Your eMobility Engineering Partner for EV Charging Systems That Work
We integrate OCPP, build embedded charging firmware, and validate interoperability so your EV infrastructure ships on time and runs in production.
Clemios is an eMobility software engineering partner delivering EV charging, OCPP, embedded, and test-ready systems through dedicated engineering teams for German and EU companies.
FlexCharge.OCPP Architecture
6-Layer Modular Engineering Asset, Reusable Across Projects
ENGINEERING ASSET · NOT A PRODUCTLifecycle & Update Hooks
Boot/shutdown handling · Update management · Controlled restarts & recovery
Diagnostics & Logging
Structured logging/metrics · Fault reporting · Field issue reproducibility
Hardware Abstraction
Drivers · I/O adapters · Vendor-specific isolation · Capability-based APIs
Security & Certificates
TLS session handling · Certificate lifecycle · Policy/compliance enforcement
Communication Layer
Transport/session handling · Message encoding/decoding · Retry logic
Protocol Core
Message routing · State handling · Profile support · Device model management
What We Do
eMobility and EV Charging
OCPP integration, backend connectivity, and protocol validation for production charging systems.
Learn more →Firmware and Embedded Systems
Production-grade firmware for charging controllers, gateways, and industrial embedded targets.
Learn more →Dedicated Engineering Teams
Integrated remote engineers managed from Germany and delivered from Cameroon.
Learn more →QA, Test and Validation
Interoperability testing, OCPP conformance preparation, and field validation for charging deployments.
Learn more →
Stack vendors build stacks.
We make EV charging systems work in real deployments.
We complement protocol stack vendors. We do not compete with them. We make their technology work in real deployments.
Delivered at production scale
Engineering in Action
Selected examples from real deployments
OCPP Integration for a German Charger OEM
A DC fast charger required OCPP 2.0.1 integration across two firmware variants and three backend systems. The challenge: achieving conformance without delaying an existing production timeline.
Significantly faster commissioning vs. previous generation
Embedded Test Automation for a Healthcare Device Manufacturer
Safety-critical MCU firmware required verification across CAN bus, temperature compensation, and EEPROM integrity. Manual testing could not scale with release frequency. A CI-gated automated pipeline replaced the bottleneck.
~85% reduction in manual test effort (estimated)
Communication Protocol Fix for an Industrial Systems Integrator
Intermittent data loss in a multi-device Modbus RTU network. The root cause was timing drift under load. Resolution required deterministic task scheduling and time synchronisation across all nodes.
Zero data loss after deployment
Engineering Asset
FlexCharge.OCPP (Our Delivery Accelerator)
A modular, production-grade OCPP implementation that accelerates every project we deliver. Six architectural layers, from transport to business logic, purpose-built for real charger hardware and backend systems.
- Reusable across projects
- OCPP 2.0.1 actively implemented
- OCPP 2.1 in development
- Designed for integration, not resale
FlexCharge.OCPP Architecture
6-Layer Modular Engineering Asset, Reusable Across Projects
ENGINEERING ASSET · NOT A PRODUCTLifecycle & Update Hooks
Boot/shutdown handling · Update management · Controlled restarts & recovery
Diagnostics & Logging
Structured logging/metrics · Fault reporting · Field issue reproducibility
Hardware Abstraction
Drivers · I/O adapters · Vendor-specific isolation · Capability-based APIs
Security & Certificates
TLS session handling · Certificate lifecycle · Policy/compliance enforcement
Communication Layer
Transport/session handling · Message encoding/decoding · Retry logic
Protocol Core
Message routing · State handling · Profile support · Device model management
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Engineers Trained Through Our Programme
Two cohorts. 100% employment rate. 0% voluntary dropout. 90% retention in remote engineering roles. Our growing programme spans 5 specialisations, including eMobility, embedded systems, AI-assisted development, and cybersecurity.
In academic partnership with Universite des Montagnes, Cameroon.
Engineering Academy Programme →How We Engage
Engagement Models
Three engagement structures sized to your deployment scope. Commercial terms are defined during scoping.
Pilot
Early deployments and pilots
Best for
Pilot rollouts, early production deployments, defined-scope programmes
Delivery Scope
- OCPP 2.0.1 and 2.1 integration iOCPP IntegrationThe open protocol standard for communication between charging stations and backend systems. We integrate both current (2.0.1) and next-gen (2.1) versions.
- Monitoring, diagnostics, and remote operational support iOperational SupportOngoing care for your deployment: performance monitoring, diagnostics, hands-on issue triage, and remote guidance when problems arise.
- AI modules available as add-ons iAI Add-onsOptional intelligent modules for predictive maintenance, load management, and data analytics. Activate only what you need.
Support
Email support, 48 h response
Programme
Scaled deployments with dedicated engineering capacity
Best for
OEM programmes, sustained rollouts, multi-site deployments
Delivery Scope
- Pilot scope extended with deeper integration and lifecycle support iExtended IntegrationDeeper customisation of the OCPP integration for your specific charger hardware, backend systems, and business logic.
- Operational support for complex deployment scenarios
- Dedicated engineering capacity assigned for programme delivery iEngineering CapacityDedicated engineering time for change requests, adaptations, and field issues. Capacity defined during scoping.
Support
Email + phone support, 32 h response
Partnership
Large-scale infrastructure with individual SLA and governance
Best for
Large-scale deployments, high availability requirements, bespoke integration and governance
Delivery Scope
- Dedicated account and delivery ownership iDedicated AccountA single named point of contact for all your technical and commercial matters, from onboarding through ongoing operations.
- Custom integration scope and change management
- Individual SLA and support processes iIndividual SLAA custom service-level agreement with committed response times, resolution targets, and escalation paths defined per programme.
- Additional modules activated as required by the programme
Support
Individual SLA + dedicated account manager
All engagement models include conformance testing. Commercial terms, SLAs, and delivery scope are confirmed during scoping. Structured for the European market.
Industry Alignment
Standards We Build On
We align our engineering practices with the standards bodies and academic institutions shaping EV charging interoperability and engineering excellence in Europe.
Open Charge Alliance (OCA)
Member since 2026
Université des Montagnes
Academic partner
Ready to Build EV Charging Systems That Work?
Our engineers are standing by. Whether you need OCPP integration, embedded firmware, or a dedicated engineering team, we deliver from day one.