Senior Cyber Security Analyst

Sigma Software

1d

About The Position

As a Senior Cyber Security Analyst, you will join a team focused on identifying, investigating, and mitigating malicious web activity across large-scale digital environments. The role combines threat analysis, traffic investigation, detection engineering, and collaboration with customers and internal engineering teams to improve protection mechanisms and threat visibility. You will work with high-volume traffic datasets, analyze suspicious behavior patterns, and contribute to the continuous improvement of security detections related to bots, fraud attempts, and other web-based threats.

The client delivers cybersecurity solutions to protect organizations, users, and digital ecosystems from evolving online threats. It specializes in bot defense and anti-malvertising technologies for the AdTech industry, supporting SSPs, DSPs, agencies, and publishers through scalable protection platforms, customizable reporting tools, and API integrations.

The project focuses on real-time threat detection and bot mitigation for enterprise-scale clients. Analysts collaborate directly with customers, using advanced analytics platforms to identify malicious traffic patterns and neutralize online threats. The environment requires technical expertise and strong communication skills.

Requirements

• 3–5 years of experience in incident response roles such as 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 Haves

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

Responsibilities

• Monitor and investigate potential security threats using tools such as Kibana/OpenSearch and Snowflake.
• Analyze security logs and investigate suspicious or unusual activity, including traffic spikes, 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 ensure they continue to work as expected, and identify 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, providing technical details to support remediation and improvements to detection and protection mechanisms.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior