Sr. AI Threat Researcher

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. Software Developer to join our team. This is a Hybrid role, reporting to the Leader in the Tools & Technology Team in the ThreatLabz department. The Sr. Software Developer will be primarily responsible for designing, building, and maintaining client-side and server-side web applications, taking ownership of end-to-end feature modules and ensuring seamless communication between user-facing interfaces and backend infrastructure. Working within ThreatLabz, the world-class security research arm of Zscaler, this role contributes directly to hunting new threats and protecting millions of global users. What you’ll do (Role Expectations) * Build and scale server-side web applications, secure RESTful APIs, and microservices using Node.js, Python, Django, or Flask * Manage core application security settings, user authentication, authorization protocols, and data protection measures * Map and optimize database schemas using relational systems like PostgreSQL or MySQL and NoSQL engines like MongoDB * Build responsive, high-performance user interfaces and reusable frontend modules utilizing HTML5, CSS3, JavaScript/TypeScript, and modern frameworks * Collaborate closely with the ThreatLabz Cyber Threat Research organization to conduct code reviews, perform unit testing, and maintain software applications 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) * Demonstrated curiosity and active exploration of AI tools, with a proven history of integrating new technologies like frontier LLMs and vibe coding into workflows to augment problem-solving * A minimum of 2-3 years of professional application development experience with proficiency in Python and backend frameworks including Django and Flask * Strong understanding of database systems like PostgreSQL and MongoDB, alongside hands-on experience with Object Relational Mapper libraries * Expertise in frontend development with HTML5, CSS3, JavaScript, jQuery, and AngularJS * In-depth knowledge of the ELK Stack, including cluster setup, Logstash configuration, Kibana visualizations, Elastic beats, and core Elasticsearch concepts What Will Make You Stand Out (Preferred Qualifications) * Competency in Python-based data science tools such as pandas and NumPy, and experience implementing machine learning algorithms to optimize security solutions * Experience in Agile methodologies and version control tools such as GitHub, GitLab, or SVN * Familiarity with cloud services offered by major providers like AWS, Azure, or GCP #LI-Hybrid #LI-PM5 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.

Pinterest

About Pinterest: Millions of people around the world come to our platform to find creative ideas, dream about new possibilities and plan for memories that will last a lifetime. At Pinterest, we’re on a mission to bring everyone the inspiration to create a life they love, and that starts with the people behind the product. Discover a career where you ignite innovation for millions, transform passion into growth opportunities, celebrate each other’s unique experiences and embrace the flexibility to do your best work. Creating a career you love? It’s Possible. At Pinterest, AI isn't just a feature, it's a powerful partner that augments our creativity and amplifies our impact, and we’re looking for candidates who are excited to be a part of that. To get a complete picture of your experience and abilities, we’ll explore your foundational skills and how you collaborate with AI. Through our interview process, what matters most is that you can always explain your approach, showing us not just what you know, but how you think. You can read more about our AI interview philosophy and how we use AI in our recruiting process here. Pinterest’s Security team is seeking an experienced Security Software Engineer to help keep our 619 million monthly active users safe from real-world threats. You will build tooling, product enhancements, and work with teams to improve our overall security posture and enhance our secure development lifecycle. We are looking for a candidate with a passion for security and innovation, who will research and develop new solutions to secure our products. What you'll do: * Design and build out our rules, processes, and platform for our secure development lifecycle. * Deliver and review code that is well-documented, tested, and operable. * Work cross function to architect scalable and secure solutions to a variety of Pinterest’s problems. * Conduct regular security assessments including design reviews. * Help rework our existing controls to address increased productivity due to AI and new AI threats. What we’re looking for: * Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent experience. * 5+ years of experience in product security, application security, or security related software engineering role. * Enthusiasm for the constant fight to ensure security and privacy. * Proficiency in a dynamic programming language such as Python. In-Office Requirement Statement:  * We recognize that the ideal environment for work is situational and may differ across departments. What this looks like day-to-day can vary based on the needs of each organization or role. * This role will need to be in the office for in-person collaboration 1-2 times every 6-months and therefore can be situated anywhere in the country.  Relocation Statement: * This position is not eligible for relocation assistance. Visit our PinFlex page to learn more about our working model.   #LI-REMOTE #LI-JT1 At Pinterest we believe the workplace should be equitable, inclusive, and inspiring for every employee. In an effort to provide greater transparency, we are sharing the base salary range for this position. The position is also eligible for equity. Final salary is based on a number of factors including location, travel, relevant prior experience, or particular skills and expertise. Information regarding the culture at Pinterest and benefits available for this position can be found here. US based applicants only $155,584—$320,320 USD Our Commitment to Inclusion: Pinterest is an equal opportunity employer and makes employment decisions on the basis of merit. We want to have the best qualified people in every job. All qualified applicants will receive consideration for employment without regard to race, color, ancestry, national origin, religion or religious creed, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, age, marital status, status as a protected veteran, physical or mental disability, medical condition, genetic information or characteristics (or those of a family member) or any other consideration made unlawful by applicable federal, state or local laws. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. If you require a medical or religious accommodation during the job application process, please complete this form for support.   By submitting this application, I certify that all information submitted in my application and throughout the hiring process is true, accurate, and complete to the best of my knowledge. I understand that any false statement, omission, or misrepresentation may disqualify me from employment consideration or result in termination if discovered after hire.

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 Machine Learning Engineer to join our Exposure Management & Security Operations team. This role is a hybrid position based in Bangalore, reporting to the Sr. Manager, Engineering Strategy, Planning & Analytics. You will join the team that built the world’s largest cloud security platform from the ground up, helping to scale a multitenant architecture that serves over 15 million users globally. Your vision and passion will be critical as we continue to innovate and enable organizations to harness the speed and agility of a cloud-first strategy. What you’ll do (Role Expectations) * Designing and deploying scalable, reliable, and efficient production-grade Gen AI/ML systems from data ingestion to monitoring * Driving innovation by researching and evaluating emerging AI/ML frameworks, rapidly prototyping novel solutions, and championing full-scale implementation * Implementing and maintaining robust MLOps practices, including logging, monitoring, and CI/CD pipelines for distributed ML systems * Leading and mentoring junior engineers in system design best practices and promoting technical excellence * Collaborating with cross-functional teams to translate complex business needs into technical solutions Who You Are (Success Profile) * You thrive in ambiguity and are comfortable building the path as you walk it, seeing dynamic environments as the raw material to build something meaningful. * You act like an owner with a passion for the mission and a bias for action, navigating seamlessly between high-level strategy and hands-on execution. * You are a problem-solver who seeks out challenges because you are energized by finding solutions that deliver the biggest impact. * You are a learner with a growth mindset, actively seeking feedback to become a better partner and a stronger teammate. * You are driven by innovation and have a deep curiosity for how things work, believing in the power of technology to accelerate transformation. What We’re Looking for (Minimum Qualifications) * At least 5 years of experience as a Machine Learning Engineer with a track record of shipping complex, scalable ML systems to production * Proven experience building Gen AI/ML systems with LLMs, fine-tuning, Retrieval-Augmented Generation (RAG), and Agentic AI in production environments * Experience designing and implementing distributed ML systems with deep knowledge of MLOps, including monitoring and logging * Strong computer science foundation in data structures, algorithms, and system design with expertise in Python and SQL * Excellent communication and interpersonal skills to partner effectively across global engineering teams What Will Make You Stand Out (Preferred Qualifications) * Expertise with cloud services such as AWS, GCP, or Azure and ML platforms like Kubeflow or SageMaker * Proficiency in systems programming languages like Go or Rust with an understanding of distributed systems and networking fundamentals * A record of research, publications, or patents in AI/ML #LI-Hybrid #LI-GL2 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.