. Manager Development Engineering in the VSE Engineering department. We are looking for a software engineer to help add more features and functionality of our core systems. You will play a critical role in expanding the capabilities of our VSE datapath technology to drive the next level of product impact. What you’ll do (Role Expectations) * Define software design specifications and implement bug-free code using test-driven methodology * Identify opportunities to refactor existing code for maintainability and reusability while owning the resolution of complex customer issues * Collaborate closely with cross-functional engineering teams including security, UI, platform, analytics, and quality assurance * Partner with Product Management to drive detailed product requirements * Lead a group of junior engineers by providing technical guidance, mentoring, and assisting in development details Who You Are (Success Profile) * You thrive in ambiguity. You're comfortable building the path as you walk it. You thrive in a dynamic environment, seeing ambiguity not as a hindrance, but as the raw material to build something meaningful. * You act like an owner. Your passion for the mission fuels your bias for action. You operate with integrity because you genuinely care about the outcome. True ownership involves leveraging dynamic range: the ability to navigate seamlessly between high-level strategy and hands-on execution. * You are a problem-solver. You love running towards the challenges because you are laser-focused on finding the solution, knowing that solving the hard problems delivers the biggest impact. * You are a high-trust collaborator. You are ambitious for the team, not just yourself. You embrace our challenge culture by giving and receiving ongoing feedback—knowing that candor delivered with clarity and respect is the truest form of teamwork and the fastest way to earn trust. * You are a learner. You have a true growth mindset and are obsessed with your own development, actively seeking feedback to become a better partner and a stronger teammate. You love what you do and you do it with purpose. What We’re Looking for (Minimum Qualifications) * Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions to optimize outcomes within your functional domain * Extensive experience developing large-scale cloud networking and security applications, with expertise in software design and programming in C/C++, Go, or Python * Deep knowledge of networking protocols and services such as DNS, HTTP, TCP/IP, and SSL/TLS, ideally with an understanding of firewall policy enforcement * Proven experience working with AWS/Azure/GCP networking components, including transit gateway, IGW, NATGW, NACL, security groups, GWLB, ILB, and Route53 * Hands-on experience with AWS/Azure/GCP database services, PubSub mechanisms, and SDKs What Will Make You Stand Out (Preferred Qualifications) * Experience incorporating AI/ML models for intelligent traffic routing, real-time network anomaly detection, or predictive load balancing within high-throughput datapaths * Familiarity or direct experience with developing security Firewall features * Prior experience building solutions for SaaS platforms and leveraging cloud-native infrastructure or auto-scaling groups for dynamic workload traffic profiles #LI-Hybrid #LI-AN4 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 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.