Public Key Infrastructure Experts in Cologne
in minutes from over 15,000 CVs with the power of AI.Hire experts who secure certificate lifecycles, CA operations, and TLS trust chains, and who handle PKI rollouts across internal systems and external services. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used Public Key Infrastructure
Matthias Schneider
Last position:
Overall Project Coordinator at Bundeswehr Informatik (BWI GmbH)
- PMO lead for Security Clearance 2 (SÜ2) cleared
- Reporting to sub-program management GMN
- System maintenance 25+
- Functional control and coordination of Jira setup
- Preparation of decision papers (e.g. project planning, steering model, communication plans, controlling models, role and responsibility matrices)
- Development of program-wide knowledge management using Confluence, creation of Jira concept
- Development of an access concept for all project tools
- Analyzing existing processes, identifying improvement potential, and designing solutions to increase efficiency and effectiveness
- Development of a concept for introducing automation approaches in existing tools
- Creating intranet articles as project marketing
- Responsible for project governance through reporting and resource planning in the sub-program
- Agile further development of the project method
- Gathering customer requirements (requirements engineering)
- Preparation and support of contract negotiations (7-year term, budget of over 500 million)
Stanislaus Stelle
Last position:
Security Consultant at Rohde & Schwarz AG at Star Labs GmbH
- Worked on FPGA enhanced network encryption device with secure boot, TPM2.0 and smart card integration for BSI approved usage with Post Quantum Cryptography
- Developed and audited Linux drivers
- Collaborated using GitLab, Gerrit, Confluence and Jira
- Technologies: C, C++, Secure Boot
Yannick Tessa
Last position:
Cloud Architect at Anonymous
- Implementation of Infrastructure as Code (IaC) with Terraform to ensure a scalable, repeatable, and secure Azure infrastructure
- Implementation and optimization of CI/CD pipelines with Azure DevOps
- Management of container and server environments and AKS
Pierre Gronau
Last position:
Ansible Automation, Windows Third Level Support at DB InfraGO AG
- PRISMA project
- Ansible automation
- Windows third level support for Windows NT, Windows 2000, Windows 2013, Windows 2016, Windows 2019
Fabian Flock
Last position:
OT Security Champion Europe at FCS Flock Consulting Services
- Conducted OT security assessments at European manufacturing facilities
- Analyzed and improved IT security processes and infrastructure
- Revised SOC processes in conjunction with the internal SOC team
- Conducted OT incident training and tabletop exercises
- Facilitated C-level workshops to align European OT security strategy
- Evaluated regulatory changes related to NIS2 and their relevance to the client
Christian Gebhardt
Last position:
Deputy Chief Information Security Officer at Gothaer Solutions GmbH
- Deputy lead of the 10-member information security management team in a highly regulated environment (DORA, VAIT, BAIT)
- Direct reporting lines to the CIO of the Gothaer Group and the management board of Gothaer Solutions
- Regular member of the Group Risk Committee and the Compliance Committee
- Managing and coordinating information security processes within the company and with IT service providers
- Leading task forces for handling information security incidents
- Contributing to IT emergency and business continuity management
Discover over 15,000 top freelancers
Statistics of experts using Public Key Infrastructure
Aggregated from the professional profiles of matched freelancers.
Experience
15 years (Germany: 25 years)
Position duration
1.8 years (Germany: 1.9 years)
Positions per freelancer
21 (Germany: 18)
Top business areas
Information Technology, Operations, Project Management
Top industries
Information Technology, Government and Administration, Aerospace and Defense
Certification focus areas
Information Technology, Audit, Product Development
Certifications per freelancer
8 (Germany: 6)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 98%)
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Cologne are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Cologne using Public Key Infrastructure
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
PKI basics
Public Key Infrastructure, or PKI, is the trust layer behind encrypted connections and signed digital identities. It is used to issue, validate, renew, and revoke certificates for users, servers, devices, and services. Strong work here keeps authentication and data exchange reliable.
Where it is used
- TLS certificates for websites, APIs, and internal services
- S/MIME for secure email
- Device and client authentication
- Code signing and signing workflows
- VPN, Wi-Fi, and remote access trust
Core ecosystem
A typical PKI setup includes certificate authorities, registration processes, certificate policies, and revocation checks through CRLs or OCSP. Specialists also work with HSMs, Microsoft AD CS, EJBCA, OpenSSL, and cloud certificate services. The right setup depends on the trust model and the systems that consume it.
When companies bring help
Teams usually look for freelance expertise when certificates are expiring, trust chains are broken, or a new platform needs a clean rollout. Cologne companies often need support that fits local IT teams, security groups, and hybrid environments. Remote work is common, but on-site sessions help during audits, migration planning, or incident recovery.
What strong specialists do
Strong professionals do more than issue certificates. They design naming and trust structures, set renewal and revocation rules, automate certificate delivery, and reduce manual work. They also know how to document the lifecycle so operations teams can keep it running.
Signs you need PKI expertise
- Certificate outages or failed renewals
- Unclear CA ownership or trust paths
- Manual certificate handling across many systems
- New security requirements for apps, users, or devices
- Need for PKI migration, cleanup, or hardening
Frequently asked questions
Questions about Public Key Infrastructure? Start with the answers below.
Public Key Infrastructure creates and manages the certificates that let systems trust each other. It supports encrypted connections, signed identities, and revocation when a certificate is no longer valid. In practice, it keeps TLS, email signing, and device authentication working as intended.
PKI is the full trust system, not just the storage of certificates. It includes the certificate authority, issuance rules, revocation, validation, and the policies behind them. Certificate management is one part of that wider model.
A strong Public Key Infrastructure setup often involves OpenSSL, Microsoft AD CS, EJBCA, HSMs, and cloud certificate services. The exact stack depends on whether the environment is on-premises, hybrid, or cloud-heavy. Specialists should also understand CRLs, OCSP, and certificate automation.
A PKI project needs someone who has handled real trust chains, renewals, and revocation issues before. If the work includes migration, automation, or hardware security modules, you want deeper practical experience. For a small certificate rollout, a focused specialist may be enough.
Bring in Public Key Infrastructure expertise when certificates are failing, a migration is coming up, or the current setup is too manual. Freelancers are also useful for audits, cleanup after a legacy rollout, or redesigning trust for new services. That support can reduce risk without adding long-term overhead.
Most PKI work can be done remotely because the key tasks are design, review, automation, and coordination. On-site time in Cologne can help when teams need workshop-style planning, access to internal systems, or faster incident handling. Many projects use a mix of both.
Look for someone who can explain certificate lifecycle, trust anchors, revocation, and automation in plain language. A good Public Key Infrastructure specialist also thinks about operations, not just issuance. Ask for examples of migrations, expiry prevention, and recovery from broken trust paths.
Good PKI professionals usually know TLS, identity and access management, scripting, Linux or Windows administration, and security operations. For many projects, experience with automation and infrastructure tooling matters just as much as certificate theory. Communication with security and platform teams is also important.
The average hourly rate of freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects is 135 €, which corresponds to a daily rate of about 1,080 € based on an 8-hour working day.
On average, freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects have 15 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects are German (100%), English (100%), and French (50%).
The most common industries among freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects are Information Technology (100%), Government and Administration (67%), and Aerospace and Defense (50%).
The most common business areas among freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects are Information Technology (100%), Operations (83%), and Project Management (83%).
Main locations of FRATCH Experts, who have recently used Public Key Infrastructure
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Hamburg 
Munich 
Frankfurt 
Stuttgart Request a free demo
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Philipp Thomaschewski
FRATCH CEO
