IT Infrastructure & Security Manager (m/f/d)

As an IT Infrastructure & Security Manager (m/f/d), you will play a vital role in maintaining, maintaining, and improving our landscape across multiple locations. Working close with internal stakeholders and technical teams, you will help ensure the reliability, performance, and security of our infrastructure while supporting the company's growth and innovation. We are looking for a hands-on professional who combines strong infrastructure expertise with a security-first mindset and enjoys working in a dynamic, international environment.

What is your Day to Day Mission:

Manage and maintain our IT infrastructure, including Windows and Linux servers, cloud services, and endpoint devices.

Ensure the availability, performance, and security of business-critical systems and services.

In regard to security administer and optimize Microsoft 365 services, including Entra ID, Intune, Exchange Online

Implement, monitor, and maintain better security controls, policies, and best practices across the organization.

Mobile Device Management (MDM) solutions and endpoint security platforms for Windows, macOS, and mobile devices.

Support and maintain virtualization environments and infrastructure services.

Monitor network performance and security, troubleshoot connectivity issues, and collaborate on infrastructure improvements.

Review and maintain firewall configurations (Fortigate Infrastructure, Sophos)

Provide second-level support for complex infrastructure and security incidents.

Contribute to IT projects, process improvements (BSI-Grundschutz, ISO /IEC 27001).

What you bring to the team:

A degree in Computer Science, Information Technology, or a comparable qualification and professional experience (CCNA, CompTIA+).

Hands-on experience in IT infrastructure administration, system management, or IT operations.

Good knowledge of Microsoft 365 administration, including Intune, Entra ID, and related cloud services.

Experience working with Windows environments; familiarity with Linux and macOS is highly desirable.

Solid understanding of IT security principles, endpoint protection, identity management, and system hardening.

Solid knowledge of networking concepts, including TCP/IP, DNS, DHCP, VPNs, and firewalls.

Knowledge in backup procedures (Veeam Backup)

Strong analytical and troubleshooting skills with a structured and solution-oriented approach.

The ability to communicate technical concepts clearly to both technical and non-technical stakeholders.

A proactive mindset, willingness to ownership take, and enthusiastic for learning new technologies and security trends.

fluency in English; German language skills are considered a plus.

Why Quantum-Systems: We believe in the power of combined efforts: tech expertise paired with a customer-centric focus.

We are industry pioneers who are ambitious, bold, and visionary.

We push limits, think outside-the-box and strive for technological excellence shape to the future of aerial data.

We promise to be your runway for individual and professional growth.

Our benefits: Company pension scheme: We support you so that you can already make commissions for later.

Flexible working hours: With trust-based working hours, you are not only responsible for your working hours, but so for your work-life balance.

Mobile Work: If things get a little busy in the office, you have the option to work remotely one flexible day per week to create the right balance.

Stay active: With EGYM Wellpass, you get access to thousands of fitness and sports facilities — and of course, we subsidize the membership.

Bike leasing: We support you in staying environmentally mobile and healthy.

Corporate Benefits: Your opportunity for attractive offers and discounts from well-known suppliers and brands, e.g. Adidas, Apple, Expedia.

Employee events: We not only want to grow together, but so celebrate our successes together.

Lunch-Card: Be powerful with delicious energy, daily lunch budget is sponsored.

Company Shuttle: Enjoy our convenient shuttle service that picks you up from Pasing in Munich and brings you to our location, with return trips at the end of the workday.

About us: Quantum Systems develops advanced autonomous systems for defense and security operations across multiple domains, powered by integrated software and AI. Quantum Systems is at the forefront of AI-powered aerial, ground, naval robotics, developing a family of smart systems that go far beyond traditional drones. Built on a foundation of in-house hardware, software and AI, our systems transform data into critical insights, empowering decision-making across security, defense and public safety, as well as for the commercial, industrial and GIS sectors. Our integrated system with industry leading endurance, enable seamless interoperability and software interconnectivity. On-board AI powers multi-modality sensing, autonomous navigation, anti-jamming, swarm and more. Our commitment: We are an open-minded company that not only values diversity, but advertises it. Regardless of gender, age, ethnic origin, religion, sexual orientation or disability, we believe that the diversity of our is an essential part of our success. At our company, every voice is heard and every perspective is valued. We believe that our differences enrich us and help us to find creative solutions and generate innovative ideas. We pride ourselves on creating an inclusive work environment where all employees can reach their full potential.

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