Steffen Müller-Principal Consulting Partner - freelancing
Check rate
Experience
Principal Consulting Partner - freelancing
microfin
Senior Security Advisor (vCISO) & Enterprise Security Architect (vTISO)
ING DiBa Holding Germany
Senior Security Advisor & Security Architect
Deutsche Post / DHL
Senior Security Advisor/Enterprise Security Architect
Gothaer Versicherungen
Senior Security Advisor/TISO Cloud Transformation
Gothaer Versicherungen
Senior Security Advisor & Security Architect PAM & PKI
Hamburg Commercial Bank
Senior Security Advisor & Security Architect PKI
Kreditanstalt für Wiederaufbau (KfW)
Senior Security Advisor & Security Architect
Deutsche Post / DHL
Lead Security Architect PKI
BASF
Consultant TPAM (Total Privileged Access Management)
Kreditanstalt für Wiederaufbau (KfW)
Senior Security Advisor & Security Architect
Deutsche Post / DHL
Senior Security Architect & Advisor
Deutsche Post / DHL
Senior Security Advisor & Security Architect All-IP
Deutsche Post / DHL
Senior Security Advisor & Security Architect
Deutsche Post / DHL
Senior Information Security Manager
Hessische Landesbank, HeLaBa
Senior Security Advisor & Security Architect
Deutsche Post / DHL
Senior Security Advisor & Risk Manager
Deutsche Post / DHL
Senior Security Advisor & Risk Manager
Magenta Mannheim for CSL Behring
Senior Security Specialist & Advisor
British Telecom
Senior Security Architect & Advisor
Deutsche Bank
Global MITSA TISO
Deutsche Bank
IS Management, Senior Consultant – Project Security Manager
Deutsche Telekom
Senior Security Consultant – Regional Security Manager
Deutsche Telekom
Senior Security Consultant & IT Risk Advisor
European Central Bank (ECB)
Senior Security Consultant & Consulting Auditor
Deutsche Post / DHL
Senior Security Consultant (Governance) & Consulting Auditor
Deutsche Bank
Senior Consultant – Project Security Manager
Intercomponentware (SAP)
Senior Consultant – Project Security Manager
Hessian Central Office for Data Processing
Senior Network & Security Consultant
Eumetsat
Senior Network & Security Consultant
Telekurs Financial
Senior Consultant Networks & Security
Star Alliance
Technical Co-Project Manager
DBV-Winterthur Holding AG
Lead Consultant/System Integrator
Telecash
Lead Consultant/Technical Project Assistant
DBV-Winterthur Holding AG
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Banking and Finance, Transportation, Insurance, Telecommunication, Government and Administration, and Space Exploration.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Strategy, Project Management, and Audit.
Summary
Steffen Müller has been deeply rooted in IT since 1980 and has been working as a freelance information security officer (vCISO) for clients in heavily regulated industries since 1999. In the field of ISM (Information Security Management) and GRC (Governance, Risk & Compliance), he supports CISOs, CTOs, project or program managers as a professional point of contact and sparring partner. With his deep technical background, he also acts as a TISO (Technical Information Security Officer) or as a strategic contact for the implementation support of IT security-relevant infrastructures in the role of Enterprise Security Architect. As an intermediary between service providers, specialist departments and the customer’s management, he takes on a central interface function.
Skills
Banks
Insurance Companies
Telecommunications/Isps
It Service Providers
Logistics
Chemical Industry
Pharmaceuticals
Aviation
Strategic Information Security Planning: Developing And Maintaining The Security Strategy And Program In Line With Business Goals
Risk Management: Identifying, Assessing And Prioritizing Risks; Developing Risk Mitigation Strategies
Compliance Management: Ensuring Compliance With Relevant Laws, Regulations And Standards (E.G. Gdpr, Nis2, Dora)
Security Reviews And Audits: Planning And Conducting Internal And External Security Audits
Incident Management: Developing And Implementing Processes For Detecting, Investigating And Responding To Security Incidents
Awareness And Training: Initiating Training Programs To Raise Security Awareness Among Employees
Consulting And Leadership: Acting As An Advisor To Management And Leadership Teams On All Matters Of Information Security
Technology Monitoring: Monitoring And Evaluating Security Technologies And Cybersecurity Trends To Continuously Improve The Security Architecture
Coaching Junior Information Security Professionals
Solution-Oriented And Collaborative Approach
Reliability, Openness, Directness, Commitment
Convincing Presence And Strong Presentation Skills
It Grc
Pre- & Post Audit Consulting
Enterprise Security Architecture
Pki
(C)Iam
Pam
Cloud Security
It Architecture
Networks
Private Clouds
Provider Infrastructure
Public Clouds
Mac Os
Unix
(Privileged) Identity & Access Management
Federated Identity Management
Integrating And Connecting External Users Using E.G. Saml, Openid Connect
Directory Services
Public Key Infrastructures
Single Sign On
Smartcards
Etoken
Security Assessments/Expert Reports
Digital Signatures & Crypto Governance (Including Venafi Tpp & Trustauthority) – Training As Vsa
Network And System Security
Ot Networks
Iot In General
Network Design
Aaa (Authentication, Authorization And Accounting)
Vpns & Mobile Computing
Data Center Security
Languages
Education
Technical Assistant in Computer Science · Germany
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Steffen is based in Königstein im Taunus, Germany and can operate in on-site, hybrid, and remote work models.
Steffen speaks the following languages: German (Native), English (Advanced).
Steffen has at least 24 years of experience. During this time, Steffen has worked in at least 26 different roles and for 20 different companies. The average length of individual experience is 1 year and 9 months. Note that Steffen may not have shared all experience and actually has more experience.
Based on recent experience, Steffen would be well-suited for roles such as: Principal Consulting Partner - freelancing, Senior Security Advisor (vCISO) & Enterprise Security Architect (vTISO), Senior Security Advisor & Security Architect.
Steffen's most recent position is Principal Consulting Partner - freelancing at microfin.
In recent years, Steffen has worked for microfin, ING DiBa Holding Germany, Deutsche Post / DHL, and Gothaer Versicherungen.
Steffen is most experienced in industries like Banking and Finance, Insurance, and Transportation. Steffen also has some experience in Telecommunication, Government and Administration, and Space Exploration.
Steffen is most experienced in business areas like Information Technology, Strategy, and Project Management. Steffen also has some experience in Audit, Operations, and Supply Chain Management.
Steffen has recently worked in industries like Banking and Finance, Insurance, and Transportation.
Steffen has recently worked in business areas like Strategy and Information Technology.
Steffen attended education in Technical Assistant in Computer Science.
Steffen has 4 certificates. Among them, these include: CCSP (Certified Cloud Security Professional), Prince2 Practitioner (Project Manager), and CISA (Certified Information System Auditor).
The availability of Steffen needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 27 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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