Who Are We
Raptee.HV is a full-stack electric motorcycle startup with a strong technical foundation. Founded in 2019 by four engineers from Chennai (with backgrounds at Tesla and Wipro), Raptee Energy aims to revolutionize the EV market by offering a high-performance motorcycle alternative to the existing scooter-dominated options. The company is incubated at CIIC & ARAI.Why Join Us?As a Hardware Engineer, you will own the
schematic design, MCU selection, control analysis, and debugging of our PMSM motor controllers
. From deriving PI gains mathematically, to designing circuits, to validating MTPA and field-weakening strategies on dyno, your work will directly shape the
efficiency, drivability, and reliability
of our motorcycles.This role offers a unique chance to bridge
theory and practice
— combining advanced control mathematics, hardware design, and real-world validation — with your designs powering vehicles on the road.Key Responsibilities
- Power Electronics & High-Voltage Hardware
- Design inverter stages, gate driver circuits, protection circuits, and sensing hardware for PMSM controllers.
- Select and validate semiconductors (MOSFETs, IGBTs, drivers, sensors) with attention to thermal and EMI/EMC constraints.
- Support EMI/EMC compliance and reliability engineering.
- Low-Voltage & Schematic-Level Design
- Create schematics for microcontroller circuits, decoupling, RC filters, and signal conditioning.
- Define best practices for analog vs digital ground separation, noise mitigation, and mixed-signal design.
- Provide clean schematic packages for PCB design engineers and review their implementation.
- Control Systems & Plant Modeling
- Develop mathematical plant models of inverter–motor systems using Laplace transforms and transfer functions.
- Perform stability analysis and analytically calculate PI/PID gains before dyno validation.
- Simulate and validate control loops in MATLAB/Simulink.
- Advanced PMSM Control Strategies
- Apply advanced PMSM/IPM control methods such as MTPA, MTPV/field weakening, and deep field weakening.
- Understand differences in strategy between surface PMSM and interior PMSM.
- Implement and validate smooth transitions between torque control, MTPA, and flux-weakening regions.
- Optimize strategies for efficiency, drivability, and thermal limits.
- Hardware Debugging & Validation
- Bring up new boards, validate signals, and debug hardware issues across power and low-voltage domains.
- Diagnose noise, grounding, or signal integrity problems and propose corrective design changes.
- Validate torque output, efficiency, and stability on dyno setups.
- System Architecture & MCU Selection
- Collaborate with software and firmware engineers to select appropriate microcontrollers.
- Define requirements such as clock speed, memory size, ADC resolution, PWM frequency, and peripheral availability.
- Decide pin mapping, communication interfaces (CAN, SPI, I2C, UART), and safety features to support system needs.
- Ensure hardware choices align with control-loop timing and software requirements.
- Vehicle-Level Perspective
- Understand how motor controller design affects regen strategies, drive-cycle energy use, and overall vehicle range.
- Use vehicle-level simulations to align hardware and control choices with efficiency and drivability goals.
- Collaboration & Documentation
- Work closely with firmware/software engineers for integrated development.
- Document schematics, component justifications, control analysis, debugging results, and validation procedures.
What We’re Looking For
- B.E./B.Tech or M.E./M.Tech in Electrical, Electronics, Power Electronics, or Control Systems Engineering.
- Strong knowledge of PMSM/IPM motor controller hardware (inverters, gate drivers, sensing, protection).
- Deep understanding of control theory: Laplace transforms, transfer functions, Bode/Nyquist stability, PI/PID tuning.
- Practical expertise in advanced PMSM control strategies (MTPA, MTPV, flux weakening, deep field weakening).
- Experience in schematic-level design of both power and low-voltage circuits.
- Hands-on experience in hardware debugging and board bring-up.
- Familiarity with MATLAB/Simulink for plant modeling, control simulation, and vehicle-level analysis.
- Experience validating controllers on dyno setups.
- Ability to collaborate on microcontroller selection and requirements definition with software teams.
Nice-to-Have
- Experience with automotive standards (ISO 26262, EMI/EMC).
- Exposure to state-space or observer-based control methods.
- Knowledge of thermal design and reliability analysis.
- Experience with HIL testing or rapid prototyping.
What’s In It For You
- Opportunity to work in a fast-paced and dynamic environment.
- Opportunities for professional advancement as the company undergoes expansion.
- A culture that fosters collaboration and creativity within the team.
- Collaborate closely with seasoned experts in the field.
