Key Responsibilities

* Maintain firmware for EV charger controllers (AC and DC fast chargers) on
ARM Cortex-M/A based platforms.
* Maintain charge communication protocols — LECCS (Level 3 DC rapid charging,
CHAdeMO-adjacent), OCPP 1.6/2.0.1 for CSMS communication, ISO 15118 (PLC-based
EV–EVSE communication, Plug & Charge), and IEC 61851 for AC charging control.
* Maintain the telematics module: cellular (4G/LTE, NB-IoT) and Wi-Fi
connectivity, MQTT/HTTPS uplinks to the cloud backend, GPS/location reporting,
and remote diagnostics.
* Implement secure OTA firmware update pipelines for chargers deployed in the
field, including rollback and fail-safe handling.
* Develop robust state machines for charging session lifecycle:
authentication, authorization, energy metering, fault handling, and session
termination.
* Debug field issues using JTAG/SWD, logic analyzers, and CAN/PLC bus traces;
work closely with hardware and power electronics teams on EMI/EMC and signal
integrity issues.
* Collaborate with the cloud/backend team to define telemetry data schemas,
remote configuration,



and fleet monitoring dashboards.
* Write unit and integration tests, contribute to CI pipelines, and maintain
firmware documentation and protocol compliance records.
* Mentor junior firmware engineers and review code for reliability, safety,
and protocol conformance.
* Own firmware end-to-end for a fast-growing charging network — from silicon
to cloud.
* Work on one of the most protocol-rich problems in embedded systems today,
spanning power electronics, networking, and telematics.
* You will be working with Small, senior team with high ownership and direct
impact on product reliability at scale.

Ideal Candidate

* 5 to 8 years of embedded firmware development in C/C++ on microcontrollers
(STM32, TI, NXP, or similar)
* Hands-on experience with EV charger communication protocols: LECCS, OCPP
(1.6/2.0.1), ISO 15118, IEC 61851, and familiarity with CHAdeMO/CCS/GB/T
charging standards.
* Strong unders

📌 Senior Engineer– Firmware Charging Infrastructure (Bengaluru)
🏢 Software
📍 Bengaluru