# Senior Security Engineer at CoStar Group

- Company: CoStar Group
- Company website: https://www.costargroup.com
- Type: Startups
- Level: Senior
- Location: US-VA Arlington
- Work setup: On-site
- Posted: 2026-10-29
- Apply by: 2026-12-13
- Apply: https://costar.wd1.myworkdayjobs.com/en-US/CoStarCareers/job/US-VA-Arlington/Sr-Security-Engineer_R38988?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/costar-group-senior-security-engineer/

## About the role

This role expands upon traditional network security engineering to include SaaS security governance and AI security risk management, supporting both human and machine-driven workflows. The ideal candidate brings deep technical capability, strong security judgment, and the ability to communicate security concepts effectively to both technical and non-technical audiences across the enterprise. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Provide engineering expertise to ensure enterprise network changes are designed and implemented securely (on-prem and cloud)
- Audit existing network designs and infrastructure configurations and recommend improvements to security posture
- Evaluate firewall change requests across on-premise and cloud environments
- Design, enforce, and audit policies for Next Generation Firewalls (NGFW), load balancers, routers, switches, and wireless infrastructure
- Manage Secure Service Edge (SSE) platform
- Partner with application owners and third-party risk teams to review SaaS security architecture and control effectiveness


Source: 1752vc Careers, https://www.1752.vc/careers/jobs/costar-group-senior-security-engineer/