IPsec Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used IPsec
Julian W.
Last position:
Renewal of the Active Network Infrastructure
As part of this project, the existing active network infrastructure was modernized and made fit for the future. The goal was to introduce a powerful, secure and scalable network and WLAN infrastructure, including a Network Access Control (NAC) solution to improve network security and centralized access control.
At the beginning of the project, a comprehensive requirements analysis was carried out, taking into account the technical, operational and security-related requirements of the hospital sites. On this basis, a technical tender was prepared for new switches, WLAN access points and the NAC solution.
The successful implementation of the project established a modern, standardized and secure network infrastructure that meets the growing requirements for availability, mobility and IT security in hospital operations.
Activities:
- Supporting the tender process, including technical evaluation of offers and bidder evaluation
- Leading and managing the entire project implementation
- Coordinating the project process with internal stakeholders, business units and hospital IT
- Managing external service providers during the implementation and installation of the systems
- Monitoring the implementation, including quality control, project acceptance and defect management
- Coordinating and managing communication between hospital IT and external service providers as part of the NAC implementation
- Managing escalations in the event of technical and organizational challenges
- Ongoing budget monitoring and control of project expenses and additional costs
- Preparing decision papers for management on project changes, additional services and risks
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
Toralf C.
Last position:
IT Consultant in PKI Software Development at BWI
- Implementation of a full-stack application with Angular as frontend framework and Java as backend language
- Use of the Swagger OpenAPI specification for REST communication between frontend and backend applications
- Control of a card printer via the Nexus Card SDK framework
- Design and implementation of card management software with web interface and JavaFX module for printer monitoring
- Use of Cucumber tests for test automation and creation of test artifacts for testing outside the development environment
- Use of Wireshark for network investigations to analyze the API of a third-party product and to check the REST API of the self-developed software
Andreas Z.
Last position:
Transformation Architect / Business Analyst at IT Consulting
- Development of a comprehensive transformation model for IT departments and ITSM organizations, from operational stabilization through structuring and optimization to strategic advancement
- Design of a transformation matrix that connects development phases with the implementation activities Position, Focus, Model, Enable, Anchor and Develop
- Development of assessment, maturity and decision-making logic to determine the operational starting point, the appropriate entry point and the prioritized areas of action
- Structuring of an end-to-end approach from current-state assessment and target vision through operating model, roadmap and service modules to implementation and integration into steady-state operations
- Derivation of combinable consulting and implementation modules, including methods, deliverables, role models, governance structures and transformation paths
- Collection, structuring and prioritization of business requirements from the perspectives of IT management, service management and operational roles
- Translation of requirements into target visions, process and role models, decision criteria and traceable deliverables
Environment / Tools: ITIL 4, IT4IT, Operating Model Canvas, SIAM, maturity models Kanban
Salim C.
Last position:
Cloud / Systems Architect
- Development and introduction of operations processes
- Preparation of complete documentation packages (including incident management and operations support) to meet compliance requirements
- Introduction of a workshop on IaC (Infrastructure as Code)
- Technical consulting for the project security concept (ISMS)
- Installation and operation of Kubernetes clusters on AWS, on-prem, and Azure
- Hybrid cloud architecture design (on-prem, Hetzner, AWS)
- Analysis and troubleshooting of incidents and system outages
- Network adjustments for firewall rules, gateways, OpenVPN settings, and IPsec tunnels (pfSense)
- Technical consulting on Bitbucket, Jenkins, and GitLab CI/CD pipelines
- Consulting on Ansible deployments and infrastructure automation
- Consulting on building a scalable system in the cloud (AWS / Azure)
- Technologies / Tools: Ansible, Terraform, AWS, Azure, VPN, pfSense, Jenkins, Bitbucket, Kubernetes, GitLab Runner, ISMS, Golang, Prometheus, Grafana, S3, Lambda, RDS, ECS, Cognito, OIDC, Harbor, MinIO, Postgres, Redis, Keycloak, Ceph, Proxmox, CloudFormation, PostgreSQL, Flux CD, Hetzner, IONOS, Sonatype Nexus Repository, Entra ID, Dex IdP, Pulumi
Laurin H.
Last position:
Software Architect (Freelance) at Care4Sure
- Delivered MVP-focused full-stack architecture for a health-sector client: Vite/React frontend, backend services on Google Cloud Run, and Supabase for database plus IAM/authentication.
- Supported product requirements engineering and prioritized cost-aware workload placement, implementing browser-side/edge computation where feasible before moving logic to backend services.
Volker R.
Last position:
Architect and Senior System Administrator at International trading company
- Analysis and optimization of the VMware environment for operation in a KRITIS environment
- Planning and implementation of updates to the VMware and hardware environment in a KRITIS environment
- Set up Skyline Health Diagnostics
- Review of the existing documentation
- Training and onboarding of new internal employees
- Support with migration and upgrade projects
- Preparations for moving scripts in the virtualization environment to GitLab
- Ticket processing with Service.Now
Maher S.
Last position:
Product Development – Test Management – Rollout at Telefónica Deutschland
Participation in various projects related to the development and introduction of new telecommunications products in the mobile communications and fixed-line sectors, with a focus on 5G, wholesale and IPv6 technologies.
- Planning, coordination and execution of product development projects, particularly in the 5G and fixed-line environments
- Support for the rollout of new offerings, including test management and quality assurance
- Participation in the development of wholesale products and eSIM solutions
- Close coordination with internal departments (technology, marketing, operations) and external partners
- Use of agile tools and methods for project management and collaboration
Tools: JIRA, MS Office, MS Project
Technologies: 5G, 5G Campus Networks, Fixed Network (FixNet), IPv6, eSIM, Wholesale product development
CS-APN 5G NSA – IPv6 / Dual-Stack for B2B Customers
Ensuring the use of CS-APNs in dual-stack mode (IPv4/IPv6) in combination with MPLS VPN and IPSEC VPN.
- Project management including test planning, test coordination and go-live management
- Technical coordination for activating IPv6 functionality for B2B connections
eSIM Manager – Product Development for B2B Customers
Development of a tool for the fast and scalable provision of eSIM profiles for business customers.
- Product design and process definition for activating eSIMs on different device types (smartphones, IoT, laptops)
- Collaboration with partners to integrate the solution into existing infrastructures
eSIM Handling B2B – Blanco eSIM Process Integration
Optimization of the eSIM provisioning process through the introduction of dynamic Blanco eSIM processes.
- Definition of new processes for issuing non-activated eSIMs (Blanco) via the frontend and partner community
- Design of the integration into service and IT systems
All-IP 5G NSA – Mobile Access for B2B Internet/Voice Services
Expansion of the All-IP portfolio with mobile 5G access offering higher bandwidth for business customers. (5G Indoor Coverage).
- Project management including test management and go-live preparation
- Interface coordination for introducing Local-SIM-based solutions
5G PN – Campus Roaming / Private Networks
Development and introduction of 5G Private Network (PN) solutions with a focus on industrial applications (IIoT).
- Design and definition of business use cases
- Development of SIM/eSIM processes for 5GPN, including roaming between private and public networks
IPv6 for B2B – Introduction in Mobile and Fixed-Line Products
Introduction of IPv6 support for All-IP products and M2M services in the B2B environment.
- Product and process development for integrating IPv6 (in accordance with RIPE-554)
- Implementation for large customers such as retail chains with several thousand branches in Germany and abroad
Mustafa K.
Last position:
Senior Consultant SCCM, SCOM, SCSM, SCVMM / Software packaging at LfSt - Bavarian State Office for Taxes
- Further development of the existing SCCM 2509 implementation
- Schema extension, CAS extension
- Creating task sequences, in-place upgrade
- Patch management (WSUS)
- Security updates, feature updates
- Emergency fixes, application updates
- Incident, change, and problem management (3rd level)
- Active Directory, DNS, DHCP, GPMC
- Managing users, groups, OUs, computers
- Setting up GPOs
- Senior consultant for software packaging in an SCCM 2509 environment
- Project management ITIL standards
- Defect management
- SIT (Software Integration Test)
- SAT (Software Acceptance Test)
- UAT (User Acceptance Test)
- Adjusting Windows 11 25H2 client deployment
- Secunet SINA management systems administrator
- Secunet SINA Workstation 3.5.4
- Maintenance and configuration work in SINA management
- Importing and adjusting IPsec policies
- Retrieving and documenting status, firmware versions, and configurations of individual SINA devices
- Consulting and implementation in fault and incident management
- Implementation of documentation and rollout of new software versions
- Creating software packages based on PowerShell App Deployment Toolkit, Flexera AdminStudio for the W11 64-bit platform and Server 2025 / 2022
- Number of PC systems: approx. 1,850.
Label: PowerShell, VBS, Batch scripting
Label: SCCM 2503, Windows 11 64 Bit, Windows 2025 Server, Windows 2022 Server, Windows 2019 Server
Mustafa K.
Last position:
Senior Network Design and Engineer at Helaba
Designed and specified the technical network integration of a new business critical application system (MUREX) in the capital market area in a complex interface and outsourcing environment.
Created component specifications, catalog of measures and implementation plan.
Ensured proper integration of developed results in accordance with the bank’s framework: IT compliance, IT security, change and release management.
Selected and integrated a new service provider for the bank; moved critical bank applications to the provider.
Designed, implemented and supported the new Cisco network and Fortinet security setup at the service provider data center.
Acted as technical interface between bank, service providers and consulting partners.
Supported and further developed the network and security infrastructure (clients, servers, networks); performed error analysis and implemented solutions within agreed service levels.
Analyzed and diagnosed all security and network failures, glitches and malfunctions.
Initiated continuous enhancements to guarantee efficient resource utilization and acceptable response times to users.
Provided network support in financial service organization and operational change preparation on production banking network infrastructure for both large and small projects within strict change management discipline.
Designed, defined, tested, governed and improved engineering standards.
Performed role of network architect for medium-large projects involving team resources.
Christian E.
Last position:
IT Consulting / IT Rebuild at IT Rebuild (PF)
- Analysis of requirements and the current situation
- Migration of an old domain structure and Tobit to Exchange 2019 with connection to MS365
- Review of implementation options and planning for the protection of sensitive data
- Planning with regard to BSI Grundschutz, BDSG, and DSGVO
- IT governance and IT security backtests
- Support with ERP setup and securing mail transfer
- Hyper-V 2016/2022, Microsoft Terminal Services Cluster, Microsoft Exchange 2019
- Office 365, Microsoft 365, Azure AD, Teams, Salesforce
- Cisco, Zyxel, and HP switches, Sophos firewalls/UTMs, SecurePoint
- Microsoft IIS 2022, IPv4/IPv6, Veeam, Wortmann Online Backup, NextCloud
- Services: DNS, DHCP, TCP/IP, subnetting, firewalling, routing, VoIP, group policies (GPO), SIEM, remote work, home office, high availability, failover, VLAN, PRTG
Valentin O.
Last position:
Network Architect at IT Service Provider - Public Sector
- Designed a network management strategy focused on NetDevOps principles and model-driven telemetry using YANG data models
- Conducted NETCONF/YANG workshops for L2VPN/L3VPN services over SRv6
- Automated configuration deployment in the testing environment with Ansible
- Developed end-to-end service measurement concepts with IPSLA and the Telegraf-Prometheus-Grafana stack
- Created the dual-stack architecture design (router + switch + firewall) including a detailed test plan; planned, executed, and documented acceptance tests for the management network
- Performed BSI IT baseline protection checks according to the IT-Grundschutz catalog (needs assessment, modeling, risk analysis, deriving measures)
- Protocols: SRv6, IPv6, MPLS, BGP, ISIS, OSPF, NETCONF/YANG, model-driven telemetry, IPSLA
- Systems: Cisco Crosswork Network Controller, SolarWinds Orion, Grafana, InfluxDB, Telegraf, Ansible, Git
- Components: Cisco NCS router series, Cisco Catalyst switch series, Cisco Firepower firewall series
Frank B.
Last position:
System Engineer at Frequentis Comsoft
- Migrate company software to RHEL10
- Development in Bash, Python, C, Ansible
Karlheinz G.
Last position:
Consultant / Test Analyst / Supporter at Insurance office, Spaichingen
Project: Process optimization & IT support in an insurance broker office.
Project activities:
- Analysis of processes and definition of requirements
- Consulting for the implementation of a cloud solution (soho)
- Installation and verification of new infrastructure HW
- Cloud installation & configuration
- Definition and creation of use cases
- Performing user acceptance tests (UAT)
- User training / training
- IT support (cloud, PC, server, printer, network)
Label: Insurance, infrastructure, configuration, training, support
Minh Duc V.
Last position:
Senior System Engineer Network & Security at F.S. Fehrer GmbH & Co. KG
- Responsible for the configuration, maintenance, monitoring, troubleshooting, and optimization of the IT infrastructure, including Extreme Networks, SD-WAN, and Fortinet security solutions, at all international company locations in Europe and North America
- Development of a comprehensive strategic roadmap to optimize the network architecture, including VLANS, NAC, QoS, firewall configurations, VPNs, DPI, NGFW, threat intelligence, and SSL/TLS inspection
- Implementation of the OneIT strategy through the introduction of new technologies such as Cisco DNA Center, ExtremeCloud IQ, FortiOS, FortiManager, and FortiAnalyzer, which increased employee skills and the efficiency of the IT systems
- Integration of IT and OT systems to optimize the network and security architecture and improve operational efficiency
Discover over 15,000 top freelancers
Statistics of experts using IPsec
Aggregated from the professional profiles of matched freelancers.
Experience
22 years
Position duration
2.4 years
Positions per freelancer
16
Top business areas
Information Technology, Operations, Project Management
Top industries
Information Technology, Manufacturing, Automotive
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
75%
Master's degree or higher
47%
Doctorate
3%
Certifications per freelancer
5
Most common languages
German, English, French
Speak two or more languages
100%
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 Germany 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 Germany using IPsec
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.
IPsec 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 (91%)
- Manufacturing (52%)
- Automotive (50%)
- Banking and Finance (48%)
- Telecommunication (43%)
- Healthcare (37%)
- Government and Administration (33%)
- Aerospace and Defense (30%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What IPsec does
IPsec, short for Internet Protocol Security, protects IP traffic through authentication, integrity checks and encryption. It is used to connect offices, data centers, cloud networks and remote users across untrusted networks. Its controls operate at the network layer, so many applications can use the protected connection without changes.
Core building blocks
IPsec commonly uses Internet Key Exchange to negotiate security associations and keys. Experts work with IKEv2, ESP, certificates, pre-shared keys, encryption suites and tunnel or transport mode. They also understand routing, packet flow, MTU effects and firewall policies, which determine whether a tunnel remains stable in production.
Ecosystem and tooling
Implementation choices depend on the network and operating environment. Common tools and products include strongSwan, libreswan, Cisco security appliances, Palo Alto Networks, Fortinet, Linux networking and cloud VPN services from major providers. Professionals may combine these with BGP, OSPF, infrastructure as code, centralized logging and configuration management.
Where companies use it
- Connect branch offices with site-to-site VPNs
- Link on-premises networks to public cloud environments
- Provide secure access for remote users and partners
- Protect traffic between data centers and sensitive systems
- Replace or integrate with legacy private network links
IPsec appears in manufacturing, finance, healthcare, logistics and public services. In Germany, specialists may support distributed operations that need collaboration between headquarters, plants, offices and hosted infrastructure.
When freelance expertise helps
Companies bring in freelance professionals when a new tunnel must work with existing firewalls, cloud gateways or third-party networks. They also need support during migrations, outages, security reviews and network redesigns. A specialist can document dependencies, test failover, tune routing and hand over repeatable operating procedures to an internal team.
Remote collaboration suits configuration reviews, troubleshooting and documentation. On-site work can help when appliances, cabling or segmented industrial networks must be inspected directly, while clear technical English or German may matter for teams and suppliers in Germany.
What strong professionals bring
A strong IPsec professional does more than make a tunnel show as connected. They trace negotiation stages, read logs and packet captures, distinguish authentication errors from routing failures and test both directions of traffic. They apply least-privilege rules, certificate rotation, resilient designs and monitoring instead of relying on default settings.
Look for practical knowledge of IKEv2, firewall policy, NAT traversal, DNS, routing and cloud connectivity. Good specialists explain trade-offs clearly, record every assumption and leave behind a design that another team can operate safely.
Frequently asked questions
Need clarity? These are the questions we hear most often about IPsec.
IPsec is used to authenticate, encrypt and protect IP traffic across networks that cannot be fully trusted. Companies use it for site-to-site VPNs, remote access, cloud connectivity and links between data centers or partner environments.
Internet Protocol Security protects traffic at the network layer, which can cover many applications without application changes. SSL or TLS VPNs usually work closer to the application or session layer and may be easier for browser-based access, while IPsec often suits persistent network-to-network connections.
IPsec work often requires strong routing, firewall administration, DNS, NAT traversal and Linux or network-appliance knowledge. Experience with IKEv2, certificates, cloud networking, BGP or OSPF, monitoring and packet analysis is also valuable.
IPsec projects vary from a focused tunnel deployment to a complex multi-site migration. The right professional should have handled the same level of routing, firewall integration, identity management and failure testing that your environment requires, not simply configured a basic VPN.
IPSec configuration, log analysis and design reviews can often be completed remotely with controlled access, documentation and a test path. On-site collaboration in Germany may still help when physical appliances, industrial networks or change windows require direct inspection.
strongSwan and other IPsec implementations differ in configuration, logging and operational behavior, so ask for relevant examples rather than generic VPN experience. Check whether the professional can explain key exchange, routing, certificate handling, monitoring and rollback in terms your team can verify.
IPsec can show a successful negotiation while traffic still fails because of routes, firewall rules, mismatched traffic selectors, MTU issues or NAT behavior. A capable specialist checks the complete path with logs and packet captures instead of treating the tunnel status as proof that applications can communicate.
IPsec professionals demonstrate quality through a clear design, secure algorithms, tested failover and precise operational documentation. They should explain why they chose IKE settings, authentication methods, tunnel modes and monitoring signals, and show how the setup will be maintained after handover.
The average hourly rate of freelancers in Germany who have used IPsec in their recent projects is 106 €, which corresponds to a daily rate of about 848 € based on an 8-hour working day.
Of the freelancers in Germany who have used IPsec in their recent projects, 75% hold at least a Bachelor's degree, 47% hold at least a Master's degree, and 3% hold a doctorate.
On average, freelancers in Germany who have used IPsec in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Germany who have used IPsec in their recent projects are German (100%), English (100%), and French (17%).
The most common industries among freelancers in Germany who have used IPsec in their recent projects are Information Technology (91%), Manufacturing (52%), and Automotive (50%).
The most common business areas among freelancers in Germany who have used IPsec in their recent projects are Information Technology (100%), Operations (78%), and Project Management (74%).
Main locations of FRATCH Experts, who have recently used IPsec
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 Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg 
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FRATCH CEO
