Senior Data Scientist

Who you are

• Bachelor’s degree in Data Science, Computer Science, Mathematics, or another quantitative discipline, or equivalent practical experience
• 7+ years of professional experience in data science, including developing and evaluating machine learning models for real-world use cases, defining meaningful success metrics, and conducting rigorous offline and online evaluations
• Strong foundation in statistics, experimental design, machine learning, and model evaluation
• Experience working with incomplete, noisy, or highly imbalanced data; performing detailed error analysis; and identifying the causes of false positives and false negatives
• Strong proficiency in Python and SQL, experience with common data science and machine learning libraries, and the ability to write maintainable, tested, and reviewable code
• Experience collaborating with software engineers to integrate data science methods into production systems
• Strong problem-solving skills, intellectual curiosity, and a track record of independently owning complex technical work
• Excellent written and verbal communication skills, including the ability to explain technical findings, uncertainty, and tradeoffs to varied audiences
• Master’s degree or Ph.D. in Data Science, Computer Science, Mathematics, or another quantitative discipline
• Experience applying data science or machine learning to cybersecurity, fraud detection, abuse detection, anomaly detection, or another adversarial domain
• Familiarity with Network Detection and Response, network protocols, threat detection, or incident investigation
• Experience with time-series analysis, anomaly detection, actuarial modeling, clustering, graph analytics, or unsupervised and semi-supervised learning
• Experience evaluating models in domains where positive examples are rare, labels are incomplete, and the underlying behavior changes over time
• Experience with generative AI, large language models, agentic systems, or other emerging AI techniques
• Familiarity with cloud platforms such as AWS or GCP

What the job involves

• Analyze large-scale network telemetry to identify behavioral patterns, anomalies, and signals associated with malicious activity
• Design, develop, and refine machine learning and AI-based methods that support ExtraHop’s products
• Develop evaluation methods appropriate for cybersecurity data, including highly imbalanced datasets, incomplete labels, rare events, and changing attacker and network behavior
• Conduct exploratory data analysis, feature engineering, model development, and error analysis using complex, high-volume datasets
• Research emerging machine learning and AI techniques, relevant cybersecurity developments, and assess their applicability to ExtraHop’s products
• Establish metrics and monitoring strategies for measuring model and detector performance over time
• Communicate findings, limitations, tradeoffs, and recommendations clearly to technical stakeholders and product leaders
• Provide technical leadership and mentorship to other data scientists through code reviews, design discussions, technical strategy, and contributions to the team’s analytical and engineering standards
• Document methodologies, experiments, model behavior, and evaluation results
• Write clean, maintainable, and well-tested production-quality code

Benefits

• Flexible Time Off | PTO policies that trust you to manage your time and recharge when you need it most
• Remote & Hybrid Work Options | Work where you work best. We support remote, hybrid, and in-office arrangements based on your role and preference
• Paid Company Holidays | Enjoy time with family and friends during major holidays
• Voluntary Time Off | 3 community service days each year to give back to causes you care about
• Global Collaboration | Work with teammates around the globe. Bring your perspective to a truly international team
• Team Events & Offsites | Regular team gatherings, department offsites, and company-wide celebrations to build connections
• Comprehensive Medical Coverage | Health and Wellness benefits to fit your needs
• Wellness Program | Access to Employee Assistance Programs (EAP), gym membership discounts, and resources to support your physical and mental well-being
• Life & Disability Insurance | Company-provided life insurance and disability coverage to protect you and your loved ones
• Commuter Benefits | Commuter benefits to make your journey to a local office easier
• Competitive Compensation | Market-rate salaries benchmarked against data to ensure you’re paid fairly for your expertise and impact
• Competitive Compensation | Market-rate salaries benchmarked against data to ensure you’re paid fairly for your expertise and impact
• Performance Incentives | Bonus or commission opportunities based on role and performance
• Employee Referral Program | Generous referral bonuses when you help us find great talent; your network matters
• Financial Planning Resources | Access to financial wellness programs and planning tools to help you make informed decisions about your future
• Parental Leave | Generous paid parental leave for new parents, because welcoming a new family member is a life-changing moment
• Family Medical Leave | Extended leave options for family caregiving, medical situations, and life transitions
• Family-Inclusive Benefits | Healthcare coverage that extends to domestic partners, spouses, and dependents
• Professional Development Budget or Tuition Reimbursement | Financial support for continuing education, certifications, and degree programs relevant to your career. Annual budget for conferences, courses, workshops, and learning resources
• Internal Mobility | Career growth happens in multiple directions — move up, across functions, or to new locations as opportunities arise
• Mentorship | Connect with experienced leaders across the organization who can guide your career development
• Craft beer on tap for celebrations and team gatherings
• Fully stocked kitchen with snacks and beverages
• Collaboration spaces designed for both focused work and team brainstorming
• Cafe for vibing, gaming, and recharging between meetings
• Walking distance to restaurants, shops, and the waterfront