GSM Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used GSM
Rudolf Eggelbusch
Last position:
Datacenter Engineer, Network & Security Administrator at International insurance group
Operation and further development of the network and security infrastructure.
Monitoring, analysis and resolution of network and security incidents.
Cross-department collaboration with other specialist teams for operations, further development and reporting.
Firewall vulnerability analysis.
Firewall rule approvals.
Troubleshooting IP communication issues in the network and firewall infrastructure.
Security-critical IT infrastructure, processing of personal data, compliance with legal regulations.
Products: Palo Alto Networks Firewalls, Cisco ACI, Checkpoint Firewalls, F5
Technologies: SDN, SDWAN, Cisco EPIC, Cisco ACI
Karlheinz Götz
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
Marko Oršolić
Last position:
System Administrator in a 6-person Team at FITS
- System administration of FreeBSD 11, 12 and 13.1 in a secure cloud software solution
- Administration of proxy servers for FITS and its clients, banks and state banks
- Administration of secure internet solutions
- Administration of secure mail solutions and mail gateways
- Administration of Apache 2.4 web servers
- Planning and maintenance of servers and network components in FNT Command
- Incident, change and ticket handling, especially troubleshooting network issues using Splunk and ARS
- Troubleshooting and log file analysis using Splunk Enterprise
- Monitoring with Nagios
- Ordering, provisioning and installation of certificates on Apache web servers, Nginx web servers and load balancers
- Hardware: HP ProLiant DL380 Gen 9 and 10, Cisco Catalyst
- Software: FreeBSD 11, 12 and 13.2, FNT Command, shell scripts, MySQL databases, ServiceNow, ARS, Splunk Enterprise 8.15
Andreas Fischer
Last position:
Project Manager & Portfolio Owner for Infrastructure (Automotive) at MHP Management- und IT-Beratung GmbH
- Overall coordination of service providers for all infrastructure topics at a production site being set up in Baden-Württemberg
- Design and finding solutions for internet connectivity, building office communication networks, setting up WLAN in production and administration buildings, IP address management, password policies, time tracking, access control systems, backup strategies, emergency power planning, operating concepts, cost planning, event management, workplace setup including laptop/mobile phones/telephony, remote support, print servers
- Selecting suitable external service providers and planning to meet needs for spare parts, repairs, on-site service, network and workplace support including on-site system replacement by providers
- Choosing suitable external service providers for facility management and building technology (fiber optic connections, data center infrastructure, cable ducts etc.)
- Coordination with clients and service providers
- Escalation management, schedule control
- On-site presence for service meetings and managing service providers
Ola Van Dunen
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
Ivaylo Piskov
Last position:
Senior Project / Rollout Manager at Deutsche Glasfaser GmbH
- Manage and coordinate site design, deployment, new Core/DWDM implementation, and optimization of a robust and scalable fiber optic network infrastructure
- Create high-level design (HLD) and low-level design (LLD) documents for core and aggregation network
- Define scope of network elements and establish operational and deployment guidelines
- Determine core-site strategy, integrate voice and ISP systems, and swap core components of 60 existing sites
- Develop site design, execute proof of concept, and deploy additional core sites
Andre Kholodov
Last position:
Nearshore Engagement Manager at EnBW AG
- Built strong awareness of nearshoring within the company
- Engagement Manager in the Nearshore Competence Center
- Responsible for nearshore consulting, partner screening and technical onboarding, designing and implementing cooperation scenarios, change management, stakeholder management, participating in steering committees and collaborating with IT and business units
- Tools used: Microsoft Office 365, Microsoft Teams, Azure DevOps, Microsoft SharePoint, Conceptboard
- Key results: established a nearshoring strategy, successfully identified and implemented outsourcing partnerships, executed change management and stakeholder management at a top level
Michael Eilers
Last position:
Software Developer at Continental
- Supported a telematics component in the automotive sector with SELinux and open-source license management.
- Products: SELinux, iMX8, ScanCode.
- Skills: Linux, firmware development, Python.
Youssef Ahmed Rawy Baghdady
Last position:
Test Automation Engineer at IAV GmbH
- Executed standard/complex test cases using ECU-test and Python, improving test throughput by 30%.
- Performed validation and execution of ECU test cases on HiL benches for ADAS to ensure functional quality before release.
- Worked closely with customers to align test activities with project requirements and provide regular validation updates.
- Coordinated with subcontractors to track defects, ensure timely issue resolution, and maintain test quality.
- Ensured testbench stability and maintenance before executing test plans, identifying and resolving issues proactively.
- Developed Python-based automation scripts for reporting and workflow automation.
- Managed test issues and documentation via Jira in coordination with QA and development teams.
- Used CANPE for measuring signals of CAN, FlexRay, Ethernet, and IP using Vector CAN tools.
Vivian Yue
Last position:
Global Sourcing Manager, Team Lead of Six at Corsair (Fanatec)
- Lead strategic sourcing for BMW GT3/GT4, Bentley GT3, Porsche 911 GT3, and McLaren GT3 racing/steering wheels and quick-release systems; own end-to-end COGS and raw-material spend across electronics and mechanical BOMs; oversee €65M annual spend and 20-25 programs per year.
- Directly responsible for procurement of servo motor and structural parts (CNC, die-cast, injection, extrusion, stamping, anodizing) managing €30M annual spend.
- Collaborate with internal R&D teams and PMO to identify and analyze project requirements; run early ability to analyze bills of materials and technical drawings/schematics to align material strategy before RFQ.
- Lead all procurement-related functions within the project, including supplier sourcing, negotiation, contract management, supplier documentation management, and material management for assigned projects.
- Ensure supply continuity during project execution via dual-sourcing, lead-time/buffer planning, and escalation routines with suppliers and operations.
- Monitor change activities during the transition from sample to production-ready (EVT/DVT -> PVT -> MP) with engineering and suppliers to protect the company from potential supplier claims (scope, tooling, obsolescence) and keep commercial terms under control.
- Quickly and accurately identify problems and report on status and required actions to stakeholders (senior and C-level); drive root-cause actions with clear owners and timelines until closure.
Rupesh Kumar Sendge
Last position:
IT Baseline Compliance Consultant at Consultant
- Baseline compliance verification against MAS audit findings
- Building technical architecture concept for 30 technologies to build hardening standard artifacts
- Identifying and building automation possibilities for given technologies based on CIS
- Building the standard baseline configuration based on internal security standard
- Responsible for building Cloud Native Application Protection Platform (CNAPP) architecture artifacts based on Azure cloud platform
- Responsible for RFQ and RFP for different CNAPP solutions (Qualys Total Cloud, CrowdStrike, Azure Security Center)
- Supporting compliance verification and validation via automated scripts for a sample population of IT devices and instances
- Responsible for complete vulnerability management lifecycle using Nexpose, remediation, reporting and integration of results with Splunk, HPSM and Tableau
- Audit support for MAS
Thorsten Gerlach
Last position:
Freelance Software Developer at Insurance company, Munich, Germany
- Implemented modernization measures to optimize processes in the insurance domain
- Replaced old interfaces with newer APIs
- Merged several smaller solutions into one main solution to improve builds and increase efficiency in the development process
- Replaced the persistence solution in the backend from Telerik to NHibernate
- Created unit tests to secure the code
Jürgen Hertweck
Last position:
iOS App Development (AI-based) at Refreco GmbH
- Development of iOS apps in Swift
- AI-supported SW development using Vibe Coding with Claude Code
- Web applications through Vibe Programming
- Use of Swift, Xcode 15, Claude Code, Proxmox, GitLab, Visual Studio Code, Cursor, Doors, ClearCase
- Use of MS Project, OpenShift, Docker, Project Server, PageMaker, CRM, MS SQL Server
- SW techniques: UML, BPMN 2.0, ERD, client/server technology
Mohamad Alosman
Last position:
Systems Engineer for Network Security at Bechtle AG
- SD-WAN solution by Aruba – Swiss energy company (330 sites): design and implementation of an SD-WAN branch solution with Aruba 9004 gateways, encrypted overlay, policy-based routing, WAN load balancing, and centralized management via Aruba Central.
- LAN/WLAN & security – schools in Germany (9 sites): deployment of Aruba switches & AP-505, FortiGate 80F firewalls; setup of Checkmk monitoring, incident and change management, and secure admin access (BeyondTrust).
- Multi-site security – energy billing company (20 sites): deployment of a complete Fortinet solution (FortiGate HA cluster, FortiSwitch PoE, FortiAP), IPsec remote-access VPN via FortiClient, centralized management via FortiCloud, IntraID authentication, operations and incident management.
- Data center migration – German client: migration of data center switches (Mellanox), firewall cluster, and OfficeConnect switches to a new data center; securing configurations, implementing HA designs, testing, monitoring, and coordinated change and incident processes. Setup of two new 6300 M VSX clustered switches.
- Data center security – university hospital: implementation of a high-availability FortiGate 400F firewall cluster across three data centers; security policy design, operational support, and change/incident management.
- Enterprise campus & network access control – manufacturing company in Germany: introduction of Aruba ClearPass NAC, setup of a VSX-based switching architecture, secure WLAN access with MPSK, and integration into existing networks.
- EU client (Germany & Poland) – Sophos firewalls: operations, incident and change management of Sophos firewalls including IPsec VPN; troubleshooting and ongoing optimization of security configurations.
- Network modernization – pharmacy client in Germany: design and rollout of core and access switching (Mellanox, Aruba Instant On), migration from Sophos to Fortinet firewalls, network segmentation, and security hardening.
Erik Schmalz
Last position:
Project Manager, Subproject Manager, PMO at Martinswerk GmbH / Huber Advanced Materials
- Filled a short-term staffing gap for this project.
- Continued multiple projects and cleared documentation backlogs.
- Familiarized the support team with agile practices (self-organization, task prioritization).
- Took over project control and stakeholder management.
- Acted as the communication link between technical staff, users, and project owners.
- Served as Agile Coach for the team.
Discover over 15,000 top freelancers
Statistics of experts using GSM
Aggregated from the professional profiles of matched freelancers.
Experience
26 years
Position duration
1.9 years
Positions per freelancer
19
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Telecommunication, Manufacturing
Certification focus areas
Information Technology, Project Management, Quality Assurance
Bachelor's degree or higher
91%
Master's degree or higher
73%
Doctorate
5%
Certifications per freelancer
4
Most common languages
German, English, Spanish
Speak two or more languages
96%
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 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 GSM
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
GSM basics
GSM stands for Global System for Mobile Communications. It is the core standard behind classic 2G mobile voice, SMS, and many roaming services. Companies still need specialists for network integration, device compatibility, and systems that must stay connected on mature mobile infrastructure.
Where it is used
- Voice and SMS services for mobile subscribers
- SIM-based device connectivity and provisioning
- Roaming support across operator networks
- Machine-to-machine links and remote terminals
- Legacy systems that still depend on 2G coverage
Skills that matter
Strong GSM professionals understand radio basics, signalling, SIM behaviour, and operator interconnects. They also know how GSM fits with related standards such as GPRS, EDGE, and often UMTS or LTE in mixed environments. Clear documentation and careful troubleshooting matter as much as protocol knowledge.
Typical assignments
Teams bring in freelance expertise when they need help with network rollouts, handset or modem testing, SMS gateway issues, or migration planning away from older mobile services. In Germany, this often comes up in industrial connectivity, transport, and service environments where stable coverage and predictable behaviour matter.
Tooling and interfaces
A GSM project often touches test mobiles, modem AT commands, SIM management tools, packet capture, and operator portals. Specialists may also work with network logs, provisioning systems, and field test setups to trace call setup, registration, or message delivery problems.
What good experts deliver
Good GSM specialists find the root cause quickly and explain it in plain language. They can work with product, network, and operations teams, document changes clearly, and keep legacy services stable while supporting transitions to newer mobile technologies or hybrid setups.
Frequently asked questions
Everything clients usually want to know about GSM, in one place.
GSM is used for mobile voice, SMS, roaming, and many SIM-based connections. It also appears in legacy devices, industrial terminals, and remote systems that still rely on 2G coverage. For many teams, the work is less about the standard itself and more about keeping those services stable.
GSM is older and narrower in scope than LTE or 5G, but it still matters where voice fallback, SMS delivery, or legacy coverage is required. LTE and 5G carry more data and support newer architectures, while GSM remains important for compatibility and roaming in mature networks. A good specialist knows where to keep GSM and where to phase it out.
A strong GSM specialist usually understands SIM provisioning, radio and signalling basics, AT commands, and operator interconnects. Knowledge of GPRS, EDGE, and sometimes UMTS or LTE helps when a project spans generations of mobile networks. Debugging skills and clear documentation are also important.
Companies usually bring in GSM expertise when internal teams need help with a rollout, a persistent fault, device certification, or a migration from older mobile services. It is also common when the issue spans operators, sites, or embedded devices and needs focused troubleshooting. Freelance support works well when the task is specific and time-sensitive.
Much GSM work can be done remotely if logs, test devices, and network access are available. On-site work becomes useful for field testing, coverage checks, hardware bring-up, or issues that need access to lab equipment and secure environments. In Germany, many projects use a mix of remote analysis and on-site validation.
Look for GSM projects that show real troubleshooting, not just general telecom knowledge. Strong evidence includes work with call setup, SMS delivery, roaming, SIM handling, modem testing, or operator integration. Good specialists explain trade-offs clearly and can show how they solved a similar problem before.
GSM is still relevant when a project needs broad coverage, SMS, voice fallback, or support for existing devices that cannot be replaced quickly. It is less common for new data-heavy applications, but it remains practical in many operational settings. A specialist can help decide whether GSM should stay, be bridged, or be retired.
A GSM expert may deliver test plans, fault analyses, integration notes, coverage findings, or migration recommendations. They often document network behaviour, SIM and modem setup, and the steps needed to reproduce and fix an issue. For many teams, the most valuable output is a clear path from symptom to root cause.
The average hourly rate of freelancers in Germany who have used GSM in their recent projects is 94 €, which corresponds to a daily rate of about 754 € based on an 8-hour working day.
Of the freelancers in Germany who have used GSM in their recent projects, 91% hold at least a Bachelor's degree, 73% hold at least a Master's degree, and 5% hold a doctorate.
On average, freelancers in Germany who have used GSM in their recent projects have 26 years of professional experience, with a single engagement typically lasting around 1.9 years.
The most common languages among freelancers in Germany who have used GSM in their recent projects are German (100%), English (96%), and Spanish (25%).
The most common industries among freelancers in Germany who have used GSM in their recent projects are Information Technology (93%), Telecommunication (86%), and Manufacturing (71%).
The most common business areas among freelancers in Germany who have used GSM in their recent projects are Information Technology (96%), Product Development (82%), and Project Management (75%).
Main locations of FRATCH Experts, who have recently used GSM
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
