JX Marine Technologies Private Limited

Location: Chennai preferred | Remote considered

Commitment: Full-time preferred | Part-time considered

Stage: Pre-prototype, system architecture completed

Compensation: Competitive salary + meaningful equity

JX Marine Technologies is building an advanced electric propulsion system for marine applications operating in some of the harshest conditions an engineering system can face.

Saltwater exposure. High temperature. High humidity. Vibration. Limited access to infrastructure. And in many operating environments, no reliable internet connectivity.

We are currently at the pre-prototype stage. Our system architecture is complete, and we are now looking for a Chief Technology Officer to lead the transition from architecture to a working prototype and, ultimately, a field-ready product.

This is a hands-on technology leadership role.

We are not looking for someone to advise the team from a distance. The CTO will work directly with the founding team, make key engineering decisions, build the core technology, and establish the engineering team as the company grows.

What you will ownYou will lead the development and integration of the core propulsion system.

This includes

- Bidirectional motor drive and power electronics
- Multi-cell battery systems and intelligent BMS
- Embedded motor control firmware
- Real-time embedded software and task scheduling
- On-device AI inference and predictive fault monitoring
- Thermal management and protection
- System communications and diagnostics
- Hardware and software integration
- Testing, fault isolation and field validation The system needs to operate reliably in saltwater, heat, and humidity without depending on continuous cloud connectivity.

You will be expected to work across hardware and software boundaries rather than treating them as separate problems.

For example, when a system fault occurs, you should be comfortable moving from measurements at the power stage to firmware behaviour, sensor signals, communications, control logic, and battery behaviour to identify the actual root cause.

What you will doFrom day one, you will:

- Turn the existing system architecture into a working prototype
- Select and evaluate key hardware components
- Develop and integrate the motor drive, battery, and BMS systems




- Develop embedded motor control firmware
- Design the real-time software architecture and task scheduling
- Integrate on-device AI inference with the embedded control system
- Establish hardware-in-the-loop and system-level testing
- Debug failures using measurements, instrumentation, and structured analysis
- Define engineering standards, documentation, and development processes
- Lead domain engineers and interns as the team expands
- Review technical work and make architecture-level decisions
- Participate in field testing and validation
- Work closely with the founding team on product and technology strategy

This role will involve hands-on engineering. You should expect to design, build, test, debug, and occasionally start again when the data tells us that something is wrong.

What we are looking forWe are looking for an engineer who has already built and debugged real systems.

You should have at least 2 to 3 years of hands-on industry or project experience across two or more of the following areas:

- Power electronics
- Battery systems and BMS
- Embedded motor control
- Embedded firmware
- Real-time systems
- Motor drives
- Power management systems
- Embedded AI or edge inference

We are particularly interested in candidates who have worked on real hardware, not only simulations, academic models, or reference designs.

You should be able to demonstrate that you have worked on a multi-subsystem system where hardware and software had to operate together.

More importantly, you should be able to explain what happened when something went wrong.

If a motor drive stopped behaving correctly, a BMS generated unexpected readings, a controller became unstable, or an embedded system failed under load, how did you determine where the problem was?

We want someone who approaches problems through measurement, testing, reasoning, and evidence.





Leadership mattersThe CTO will not only be responsible for the technology.

As the engineering team grows, you will be responsible for building the technical culture around it.

You should be comfortable

- Breaking complex engineering work into clear tasks
- Mentoring junior engineers and interns
- Reviewing designs and implementation
- Setting technical priorities
- Making decisions when information is incomplete
- Holding engineering standards
- Taking responsibility when systems fail
- Working closely with the founding team

You should also be willing to travel for field testing and validation when required.

Who this role may suitThis could be a strong fit for an experienced embedded, power electronics, motor control, or battery engineer who wants to take genuine ownership of a product rather than remain within a narrow engineering function.

It may also suit someone who has worked across multiple engineering disciplines and is ready to take their first major technology leadership role in an early-stage company.

We care more about what you have actually built and debugged than the title on your previous job.

What we offerFull-time: Preferred, with a high level of ownership and commitment.

Part time: Considered for the right candidate, with a minimum commitment of 25 hours per week.

Location: Chennai preferred. Remote candidates will be considered depending on their experience and ability to participate in hardware development and field testing.

Compensation: Competitive salary and meaningful equity. The exact structure will be discussed with shortlisted candidates based on experience, commitment, and responsibilities.

How to applyEmail your CV to:

[email protected]

Subject: CTO Application, Your Name

Your application must include a written answer to the question below.

Applications without an answer will not be reviewed.

"Describe one multi-subsystem project you worked on involving power electronics, embedded firmware, or a battery management system."

We are interested in the engineering process, not a perfect project story.

If you have built something real, had it fail, found the reason, and fixed it, tell us about that.

David Ratham, MIET

Founding Engineer

JX Marine Technologies Private Limited

📌 Chief Technology Officer (Chennai)
🏢 JX Marine Technologies
📍 Chennai