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# Senior Edge Security Engineer

- **Company:** CoStar Realty Information Inc.
- **Location:** Arlington, VA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $120,000.0 - $203,000.0
- **Contract:** Permanent contract
- **Skills:** Kona Site Defender, JavaScript (Programming Language), Amazon Web Services, DDoS Mitigation, DevOps, Python (Programming Language), Network Security, Log Analysis, Machine Learning, Open Web Application Security, PCI Data Security Standards, Ansible, Akamai, Web Application Security, Traffic Analysis, Web Applications, Scripting, System Availability, Software Security, Rate Limiting, Cloudflare, Terraform, Ddos, Virtual Private Clouds, OpenSearch
- **Published:** October 6, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3426312201&tx=JP10801LFU&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* Bachelor's Degree required from an accredited, not for profit, in person university or college.
 * A track record of commitment to prior employers.
 * 4+ years of experience in edge security, web application security, or managing CDN security platforms such as Akamai, Cloudflare, Imperva, DataDome, Fastly, AWS WAF, or similar technologies for high-traffic web properties. Equivalent depth in another security domain with significant CDN exposure is also considered.
 * Hands-on experience with WAF policy tuning, bot management, and rate limiting on a major CDN platform.
 * Familiarity with OWASP Top 10, API security best practices, and traffic analysis.
 * Ability to collaborate across Product, Security, DevOps, Legal, and development teams.
 * Demonstrated ability to author scripts or automation in Python, JavaScript, or similar languages.
 * Experience with dashboards and log analysis tools such as Akamai WSA, OpenSearch, or Athena.
 * Strong written and verbal communication skills with both technical and non-technical audience.

Preferred Qualifications and Skills

 * Hands-on experience across the Akamai security suite, including Kona Site Defender, Bot Manager, Client Reputation, and Site Shield.
 * Experience designing and tuning bot detection across multiple signal types, including device fingerprinting, behavioral analysis, residential proxy detection, and machine learning scoring models.
 * Familiarity with threat intelligence sources and using indicators (IPs, ASNs, fingerprints) to inform edge security policies.
 * Experience leading or supporting security incidents at the edge, including DDoS mitigation, scraping events, or active exploitation of web applications.
 * Scripting and Infrastructure as code proficiency (Python, Terraform, Ansible, etc.) for automation and reporting.
 * Understanding how edge security integrates with origin infrastructure across public and private clouds.
 * Familiarity with compliance frameworks (NIST, ISO 27001, PCI DSS).

## Description

We are seeking a skilled Edge Security Engineer to join our Product Security team. This role focuses on maintaining and optimizing edge security controls across CoStar's public-facing websites. You will be responsible for managing Akamai Kona WAF configurations, bot mitigation strategies, scraping protections, and other perimeter defenses to ensure high availability and secure access to our platforms.

This position can be located in Arlington VA, Richmond VA, or Irvine CA and is in office Monday through Thursday and work from home on Friday.

Responsibilities

 * Lead CDN Security strategy and operations across CoStar's 50+ high-traffic web properties, including Akamai Kona policy design, tuning to minimize false positives, and protection against OWASP, DDoS, and emerging threat patterns.
 * Drive bot management and anti-scraping across the portfolio. This means policy design, score tuning, and digging into how scrapers are actually getting through, including residential proxy abuse and low-and-slow patterns.
 * Analyze edge traffic patterns to detect anomalies and respond to security incidents.
 * Support secure deployment and scaling of edge security controls across cloud and CDN environments.
 * Provide edge security across 50+ high traffic websites, spanning distinct web tech stacks and threat profiles.