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Custom Engineering

Custom Engineering Built for Real-World EV Charging Networks

We design, build, and operate tailored EV charging platforms that scale — from CitrineOS-based CSMS deployments to fully custom dashboards, applications, and operator tools. S44 Energy partners with operators, OEMs, and infrastructure providers to deliver software that works in production, not just in pilots.

EV charging networks don’t succeed on hardware alone. They succeed when the software behind them is reliable, adaptable, and designed for the realities of operating in production. That’s where our custom engineering engagements come in.

At S44 Energy, we build on top of CitrineOS, the leading open-source foundation for Charging Station Management Systems (CSMS). By leveraging CitrineOS, we accelerate development while ensuring your platform is:

  • Full support of OCPP and OCPI protocols
  • Interoperable across all OCPP charger vendors
  • Extensible for future growth
  • Built for long-term operational reliability

Rather than reinventing core infrastructure, we focus engineering effort where it matters most: the workflows, tools, and integrations that make your network unique.Our custom engagements often include tailored CSMS development that make your network unique and create proprietary IP for our clients, such as charger onboarding, session monitoring, diagnostics, reporting, and smart charging support — all aligned to real operational needs.

Beyond the CSMS layer, we also deliver fully custom solutions that support your business and your users, including:

  • Network dashboards for uptime, utilization, and performance visibility
  • Custom operator tools designed around your internal workflows
  • Customer-facing UIs and applications for fleets, drivers, or site hosts
  • Integrations across payments, utilities, fleet platforms, and energy systems

Every engagement is structured to deliver production outcomes, not prototypes. We work collaboratively from discovery through deployment, ensuring that what we build can scale with your network.

Explore our Case Studies to see S44 solutions in action.
View Case Studies
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Jason Cardosi
Head of Sales & Partnerships
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