Senior Engineer– Firmware Charging Infrastructure

River

Bengaluru

On-site

INR 1,200,000 - 1,800,000

Full time

10 days ago

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Job summary

River is a Bengaluru-based design company building multi-utility products. We are seeking a senior embedded firmware engineer to own firmware for EV chargers, including LECCS, OCPP, ISO 15118, and IEC 61851. You will work across silicon to cloud, mentoring a small team and shaping reliability at scale.

Ideal candidates have 5–8 years in C/C++ on MCUs, experience with telematics, OTA updates, and safety standards. Join River to impact a fast-growing charging network.

Qualifications

5–8 years of embedded firmware development in C/C++ on microcontrollers.
Hands-on experience with EV charger protocols: LECCS, OCPP 1.6/2.0.1, ISO 15118, IEC 61851.
Strong knowledge of CAN, Modbus, RS-485, PLC for EV–EVSE communication.
Experience with telematics firmware: cellular modems, MQTT/HTTPS, GPS.
Knowledge of RTOS concepts and safety-critical firmware design.
Familiarity with safety/compliance standards (IEC 61851, IEC 61850, UL 2594/2202).

Responsibilities

Maintain firmware for EV charger controllers on ARM Cortex-M/A platforms.
Maintain charge communication protocols (LECCS, OCPP, ISO 15118, IEC 61851).
Maintain telematics module: cellular, GPS, MQTT/HTTPS, cloud uplinks.
Implement secure OTA firmware update pipelines with rollback.
Develop state machines for charging session lifecycle.
Debug field issues with JTAG/SWD, CAN/PLC traces; liaise with hardware team.
Collaborate with cloud/backend on telemetry schemas and fleet dashboards.
Write tests, contribute to CI, and document firmware protocols.
Mentor junior engineers and ensure protocol conformance.
Own end-to-end firmware for a growing charging network.

Skills

Embedded firmware

C/C++

MCUs (STM32/TI/NXP)

EV charging protocols

CAN/Modbus/RS-485

RTOS (FreeRTOS)

Telematics connectivity

OTA firmware updates

Embedded security/compliance

Job description

About River

River is a design company building multi-utility products. Our flagship product River Indie, #SUVofScooters, is designed to help you get things done. Engineered to be a dependable ally on your road to success. We’re a 1000+ team headquartered in Bengaluru – backed by marquee international investors, with mobility-focused funds linked to Yamaha Motors, Al-Futtaim Automotive Group, Toyota VC, Trucks Venture Capital, Mitsui & Co. Ltd, Marubeni Ventures Inc., Lowercarbon Capital, and Maniv Mobility.

About River

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 fast 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 understanding of CAN, Modbus, RS-485, and PLC (Power Line Communication, e.g. HomePlug Green PHY / QCA7000) for EV–EVSE communication.
Experience building telematics/connectivity firmware: cellular modem integration (Quectel/SIMCom/u-blox), MQTT/HTTPS/TLS, GPS, and remote monitoring or fleet‑management systems.
Solid grasp of RTOS concepts (FreeRTOS or similar) and real‑time, safety‑critical firmware design.
Familiarity with power electronics interfacing — metering ICs, relay/contactor control, ground fault detection (GFCI), and charger safety interlocks is a strong plus.
Comfortable with debugging tools (JTAG/SWD, oscilloscope, CAN/PLC analyzers) and root‑causing field failures.
Working knowledge of relevant safety and compliance standards (IEC 61851, IEC 61850, UL 2594/2202, or equivalent) is a put.
Strong communication skills and experience mentoring or leading a small firmware team.
Prior experience at an EV charging OEM, CPO (charge point operator), or automotive/EVSE supplier.
Exposure to Plug & Charge / ISO 15118-2/-20 security and certificate handling.
Experience with cloud-side OCPP backend (CSMS) integration and testing.
Familiarity with functional safety practices (ISO 26262 or IEC 61508) in an embedded context.