OpenSSL Experts in Germany
matched in minutes from over 15,000 CVsHire experts who secure TLS connections, manage X.509 certificates and integrate cryptographic functions into Linux services, APIs and embedded products. FRATCH precisely matches you with vetted, available freelancers who can start quickly.
Meet FRATCH Experts in Germany, who have recently used OpenSSL
Lino G.
Last position:
Senior Data Scientist at VinFast Germany GmbH
- Led strategic software development of fusion algorithms for precise object tracking, trajectory prediction, and environment modeling based on multimodal sensor data (e.g., camera, LiDAR, radar, GNSS, IMU)
- Developed and implemented navigation algorithms for autonomous vehicles, including path planning, obstacle avoidance, and sensor fusion of visual, inertial, and distance-based sensor sources
- Automated extraction and training processes with CI/CD
- Developed and optimized data pipelines and processes in Microsoft Azure using Apache Spark, Databricks, and PySpark
- Developed and optimized embedded software for automotive control units
- Designed latency-critical software for real-time control in robotic systems with RTOS (freeRTOS, SAFERTOS)
- Used the Vector toolchain (CANdela, DaVinci, CANoe) for configuration and diagnostics
- Optimized existing data pipelines and processes (ETL, data warehouse, SQL)
- Developed and trained machine learning models using PyTorch
- Created deep-learning-based object detection and visual SLAM algorithms, trained on combined data from camera, LiDAR, and IMU sensors
- Implemented computer vision algorithms for object detection and classification in robotic systems using OpenCV and YOLO, utilizing synchronized image and depth data
- Implemented behavior-based control systems for autonomous robots using ROS2 Behavior Trees
- Performed testing, release, and integration of sensor fusion algorithms into automotive production programs
- Ensured adherence to proper software development processes and safety standards to guarantee high data quality (MISRA, ISO 26262, ASPICE)
Oliver O.
Last position:
Embedded Software Architect at Automotive supplier
Stellar SR6 G7 line, 32-bit Arm® Cortex®-R52+ MCU.
- MISRA-C, C99, Greenhills ARM compiler
- Dassault AUTOSAR Builder
- EB Tresos
- Sparx Enterprise Architect 16.1
- VS Code
- Python xml, lxml, NumPy and Pandas
ISO 26262, ISO 21434, hypervisor, key management, HSM. Tooling & automation. LieberLieber LemonTree + Sparx EA. Jira, Confluence, SharePoint. Git/Github. DevOps through Jenkins & Conan.
Frank B.
Last position:
System Engineer at Frequentis Comsoft
- Migrate company software to RHEL10
- Development in Bash, Python, C, Ansible
Florian W.
Last position:
Software Engineer at micimo GmbH
- Developing a professional scheduler for organizations with specific detailed requirements
- Evaluating different existing software solutions
- Creating a list of technical requirements
- Implementing these requirements
- Selected technologies: WebDAV, CalDAV, Rust, Baikal, OAuth, Keycloak
Alexander S.
Last position:
AI Consultant for AI Voice Bot System at Rudolf Hörmann GmbH & Co.KG
- Consultant for system architecture, AI agents & integration, coach for data & process logic, Graph-RAG approaches, security and data protection.
- On-premise AI solutions with high compliance and performance requirements.
- Architecture decisions, operational setup, strategic prioritization & deployment.
- Technologies: LiveKit JS SDK, LiveKit Agents, Web Audio API, JS, AudioWorklet, Loki, vLLM, Zscaler, Docker, Neo4j, MySQL, Python.
- Models: GPT-OSS 20B, Whisper large v3 turbo, Qwen3-TTS.
Michael K.
Last position:
DevOps, Linux Administrator, Infrastructure, Security at ERGO / ITErgo
- Installation, planning, maintenance and further development of the server farm in the area of hardware and software
- Migration of live systems with minimized downtime
- Processing tickets and changes in daily business
- Documentation of changes and processes in Confluence
- Test runs in the development environment
- Configuration and administration of Linux systems
- Configuration and administration of backup systems (Dell Networker, DataDomain)
- Administration of the Checkpoint firewall
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
Yannis V.
Last position:
Tutor at GFU Cyrus AG
- Unreal Engine, Unity, Virtual Reality, Augmented Reality, PHP, React, Vue, Laravel, Node.js, Flutter, Git, TypeScript, JavaScript, HTML
- Unreal Engine 5 basics
- Development of augmented reality applications with Unity
- Software documentation
- and much more
Ronald T.
Last position:
Product Owner at Dataport AöR
- Setting up and growing the business unit
- Stakeholder management
- Conducting and facilitating workshops to gather requirements
- Requirements analysis and solution design
- Backlog management
- Project planning and management
- Resource planning
Tamás N.
Last position:
JAVA development for thermal printer test program at GeBE Elektronik und Feinwerktechnik GmbH
JAVA development for thermal printer test program
Further development of the free thermal printer test program in Java 1.8 AWT and Swing
Creating new plugins for sensor feedback using a real-time bar chart
Using multiple printer languages for USB, UDP, TCP and RS232 communication
Improving usability and responsiveness with threads and string buffering
Querying and displaying network configuration
Converting and processing hex data from printer responses
Advanced study of servomotors and USB bus
Enumerating available USB ports from the Windows Registry, retrieving additional information via PowerShell, parsing and listing all in a Java list box
Fixing reported database errors
Detecting if the printer driver is installed and recognizing physically connected devices
Migration to Windows 11
Handling customer tickets as part of support in C++ and Qt6
Writing CMake scripts
Compiling STM32 printer firmware with CMake and managing the process in FileMaker Pro
Technologies: Eclipse, Java 1.8, AWT, Swing, RS232, USB, TCP, UDP, PowerShell, servomotor technology, Windows 10 and Windows 11, WSL 2.4, Ubuntu Linux, CMake, Qt6, FileMaker Pro
Predrag P.
Last position:
Test Developer | Test Automator at CreditReform
Technologies: Java 25, Selenium, Insomnia, SSO, GitLab, Jenkins, Docker, Kubernetes, Jira, IntelliJ, Nexus, Oracle, MariaDB, Spring Boot, Grafana, Concept Board, Vue.js, OpenAPI, Kotlin. Implementation, maintenance, and extension of automated end-to-end regression tests for UI and API interfaces. Appropriate and targeted test automation across multiple software products, including Java-based Windows applications. Automating business processes with Selenium, reset jobs, and DB import jobs, as well as creating test concepts, test case descriptions, and structured bug reporting.
Peter K.
Last position:
Hardware and Software Developer / Project Manager at Anonymer Kunde
- Development of control units for the automotive industry incl. embedded software
- CAN bus, Vector Tools, CANoe
- Support of the development process according to ISO 26262
- Ensuring cyber security standards:
- Key exchange (PKI) between vehicle and control units
- Hardware Security Module (HSM)
- Communication with external service providers (international)
- Development (PCB) of measuring adapters, statistical analysis of sensors
- IoT and embedded software development, backend administration
Dietrich C.
Last position:
Linux Systems Engineer at Personal Projects and Further Training
- Skills: ACLs, Android, Ansible, Apache, Backup, Bash, BindFS, Modern C++, CFEngine, ClusterSSH, CSS, CUPS, Debian, DHCP, DNS, dovecot, exim4, Firewall, FUSE, GIMP, Git, gnupg, HTML, IMAP, IPv4, Kerberos, LDAP, LineageOS, Linux, Mercurial, NAT, Networking, NFSv4, OpenPGP, OpenSSH, OpenSSL, OpenVPN, PHP, pxelinux, Python, RAID, Responsive Web Design, Routing, Shorewall, SMTP, SSHFS, SSL/TLS, systemd, TFTP, UPS, VPN, X11, XMPP
Daniel W.
Last position:
Web Developer and Linux System Administrator at Freelancer
- Consultation on setting up a web server with Apache2 and PHP FPM and an email server with Postfix and Dovecot for Learn4good Ltd.
- Programmed website under-construction.bermudafunk.org in collaboration with a designer and client for bermuda.funk Freies Radio Rhein-Neckar e.V.
- Consultation and network setup on-site including switches, routers, Wi-Fi, network monitoring, firewalls, and installation of sFirm banking software for The Swiss Quality Consulting GmbH
- Consultation on website management and development, email migration from Outlook to cPanel, image optimization, and setting up Square payments for The JABA Group Ltd.
- MS365 consultation, email setup, and document synchronization for PK reno GmbH
- Development and integration of WooCommerce plugins, B2B shop setup, and custom shipping label export for Nurso GmbH
- Minor changes implementation for existing Kirby system for Julia Rautenhaus
- Analysis and fixing of WordPress website after broken updates for Alina Frey
- Linux server hardening, updates, and throughput optimization for 3proxy servers for Lietparkas UAB
- Malware removal from hacked WordPress website for Timo Horn
- Cold email outreach system setup with Postfix and Dovecot and script development for Aman Ketebo
- Customized Docker container creation based on AlmaLinux with ImageMagick 7 and consultation on Docker installation for Henry Hook
- Plesk hosting environment management, code fixes, external supplier integration, and content support for First Class Corporation
- Shopify theme customization, feature development, and payment integration consultation for Youro GmbH
- Intel camera support on Ubuntu after upgrade for Making stories with a lesson
- NginX configuration support on Windows Servers for a NodeJS application for ARMBRUSTER empiric it
- Competitor email verification mechanism analysis for Casey Monaghan
- Plugin development and API connector to Inswitch for freelance website payments for Mediaquotes
- Private XMPP server setup on Raspberry Pi for Antonio Codespoti
- WordPress website recovery after broken plugin update for A & R Tennis
- Microsoft account and Office/Outlook migration support for Prof. Dr. Hanns-Ferdinand Müller
- Customization and performance optimization of client websites for sk.design
- VPN configuration and hacked server cleanup for Xisio Informationssysteme GmbH
- PeerTube server setup and maintenance for Lupin Vondosky
- Lightweight WordPress booking solution programming tailored to client needs for AP Online Marketing
- Code refactoring, bug fixing, and business/technical consultation for RentAfrika
- SellYourSaas setup and deployment infrastructure configuration for I-Motion SARL
- Server, email, GitLab, project management, password management software, and VPNs setup and maintenance for Markus Sattler
- Custom development for over 10 WordPress projects for TOGEMAXX media & webdesign
- WooCommerce shop setup and FTP supplier product import development for SERVOMED GmbH
- Open-source contributions to Whonix components, iptables to nftables migration, shutdown inhibition investigation, and IPv6 support addition for ENCRYPTED SUPPORT LP
- Custom feature development, performance optimization, update management, email delivery support, plugin bug fixes, and translations for KU Europe GmbH
- Custom plugin/theme development, server infrastructure management, support for 100+ WordPress websites, API connector development, deployment script setup, VPN configuration, DNS, email, and web hosting support for giftGRÜN GmbH
- Server setup, web and email hosting migration, and website maintenance and development for Eisbaden.de
- Custom WordPress and Shopify development for EcomPlus GmbH
- Hacked website recovery and hosting migration for Be Brave gUG
- Finalization of development tasks left incomplete by another developer for Medicare Consulting GmbH
- Recovery of unbootable hacked server for SK-Software, Entwicklung & Beratung
Hobby projects:
- Development and running of a web chat application
- Development and running of an email service
- Development and running of a darknet link list
- Development and running of a darknet web hosting platform
- Code contributions to open source projects such as LMMS, Audacity, and Ubuntu
Matthias W.
Last position:
Self-employed at maweos GmbH
Discover over 15,000 top freelancers
Statistics of experts using OpenSSL
Aggregated from the professional profiles of matched freelancers.
Experience
22 years
Position duration
3.7 years
Positions per freelancer
16
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Manufacturing, Healthcare
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
87%
Master's degree or higher
53%
Doctorate
27%
Certifications per freelancer
2
Most common languages
German, English, Spanish
Speak two or more languages
100%
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 Germany 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 Germany using OpenSSL
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.
OpenSSL 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 (95%)
- Manufacturing (52%)
- Healthcare (43%)
- Telecommunication (43%)
- Automotive (38%)
- Education (38%)
- Aerospace and Defense (29%)
- Energy (29%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What OpenSSL Does
OpenSSL is an open-source toolkit and library for Transport Layer Security, cryptographic operations and certificate handling. It supports secure communication between browsers, APIs, services, devices and internal systems. Its command-line tools also help teams inspect certificates, create keys and troubleshoot handshakes.
Core Capabilities
OpenSSL covers symmetric and asymmetric encryption, hashing, digital signatures and public key infrastructure. Strong professionals work with libssl for secure protocols and libcrypto for cryptographic primitives. They also understand protocol negotiation, trust chains, private-key protection and secure defaults.
Ecosystem And Tooling
OpenSSL commonly sits alongside Linux, web servers, reverse proxies, service meshes, programming-language bindings and certificate authorities. Experts use its command-line interface to test endpoints, inspect certificate chains and reproduce TLS errors. They may also work with PKCS formats, PEM files, hardware security modules and automation for certificate renewal.
Where It Runs
Companies use OpenSSL to protect websites, APIs, databases, messaging systems, VPNs and machine-to-machine connections. Typical assignments include:
- Configure TLS on web servers, proxies and application gateways
- Generate, deploy and rotate certificates and private keys
- Diagnose handshake, cipher and trust-store failures
- Add cryptographic features to software and embedded devices
When Expertise Helps
Freelance expertise is valuable during a certificate migration, protocol upgrade, security review or incident involving failed encryption. It also helps when teams must remove legacy algorithms, support mutual TLS or connect systems with different trust models. In Germany, remote collaboration is common, while regulated or hardware-focused environments may require on-site coordination and clear technical documentation.
What Strong Experts Bring
The best professionals treat OpenSSL as part of a complete security design rather than a drop-in fix. They can read handshake traces, assess certificate authority models, review key storage and explain risks to application and infrastructure teams. They test compatibility across clients and services, automate repeatable changes and document recovery steps without exposing secrets.
Frequently asked questions
What clients ask us most about OpenSSL — answered in short.
OpenSSL is used to establish TLS connections, encrypt data, create digital signatures and manage certificates and keys. It can secure web services, APIs, VPNs, databases, messaging systems and embedded devices. Its command-line tools are also useful for testing endpoints and investigating certificate problems.
OpenSSL is a broad, widely supported toolkit with a stable command-line interface and extensive ecosystem support. LibreSSL focuses on a simpler, security-oriented codebase, while BoringSSL is maintained for specific large-scale software environments and is not intended as a general-purpose drop-in choice. The right option depends on compatibility, support expectations and the target platform.
A strong OpenSSL expert usually understands TLS, X.509 certificates, public key infrastructure, Linux networking and certificate authorities. Experience with web servers, reverse proxies, programming-language bindings, containers and hardware security modules can also be important. Secure key storage and automated certificate renewal are useful complementary skills.
The required depth depends on the risk and scope of the work. A certificate replacement may need focused operational knowledge, while a custom protocol integration, cryptographic review or migration away from legacy algorithms requires deeper experience with TLS internals and application architecture. Look for evidence of comparable systems and clear security reasoning.
Yes, many OpenSSL tasks can be completed remotely through secure access, documentation and controlled test environments. On-site work may be useful where hardware security modules, isolated networks or regulated operational procedures are involved. German-language communication can help in local teams, but technical documentation and collaboration can also be handled in English.
Ask the OpenSSL expert to explain certificate validation, trust stores, key protection, protocol versions and failure handling. Quality work includes reproducible tests, safe rotation procedures, current cryptographic choices and documentation that does not expose private material. A review should also cover clients and services that depend on the configuration.
OpenSSL is useful when a project needs broad platform support, direct control over certificates and cryptographic functions, or compatibility with existing infrastructure. Higher-level libraries can reduce configuration risk for ordinary application connections. The choice should reflect the required control, language ecosystem and responsibility for secure defaults.
Common OpenSSL mistakes include disabling certificate verification, accepting obsolete protocols, mishandling private keys and assuming a successful connection proves correct identity validation. Teams also overlook trust-store differences, incomplete certificate chains and renewal procedures. Experienced professionals test failure cases as carefully as successful handshakes.
The average hourly rate of freelancers in Germany who have used OpenSSL in their recent projects is 99 €, which corresponds to a daily rate of about 793 € based on an 8-hour working day.
Of the freelancers in Germany who have used OpenSSL in their recent projects, 87% hold at least a Bachelor's degree, 53% hold at least a Master's degree, and 27% hold a doctorate.
On average, freelancers in Germany who have used OpenSSL in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 3.7 years.
The most common languages among freelancers in Germany who have used OpenSSL in their recent projects are German (100%), English (100%), and Spanish (29%).
The most common industries among freelancers in Germany who have used OpenSSL in their recent projects are Information Technology (95%), Manufacturing (52%), and Healthcare (43%).
The most common business areas among freelancers in Germany who have used OpenSSL in their recent projects are Information Technology (100%), Product Development (95%), and Quality Assurance (71%).
Main locations of FRATCH Experts, who have recently used OpenSSL
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 Request a free demo
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Philipp Thomaschewski
FRATCH CEO
