ExtraHop · 5 months ago
Software Engineer III | Performance & Sustaining
Seattle, WA
Full-time
Hybrid
Mid, Senior Level
$120K/yr - $145K/yr
5+ years expExtraHop is a cybersecurity partner focused on providing visibility and real-time threat detection through its network detection and response technology. The Software Engineer III in Performance and Tools will be responsible for driving product performance and scalability, supporting automation of performance tests, and collaborating with development teams to enhance the user experience in demanding environments.
AnalyticsCyber SecurityEnterprise SoftwareIT ManagementNetwork Security
Responsibilities
Support product performance and scalability by utilizing existing tools and managing network infrastructure to determine and push the limits
Participate in testing scenarios that reflect real-world customer environments
Monitor usage parameters using production telemetry
Assist in identifying performance bottlenecks and contribute to improvements in efficiency and scalability
Support the automation of routine performance tests to quickly identify regressions
Collaborate with development teams to set up testing environments for new features and customer issue replication
Continuously develop technical knowledge and learn from senior engineers
Technical Curiosity - actively works with senior and principal engineers to continuously learn new skills and technologies
Assist in creating new packet captures to drive performance testing with different protocols and threat profiles
Qualification
Required
Minimum of 5 years of relevant experience that includes 2 years of Linux system engineering with substantial expertise in networking and databases, and at least 3 years in Linux scripting/programming (Python preferred)
Effective written and verbal communication skills
Ability to work collaboratively within the team and across functional areas
Work well under pressure - Work well in fast-paced, high-stress environments
Demonstrated reliability, consistent engagement and attendance
Preferred
TCP/IP networking and performance tuning
Linux OS systems management and performance tuning
Postgres database management and performance tuning
Programmatic REST API testing
Cloud/SaaS Experience (AWS/GCP/Azure) (preferably Terraform)
Virtualization platforms or containers (Docker, K8s)
Familiarity with test methodologies
Experience with Grafana/Prometheus a plus
Ability to learn from customer issues and proactively develop testing tools to prevent recurrence
Experience with learning from customer issues to develop new testing tools that prevent those issues from recurring
Benefits
Health, Dental, and Vision Benefits
Flexible PTO, Sick Time Prorated Based on Date of Hire, and All Federal Holidays (US Only) + 3 Days of Paid Volunteer Time
Non-Commissioned Positions may be eligible to participate in the Annual Discretionary Bonus Plan
FSA and Dependent Care Accounts + EAP, where applicable
Educational Reimbursement
401k with Employer Match or Pension where applicable
Pet Insurance (US Only)
Parental Leave (US Only)
Hybrid and Remote Work Model
Company
ExtraHop
We’re on a mission to reveal cyber risk and build business resilience by exposing the threats organizations can’t see.
501-1000 employees
H1B Sponsorship
ExtraHop has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (7)
2022 (2)
2021 (3)
2020 (9)
Funding
Current Stage
Late StageTotal Funding
$161.6MKey Investors
TCVMeritech Capital PartnersMadrona
2024-01-09Private Equity· $100M
2021-06-08Acquired
2014-05-29Series C· $41M
Leadership Team
Sharat Nautiyal
Senior Cybersecurity Architect and Tech Evangelist
Recent News
2025-11-04
2025-10-21
2025-10-04
Company data provided by crunchbase