Preparation for Alter Domus should be structured around demonstrating both high-level architectural thinking and granular technical proficiency. You should be able to articulate how your technical decisions align with business goals, such as data protection and operational efficiency.

Role-Related Knowledge – This is the core of your interview. You must demonstrate deep fluency in the Microsoft 365 stack and how its various components—Entra ID, Intune, and Exchange—interoperate within a global enterprise.

Problem-Solving Ability – Interviewers look for a systematic approach to troubleshooting. When presented with a scenario, clearly state your diagnostic steps, the tools you would use (e.g., header analysis, message trace), and how you validate your solution.

Communication & Documentation – As a senior member of the team, you will be expected to mentor others. Show that you can explain complex technical concepts to non-technical stakeholders and that you prioritize creating high-quality, reusable documentation.

The interview process at Alter Domus is rigorous and designed to assess your technical depth, your ability to function in a collaborative team, and your alignment with the company’s professional culture. You can expect a mix of technical screening, deep-dive architectural discussions, and behavioral assessments. The pace is generally professional and structured, reflecting the firm's focus on precision and reliability.

This timeline provides a high-level view of the progression from initial screening to final assessment. Use this to pace your preparation; ensure you have refreshed your knowledge on Microsoft best practices early in the process, while saving your behavioral stories for the later stages where team fit is heavily evaluated.

Microsoft 365 Administration & Security

This is the most critical evaluation area. You are expected to demonstrate mastery over the Microsoft ecosystem.

Be ready to go over:

• Hybrid configurations and mail flow troubleshooting.
• Identity Protection and MFA implementation.
• Data Loss Prevention (DLP) and threat protection strategies.

Advanced concepts:

• Automating lifecycle management via Graph API.
• Managing complex Defender configurations across global tenants.

Intune & Device Management

The firm relies on secure, compliant endpoints. Your ability to manage the device lifecycle is a key differentiator.

Be ready to go over:

• Autopilot and Autopatch deployment strategies.
• Creating and enforcing Security Baselines.
• Managing JAMF for Apple ecosystem integration (as a bonus skill).

Example scenarios:

• "A group of users is failing compliance checks; walk me through your troubleshooting steps."
• "How do you design a configuration profile for a remote, global workforce?"

As a Senior System Engineer, your primary objective is to maintain the integrity and performance of the Alter Domus global Microsoft 365 environment. You will spend a significant portion of your time managing the Defender XDR ecosystem and ensuring that security protocols (CIS standards) are strictly followed.

Beyond day-to-day administration, you will act as a technical lead, collaborating with cross-functional teams to integrate new workflows into the existing Microsoft 365 architecture. You will also oversee license management, ensuring that the firm’s procurement aligns with actual usage, and you will be a key resource for the Level 1 and Level 2 support teams, providing the training and documentation they need to handle standard requests effectively.

A competitive candidate for this role will balance technical rigor with a service-oriented mindset.

• Must-have skills: At least 6 years of IT experience, advanced proficiency in Microsoft 365 (Exchange, Intune, Entra ID), deep knowledge of PowerShell/Graph API, and a solid understanding of Active Directory and Group Policy.
• Nice-to-have skills: Experience with JAMF for managing the Apple ecosystem, and experience working in a global, multi-jurisdictional environment.
• Soft skills: Exceptional written and oral communication, ability to thrive in a project-based environment, and a strong commitment to service excellence.

Q: How technical are the interviews? A: They are highly technical. Expect to be asked specific questions about transport rules, header analysis, and security configuration logic.

Q: Is there a coding requirement? A: While not a software developer role, PowerShell and Graph API proficiency is essential. You will be tested on your ability to automate tasks.

Q: What is the culture like? A: Alter Domus values meritocracy and open communication. They look for professionals who are self-motivated and capable of working in a fast-paced, project-driven environment.

• Structure your answers: Use the STAR method (Situation, Task, Action, Result) for behavioral questions, especially when discussing past security incidents or projects.
• Focus on the "Why": Don't just explain how you did something; explain why you chose that specific configuration or protocol over alternatives.
• Know your Security: Given the nature of the alternative investment industry, emphasize your experience with data protection and compliance standards.

The Senior System Engineer position at Alter Domus is a vital role that requires both deep technical expertise and a strategic mindset. By focusing your preparation on the core Microsoft 365 pillars—identity, security, and device management—and demonstrating your ability to document and support global operations, you will position yourself as a top-tier candidate.

The salary range provided reflects the specialized nature of this role and the high level of responsibility involved. Use this data to benchmark your expectations and ensure your professional profile aligns with the seniority required for this position. Stay confident, rely on your practical experience, and prepare to demonstrate how you can contribute to the continued stability and growth of Alter Domus.