VoIP Experts in Berlin
in minutes with the power of AI and vetted freelancersHire experts who design SIP-based calling, route and secure voice traffic, and connect VoIP with contact centers, PBX systems, and cloud telephony stacks. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Berlin, who have recently used VoIP
Viktor Shcherban
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
Oliver Schulz
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
André Görst
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 Noack
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 Helmi
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 Vitanyi
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 Kortmann
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 Dania
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 Bohnsack
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: 76%)
Master's degree or higher
33% (Germany: 46%)
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 30 Aug 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
VoIP basics
VoIP, or Voice over IP, carries voice calls over IP networks instead of traditional phone lines. It is used for business telephony, contact centers, softphones, internal calling, and voice features inside apps. Strong experts know how call setup, media flow, codecs, and network quality affect the final user experience.
Common stack
- SIP signaling and session handling
- RTP media transport and codec selection
- PBX and cloud telephony setup
- Call routing, IVR, and voicemail
- NAT, firewall, and QoS tuning
These specialists often work with Asterisk, FreeSWITCH, Kamailio, and related SIP tooling. They also understand how trunking, number management, and monitoring fit into daily operations.
What companies need
Companies bring in freelance VoIP specialists when calls drop, audio quality slips, or a telephony rollout needs structure. They also help when moving from legacy phone systems to IP telephony, adding remote work support, or integrating voice into CRM and support workflows. In Berlin, this often matters for teams that need German and English collaboration across office and remote settings.
Strong specialist profile
Good professionals think beyond setup. They test call paths, inspect logs, trace packet loss, and look at latency, jitter, and codec fit. They also document dial plans, security settings, and failover options so internal teams can operate the system with less friction.
Delivery areas
VoIP work usually appears in:
- Business phone systems and PBX migrations
- Contact center and support platforms
- SIP trunk and carrier integration
- Voice features inside SaaS products
- Monitoring, troubleshooting, and hardening
These projects often need clear handover notes and careful coordination with network, security, and support teams.
Why freelancers help
Freelance VoIP experts are useful when the scope is narrow, urgent, or tied to a migration. They can review an existing setup, fix a broken integration, or design a clean deployment without long onboarding. For Berlin companies, that flexibility is valuable when local presence is helpful but the technical work can be done remotely.
Frequently asked questions
Not sure where to start with VoIP? These answers cover the essentials.
VoIP is used for business calling, contact centers, internal voice systems, and voice features inside software products. It replaces or extends traditional telephony by carrying calls over IP networks. Companies also use it for remote work, branch connectivity, and unified communications.
VoIP is the broader idea of voice over internet protocol. SIP is one of the most common signaling protocols used to set up and manage those calls, while IP telephony is a common term for the same general approach to calling over data networks. In practice, teams often need specialists who understand all three terms and how they fit together.
A strong VoIP specialist often works with Asterisk, FreeSWITCH, Kamailio, SBCs, and SIP trunks. They also handle codecs, dial plans, IVR flows, voicemail, and monitoring tools. The right mix depends on whether the project is a PBX rollout, a contact center, or voice inside an application.
Companies usually bring in a VoIP freelancer when they need focused help with a migration, a performance issue, or a new telephony rollout. It is also a good fit when in-house teams know the business side but need deep protocol and routing expertise. Freelancers can move quickly without long ramp-up time.
The needed depth depends on the task, but VoIP work is rarely just basic configuration. Simple add-on tasks may need a specialist with solid SIP and network knowledge, while migrations and carrier integrations call for stronger troubleshooting and architecture skills. The key is proven work on similar call flows and failure cases.
Many VoIP tasks can be done remotely, especially call routing, SIP configuration, documentation, and troubleshooting with shared logs. On-site presence can help during cutovers, network checks, or when local hardware needs hands-on review. For Berlin teams, a hybrid setup is common when stakeholders are split between office and remote work.
Look for someone who can explain call flow clearly, isolate faults fast, and document decisions well. A strong VoIP professional understands network quality, security, codecs, and failover, not just basic setup. Good signs are clean handover notes, practical troubleshooting steps, and stable results under real call load.
VoIP work often overlaps with networking, Linux, security, and cloud telephony. Many projects also need CRM integration, contact center logic, scripting, and observability skills. The best specialists can talk to both telecom and software teams without losing detail.
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
