Senior IT-Administrator Fachinformatiker Systemintegration (m/w/d)

DEFINET bietet einen Komplettservice für Finanzberatungsunternehmen. Mit rund 70 Mitarbeitern unseren Leistungszentren Eschborn & Hannover übernehmen wir für unsere Kunden alle Backoffice-Themen rund um die Vertriebsunterstützung, Abwicklung und IT.

Unseren Partnern bieten wir ein ganzheitliches Produktportfolio: Versicherungen, Investments, Finanzierungen, Immobilien, Sachwerte und vieles mehr. Unsere hoch qualifizierten Experten unterstützen Finanzberater:innen vollkommen unabhängig.

Aufgaben

• Betrieb und Weiterentwicklung der IT-Infrastruktur
• Administration von Windows-/Linux-Systemen und Azure AD / Entra
• Steuerung und Optimierung des 1st- und 2nd-Level-Supports
• Planung und Umsetzung von IT-Projekten (Cloud, Migration, Automatisierung)
• Administration von Microsoft 365 und Azure
• Weiterentwicklung von IT-Security-, Backup- und Monitoring-Konzepten
• Enge Zusammenarbeit mit internen Teams und externen Partnern

Qualifikation

• Abgeschlossene IT-Ausbildung oder Studium im IT-Bereich
• Mehrjährige Erfahrung in der System- und Netzwerkadministration
• Sehr gute Kenntnisse in Windows Server, Azure AD / Entra und
• Netzwerktechnologien
• Erfahrung mit Cloud-Umgebungen (Azure, Microsoft 365) und
• Virtualisierung
• Fundiertes Wissen in IT-Security, Backup- und Monitoring-Lösungen
• Erfahrung in eigenverantwortlicher Projektarbeit
• Strukturierte, lösungsorientierte und kommunikative Arbeitsweise
• Sehr gute Deutschkenntnisse (C1) und gute Englischkenntnisse

Benefits

Flache Hierarchien | Team Spirit

Betriebliche Krankenversicherung

Betriebliche Altersversorgung

Mobile Office

Corporate Benefits

Weiterbildung | Entwicklung | Training

Was Dich erwartet:

• KMU-Struktur mit kurzen Wegen und direktem Einfluss
• Starkes Team mit enger Zusammenarbeit und offenem Austausch
• Flexible Arbeitsweise (inkl. Mobile Office)
• Verantwortung und Gestaltungsspielraum
• Stabilität und Entwicklungsmöglichkeiten

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Position Details

• Job Title: Senior IT-Administrator Fachinformatiker Systemintegration (m/w/d)
• Company / Organisation: DEFINET AG
• Location: Hanover
• Employment Type: Full-time
• Field / Industry: Software Development
• Work Arrangement: On-site or hybrid — Hanover

About This Opportunity

This full-time opportunity at DEFINET AG is an excellent opening for experienced professionals in the field of software engineering and technology. The role is structured around an on-site or hybrid environment based in Hanover and is designed for candidates who are ready to make a meaningful contribution from the moment they join.

Based in Hanover, this role offers the opportunity to collaborate closely with a local team in a structured professional environment. Candidates currently based in the area or open to relocation are strongly encouraged to apply.

Whether you are an established practitioner in software engineering and technology or a highly skilled professional looking for your next challenge, this Senior IT-Administrator Fachinformatiker Systemintegration (m/w/d) role offers the platform to apply your expertise in a real-world, results-oriented environment. DEFINET AG is looking for a candidate who can hit the ground running and add genuine value to the team.

Who Should Apply

This role is ideal for candidates who have a solid background in software engineering and technology and a demonstrable track record of delivering high-quality results. You should possess analytical thinking, attention to technical detail, and a methodical approach to problem-solving. Experience working with modern development tools, version control systems, and cloud platforms will be an advantage, though a commitment to continuous learning and professional development is equally valued.

Beyond technical or domain expertise, DEFINET AG is looking for someone who communicates clearly, collaborates effectively with colleagues and stakeholders, and takes ownership of their work from start to finish. If you thrive in a professional environment and are passionate about the opportunity to build reliable, scalable, and high-performing digital products, we encourage you to apply.

Key Competencies for This Role

Successful candidates for the Senior IT-Administrator Fachinformatiker Systemintegration (m/w/d) position at DEFINET AG will typically demonstrate the following core competencies:

• Domain expertise — a strong foundation of knowledge and hands-on experience in software engineering and technology
• Problem-solving ability — the capacity to identify challenges, think critically, and implement practical solutions efficiently
• Communication skills — clear and professional communication with colleagues, stakeholders, and partners at all levels
• Self-management — strong time management and the ability to prioritise a varied workload while meeting deadlines
• Team collaboration — a collaborative and supportive approach to working alongside colleagues across departments or locations
• Adaptability — the ability to respond positively to change and thrive in a dynamic, evolving work environment

How to Apply

To apply for this Senior IT-Administrator Fachinformatiker Systemintegration (m/w/d) position at DEFINET AG, click the "Apply Now" button on this page. You will be taken directly to the official application page where you can complete and submit your application.

Before applying, please ensure that your CV or résumé is fully up to date and clearly highlights your experience and accomplishments in software engineering and technology. If a cover letter is included or requested, tailor it specifically to this role and explain how your background, skills, and goals align with what DEFINET AG is looking for in a Senior IT-Administrator Fachinformatiker Systemintegration (m/w/d).

All applications for this role are processed directly by DEFINET AG. Career Nest facilitates the job discovery process and does not pre-screen or forward applications on behalf of employers. There are no fees for job seekers at any stage of the application process.

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