Company Description : HOOK is an e-bicycle conversion technology that transforms any analog bicycle into an smart electric bike within seconds, without tools, technical expertise, or permanent modification which you can use for outdoor and indoor workouts for fitness enthusiasts.

Role Description:

Experience: 0–2 years (Freshers with strong project portfolios or collegiate racing/robotics backgrounds are strongly encouraged to apply)

Notice Period: Immediate joiners only (maximum 7–15 days notice)

About the Role

We are seeking a hands-on Embedded Systems Engineer to take ownership of end-to-end hardware development, PCB layout, and firmware architecture for our micro-mobility and smart hardware platforms.

You will work directly on the core electronic nervous system of our vehicles and connected devices—from schematic design and multi-layer board routing in KiCad to writing production-grade firmware in ESP-IDF/C++, lab bench bring-up, and real-world vehicle testing.

Key Responsibilities

PCB & Hardware Engineering: Design, layout, and validate 2-to-4 layer boards using KiCad. Select components, manage BOMs, optimize for DFM/DFA, and build custom power distribution and peripheral circuits.

Firmware Development: Develop robust, non-blocking firmware for microcontrollers (primarily ESP32 and ARM Cortex-M) leveraging FreeRTOS tasks, queues, timers, and state machines.

Peripheral & Communication Protocols: Integrate and debug hardware communication interfaces including I2C, SPI, UART, CAN bus, ADC sensor feeds, and cellular/GPS (4G LTE/GNSS) modules.

Bench Bring-Up & Diagnostics: Solder, assemble, and test prototype boards in the lab. Diagnose hardware faults, noise issues, signal integrity, and power anomalies using multimeters, oscilloscopes, and logic analyzers.

Field Validation & Documentation: Collaborate on vehicle-level testing, thermal performance,



and vibration reliability. Maintain structured Git repositories, board revisions, and hardware design documentation.

What We Are Looking For

Microcontrollers: Solid foundation in ESP32 (ESP-IDF or advanced C/C++) architecture. Understanding of FreeRTOS memory management, task prioritization, and low-power modes.

EDA Tools: Demonstrable experience in KiCad (schematic capture, routing, ground planes, decoupling strategies, and DRC/ERC checks).

Lab Skills: Hands-on experience with SMD soldering (0603/0805 passives, QFN/SOIC packages) and bench tools (digital oscilloscopes, logic analyzers, variable DC supplies).

Communication Standards: Working knowledge of vehicle and IoT telemetry buses (UART, CAN, I2C, SPI) and wireless interfaces (Wi-Fi, BLE, MQTT).

Problem-Solving Mindset: Ability to trace a system crash down to either a noisy ground return, a brownout drop, or an unhandled ISR.

Bonus Points

Active past involvement in collegiate design competitions (Formula Student, BAJA SAE, Robocon) leading electrical/telemetry subsystems.

Experience interfacing with BLDC motor controllers, digital throttles, battery management systems (BMS), or IoT cloud backends.

Familiarity with local component procurement, PCB fabrication houses, and stencil assembly processes.

Hiring & Probation Details:

Joining: Immediate (to ensure a direct handover and onboarding with the outgoing engineer).

Probation Period: 3 months with hands-on responsibilities, focused on bench bring-up, firmware testing, and board revisions.

Permanent Conversion: Evaluated at the end of Month 3 based on independent execution, code quality, and troubleshooting speed.

If you are interested in this chance, please send your resume and a cover letter explaining why you are the best fit for this role to [email protected]. We look forward to hearing from you soon.

Perks:

Base pay+ ESOP options.

📌 Embedded Systems Engineer (Mumbai)
🏢 HOOK Ebike
📍 Mumbai