Public Key Infrastructure Experts in Stuttgart
, matched in minutes with vetted, available freelancersHire experts who design certificate architectures, automate certificate lifecycle management and secure devices, applications and APIs with X.509 and PKI standards. FRATCH connects you quickly and precisely with vetted, available freelancers for your security project.
Meet FRATCH Experts in Stuttgart, who have recently used Public Key Infrastructure
Will O.
Last position:
Solution Architect at Polizei Behörde Stuttgart
Designed a migration strategy for WLS applications to BKA Cloud and Stack IT
Created a hybrid cloud for internal testing and development with Kubernetes
Transformed the IT landscape from an outdated monolithic architecture to a cloud-based architecture
Integrated new CI/CD processes using Azure Pipelines
Quadrupled the processing throughput for personnel security checks
Migrated personnel security screening applications to Docker-based applications
Implemented CI/deployment pipelines using Azure DevOps
Environment: Java Springboot, Kubernetes, Oracle Weblogic, OpenID, Camunda, JUnit, TOGAF
Lothar H.
Last position:
Solution Manager for the investigation PoC and exchange and refinement of an existing cloud and IoT power plant control system at Shell AG and NEXT Kraftwerke GmbH
- Investigation PoC and exchange and refinement of an existing cloud and IoT power plant control solution for certificate management of renewable energy power plants (solar, wind, biomass and others) of the largest European renewable energy power plant operator in this field, including investigation of the IoT devices used in the field and their integration and network connection with the aim of automated PKI key management.
- Messaging with Kubernetes for large API-connected enterprise applications
- Risk and Attack Vector Analysis, Software Quality & Bug Assessments
- Agile Workload Scheduling via Jira & ConJluence
- Evaluation of message streams Pub/Sub for MQ and KaJka.
- Various tests with “best design approaches” regarding resilience patterns such as Circuit Breaker Designs, Throughput Measurement and Monitoring, Bulkhead Governors - for robust EA design
- Integration of API Management with IBMs API Connect to Kubernetes - for agnostic Microservices API Management Designs. Google Apigee
- Solution Health Check Approaches for Load Burst Situations + Remedy
- Research and investigation of available potential subcontractors in the coordinating role as Solution Manager. CIS20 Controls.
- Dread and Stride Security Assessments.
Alexander Z.
Last position:
Fullstack Developer and DevOps Engineer at Freelancer
- Developing the infrastructure and improving existing infrastructure: Jenkins, Gitlab Pipeline, OpenShift, Docker, Helm Chart, Kubernetes, Artifactory, CodePipeline, CodeArtifact, Python
- Documenting solutions in Jira/Confluence
- Supporting other colleagues in different technical areas
George O.
Last position:
IT Senior Consultant at Data Group
- IT Senior Consultant (bank infrastructure, Active Directory, Azure, security, PKI)
- Planning, design, and implementation of cloud solutions based on Microsoft Azure / M365
- Teams, M365, and cloud services
- Vulnerabilities, threats, attacks
- Security analysis, security policy, security architecture
- Conducting meetings and presentations at various management levels
- Organizing and leading team meetings to improve internal communication
- Tools: PowerShell, Active Directory, GPO, DNS, DHCP, scripting
Albert F.
Last position:
Lead Product Owner at CMBlu Energy AG
- Lead Product Owner for 4 development teams
- Leading and coordinating a greenfield project with parallel implementation of core components by independent teams; managing dependencies and resources
- Establishing a data lakehouse approach, including analysis of data volumes and future requirements as part of a cloud migration (best-of-breed approach)
- Responsible for requirements analysis, selection, and piloting of a LIMS/ELN system, supported by advising decision-makers and managing external vendors
- Introducing and managing an OpenWeb UI and Azure OpenAI-based RAG system to support knowledge extraction and data-driven analyses
- Setting up, configuring, and managing Jira projects, as well as developing project-specific workflows and automations
- Implementing classic Scrum processes with all ceremonies and taking on the Scrum Master role for all involved teams
- Assisting in hiring through interviews and assessments from a product owner's perspective
- Making key architectural decisions, including selecting the platform for the data lakehouse (Databricks) and the strategic integration of LIMS and analytics platforms
Martin F.
Last position:
IT Security Consultant at Freelance
Discover over 15,000 top freelancers
Statistics of experts using Public Key Infrastructure
Aggregated from the professional profiles of matched freelancers.
Experience
24 years
Position duration
2.2 years (Germany: 1.8 years)
Positions per freelancer
17 (Germany: 18)
Top business areas
Information Technology, Project Management, Operations
Top industries
Automotive, Information Technology, Government and Administration
Certification focus areas
Information Technology, Business Intelligence, Legal
Bachelor's degree or higher
100% (Germany: 76%)
Master's degree or higher
80% (Germany: 51%)
Certifications per freelancer
3 (Germany: 6)
Most common languages
German, English, Spanish
Speak two or more languages
100% (Germany: 99%)
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Stuttgart are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Stuttgart 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 29 Oct 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.
- Automotive (100%)
- Information Technology (100%)
- Government and Administration (83%)
- Energy (50%)
- Banking and Finance (50%)
- Insurance (50%)
- Manufacturing (50%)
- Professional Services (50%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Trust foundation
Public Key Infrastructure, commonly called PKI, creates trust between people, devices, applications and services. It uses public and private keys, digital certificates and trusted certificate authorities to verify identity, encrypt connections and support digital signatures. PKI is a security foundation for internal networks, cloud services, industrial systems and customer-facing applications.
Certificates and authorities
A PKI environment usually includes a root certificate authority, issuing authorities, registration processes and certificate repositories. Specialists work with X.509 certificates, certificate signing requests, key storage and trust stores. They define certificate policies, approval paths and renewal rules so trust remains controlled across the full certificate lifecycle.
Ecosystem and tooling
Professionals may work across enterprise, cloud and open-source tools, depending on the operating model and security requirements.
- Microsoft Active Directory Certificate Services and Group Policy
- HashiCorp Vault PKI secrets engines and automated issuance
- OpenSSL, Java keystores, hardware security modules and trust stores
- ACME-based certificate automation and TLS inspection controls
Where companies use it
PKI secures more than website traffic. It supports mutual TLS between services, VPN and Wi-Fi authentication, code signing, document signing, secure email, device identity and certificate-based access to APIs. In Stuttgart, specialists may support automotive, manufacturing, logistics and research environments where connected equipment and private networks need reliable identity controls.
When expertise matters
Companies bring in freelance PKI expertise when certificates are expiring without control, a root authority needs redesigning or a migration is moving workloads between data centres and cloud services. Specialists can also help after an audit finding, during a zero-trust programme or when device fleets require scalable identity management. Remote delivery works well for design and automation; on-site work can help with hardware security modules, plant networks and stakeholder workshops in Stuttgart.
What strong specialists deliver
Strong professionals connect cryptography with practical operations. They document trust boundaries, protect private keys, define revocation and recovery procedures, automate issuance without weakening approvals and test failure scenarios. They also understand DNS, TLS, identity and access management, Linux or Windows, cloud networking, scripting and compliance evidence. Clear runbooks and monitored renewal processes matter as much as the initial certificate design.
Frequently asked questions
Curious about Public Key Infrastructure? Here are the answers that come up again and again.
Public Key Infrastructure is used to establish trusted identities for users, devices, applications and services. It enables encryption, mutual TLS, secure remote access, code signing, document signing and certificate-based authentication.
PKI uses asymmetric keys and certificates instead of relying only on reusable passwords or shared secrets. It can provide stronger machine identity and clearer trust relationships, but it requires careful certificate issuance, renewal, revocation and private-key protection.
A strong PKI specialist usually understands TLS, X.509, identity and access management, DNS, networking and operating-system security. Experience with Active Directory Certificate Services, OpenSSL, HashiCorp Vault, cloud identity services, scripting and hardware security modules is useful when the environment is broad.
The required depth depends on the trust model, number of certificate types, device population and recovery expectations. A straightforward internal certificate service may need focused implementation expertise, while a regulated or industrial environment calls for someone who has designed authority hierarchies, key protection and operational governance.
Public Key Infrastructure work is often suitable for remote collaboration because architecture, configuration and documentation can be handled securely online. On-site involvement in Stuttgart may still help with hardware security modules, factory networks, device enrollment or workshops with local security and infrastructure teams.
Ask for examples of certificate authority design, migration planning, automation and incident recovery. Confirm that the specialist can explain private-key custody, revocation, renewal monitoring and trust-store distribution in language that security, infrastructure and application teams can all use.
A sound PKI implementation has a documented trust model, separated authority roles, protected private keys and controlled issuance. It should also include renewal alerts, revocation procedures, audit trails, tested recovery and clear ownership for every certificate class.
Frequent certificate outages, unmanaged self-signed certificates, unclear ownership or manual renewals are strong signals. A redesign is also worthwhile when a company is introducing zero trust, mutual TLS, connected devices, code signing or a cloud migration and needs consistent identity controls.
The average hourly rate of freelancers in Stuttgart, Germany who have used Public Key Infrastructure in their recent projects is 91 €, which corresponds to a daily rate of about 728 € based on an 8-hour working day.
Of the freelancers in Stuttgart, Germany who have used Public Key Infrastructure in their recent projects, 100% hold at least a Bachelor's degree and 80% hold at least a Master's degree.
On average, freelancers in Stuttgart, Germany who have used Public Key Infrastructure in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Stuttgart, Germany who have used Public Key Infrastructure in their recent projects are German (100%), English (83%), and Spanish (33%).
The most common industries among freelancers in Stuttgart, Germany who have used Public Key Infrastructure in their recent projects are Automotive (100%), Information Technology (100%), and Government and Administration (83%).
The most common business areas among freelancers in Stuttgart, Germany who have used Public Key Infrastructure in their recent projects are Information Technology (100%), Project Management (100%), and Operations (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.
Berlin 
Hamburg 
Munich 
Cologne 
Frankfurt Request a free demo
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FRATCH CEO
