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CWA GmbH

Senior System Administrator – AWS

CWA GmbH

. Ensure the secure, stable, and high-performance operation of the AWS infrastructure .

Posted 11/3/2026full-timeLilienthal • GermanySenior💰 €60,000 - €80,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in administering and optimizing AWS infrastructure, including EC2, RDS, and S3, while ensuring high performance and security. Proficient in Microsoft 365 administration, with strong capabilities in user management and IT security concepts.

Highest-signal resume keywords
AWS Infrastructure AdministrationMicrosoft 365 AdministrationPerformance OptimizationIT Security ConceptsCloud Infrastructure Management

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
AWS EC2AWS RDSAWS S3Microsoft Entra IDMicrosoft IntuneSharePoint OnlineExchange OnlineMicrosoft TeamsBackup and Recovery ConceptsAWS Well-Architected Framework
Soft Skills
Solution-Oriented ApproachTeam SpiritDecision-Making
Certifications & Qualifications
Degree in Computer ScienceVocational Training as IT Specialist
Industry Keywords
Cloud InfrastructureIT SecurityPerformance MonitoringDisaster RecoveryTechnical Documentation

Tech Stack

Tools & technologies
AWSCloudEC2

About the role

Key responsibilities & impact
  • Ensure the secure, stable, and high-performance operation of the AWS infrastructure
  • Administer and optimize the AWS hosting environment, including EC2, RDS, S3, and other cloud components
  • Optimize the performance and scalability of the hosting infrastructure
  • Further develop measures for availability, monitoring, backup, and disaster recovery
  • Administer the Microsoft 365 environment, including Microsoft Entra ID, Intune, SharePoint, Exchange Online, and Microsoft Teams, including Teams Phone
  • Manage user accounts, devices, access rights, and permissions
  • Support technical processes related to employee onboarding, internal transfers, and offboarding
  • Further develop IT security concepts and implement security policies, access controls, and protective measures
  • Analyze technical issues, develop sustainable solutions, and automate recurring administrative tasks
  • Evaluate configurations and architectural decisions based on proven best practices
  • Document technical decisions, configurations, and operational procedures
  • Handle technical customer questionnaires covering infrastructure, IT security, and operations
  • Formulate precise, clear responses in coordination with the relevant specialist departments

Requirements

What you’ll need
  • Degree in computer science, vocational training as an IT specialist for system integration, or equivalent knowledge and qualifications
  • Several years of solid professional experience administering professional cloud and IT infrastructures
  • In-depth knowledge of the AWS Well-Architected Framework and practical experience applying its architectural and operational principles
  • Experience independently managing production web applications
  • Extensive experience with performance optimization, scaling, monitoring, and backup and recovery concepts
  • Very good knowledge of Microsoft 365 administration, particularly Entra ID, Intune, SharePoint Online, Exchange Online, and Microsoft Teams
  • Independent, structured, and solution-oriented approach to work, with the ability to make well-founded decisions and implement improvements autonomously
  • Team spirit and an interest in new technologies and areas of expertise
  • Excellent German and English language skills

Benefits

Comp & perks
  • Flexible working hours, a 38-hour workweek, and flexitime
  • 30 days of annual leave
  • Home office
  • Direct access by tram
  • Support and comprehensive onboarding from experienced mentors
  • Ergonomic workstations with height-adjustable desks
  • An open corporate culture in which every opinion and every individual is valued
  • Attractive salary
  • Support for parental leave
  • Permanent employment and a collaborative, team-oriented working environment
  • Employer-sponsored savings benefits for retirement planning
  • Corporate fitness membership (EGYM Wellpass)