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Cyber Security Expert (m/f/d)

Date: Mar 7, 2023

Location: Düsseldorf, NW, DE, 40474

Company: Telefonica S.A.

Contract type: full-time, unlimited
Location: Munich, Düsseldorf, Berlin (Teltow), Nuremberg, Hamburg 
Entry: At the earliest possible date


Working anywhere. We work where it is most productive. After a successful application process, we offer you the opportunity to work anywhere in Germany. At Telefónica, we rely on a flexible hybrid model that includes the benefits of both remote work and on-site work. You will be assigned to the nearest Telefónica location based on where you live. We will discuss further details with you during the application process.


Who we are

We are O2 Telefónica - with our mobile brands we connect millions of people and offer our customers mobile freedom in the digital world. As a leading telecommunications provider, we are playing a key role in shaping digitisation in Germany. Our approximately 7,400 employees in Germany drive the transformation forward every day - in our own company as well.


Telefónica is one of the top employers in Germany and is part of the global telecommunications group Telefónica S.A. with 110,000 committed employees worldwide.  

Become part of our unique team and let's make a difference together! 


As a Cyber Enablement expert, you are a member of Telefonica’s security expert team which is supporting internal projects to implement secure architectures according to external regulations, Telefonica policies and pre-defined blueprints. 

A strong focus is to support Telefonica’s strategy to radically transform applications with up-to-date technologies stacks using hybrid cloud platforms. 

You will support complex projects in the domain of telecommunication and IT to build up secure applications and to integrate them into security services. You will create blueprints that other applications can benefit from achievements of previous projects, and you will mentor other members of the Cyber Enablement team to continuously improve the team knowledge level. 

The team and therefore you are the interface between the technology organization and the security department. You are the trusted contact point for other team members within the security organization, projects and application owners and act as an internal consultant, mediator, and technical security expert. 


 What to expect

  • Act as Single Point of Contact for internal projects towards the security organization 
  • Identify and document applicable security controls to application teams 
  • Consult application owners, solution architects and developers how to achieve security requirements by adapting security blueprints and best practices and by integrating components into central security services 
  • Verify the effective implementation of security controls 
  • Jointly with the Security Architecture Team, develop, document and advocate security blueprints 
  • Mentor more junior colleagues in the Cyber Enablement team to improve their technical and personal skills 
  • Advocate secure architecture and development in Telefonica communities and by attending Telefonica Group and external conferences 


What you bring 

  • Bachelor/ Master/ PhD degree in Computer Science / Information Technology or equivalent experience 
  • Minimum 3 years of relevant work experience, including security architecture 
  • Background in Security consulting is a plus, Background in telecommunication sector is a plus 
  • Solid security fundamentals of security concepts, threats, vulnerabilities, risks, defenses, security principles, and security standards  
  • General knowledge about public cloud platforms, virtualization stacks, security automation, network architecture, Identity and Access Management, security development and encryption, Expert knowledge in two of the mentioned domains 
  • Strong background experience in cyber security, working within large and complex organisations/projects 
  • Ability to translate complex security risks into simple technical requirements 
  • Ability to raise awareness about Security best practices to business audiences 
  • Excellent written and spoken English, ability to effectively communicate to technical and non-technical audiences. The same in German is advantageous 


What we offer

Modern, flexible working environment: Work wherever you want within Germany. Whether in home office or one of our well-equipped offices. We offer you maximum flexibility to organize your working day.

Training & Development: Everthing you need for your individual growth. With a personal development plan, learning journeys and the possibility of job rotations, you will reach your goals with us – according to our guiding principle „connect, learn and move2grow".

Financial benefits: A smartphone for business and private use, as well as the possibility to provide for partners, friends and family via a credit balance, is a given. In addition, you benefit from a variety of corporate benefits.

Health: Our "Feel Good" program keeps your body and mind in balance. Among other things, we offer fitness classes, nutritional counseling, and programs to improve workplace ergonomics and work-life balance.

Social engagement: We are also involved in social projects outside of our day-to-day work. You can support social projects through volunteering days / holidays or charity runs.


How to apply and what else you should know

Convince us with your meaningful curriculum vitae as well as corresponding certificates. You do not need a letter of motivation with us. Please note that applications are only possible via our applicant portal and applications by e-mail cannot be considered. 

Do you have questions about our application process and are you interested in further information about the position? Please reach out to our Talent Operations Team ( 


In case of same qualification, applicants (m/f/d) with severe disability will be preferred. All gender are equally welcome.