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GeoEdge

Security Researcher – Web Threats

GeoEdge

. Hunt for and investigate new malvertising campaigns, scams and evasion techniques across the ad supply chain .

Posted 11/5/2026full-timeTel Aviv • IsraelMid-LevelSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in threat research and malware analysis, with strong capabilities in JavaScript deobfuscation and automation using Python. Proficient in writing technical reports and collaborating with cross-functional teams to enhance security measures.

Highest-signal resume keywords
Threat ResearchMalware AnalysisJavaScript DeobfuscationPython ScriptingWeb Security Knowledge

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Threat ResearchMalware AnalysisJavaScriptPythonDetection EngineeringData AnalysisAutomationEvasion TechniquesTechnical WritingAdTech
Soft Skills
CollaborationClear Communication
Tools & Technologies
Browser Dev ToolsProxiesSandboxesLLMsAI Agents
Industry Keywords
MalvertisingDigital AdvertisingCybersecurityTechnical Intelligence

Tech Stack

Tools & technologies
Cyber SecurityJavaScriptPython

About the role

Key responsibilities & impact
  • Hunt for and investigate new malvertising campaigns, scams and evasion techniques across the ad supply chain
  • Reverse-engineer malicious ad creatives, JavaScript and landing pages to understand targeting and detection evasion
  • Turn research findings into detection logic, signatures and data signals with R&D and Data Science, and ship them to production
  • Build tools and automation, including LLM- and agent-based workflows, to accelerate research and threat hunting
  • Track attacker infrastructure and campaigns over time, and measure detection precision and coverage
  • Write threat reports and blog posts, and help present GeoEdge research externally
  • Support Customer Success escalations through technical analysis of specific incidents
  • Collaborate with a small, hands-on security research team, R&D and Data Science

Requirements

What you’ll need
  • Hands-on experience in threat research, malware analysis or detection engineering, with examples of attacks investigated end to end
  • Strong web security knowledge: JavaScript, browsers, DOM, HTTP/HTTPS and redirect chains
  • Ability to read and deobfuscate malicious JavaScript and analyze it with browser dev tools, proxies and sandboxes
  • Scripting skills in Python (or similar) to automate analysis and work with large datasets
  • Understanding of attacker evasion techniques, including cloaking, fingerprinting and obfuscation
  • Clear written English sufficient to write threat reports for customers and technical write-ups for engineers
  • Bonus: Experience using LLMs or AI agents to solve real security problems
  • Bonus: Experience in AdTech, digital advertising or malvertising research
  • Bonus: Public research such as publications, CVEs, blog posts or conference talks
  • Bonus: Background in a cybersecurity product company or technological intelligence unit

Benefits

Comp & perks
  • No explicit benefits or compensation extras stated