VoIP Experts in Berlin
matched in minutes from over 15,000 CVsHire experts who design SIP-based phone systems, connect PBX platforms such as Asterisk and 3CX, and improve call routing, quality and security. FRATCH matches you quickly and precisely with vetted, available freelancers for your VoIP project.
Meet FRATCH Experts in Berlin, who have recently used VoIP
Oliver S.
Last position:
SAP Sub-Project Lead (SCM, MM, EWM) at Brunata Wärmemesser Hagen GmbH & Co KG
- Responsibility for time, budget and quality targets of the sub-project
- Creation and maintenance of the sub-project plan including dependencies to FI, CO, PP, SD
- Definition of work packages, resource planning and progress monitoring
- Risk and change management within module scope
- Analysis of as-is processes in procurement, logistics and warehouse management
- Design of to-be processes according to SAP standard (EWM warehouse processes such as goods receipt, put-away, picking, goods issue)
- Coordination with key users and specialist departments
- Support for interface development with external warehouse systems and supplier portals
- Organization of test data, error tracking and test documentation
- Support for deployment preparation and key user training
- Participation in the cutover plan (data migration, go-live preparation)
- Support of the department during the hypercare phase after go-live
- Assistance in mapping EWM core processes
- Management of external service providers
- Use of Jira, Confluence, Signavio, MS Teams, Aqua ALM
Viktor S.
Last position:
AI Engineer (Freelance) at Empion
Enterprise AI content categorization and AI-powered web research.
- Built multi-LLM evaluation framework with annotated data
- Iterated LLM error rates based on annotated datasets
- Implemented AI-powered web research pipeline Stack: LLM, evals, OpenRouter, Python, Node.js, TypeScript, React
André G.
Last position:
IT Consulting Project Management / Engineering Subproject Management at T-Systems (on assignment for government agencies)
- Projects for federal networks (NdB).
- CR management, EoL change requests, design and documentation according to ITSCM.
- Data center planning.
- Project management and engineering subproject management.
- Software development for virtual server environments according to BSI.
Albrecht N.
Last position:
Senior Project Manager IT at HAYS Technology Solutions GmbH
- Leasing, lifecycle and process management for Apple iPhones, maintenance and expansion of the MDM system, coordination of leasing, device integration into DEP and MDM, followed by a rollout and hardware swap process, plus a BYOD and Android option
- Migration of the IT ticket system from ManageEngine ServiceDesk Plus to Atlassian Jira Service Management: project management, definition of ticket types, seamless execution according to a detailed timeline, user communication, decommissioning of the old system
- Project lead: SAP interface in workforce management to automate reading of working hours
- Sub-project lead for inventory software EZO AssetSonar: demand management, software selection, procurement
Dawood H.
Last position:
Senior Technical Project Manager at Ionos SE
- Led a company wide program to achieve C5 attestation and ITGS certification, enabling eligibility for governmental tenders and strengthening enterprise compliance.
- Coordinated cross-functional workstreams across engineering, IT security, legal, HR, sales, and operations, ensuring alignment on requirements, timelines, and risks.
- Optimized processes and refined documentation to meet C5/ITGS standards, improving audit readiness and internal control maturity.
- Managed cloud infrastructure initiatives, including Managed Kubernetes deployments, and AWS-based enhancements for scalability and resilience.
- Designed and rolled out scalable partner and merchant onboarding frameworks across European markets, improving time-to-activation and operational consistency.
- Delivered regular program updates, risk assessments to the CTO & global leadership.
- Served as Agile Coach, introducing Agile/Scrum/SAFe practices and driving continuous improvement across distributed delivery teams.
Alexander V.
Last position:
Product Owner at FI-TS
- Rebuilding an existing cloud solution with Kubernetes, Terraform, Ansible, Prometheus, Grafana, GitLab, Argo CD and PostgreSQL
- Coordinating and managing external partners and service providers
- Ensuring service delivery on time and on budget with budget responsibility
- Integrating the cloud solution with external public clouds (AWS)
- Setting up and defining processes and workflows in Jira and Confluence
- Product management of software development for automation and self-service in CI/CD DevOps mode
- Agile software development with Kanban and Scrum in various development teams
- Single point of contact for key customers in respective projects
- Creating and aligning the product backlog with stakeholders from sales, architecture, development teams, marketing, management and customers
- Migrating existing customers to the AWS cloud as product owner
- Creating and aligning a product roadmap with internal and external stakeholders
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
Shivansh D.
Last position:
Product Manager at Es Magico
- Launched an AI marketplace aggregator leveraging deep knowledge of e-commerce and marketplaces that reduced product listing time by 65% and improved compliance rates by 70% for a US based client
- Implemented AI-based content generation and image validation features based on marketplace-specific SEO principles and selling policies, eliminating up to 8 hours of manual work per week
- Created an intelligent inventory system with demand forecasting algorithms that decreased stockouts by 30% while optimizing cross-platform inventory allocation across multiple sales channels
- Engineered a conversational AI sales agent to achieve <600ms response latency and >92% intent classification accuracy, ensuring natural, human-like interactions across 10+ Indian languages
- Integrated persona-based conversation flows that improved engagement and upsell conversions by 28% using LLMs, SLMs, RAG and the latest STT and TTS technologies
- Delivered an enterprise-grade real estate CRM and lead management system that reduced lead management effort by 60% through automated workflows
- Architected role-based access controls after conducting 50+ stakeholder interviews to identify critical security needs
- Managed sprint execution with 90% on-time feature delivery while maintaining technical quality standards
- Developed a global VOIP application from concept to launch by defining product strategy based on competitive analysis for an Australian client
- Reduced onboarding friction by 60% through UX optimization, resulting in 25% higher user conversion rates
- Executed data-driven prioritization that accelerated time-to-market while balancing technical constraints
Frank B.
Last position:
Software Engineer at Freelancer
- Freelance software engineer focusing on backend (Python/Django) and frontend (VueJS).
Discover over 15,000 top freelancers
Statistics of experts using VoIP
Aggregated from the professional profiles of matched freelancers.
Experience
25 years (Germany: 27 years)
Position duration
2.3 years (Germany: 2.2 years)
Positions per freelancer
17 (Germany: 18)
Top business areas
Information Technology, Project Management, Operations
Top industries
Information Technology, Education, Healthcare
Certification focus areas
Information Technology, Project Management, Human Resources
Bachelor's degree or higher
78% (Germany: 77%)
Master's degree or higher
33% (Germany: 47%)
Doctorate
11% (Germany: 8%)
Certifications per freelancer
4 (Germany: 5)
Most common languages
German, English, Arabic
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 Berlin 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 Berlin using VoIP
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.
VoIP 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%)
- Education (44%)
- Healthcare (44%)
- Professional Services (44%)
- Government and Administration (44%)
- Retail (44%)
- Automotive (33%)
- Manufacturing (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What VoIP does
Voice over Internet Protocol, or VoIP, carries voice calls over IP networks instead of traditional telephone lines. Companies use it for business telephony, softphones, video-enabled meetings, contact centres and integrated communications. It can support office phones, mobile users and remote teams through one managed system.
Systems and standards
VoIP projects often combine SIP trunks, IP phones, session border controllers and cloud or on-premises PBX systems. Common platforms include Asterisk, FreePBX, 3CX, Microsoft Teams Phone and other unified communications services. Strong knowledge of codecs, RTP, DNS, QoS, NAT and firewall rules is essential for stable calls.
Typical project work
- Plan a new business phone system and number strategy
- Configure SIP trunks, extensions, queues, IVR and call recording
- Integrate telephony with CRM, helpdesk and collaboration tools
- Diagnose jitter, packet loss, latency and one-way audio
- Migrate users from legacy PBX infrastructure to VoIP
When expertise matters
Companies bring in freelance VoIP expertise during telephony migrations, office moves, contact-centre launches and rapid changes to remote work. Specialist support is also useful when call quality is inconsistent, carrier integration is difficult or internal teams need a secure design. Berlin companies may need professionals who can collaborate on-site with office and network teams or work remotely across locations.
Skills around telephony
Effective VoIP work reaches beyond handset configuration. It may involve Linux, cloud networking, VLANs, firewalls, identity management, monitoring, automation and API integrations. Professionals should understand emergency calling requirements, data protection considerations, access controls and operational procedures relevant to the countries where the system runs.
What strong experts deliver
A strong specialist documents call flows, network assumptions, carrier dependencies and recovery steps before making changes. They test with real devices and representative traffic, separate endpoint issues from network faults, and monitor quality after launch. Clear rollback plans, clean configuration and practical handover materials help the system remain reliable after the engagement ends.
Frequently asked questions
Not sure where to start with VoIP? These answers cover the essentials.
VoIP is used for internet-based business calls, internal extensions, call queues, interactive voice menus, contact centres and softphone access. It can also connect telephony with CRM systems, collaboration tools and customer support workflows.
Voice over Internet Protocol uses IP networks for calls, while a traditional PBX may depend on dedicated telephone lines or legacy on-premises hardware. VoIP usually offers more flexible remote access and integrations, but it requires reliable network performance, security controls and careful carrier planning.
A strong VoIP specialist may work with Asterisk, FreePBX, 3CX, SIP providers, Microsoft Teams Phone and session border controllers. Useful adjacent skills include Linux, VLANs, firewalls, DNS, QoS, cloud networking, REST APIs and CRM integration.
The right level depends on scope, not a fixed number of years. A small SIP or softphone setup may need focused configuration skills, while a multi-site migration or contact-centre rollout calls for proven experience with routing, security, carrier coordination, testing and rollback planning.
VoIP work is often suitable for remote collaboration because configuration, monitoring and troubleshooting can be performed through secure access. On-site time may still help with handset deployment, cabling, network testing or coordination with office teams in Berlin.
Common causes include packet loss, jitter, latency, overloaded links, incorrect QoS, codec issues, faulty handsets and firewall or NAT problems. A capable VoIP professional measures the network, traces the call path and separates endpoint, LAN, WAN and carrier faults before changing configuration.
Ask for examples of comparable migrations, SIP or PBX integrations and difficult call-quality investigations. Look for clear diagrams, test plans, security awareness, documentation and the ability to explain trade-offs in terms that network, operations and business teams can use.
Freelancers working with VoIP should clarify the carrier, number portability, emergency calling, recording, retention and data protection requirements before implementation. Berlin engagements may also involve German-language coordination with local teams, alongside remote work with international stakeholders.
The average hourly rate of freelancers in Berlin, Germany who have used VoIP in their recent projects is 103 €, which corresponds to a daily rate of about 821 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used VoIP in their recent projects, 78% hold at least a Bachelor's degree, 33% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Berlin, Germany who have used VoIP in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Berlin, Germany who have used VoIP in their recent projects are German (100%), English (100%), and Arabic (11%).
The most common industries among freelancers in Berlin, Germany who have used VoIP in their recent projects are Information Technology (100%), Education (44%), and Healthcare (44%).
The most common business areas among freelancers in Berlin, Germany who have used VoIP in their recent projects are Information Technology (100%), Project Management (100%), and Operations (89%).
Main locations of FRATCH Experts, who have recently used VoIP
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.
Munich 
Frankfurt Request a free demo
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Philipp Thomaschewski
FRATCH CEO
