Senior Software Development Engineer-Network, Security, LLM (AI Security)

About the role

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.

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 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.

Responsibilities

• Develop high-performance networking code for multiple desktop platforms using the Rust language and platform-native APIs
• Improve code quality through building solid, testable, and well-documented software foundations
• Design and implement major development projects with a focus on scalability, security, and performance
• Collaborate with product managers and cross-functional teams to deliver customer-impacting features
• Debug and solve complex network-related problems and enhance system functionality

Requirements

• Demonstrated curiosity and active exploration of AI tools, with a proven history of integrating new technologies to enhance daily workflows and augment problem-solving
• Bachelor’s degree in computer science, engineering, or a related field
• 3+ years of software engineering experience with deep expertise in the Rust programming language and familiarity with lower-level languages such as C/C++
• Strong knowledge of system and network programming including firewalls, VPNs, protocols, TCP/IP, UDP, DNS, QUIC, H/3, and proxies
• Familiarity with system concepts such as virtual memory, multi-threading, system APIs, SLM/LLM models, and excellent debugging and problem-solving skills in both networking and system-level contexts

Qualifications

• Deep understanding of AI security frameworks, threat modeling for large language models, and mitigating vulnerabilities unique to AI-driven architectures
• Familiarity with DevOps pipelines, VPN technologies, and a strong understanding of security protocols and standards
• Experience writing testable, low-complexity code with dependency injection, proficiency in Swift or Python, and direct experience validating AI-driven products using MLOps principles

Skills

You thrive in ambiguity by comfortably building the path as you walk it, viewing a dynamic environment as raw material to create meaningful outcomes. You act like an owner with a deep passion for the mission and a strong bias for action, seamlessly navigating between high-level strategy and hands-on execution. You are a natural problem-solver who is energized by complex challenges and laser-focused on delivering high-impact solutions. You are a high-trust collaborator who is ambitious for the team's success, actively embracing a culture of candor, respect, and continuous feedback. You are a lifelong learner with a growth mindset, constantly developing your skills and seeking purpose in everything you do.

Benefits

Zscaler’s 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:

• Variety of health plans
• Time off plans for vacation and sick time
• Parental leave options
• Retailment options
• Education reimbursement
• In-office perks, and more!

Learn more about Zscaler's hybrid working model and benefits here.

Pay

Zscaler’s salary ranges are benchmarked and are determined by role and level. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training. The base salary range listed for this full-time position excludes commission/ bonus/ equity (if applicable) + benefits. Base Pay Range $132,000—$165,000 USD