Senior IT Administrator

APN Promise; Warszawa; Hybrid; PLN 120,000 - 160,000; Full time

Benefits offered by this job

Hybrid or remote work model

Private medical care

Life insurance

Multisport card

Language courses

Job summary

Promise Group is seeking an Internal IT Administrator to own the administration, security, and continuous improvement of our internal IT infrastructure. You will collaborate with IT team members to ensure stability, security, and reliable services for employees, focusing on ADDS, SCCM, backup, RDS, and Defender for Endpoint.

The role requires hands-on expertise in Windows Server, Active Directory, Intune, and endpoint management, with strong networking and scripting skills, and a hybrid work

Qualifications

• 4+ years of professional experience in IT infrastructure administration.
• Strong hands-on experience with Active Directory / ADDS.
• Experience with backup solutions such as Veeam and/or Synology.
• Experience administering RDS.
• Experience with Microsoft Defender for Endpoint.
• Good knowledge of Windows Server and Microsoft 365 administration.
• Experience with Intune and endpoint management.
• Good understanding of networking concepts such as DNS, DHCP, VPN, NPS, and 802.1X.
• Working knowledge of PowerShell.
• Experience with ADFS and ADCS/PKI.
• Knowledge of Linux administration.

Responsibilities

• Administer and maintain Windows Server infrastructure, including ADDS, DNS, DHCP, GPO, File Server/DFS.
• Manage and maintain Active Directory, including users, groups, permissions, policies, and identity-related services.
• Administer SCCM with a focus on software deployment, OS imaging, and patch management.
• Manage and monitor backup solutions, including Veeam and Synology NAS, and ensure data can be recovered.
• Administer and maintain Remote Desktop Services (RDS).
• Manage Microsoft Defender for Endpoint, including device onboarding and security policy configuration.
• Administer Microsoft Intune, Autopilot, Windows Autopatch, and other endpoint management solutions.
• Administer Microsoft 365 and Entra ID, including Exchange Online, Teams, SharePoint Online, and OneDrive.
• Maintain and troubleshoot Hyper-V, physical servers, storage, and server hardware.
• Support VPN, DirectAccess/Always On VPN, NPS, 802.1X, and other core network services.

Skills

Active Directory / ADDS

SCCM

PowerShell

Microsoft Defender for Endpoint

Intune

Windows Server administration

RDS

ADFS / PKI

Linux administration

Networking basics (DNS/DHCP/VPN/NPS/"x

Tools

SCCM

Veeam

Synology NAS

Windows Autopilot

Job description

At Promise Group, we don’t just deliver technology. We accelerate business. As a trusted Microsoft Partner, we help organizations unlock the full potential of Microsoft technologies through cloud, AI, security, modern workplace, data, and infrastructure solutions. Through our work with both business customers and partner networks, we deliver innovative solutions that drive digital transformation across CEE, the Baltics, SEE, and CCA markets.
We work in an international environment where collaboration and a proactive approach matter. We believe in taking responsibility, building relationships based on trust and respect, and always looking for better ways to learn, grow, and improve. We value people who take ownership of their work, share knowledge, and enjoy working toward common goals.

We are looking for an Internal IT Administrator to join our IT team and take responsibility for the administration, maintenance, security, and continuous improvement of our internal IT infrastructure.

You will work closely with the internal IT team (I T Administrators, IT Support Specialists, and a Security Engineer ) , helping ensure that our infrastructure and IT services remain stable, secure, and reliable for employees across the organization. T his is a hands-on role with a strong focus on Active Directory, SCCM, backup infrastructure, RDS, and Microsoft Defender for Endpoint .

In this role, you will:

• Administer and maintain Windows Server infrastructure , including ADDS, DNS, DHCP, GPO, File Server/DFS, and related services.
• Manage and maintain Active Directory , including users, groups, permissions, policies, and identity-related services.
• Administer SCCM with a focus on software deployment, OS imaging, and patch management.
• Manage and monitor backup solutions , including Veeam and Synology NAS, and ensure data can be successfully recovered.
• Administer and maintain Remote Desktop Services (RDS) .
• Manage Microsoft Defender for Endpoint , including device onboarding and security policy configuration.
• Administer Microsoft Intune , Autopilot, Windows Autopatch, and other endpoint management solutions.
• Administer Microsoft 365 and Entra ID , including Exchange Online, Teams, SharePoint Online, and OneDrive.
• Maintain and troubleshoot Hyper-V, physical servers, storage, and server hardware .
• Support VPN, DirectAccess/Always On VPN, NPS, 802.1X, and other core network services.
• Diagnose infrastructure incidents, identify root causes, and implement effective solutions.
• Monitor infrastructure performance, availability, and security and proactively address potential issues.
• Maintain web hosting, domains, and public DNS.
• Use PowerShell to automate repetitive administrative tasks and improve operational efficiency.
• Maintain technical documentation and contribute to IT infrastructure projects and continuous improvement initiatives.
  
• Collaborate with the Security Engineer on infrastructure security, vulnerabilities, and security incidents.
• Support the maintenance and operation of the company's server room and related infrastructure.

What makes you a great fit:

• 4+ years of professional experience in IT infrastructure administration .
• Strong hands-on experience with Active Directory / ADDS .
• Practical experience with SCCM , particularly software deployment, imaging, and patch management.
• Experience with backup solutions , preferably Veeam and/or Synology.
• Experience administering RDS .
• Experience with Microsoft Defender for Endpoint .
• Good knowledge of Windows Server and Microsoft 365 administration.
• Experience with Intune and endpoint management.
• Good understanding of networking concepts such as DNS, DHCP, VPN, NPS, and 802.1X. Experience with virtualization, preferably Hyper-V .
• Working knowledge of PowerShell .
• Experience with ADFS and ADCS/PKI.
• Knowledge of Linux administration.
• Experience with Windows Autopilot, Windows Autopatch, or Windows 365.
• Experience with enterprise storage and physical server infrastructure.
• Knowledge of web hosting and public DNS.
• Experience with ITSM tools such as GLPI.
• Experience with PowerShell automation.
• Strong troubleshooting and problem-solving skills.
• Ability to work independently while being a collaborative team player.
• Good communication skills and a proactive approach to identifying and solving problems.
• Polish language at C1+ level, English at B2+ level.
• Openess to work in a hybrid model from our Warsaw office.

Technologies you will work with:

• Core infrastructure: ADDS, ADFS, ADCS/PKI, Windows Server, File Server/DFS, DNS, DHCP, GPO, Hyper-V, RDS, Linux
• Endpoint & device management: SCCM, Intune, WSUS, Windows Autopatch, Autopilot, Windows 365
• Backup & hardware: Veeam, Synology NAS, physical servers, storage, iDRAC/iLO/iRMC

What you can expect from us:

• Opportunity to work with one of the leading Microsoft partners in the region, contribute to impactful international projects, and collaborate with colleagues, customers, and partners across CEE, the Baltics, SEE, and CCA & UA
• Stable employment in a company with over 30 years of experience and a strong market position
• Hybrid or remote work model
• Plenty of opportunities to learn and grow through training, conferences, mentoring, shadowing, and professional development programs
• Collaborative, non-corporate environment where teamwork, trust, and mutual support are part of everyday work
• Vibrant social and sports culture, including integration trips, team outings, office events, company picnics, and our annual themed company party
• Recognition Program that celebrates employees who make a meaningful contribution to our business and reflect the values that shape our culture, alongside Anniversary Awards recognizing career milestones
• Employee referral program that rewards you for helping us grow our team with great talent
• Benefits package including private medical care, life insurance, a Multisport card, and co-financed foreign language classes
• Extra perks to brighten your week – fresh fruit on Wednesdays and ice cream during the summer months

Our Values:

Promise Group is dedicated to collaboratively enhancing technological competencies and inspiring individuals and organizations to achieve their full potential. Our culture is built on open communication, mutual respect, responsibility, trust, and commitment. We prioritize transparent dialogue and active listening, value diverse perspectives, and maintain healthy relationships by addressing concerns constructively. We take responsibility for our actions, keeping our promises and learning from mistakes. Trust is fundamental; we avoid superficial judgments and build strong connections. Our commitment to continuous improvement drives us to hone our skills, tackle new challenges, and pursue innovative initiatives, ensuring we make a positive impact on our clients, employees, and the broader community.