Consultant / FTE - Firmware Validation

Ezzoft Technologies; Thiruvananthapuram; On-site; INR 1,000,000 - 1,800,000; Full time

Job summary

Ezzoft Technologies in India is seeking a Consultant/FTE - Firmware Validation to validate BLE and Wi-Fi protocols, OTA flows, and secure boot processes. You will test MQTT, Matter commissioning, and device interoperability while validating power and performance across multiple hardware targets.

Responsibilities include hardware lab work with TI, Nordic, STMicro, Renesas, and Silicon Labs platforms, plus Python automation and CI tooling to streamline tests.

Qualifications

• Experience with Python and test automation scripting.
• Firmware development experience with RTOS (FreeRTOS/TI RTOS).
• Hands-on hardware validation for BLE and Wi‑Fi protocols.

Responsibilities

• Validate BLE (GATT, GAP, pairing) and Wi‑Fi provisioning and roaming.
• Test MQTT delivery, QoS, and AWS IoT Core integration.
• Validate Matter commissioning and device interoperability.
• Verify SPI/I2C/UART driver behavior and edge cases.
• Validate OTA flows with MCUboot and TI OAD including rollback.
• Verify firmware signature checks and anti-rollback protections.
• Test secure boot chain and TrustZone storage access controls.
• Measure power consumption and RTOS task timing under load.
• Execute tests on TI, Nordic, STM, Renesas, or Silicon Labs targets; capture traces with BLE sniffers and Wireshark; develop Python automation in Jenkins/AWS.

Skills

Python

C/C++

Test automation

Debugging

RTOS

Tools

JTAG/SWD

BLE sniffers

Wireshark

GCC

TI Clang

Jenkins

AWS CodePipelines

Job description

Location

India - Trivandrum

Job Description

Consultant / FTE - Firmware Validation

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

Languages & Frameworks

• Python strong 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 Role & responsibilities

Screening Questions

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