Open-Xchange logo

Information Security Officer (m/f/d)

Open-Xchange

Demo, Espoo, Turin, Paris, Olpe, The Hague
Full-time, Part-time
5-10 years experience
Remote Only

Key Skills

Information Security Management
ISO 27001
ISMS Development
IT Risk Management
Security Auditing
Supplier Risk Assessment
Regulatory Compliance
NIS2
Cyber Resilience Act
Security by Design
Secure Software Development
Cloud Architecture
Risk Assessment
Security Governance
Customer Security Requirements
German and English Communication

Job Description

Our mission:

Are you an information security professional who wants to make a real impact across a decentralized organization? You'll drive the development of our ISMS, ensure compliance with ISO 27001, and work closely with teams to turn security requirements into practical, sustainable solutions.
At Open-Xchange (OX), we develop open-source communication and collaboration software used by public sector organizations, telcos, and hosting providers to keep data secure and under their control. Our products cover email, collaboration, DNS security, and related services, and are used by millions of people worldwide.

Discover what OX offers you:

  • We work in a non-hierarchical organization that empowers everyone to take responsibility, stay focused, and contribute directly to the company’s success and customer value.
  • We value expertise and continuous professional development. Our professionals work closely with experienced colleagues, take ownership of their work, and continuously expand their skills.
  • Openness and diversity are core to OX. Different perspectives, backgrounds, and ways of thinking strengthen our collaboration and help us see the bigger picture.

Your team:

Working closely with Engineering, Cloud Operations, and IT Architecture, you'll help embed information security as an integral part of our products and processes. You'll create transparency around technical and organizational security measures, continuously develop our Information Security Management System (ISMS), and advise our Management Board on relevant information security matters. In doing so, you'll help ensure that security is actively considered and effectively implemented across all areas of OX.

Your new job:

Run the ISMS and ISO 27001
  • Coordinate the identification and documentation of technical and organizational security measures across the OX Group, working with the responsible cells to keep documentation consistent, up to date, and traceable.
  • Drive the continuous development of our ISMS by establishing sustainable governance structures, clear responsibilities, and aligned security processes and policies across the OX Group, ensuring their consistent application within our decentralized organization.
  • Plan, coordinate, and support internal and external ISO 27001 audits as well as risk-based supplier assessments and audits. Coordinate the resolution of audit findings and track the implementation of agreed measures together with the responsible cells.
Make security work in a decentralized organization
  • Harmonize security requirements and processes across different software landscapes, taking varying levels of maturity and risk profiles into account. Support operational cells with clear guidance, practical templates, and targeted advice, while operational ownership remains with the respective cells.
  • Support product cells in identifying and assessing information security risks, document the assessment results within the ISMS, and recommend appropriate measures and risk-based priorities in close coordination with the relevant risk owners.
  • Embed Security by Design across our product portfolio, working closely with DevSecOps and product cells to define security requirements and risk-based priorities early in the development process, including through joint information security sprints. Implementation and operation of security tooling remain with the responsible technical cells.
Handle regulation and customers
  • Coordinate the assessment of relevant requirements arising from NIS2 and the Cyber Resilience Act (CRA) with the responsible functions and translate them into aligned security, evidence, and reporting processes, including clear responsibilities for operational implementation.
  • Capture and negotiate customer information security requirements and align them with the relevant product cells and business functions.

This is the tech stack you'll be working with:

Your background:

  • A degree in Computer Science, Business Information Systems, IT Security, or a comparable qualification, such as several years of relevant professional experience in information security, IT risk management, or IT compliance.
  • Practical experience in establishing, implementing, and certifying an Information Security Management System (ISMS) in accordance with ISO 27001. Knowledge of the German BSI IT-Grundschutz framework is a plus.
  • Experience assessing regulatory security requirements and translating them into practical technical and organizational requirements. Knowledge of NIS2 and the Cyber Resilience Act (CRA) is an advantage.
  • Ideally, experience introducing or further developing cross-functional security processes in decentralized organizations with varying levels of technical and organizational maturity, combined with openness to working in an environment without traditional hierarchical structures.
  • A solid understanding of software and cloud architectures, secure software development, and technical security measures, as well as experience working with engineering, architecture, and operations cells.
  • A structured and analytical approach, combined with practical experience in assessing information security risks and deriving appropriate measures and priorities.
  • Clear and convincing communication skills, strong subject-matter expertise, and the ability to explain complex topics in an accessible and audience-appropriate way, including to the Management Board. You are also able to assess customer information security requirements, represent them clearly, and coordinate them with product cells and customer-facing functions.
  • Excellent written and spoken German and English.

This is what you get at OX:

  • The flexibility to work 100% remotely ensures a work environment that suits you best.
  • Flexible working hours that allow you to successfully combine your home and family responsibilities with work. 
  • Getting together in-person for workshops and fun team events. 
  • Time off to volunteer – and mental health support when you need it.
  • We provide financial relief through corporate benefits and a subsidy for ergonomic chairs and desks.
  • We can discuss further location-related benefits together in an initial talk.

Join the team:

Join us in our fight for an open internet and deliver added value! Click “Apply now” to submit your application.

Your contact person:

Reach out to Justin ([email protected]) from the People Team. He will be able to discuss current opportunities and tell you more about our exciting vision and mission @OX.

Core Responsibilities

Develop and operate the group-wide ISMS, coordinate ISO 27001 audits, risk assessments, and remediation, and establish consistent security governance across a decentralized organization. Advise teams and management on security risks, embed Security by Design in product development, and coordinate regulatory and customer security requirements.

Requirements

Candidates should have a relevant degree or equivalent experience and practical experience establishing, implementing, and certifying an ISO 27001 ISMS. They should understand software and cloud security, risk assessment, and regulatory requirements, communicate effectively with technical teams and management, and have excellent written and spoken German and English.

Benefits

  • 100% Remote Work
  • Flexible Working Hours
  • In-Person Workshops and Team Events
  • Volunteer Time Off
  • Mental Health Support
  • Corporate Benefits
  • Ergonomic Chair and Desk Subsidy

About Open-Xchange

Industry: Software Development

Company size: 201-500 employees

Open-Xchange (OX) is a market leader of secure, open communication and office productivity software, email server software and DNS solutions, with hundreds of millions of users worldwide. As the leading independent email provider, we work with some of the world’s largest hosters, telcos and ISPs (including partners such as IONOS, KPN, Orange, Italiaonline, NTT, Softbank and TalkTalk), as well as public sector organizations. Our roots in open source have shaped our view of the world and culture – open, diverse, and with a bias to act, giving everyone at OX room to take responsibility within their team and grow. As a company, we believe in an internet that is open, safe and free, and create competitive products that allow our customers to deliver secure internet services with great user experience, and that respect privacy and generate value. With 230+ people worldwide, OX develops and operates open source software (aaS) for mail/messaging and collaboration/productivity. Dovecot is the world’s most popular IMAP server software, and PowerDNS provides secure DNS services to our customers and their users. Our business is fast-paced and changing constantly. We are always looking for people who share our vision, who want to make a difference, thrive in agile, non-hierarchical environments, and enjoy working in a high-tech environment as part of a truly international team. OX is headquartered in Cologne, Germany, with further offices in Hamburg, Nuremberg and Olpe), in addition to the USA (Palo Alto, CA, and New York, NY), Finland (Espoo), The Netherlands (The Hague), Italy (Turin), and Japan (Tokyo). If you're interested in joining OX, please visit: https://ox.io/careers

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