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Senior Threat Researcher

Lisbon, PortugalLisbonPortugalEuropeDecember 2, 2025

As a threat researcher you will work as part of the security research team to help monitor the activity of malware affecting people and organizations around the world. You will research how threats target systems, help build and maintain our sensor and honeypot infrastructure, and derive novel mechanisms to infer infections and trends in the threat landscape from our sensor networks. The product of your work will be the maintenance and constant improvement of the world’s largest malware infections tracking system. This is one of the biggest differentiators of BitSight, as its volume, accuracy and data quality allow for a unique capability when measuring security ratings.

We are looking for candidates who are able to research a threat with minimal supervision, build and maintain a distributed sensor and honeypot infrastructure, have an engineering or research background in information security, and have interest in solving technical challenges.

Key Responsibilities

  • Keep up with the current and past threat landscape to infer detection patterns from sensor and honeypot data;
  • Create malware traffic detection signatures based on network communication patterns;
  • Carefully document decisions and observations made during development, and keep an updated documental support of the process being performed;
  • Design, deploy, and manage sensor and honeypot infrastructure;
  • Help internal support by providing insightful knowledge in the systems you create.

Skills and Requirements

  • BSc or MSc is desirable or equivalent professional experience;
  • Take tasks and projects to completion, with a sense of ownership;
  • Able to document deep technical research into easily readable documentation;
  • Strong sense of team collaboration as well as individual work ethic;
  • Experience with public cloud platforms such as AWS and GCP;
  • Experience with container technologies such as Docker;
  • 3+ years of experience in Security Engineering or Security Research position;

What we offer

  • Great company - BitSight pioneered the market and the Security Rating is becoming increasingly important worldwide as the standard,
  • Good work environment and perks;

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