O

Senior Microsoft Systems Engineer

optasia • Greece
Remote
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Lead the design, implementation, and optimization of Microsoft-based systems for scalability, security, and performance. Administer Windows Server, Active Directory, Intune, Azure, and related collaboration platforms while driving automation and incident resolution. Requires 7+ years of senior-level Microsoft infrastructure experience, strong PowerShell skills, and fluent English.

Key Highlights
Lead Microsoft-based systems design, implementation, and optimization
Administer Windows Server, Active Directory, Intune, and Azure
Drive PowerShell automation and incident resolution
Mentor engineers and collaborate cross-functionally
7+ years senior Microsoft infrastructure experience required
Key Responsibilities
Lead the design, implementation, and optimization of Microsoft-based systems for scalability, security, and performance
Take ownership of Windows and Azure architecture decisions, contributing to long-term infrastructure strategy and roadmap planning
Design and manage enterprise Active Directory environments, including GPO governance and identity management
Administer and optimize Windows Server 2022 / 2025 environments
Manage and enhance Microsoft Intune for endpoint lifecycle management, compliance enforcement, and secure device provisioning
Architect and support Azure environments, including identity, networking, backup, and disaster recovery solutions
Act as a technical authority during critical incidents: diagnose, troubleshoot, and resolve complex Microsoft-related production issues under pressure
Drive automation initiatives using PowerShell and Azure-native tools to eliminate manual tasks and improve operational reliability
Establish and enforce system hardening, compliance standards, and Microsoft security best practices (CIS, NIST, etc...)
Administer and support collaboration platforms such as Jira, Confluence and Bitbucket, ensuring integration with infrastructure workflows
Mentor and support junior and mid-level engineers, fostering knowledge sharing
Collaborate with cross-functional teams to align infrastructure capabilities with business objectives
Evaluate and introduce new Microsoft technologies to enhance system resilience and performance
Technical Skills Required
Windows Server Active Directory Microsoft Azure
Benefits & Perks
Work from anywhere policy
Competitive remuneration package
Extra day off on your birthday
Performance-based bonus scheme
All the tech gear you need to work smart
Nice to Have
BSc/MSc degree in Computer Science, Engineering, or a related field will be considered a plus

Job Description

Optasia is a real-time financial intelligence company. We build precision intelligence that unlocks financial opportunity at scale, running millions of automated credit decisions every day across high-growth markets where formal credit data is limited. Our AI-powered platform turns permitted behavioural data and real-time signals into precise, responsible credit decisions. Embedded within the systems of telcos, banks, digital wallets and other partners, it helps them extend relevant financial services to more people while maintaining strong portfolio control and opens profitable new segments that were previously out of reach. This is how Optasia turns potential into financial progress, responsibly and at scale.

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