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Sigma Software· Spotted 8h ago

Senior Cyber Security Analyst

Location
Remote, Warsaw, Masovian Voivodeship, pl
Work mode
Remote
Employment
Full-time
Level
Senior
Experience
3+ years
Education
Bachelor's degree
Job function
Software/Internet/AI › System Reliability & Security › Cyber Security Analyst

Posted Nov 11, 2026Last confirmed open Nov 11, 2026

About this role

  • Monitor and investigate potential security threats using tools such as Kibana/OpenSearch and Snowflake
  • Analyze security logs and investigate suspicious or unusual activity, including spikes in traffic, unexpected changes in attack patterns, and new or disappearing attack signals
  • Discover and document threats and attacks
  • Develop, tune, and deploy detection rules based on traffic behavior, HTTP request attributes, headers, device fingerprints, and other indicators to mitigate malicious activity
  • Monitor existing detections and known attack patterns to make sure they continue to work as expected and identify any unusual changes in volume, sources, IPs, domains, or other indicators
  • Support customer onboarding by analyzing web application traffic flows and configuring baseline detection and protection rules
  • Investigate customer-reported incidents and missed detections, analyze attack traffic, and implement mitigations to improve protection coverage
  • Communicate findings to Engineering and other stakeholders and provide the necessary technical details to support remediation and improvements to detection and protection mechanisms
  • 3-5 years of experience in Incident Response roles like Threat Research, Managed Detection and Response or Customer Security Operations
  • Bachelor’s degree in Computer Science, Cybersecurity, Information Security, or a related field
  • Strong understanding of web technologies and networking fundamentals, including HTTP/HTTPS, TCP/IP, DNS, authentication, cookies, and browser-server interactions
  • Experience with log analysis and investigation platforms such as Kibana/OpenSearch, Snowflake, Datadog, or similar tools
  • Strong SQL skills, including working with large datasets
  • Basic knowledge of JavaScript for web and client-side analysis
  • Strong analytical and problem-solving skills
  • Ability to work independently and manage investigations with minimal supervision
  • Strong communication and collaboration skills
  • Passion for cybersecurity and continuous learning

NICE TO HAVE:

  • Background in Cybersecurity / Threat Research / Threat Intelligence
  • Hands-on experience in web security research, bot management, fraud detection, or related security domains
  • History of tracking threat actors, their TTPs, indicators of compromise
  • Python and Jupyter Notebook experience for investigations and automation
  • Experience with GitHub and version control workflows

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