Senior MS Security Specialist

Promise Group is a leading Microsoft partner in CEE region, offering a wide range of products and services for clients from various economic sectors, including finance, telecommunications, media, energy, manufacturing, trade, services, public administration, education, and healthcare. The company has been operating since 1991 and, since 1996, has been the largest provider of Microsoft solutions in Poland. Promise Group specializes in software licensing optimization, IT systems design, implementation, maintenance, and business application development. 

 

We are currently seeking talented individuals to join our team in the role of Senior MS Security Specialist (Defender for Endpoint)!

Key Responsibilities:

  • Implementing, configuring, and maintaining Microsoft Defender for Endpoint and other Defender Suite solutions across multiple environments
  • Developing and fine-tune security policies and detection rules
  • Troubleshooting and resolving operational issues with Microsoft Defender solutions to ensure optimal functionality and performance
  • Reducing risk through proactive measures (threat hunting, system hardening)
  • Analyzing threat trends and recommending security improvements
  • Creating and updating technical documentation
  • Participating in presales activities
  • Providing expert support and delivering training sessions for clients
  • Staying up to date with emerging cybersecurity threats and evolving Microsoft Defender capabilities

 

Our Requirements:

  • Over 4 years of experience in cybersecurity, with a focus on Microsoft security technologies
  • Strong hands-on experience with Defender for Endpoint, Defender for Identity, Defender for Cloud Apps
  • Proven expertise in deploying, administering and supporting Endpoint Detection and Response (EDR), Extended Detection and Response (XDR) solutions
  • Strong understanding of threat detection, incident response, and endpoint protection
  • Experience with endpoint security, server security, or threat analytics
  • Experience leveraging Intune and Entra ID to support Defender for Endpoint rollout and endpoint security management
  • Experience supporting large and complex enterprise environments with 1000+ users
  • Strong problem solving skills and the ability to communicate security concepts to both technical and non-technical audiences
  • Certificates:  SC-200, nice to have: SC-100, MD-102, MS-500
  • Readiness to conduct webinars and training
  • English language skills at least at B2 level
  • Excellent proficiency in Polish, both written and spoken
  • Higher education in a technical field
  • Nice to have: experience with SIEM tools (e.g., Microsoft Sentinel) 

We Offer:

  • Opportunities for professional development (participation in training, conferences, mentoring, shadowing are just some of the tools that support our people’s growth) 
  • Work with the largest Microsoft partner in Poland 
  • Stable employment in a company that has been in the market for over 30 years 
  • Hybrid or remote work model 
  • Non-corporate environment with focus on high level of collaboration among teams and team members
  • Focus on integration – we meet for joint trips, picnics, play board games at work, and organize group outings 
  • Benefits package – Multisport card, private medical care, life insurance, subsidies for English classes. Plus, fresh fruit every Wednesday and ice cream treats on Thursdays during the summer months!

Our Values:

Promise Group is dedicated to collaboratively enhancing technological competencies and inspiring individuals and organizations to achieve their full potential. Our culture is built on open communication, mutual respect, responsibility, trust, and commitment. We prioritize transparent dialogue and active listening, value diverse perspectives, and maintain healthy relationships by addressing concerns constructively. We take responsibility for our actions, keeping our promises and learning from mistakes. Trust is fundamental; we avoid superficial judgments and build strong connections. Our commitment to continuous improvement drives us to hone our skills, tackle new challenges, and pursue innovative initiatives, ensuring we make a positive impact on our clients, employees, and the broader community. 

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Warszawa
ID: 113 job_post.published_on: 10/02/2026
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