Public Key Infrastructure Experts in Cologne
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Meet FRATCH Experts in Cologne, who have recently used Public Key Infrastructure
Matthias S.
Last position:
Overall Project Coordinator at Bundeswehr Informatik (BWI GmbH)
- PMO Lead Security Clearance 2 (SÜ2) verified
- Reporting to the GMN sub-program management
- System maintenance 25+
- Functional management and coordination of the Jira setup
- Preparation of decision papers (e.g. project planning, governance model, communication plans, controlling models, roles and responsibilities matrices)
- Development of program-wide knowledge management using Confluence, creation of Jira concept
- Development of an access concept for all project tools
- Analysis of existing processes, identification of improvement potential, and design of solutions to increase efficiency and effectiveness
- Development of a concept for introducing automation approaches into existing tools
- Creation of intranet articles for project marketing
- Responsible for project governance through reporting and resource planning in the sub-program
- Agile development of the project methodology
- Gathering customer requirements (Requirements Engineering)
- Preparation and support of contract negotiations (7-year term, 500+ million budget)
Jens R.
Last position:
Platform Architect & Senior Developer at Direct client, industrial measurement technology, medium-sized company
- Technical leadership across hardware, firmware, and software teams; scope: hardware/firmware team (4 people) and leadership group (5 people)
- Consolidated and documented a product family that had grown over more than 15 years and aligned it with CRA compliance — from the bare-metal I/O module to the cloud interface.
- Provided the most important customer product with the essential requirements and architecture documentation within two months — for a firmware landscape that had grown over more than 15 years. It now supports the customer’s modernization strategy.
- Established a monthly reporting line to the supervisory board and executive board within three months: nine meetings since 12/2025. The report itself is versioned and built from the CI pipeline; it is based on automatically collected activity and release data instead of assessments.
- Built a container-based CI/CD infrastructure from scratch: cross-compilation, host tests, and documentation builds in one continuous pipeline.
- Introduced declarative QA gates for DevOps and development artifacts — from the start using lefthook instead of pre-commit, executed in a dedicated container image.
Technologies used: arc42, req42, tpo42, docToolchain, PlantUML, ArchiMate, C4 model, ADR, C, C++ (GTest), CMake, Bare Metal (ARM Cortex-M3/M7), OCI containers, Jenkins, lefthook, Prometheus, Grafana, SBOM, CRA, OPC, SCADA, PLC integration, IPv6 migration, Zero Trust, Sociocracy 3.0, Cynefin
Pierre G.
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
Stanislaus S.
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 T.
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
Fabian F.
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 G.
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
12 years (Germany: 23 years)
Position duration
1.8 years (Germany: 1.7 years)
Positions per freelancer
19 (Germany: 18)
Top business areas
Information Technology, Project Management, Operations
Top industries
Information Technology, Healthcare, Manufacturing
Certification focus areas
Information Technology, Audit, Product Development
Bachelor's degree or higher
67% (Germany: 80%)
Master's degree or higher
67% (Germany: 54%)
Certifications per freelancer
8 (Germany: 5)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 99%)
Based on our profile pool as of 19 Sep 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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Public Key Infrastructure experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (100%)
- Healthcare (57%)
- Manufacturing (57%)
- Government and Administration (57%)
- Aerospace and Defense (43%)
- Energy (43%)
- Banking and Finance (43%)
- Insurance (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What PKI does
Public Key Infrastructure, or PKI, is the trust layer behind digital certificates, private keys, and public keys. It lets systems prove identity, encrypt traffic, and sign data. Teams use it to secure websites, internal services, email, devices, and software release chains.
Where it fits
- TLS certificates for web and API traffic
- S/MIME for secure email
- Device and user identity in enterprise networks
- Code signing and software trust
- VPN, Wi-Fi, and zero trust access
PKI shows up anywhere a company needs verifiable trust between systems or people.
Core stack
Strong PKI specialists work with certificate authorities, registration authorities, OCSP, CRLs, HSMs, and key lifecycle processes. They understand certificate profiles, renewal automation, revocation, and policy design. They also know how PKI connects with Active Directory, cloud identity, Linux, Windows, and network security tooling.
When to bring in help
Companies often bring in freelance PKI experts during certificate rollouts, migrations to a new CA, or audits after certificate outages. They are also useful when expired certificates, weak key handling, or manual renewals create risk. In Cologne, this work often needs smooth coordination with security, infrastructure, and compliance teams.
What good experts do
- Design clear trust hierarchies and certificate policies
- Automate issuance, renewal, and revocation
- Reduce outages caused by expired or misconfigured certs
- Harden private key storage and signing flows
- Document ownership and operational runbooks
A strong professional leaves the environment easier to run, not just working today.
Common project scope
PKI projects can include public web certificates, internal certificate services, device onboarding, email encryption, or certificate cleanup after mergers. Some specialists focus on on-prem CA stacks, others on cloud-managed trust services. Good collaboration works well both remotely and on-site when access to sensitive systems or policy discussions matters.
Frequently asked questions
Questions about Public Key Infrastructure? Start with the answers below.
Public Key Infrastructure is used to create and manage digital trust. It supports TLS certificates, secure email, device authentication, code signing, and encrypted connections between systems. In practice, it keeps identities verifiable and private keys under control.
A TLS certificate is only one part of PKI. PKI includes the certificate authorities, trust rules, renewal flow, revocation, and key management behind the certificate. If you only buy certificates without the operating model, you still face outages and trust gaps.
A company needs a Public Key Infrastructure specialist when certificates are scattered, renewals are manual, or trust decisions have become risky. They are also valuable during CA migrations, device identity projects, and after an outage caused by an expired certificate. The best time is before the incident becomes visible to users.
A PKI project often touches certificate authorities, HSMs, OCSP, CRLs, and automation around issuance and renewal. It also connects with Active Directory, Linux, Windows, cloud identity, and network access controls. The exact stack depends on whether the focus is public web trust, internal enterprise trust, or device identity.
Most Public Key Infrastructure work benefits from a specialist who has handled the full certificate lifecycle, not just installed a tool. For a small renewal task, focused expertise may be enough. For a redesign, migration, or security review, you want someone who has seen revocation, policy, and incident handling before.
Much of the PKI work can be done remotely because it is design, documentation, and controlled administration. On-site time in Cologne can help when access is sensitive, when policy discussions involve several teams, or when a migration touches local infrastructure. Many projects work best as a mix of both.
Look for clear thinking about certificate scope, ownership, renewal paths, and failure handling. A strong Public Key Infrastructure expert explains trade-offs in simple terms and can show how they prevented expiry issues, reduced manual work, or improved trust boundaries. Good answers are specific, not abstract.
A solid PKI specialist usually understands identity, network security, scripting, and operating systems. Knowledge of cloud platforms, Active Directory, HSMs, and certificate automation is especially useful. For many projects, the best fit also knows how to work with security, operations, and compliance teams.
The average hourly rate of freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects is 137 €, which corresponds to a daily rate of about 1,093 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects, 67% hold at least a Bachelor's degree and 67% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects have 12 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 (43%).
The most common industries among freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects are Information Technology (100%), Healthcare (57%), and Manufacturing (57%).
The most common business areas among freelancers in Cologne, Germany who have used Public Key Infrastructure in their recent projects are Information Technology (100%), Project Management (86%), and Operations (71%).
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 
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Philipp Thomaschewski
FRATCH CEO
