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  1. David Walter
David Walter

David Walter

IT engineer @ Alstef Group

Open for Inquiries

You can message David to ask questions before booking their services

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About
Senior Infrastructure & Cybersecurity Architect with 15+ years of production experience. Former professional mentor for 4 years, focused on real-world systems, architecture decisions, and troubleshooting. I help engineers build, secure, and operate reliable infrastructures — pragmatically and without fluff.
Spoken Languages
English
French
Skills & Technologies
Linux
Cybersecurity
Cyber Security
Network Security
Intro Session
Free introductory call to discuss your background, challenges, and goals. The objective is to assess fit and define a clear mentoring direction before committing to a longer engagement.

    Free

    Book Now
    Hourly Session
    One-time technical consultation on infrastructure or security topics. Focused on analysis, reasoning, and decision-making in real environments. Not managed support or hands-on execution.
    • Mentoring Activities:
      • 1-on-1 Sessions

    $ 129/hour

    Book Now
    Mock Interview
    Mock technical interview for infrastructure, systems, and cybersecurity roles. Focus on architecture decisions, troubleshooting methodology, and production mindset. Includes structured feedback and improvement areas.

      $ 249/hour

      Book Now
      Regular
      Ongoing mentorship for IT professionals working with production systems. Focus on architecture, operations, security trade-offs, and incident reasoning to help you grow toward senior or lead roles.
      • Response Time: 72 hours
      • Calls: 2 × 30 min
      • Mentoring Activities:
        • 1-on-1 Sessions

      $ 179/month

      Start Mentorship Now