OCPP Experts in Germany
to connect charging systems with vetted, available freelancers matched by AIHire experts who integrate charging stations, backend systems and roaming services with OCPP, while handling protocol versions, security and interoperability. Get a precise match with vetted, available freelancers quickly.
Meet FRATCH Experts in Germany, who have recently used OCPP
Wael M.
Last position:
Test Manager at Schwarz IT
- Design, planning, and test case analysis
- Integration testing
- Coordination of UAT in the lab and on site
- Creation of HW and SW test catalogs
- Communication of test results from REST services with the SAP team
- Support for branches in the EU until rollout
- Coordination of defect management and SW updates with the involved vendors
- Checking the configuration of the charging stations in the backend software for different countries
- Continuous reporting of the quality status to project management
- Documentation of the user manual in English and German
- Tools: Confluence, be.Energised, OCPP Postman, OPI, CCV (payone.elavon), Excel, it4you
Simon S.
Last position:
Home Charging Portfolio Project Manager at OEM
- Developing a strategy for the home charging portfolio of a leading German vehicle manufacturer
- Determining requirements for the charging infrastructure
- Deriving product recommendations for the components
- Developing an offering strategy for future charging equipment
- Aligning product requirements with the manufacturer's brands
- Designing supplier sourcing and selection
Nikhil K.
Last position:
Head of Product (Contract) at illuminem
- Leading product strategy and platform development for B2B sustainability solutions.
Igor J.
Last position:
Software Engineer - OCPP Charge Point at dezony GmbH
Integrated latest hardware revision including RFID edition and established cloud communication using OCPP1.6
Developed a versatile system for seamless communication, monitoring, and control with various backend solutions to improve user charging experience
Technologies: TypeScript, JavaScript, Node.js, GitLab CI/CD, gRPC, OCPP1.6
Sebastián K.
Last position:
Smart Charging at Mercedes-Benz, MBTI
Agile software development in an interdisciplinary environment
Cross-team collaboration to achieve important milestones
Independently developing new and improving existing features
Estimation, refinement, implementation, and presentation
Finding solution ideas, analyzing problems, rolling out bug fixes
Writing automated tests, manual testing, log and error analysis
Ensuring high availability, fault tolerance, and scalability of the production environment
Rolling out releases and multi-stage infrastructure
Setting up alerts and monitoring
Pair programming, code reviews, documentation
On-call duty, 3rd level support
Event-Driven Architecture, Clean Code, Hexagonal Architecture
Microservices based on Go (Gin), Java 21 (Spring Boot 3), Python (FastAPI)
Terraform/OpenTofu, KQL, SQL, JSON, REST, Helm, ArgoCD, AzureCLI, K9s, OAuth2
Postgres, Redis, Kafka, Azure EventHub, Kubernetes, nginx, Ingress
AppInsights, LogAnalytics, OpenTelemetry, Datadog, OpenAPI 3, Swagger
Azure DataExplorer, Storage, KeyVault, Container Registry, Azure Functions,…
Junit5/Jupiter, testify, RestAssured, Docker Compose, Wiremock
IntelliJ, Scrum, Kanban, Teams, Confluence, OpsGenie, Arc42
GitHub CI/CD, GitLab CI/CD, Azure DevOps
EV charging protocols (EVSE, OCPP, V1G, V2G)
Matthias M.
Last position:
Founder at CaseOS Low-Code Platform
Discover over 15,000 top freelancers
Statistics of experts using OCPP
Aggregated from the professional profiles of matched freelancers.
Experience
18 years
Position duration
2.7 years
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Automotive, Energy
Bachelor's degree or higher
100%
Master's degree or higher
20%
Certifications per freelancer
1
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 OCPP
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.
OCPP 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%)
- Automotive (83%)
- Energy (67%)
- Retail (50%)
- Banking and Finance (33%)
- Manufacturing (33%)
- Media and Entertainment (33%)
- Government and Administration (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Charging Protocol
OCPP, short for Open Charge Point Protocol, is an open communication standard between electric vehicle charging stations and a central management system. It lets operators monitor stations, manage sessions, receive status updates and apply remote commands without locking the infrastructure to one vendor.
Core Versions
OCPP 1.6 remains common in deployed charging networks, while OCPP 2.0.1 supports richer device management, transaction handling, security and smart charging workflows. Strong specialists understand message models, feature profiles, version differences and the migration risks between existing installations and newer systems.
Ecosystem and Tools
OCPP work connects several technical layers:
- Charge points, embedded firmware and station controllers
- Central systems, APIs, databases and monitoring interfaces
- Load management, reservations, pricing and roaming services
- TLS, certificates, identity management and secure WebSocket transport
Testing often combines protocol simulators, device logs, automated message checks and real charging sessions. Specialists may also work with OCPI, ISO 15118, Modbus, MQTT or vendor-specific interfaces where charging networks exchange data with other systems.
Typical Projects
Companies bring in OCPP expertise when launching or extending public, workplace, fleet or residential charging services. Typical deliverables include station onboarding, remote diagnostics, firmware coordination, smart charging logic, billing events and integrations with energy or mobility platforms.
In Germany, projects may involve distributed sites, field technicians and hardware partners, so clear documentation and reliable remote coordination matter. On-site work can still be useful for commissioning stations, reproducing faults and validating behavior under real network conditions.
When to Hire
Freelance support is valuable when a team faces recurring connection drops, inconsistent station behavior or difficult vendor integrations. It also helps when an operator needs to validate an OCPP implementation before production, modernize an OCPP 1.6 estate or prepare a controlled move toward OCPP 2.0.1.
- Investigate rejected messages and incomplete charging sessions
- Define acceptance tests for new charge point models
- Connect central systems to external mobility services
- Review security, observability and operational handover
Strong Specialists
The strongest professionals combine protocol knowledge with practical charging operations. They can read raw OCPP traffic, trace a session across station and backend, distinguish a protocol issue from a network or firmware fault, and explain the finding to product and field teams.
Look for experience with the relevant OCPP version, WebSocket behavior, certificates, asynchronous events and automated testing. For German projects, language expectations and access to sites or hardware should be agreed early, especially when remote analysis must be followed by on-site validation.
Frequently asked questions
Curious about OCPP? Here are the answers that come up again and again.
OCPP is used to exchange commands, status information, charging data and fault messages between electric vehicle charging stations and a central management system. It supports tasks such as starting or stopping sessions, monitoring availability, updating configuration and coordinating smart charging.
OCPP 1.6 is widely deployed and provides the core communication model needed for charge point operations. OCPP 2.0.1 offers a broader information model, stronger security options, improved device management and more detailed support for smart charging, but migration can require changes on both the station and backend sides.
OCPP work often benefits from knowledge of WebSockets, TLS certificates, REST APIs, cloud operations and automated integration testing. Depending on the project, useful adjacent skills include OCPI, ISO 15118, Modbus, MQTT, embedded systems and observability for distributed charging networks.
OCPP expertise should match the project risk rather than a generic experience label. A simple simulator integration may need protocol and API knowledge, while a live network usually calls for someone who has traced charging sessions, handled device differences, tested recovery behavior and supported production operations.
OCPP projects are often suitable for remote collaboration because logs, protocol traffic, backend code and simulators can be reviewed online. On-site work in Germany may still be needed for commissioning, hardware testing or faults that only appear with a particular station, modem or local installation.
OCPP improves interoperability, but support is not automatically identical across all charging stations. Vendors may implement different protocol versions, optional features or proprietary extensions, so a specialist should verify supported messages, error handling, security behavior and real-device compatibility before integration.
A strong OCPP professional can explain a complete charging session from the station through the central system and identify where failures occur. Ask for examples of protocol testing, version-specific integrations, certificate handling, monitoring and documented acceptance criteria rather than relying only on familiarity with the acronym.
An OCPP freelancer may deliver a charge point integration, protocol adapter, simulator tests, message validation, monitoring rules or a migration plan between protocol versions. The exact output depends on the system, but it should include clear documentation, reproducible test results and guidance for operating the integration after handover.
The average hourly rate of freelancers in Germany who have used OCPP in their recent projects is 110 €, which corresponds to a daily rate of about 877 € based on an 8-hour working day.
Of the freelancers in Germany who have used OCPP in their recent projects, 100% hold at least a Bachelor's degree and 20% hold at least a Master's degree.
On average, freelancers in Germany who have used OCPP in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 2.7 years.
The most common languages among freelancers in Germany who have used OCPP in their recent projects are German (100%), English (100%), and French (17%).
The most common industries among freelancers in Germany who have used OCPP in their recent projects are Information Technology (100%), Automotive (83%), and Energy (67%).
The most common business areas among freelancers in Germany who have used OCPP in their recent projects are Information Technology (100%), Product Development (100%), and Operations (67%).
Main locations of FRATCH Experts, who have recently used OCPP
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
