{"id":2047955,"url":"https://alion.io/job/costar-group-senior-edge-security-engineer","title":"Senior Edge Security Engineer","company":{"id":6056,"name":"CoStar Group","domain":"costargroup.com","url":"https://alion.io/company/costargroup","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":86,"open_postings":88,"ghost_share":0,"stale_share":0.557,"repost_share":0,"time_to_fill_p50_days":37,"computed_at":"2026-10-12T06:55:09Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Arlington, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":120000,"max":203000,"currency":"USD","period":"year","gross":null,"usd_annual":203000},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":true,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Akamai","optional":false},{"name":"AWS WAF","optional":false},{"name":"Cloudflare","optional":false},{"name":"Fastly","optional":false},{"name":"JavaScript","optional":false},{"name":"OpenSearch","optional":false},{"name":"OWASP","optional":false},{"name":"OWASP Top 10","optional":false},{"name":"Python","optional":false},{"name":"Ansible","optional":true},{"name":"ISO 27001","optional":true},{"name":"Machine Learning","optional":true},{"name":"PCI DSS","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-10-07T20:36:43Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-12T07:10:13Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Senior Edge Security EngineerJob Description\nOverview\nCoStar Group is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index, CoStar Group is on a mission to digitize the world’s real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives.\nWe have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We’ve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. This is how we deliver for our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.\nWe 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.\nThis 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.\nResponsibilities\nLead 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.\nDrive 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.\nAnalyze edge traffic patterns to detect anomalies and respond to security incidents.\nSupport secure deployment and scaling of edge security controls across cloud and CDN environments.\nProvide edge security across 50+ high traffic websites, spanning distinct web tech stacks and threat profiles.\nBasic Qualifications\nBachelor’s Degree required from an accredited, not for profit, in person university or college. \nA track record of commitment to prior employers.\n4+ 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.\nHands-on experience with WAF policy tuning, bot management, and rate limiting on a major CDN platform.\nFamiliarity with OWASP Top 10, API security best practices, and traffic analysis.\nAbility to collaborate across Product, Security, DevOps, Legal, and development teams.\nDemonstrated ability to author scripts or automation in Python, JavaScript, or similar languages.\nExperience with dashboards and log analysis tools such as Akamai WSA, OpenSearch, or Athena.\nStrong written and verbal communication skills with both technical and non-technical audience.\nPreferred Qualifications and Skills\nHands-on experience across the Akamai security suite, including Kona Site Defender, Bot Manager, Client Reputation, and Site Shield.\nExperience designing and tuning bot detection across multiple signal types, including device fingerprinting, behavioral analysis, residential proxy detection, and machine learning scoring models.\nFamiliarity with threat intelligence sources and using indicators (IPs, ASNs, fingerprints) to inform edge security policies.\nExperience leading or supporting security incidents at the edge, including DDoS mitigation, scraping events, or active exploitation of web applications.\nScripting and Infrastructure as code proficiency (Python, Terraform, Ansible, etc.) for automation and reporting.\nUnderstanding how edge security integrates with origin infrastructure across public and private clouds.\nFamiliarity with compliance frameworks (NIST, ISO 27001, PCI DSS).\nWhat’s in it for You\nWhen you join CoStar Group, you’ll experience a collaborative and innovative culture working alongside the best and brightest to empower our people and customers to succeed.\nWe offer you generous compensation and performance-based incentives. CoStar Group also invests in your professional and academic growth with internal training, and tuition reimbursement.\nOur benefits package includes (but is not limited to):\nComprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug\nLife, legal, and supplementary insurance\nVirtual and in person mental health counseling services for individuals and family\nCommuter and parking benefits\n401(K) retirement plan with matching contributions\nEmployee stock purchase plan\nPaid time off\nTuition reimbursement\nOn-site fitness center and/or reimbursed fitness center membership costs (location dependent)\nAccess to CoStar Group’s Employee Resource Groups\nComplimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks\nThe final salary or hourly rate offered for this role will fall within the range set forth below based on a variety of factors, including but not limited to, geographic location, skills, and competencies.\nBase Compensation: $120,000 - $203,000 Annually\nWe welcome all qualified candidates who are currently eligible to work full-time in the United States to apply. However, please note that CoStar Group is not able to provide visa sponsorship for this position.\nCoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing","description_format":"text","description_chars":5970,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Retirement plans"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"},{"name":"Virginia","iso":null,"kind":"city"},{"name":"California","iso":null,"kind":"city"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Real Estate","Commercial Real Estate"],"lifecycle":[{"event":"open","at":"2026-10-07T20:36:43Z"}],"visa":[],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":4,"expected_fill_days":37,"reasons":["conf:4","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-10-12T06:55:09Z"},"pay":{"stated_usd_annual":203000,"is_top_pay":true},"html_url":"https://alion.io/job/costar-group-senior-edge-security-engineer","json_url":"https://alion.io/job/costar-group-senior-edge-security-engineer.json","meta":{"generated_at":"2026-10-12T08:36:59Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":12908,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":6056},"rest":"https://alion.io/mcp/rest/get_company?id=6056"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcostar-group-senior-edge-security-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fcostar-group-senior-edge-security-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fcostar-group-senior-edge-security-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/costar-group-senior-edge-security-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcostar-group-senior-edge-security-engineer"}]}