# Lead Hardware Engineer

**Company**: Ajax Systems
**Location**: Ho Chi Minh
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Category**: Engineering
**Industry**: Technology

**Apply**: https://jobs.lever.co/ajax/1ca30157-674f-4057-ab28-785c715eba5f?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_38b6aabb-577

## Description

Ajax Systems is expanding and is looking for a Hardware Engineer to strengthen our team in Vietnam.

As a Hardware Engineer, you will not only design circuits but also serve as a technical cornerstone for our R&D in Taiwan.

## Key Responsibilities

- Architecture & Design: Develop sophisticated schematic solutions and PCB layouts for new Ajax devices, ensuring high reliability and scalability.

- Strategic Optimization: Proactively identify opportunities for cost reduction and performance enhancement through component unification and innovative architectural shifts.

- Project Oversight: Lead complex hardware projects from initial concept through to mass production (10,000+ units/month), ensuring all technical risks are mitigated.

- Cross-Functional Consultation: Act as a subject matter expert for the firmware and supply chain teams to optimize the hardware-software interface and manufacturing yield.

- Prototype Lifecycle: Lead the “bring-up” process, debugging complex issues and defining rigorous testing protocols for design validation.

## Requirements

- Advanced Circuit Design: Expert-level calculation of circuit elements and high-fidelity simulations of device behavior.

- EDA Mastery: Professional proficiency in Altium Designer (experience with managed libraries and 3D modeling is preferred).

- Design for Excellence (DfX): Proven track record of designing for LVD/EMC compliance and mass manufacturing (DFM/DFT).

- Power Management: Deep expertise in designing both battery-powered and mains-powered (85–265 VAC) devices.

- Full Lifecycle Ownership: Experience preparing comprehensive production documentation (BOM management, Gerber files, assembly drawings) using Git for version control.

- Communication: Fluent English is required for technical documentation and international collaboration.

## Preferred Qualifications

- Supply Chain Leadership: Direct experience working with vendors and manufacturers for high-volume production.

- High-Speed Design: Advanced understanding of Signal Integrity (SI) and Power Integrity (PI).

- Experience with S-parameters, PDN impedance modeling, and TDR measurements.

- System-Level Thinking: Ability to write or review embedded software (C/C++, STM32) to facilitate deep-level debugging and hardware-software co-design.

- Regulatory Mentorship: Experience guiding products through global certifications (UL, CE, RED), beyond basic compliance.

## Skills

### Required
- Altium Designer
- Circuit Design
- Power Management
- Git
- English

### Nice to have
- Supply Chain Leadership
- High-Speed Design
- Signal Integrity (SI)
- Power Integrity (PI)
- S-parameters
- PDN impedance modeling
- TDR measurements
- System-Level Thinking
- Embedded software (C/C++, STM32)
- Regulatory Mentorship

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