Lead DC Fast Charging Systems Engineer

Allye Energy; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Allye Energy is seeking an experienced systems engineer to lead the design, integration and delivery of DC fast charging capabilities across our energy storage products. You will own the architecture from the DC bus to the vehicle coupler, coordinating with embedded software and hardware teams.

This role requires hands-on software development in C/C++, familiarity with charging protocols and interoperability testing, and strong leadership to drive field deployments and supplier engagement.

Qualifications

• Degree in electrical, electronic, control, software or systems engineering, or equivalent professional experience.
• Five to eight years of relevant engineering experience, including a period of demonstrable technical ownership.
• Direct experience of DC charging systems, on either the vehicle or the charging equipment side, taken through to production and operated with third party equipment.
• Demonstrable experience of resolving interoperability faults between independently developed systems, personally and at the level of the protocol.
• Practical competence in the design, integration and safe operation of high voltage DC systems.

Responsibilities

• Own the architecture of the charging system, from the DC bus and power conversion interface through to the vehicle coupler, including the control and communications architecture across it.
• Define the requirements and interface specifications that internal engineering teams and external suppliers work to.
• Define and document the operating envelope of the product, including supported vehicle populations, power levels, operating sequences and handled failure modes.
• Lead build, buy and partner decisions on charge controllers, protocol stacks and test equipment, and hold suppliers to the specification.
• Lead software integration for charging, working hands on and in conjunction with the embedded controls and application software teams.
• Implement, integrate and debug the charging communication stack, including the digital communication protocols governing DC charging sessions and the legacy protocols still present in the vehicle population.
• Own the control layer that maps a charging session onto the battery management and energy management systems, including power ramping, derating, thermal limits and state of charge policy.
• Implement remote management and monitoring interfaces to industry protocol, and the supporting communication interfaces for session management and diagnostics.
• Develop tooling and automation for test execution, log capture and fault analysis.
• Own the interoperability strategy for the product, including the definition and maintenance of the supported vehicle matrix and the evidence base behind it.
• Specify, procure and operate the charging test and validation capability, including vehicle and charger simulation and hardware in the loop testing.
• Plan and lead structured interoperability campaigns, including participation in recognised industry test events, and convert the results into a managed defect and improvement backlog.
• Diagnose faults at protocol and physical layer, including communication link establishment, insulation and cable verification, precharge and contactor sequencing, timeout and retry behaviour, and manufacturer specific deviations from standard.
• Own the field return and failure investigation process for charging, including on site diagnosis, reproduction, resolution and verification.
• Specify the physical charging interface, including couplers, cables, cooling strategy, cable management, ingress and impact protection, locking and temperature monitoring.
• Define the DC side protection and isolation strategy, including switching and protective devices, insulation and residual current monitoring, earthing and protective conductor continuity, and touch safety.
• Own the safety case for DC charging, including hazard analysis, failure mode and effects analysis, and shutdown and emergency stop behaviour.
• Work with mechanical engineering on physical integration, cable routing, thermal management and enclosure design.
• Ensure the product conforms to the relevant international and national standards for DC charging, electrical safety, electromagnetic compatibility and functional safety applicable in the UK and European markets.
• Support product conformity assessment and marking, and manage the technical relationship with test houses, certification bodies and notified bodies.
• Maintain a current view of the evolution of the charging standards and of emerging requirements such as automated authorisation and bidirectional operation, and advise on their implications for the product roadmap.
• Act as Allye's technical authority on charging, providing direction and guidance to engineering colleagues and to external partners, suppliers and customers.
• Produce and maintain the technical documentation set, including specifications, integration guidance, test evidence and service and troubleshooting material.
• Support commercial, product and field teams with technical input to customer requirements, deployment and after sales.

Skills

C/C++

Embedded software

Python

IP networking

Bidirectional charging

Cybersecurity

Interoperability troubleshooting

High voltage systems

Education

Degree in electrical/electronic/control/software or systems engineering

Tools

Test equipment

Vehicle/charger simulation

Version control (Git)

Job description

Allye Energy is seeking an experienced systems engineer to lead the design, integration and delivery of DC fast charging capabilities across our energy storage products. You will own the architecture from the DC bus to the vehicle coupler, coordinating with embedded software and hardware teams.

This role requires hands-on software development in C/C++, familiarity with charging protocols and interoperability testing, and strong leadership to drive field deployments and supplier engagement.