IT Security Officer

Callstack; Polska; On-site; PLN 223,000 - 335,000; Full time

Benefits offered by this job

Life insurance

Private healthcare for you and family

Wellbeing & development budget

Lunch allowance

Apple hardware

Job summary

Callstack in Wroclaw, Poland, is seeking an IT Security Officer who will take ownership of day-to-day security and infrastructure operations.

You’ll protect systems, devices, identities, and data, while supporting employees and continuously improving security processes across the company.

This role blends hands-on cybersecurity with incident response, compliance (ISO 27001, GDPR), cloud and endpoint security, vendor coordination, and security awareness to help Callstack stay secure as we grow.

Qualifications

• Experience in IT Security/Cybersecurity or similar roles.
• Good knowledge of macOS, Windows, Linux.
• Hands-on with endpoint security, IAM, MFA, SSO, and access management.
• Familiarity with ISO 27001, GDPR, ISMS, and risk management.

Responsibilities

• Develop and improve IT security policies, procedures, and controls.
• Maintain and enhance security tools (EDR/XDR, SIEM, MDM).
• Monitor alerts, investigate threats, and coordinate incident response.
• Manage backups, DR, and data protection; oversee security audits and compliance.

Skills

IT Security

Cybersecurity

Endpoint security

Cloud security

ISMS/GDPR/ISO27001

MFA/SSO access

Security monitoring

Job description

Salary: 20 000 - 30 000 PLN net + VAT (B2B)

Callstack supports and inspires top industry leaders in shipping better digital products and services to their users. We are a team of high-level experts in cross-platform development and consultancy. We co-create the technology, collaborate with the Meta team on setting the direction for the future growth of the React Native framework, and much more! We are recognized in the React Native Community as contributors to Open Source projects, organizers of React Universe Conf, as well as speakers at international conferences. We also organize regular community meetups in our HQ in Wrocław, Poland. We truly believe that you can get the best out of people when you give them a chance to participate and develop. At Callstack you are the one to decide in which area you want to grow, you’ll have an individual self-development budget to empower your competencies and gain new skills. Our goal is to give every employee the opportunity to speak up and introduce their ideas to build the future together. Join us and work with the TOP Silicon Valley and Fortune 500 companies in the USA!

We are looking for an IT Security Officer who will take ownership of our day-to-day IT security and infrastructure operations. You’ll be responsible for keeping our systems, devices, identities, and data secure, while also supporting employees and continuously improving our security processes. This role combines hands-on cybersecurity, IT infrastructure, endpoint management, incident response, compliance, and security awareness. You’ll work closely with employees across the company, internal teams, external security specialists, auditors, and technology vendors.

Responsibilities

• Manage and continuously improve IT security policies, procedures, and controls.
• Maintain and develop security tools, including SentinelOne EDR/XDR, SIEM, and Kandji MDM.
• Monitor security alerts, investigate threats, and coordinate incident response and remediation.
• Manage vulnerability management, endpoint security, access controls, MFA, VPN, and network security.
• Oversee backups, disaster recovery, and data protection.
• Support cloud and email security, including SPF, DKIM, and DMARC.
• Coordinate security audits, penetration tests, risk assessments, and ISO 27001/GDPR compliance.
• Maintain ISMS documentation, security KPIs, and compliance records.
• Support vendor security assessments and customer security questionnaires.
• Promote security awareness and continuously identify opportunities to improve and automate security processes.

Requirements

You are the right candidate if you have:

• Experience in IT Security, Cybersecurity, IT Infrastructure, or a similar role.
• Good knowledge of macOS, Windows, and Linux.
• Hands-on experience with endpoint security, MDM, IAM, MFA, SSO, and access management.
• Practical knowledge of network security, VPNs, firewalls, and DNS.
• Experience with security monitoring, vulnerability management, and incident response.
• Understanding of cloud security and AWS, Azure, or GCP.
• Familiarity with ISO 27001, GDPR, ISMS, and risk management.
• Knowledge of SPF, DKIM, and DMARC is a plus.
• Strong analytical, problem-solving, and communication skills.
• Good English and a proactive, ownership-driven mindset.

What we offer:

• Fully covered life insurance
• Private healthcare for you and your family
• Free access to the Helping Hand mental health platform
• Multisport Card or monthly allowance for other sports activities
• Individual Wellbeing & Development Budget
• Monthly lunch allowance
• Cool office in Wrocław city center
• Magnificent team events and activities
• Company-wide workations and team-building workshops
• Top-notch Apple hardware