Responsibilities

Wireless & Protocol Validation

Validate BLE (GATT, GAP, pairing/bonding) and Wi-Fi provisioning, roaming, and co-existence

Test MQTT delivery, QoS levels, and AWS IoT Core integration

Validate Matter commissioning and device interoperability

Verify SPI, I2C, UART driver behaviour and edge cases

OTA & Bootloader

Validate OTA flows via MCUboot and TI OAD — including rollback and interrupted update scenarios

Verify firmware signature checks and anti-rollback protections in the secure boot chain

Security Validation

Test secure boot chain, TrustZone key storage, and secure element access controls

Execute anti-tamper scenarios and assess alignment with UL 2900 and NIST IoT guidelines

Power & Performance

Measure power consumption across sleep, idle, active, and radio-on states

Validate battery life projections and RTOS task timing under load

Hardware Lab & Automation

Execute tests on physical TI, Nordic, STM, Renesas, and Silicon Labs targets using JTAG/SWD and logic analysers

Capture BLE sniffer and Wireshark traces for protocol validation

Develop Python automation scripts integrated into Jenkins and AWS CodePipelines

Requirements

Languages & Frameworks





Python —robust experience in programming with Python and preferably in test automation scripts.

C/C++ — test harness and driver-level work

Experience in firmware development using FreeRTOS, TI RTOS — task scheduling and interrupt handling concepts

Wireless & Connectivity

BLE — GATT, GAP, pairing, bonding, advertising

Wi-Fi 802.11 — provisioning, roaming, co-existence testing

MQTT, Matter — protocol-level validation experience

SPI, I2C, UART — wired protocol debugging with logic analysers

Hardware & Debug Tools

Hands-on experience with TI, Nordic Semiconductor, STMicro, Renesas, or Silicon Labs platforms

JTAG/SWD debuggers, logic analysers, BLE sniffers, Wireshark

MCUboot, TI OAD — OTA and bootloader validation

GCC, TI Clang toolchains

Pay: ₹1,505,122.41 - ₹1,792,758.72 per year

Application Question(s)

- How many years experience with Python and in test automation scripts.

How many years experience in BLE — GATT, GAP, pairing, bonding, advertising Wi-Fi 802.11 — provisioning, roaming, co-existence testing

How many years experience in MQTT, Matter — protocol-level validation experience

How many years experience in Hardware & Debug Tools and which all tools

Work Location: In person

📌 Firmware Validation Engineer (Thiruvananthapuram)
🏢 Ezft
📍 Thiruvananthapuram