Senior Red Team Operator

Location: Denmark, UK, Netherlands (remote options within Europe)Job Brief At CSIS, our Adversary Simulation & Offensive Research Team is seeking an experienced Red Team Operator to play a key role in developing our new Red Team function. In this position, you will deliver complex, long-term, threat intelligence-led red team campaigns that demand stealth, and tailored TTPs.If you are someone who enjoys deep technical work, hands-on-keyboard time, and wants a role where research and operations go hand in hand, this might be for you. At CSIS, R&D fuels how we evolve as a Red Team. Alongside real-world engagements, you’ll explore new techniques, build custom tools, and sharpen our offensive tradecraft.What You’ll DoExecute long-term red team operations where the primary goal is to simulate real-life threats and demonstrate tangible business risks.Dedicate R&D time to develop custom tooling, research novel techniques, and refine operational capabilities.Maintain a stealth-focused and methodical approach during complex engagements in enterprise environment.Collaborate with experts across CSIS and the Allurity group to exchange knowledge.Produce clear, actionable reports and communicate with both technical and executive stakeholder.About YouYou have minimum 2 years in a senior or principal red team role, with experience in intelligence-led operations, purple teaming, and regulatory testing (e.g. TIBER-EU, CBEST).Experience in offensive tooling development (C/C++, .NET, Python), malware development, and C2 framework customization.Solid understanding of endpoint detection, and OPSEC attitude.Hands-on experience in both traditional and cloud-native enterprise environments.A collaborative mindset focused on shared learning and success.Legal right to work in the EU orUK.Although not a requirement, certifications such as OSEP, OSCE, OSEE, CRTO, CCSAS, etc. or public contributions (tools, blogs, conference talks) are highly valuable.What We OfferA competitive compensation package, including performance-based bonus.25 days of paid vacation annually.Flexible hybrid or remote work setup within Europe.A diverse and inclusive culture of international cybersecurity experts across Denmark, the UK, Romania, Sweden, and the Netherlands.A collaborative and knowledge-sharing environment, with cross-discipline exposure to detection, DFIR, and threat intelligence and research.About usCSIS Security Group is a market-leading cybersecurity company built by and for technical experts. Our mission is to protect organizations from advanced cyber threats through cutting-edge research, intelligence, and technical expertise.Our services span Managed Detection & Response (MDR), Incident Response, Threat Intelligence, and Research, giving our Red Team direct access to deep insights that strengthen our operational quality and technical depth.As part of Allurity a European powerhouse of tech-enabled cybersecurity providers, we collaborate closely with sister companies across Europe. Through our Red Team Tribe, we share expertise, tools, and ideas to continuously advance our offensive capabilities and deliver exceptional results for our clients.Apply now Submit your CV through our career pageApplication deadline: we receive ongoing applicationExpected start date: January 1 or soon thereafter