Lead Hardware Engineer

Ajax
Ho Chi Minh
On-site

Who this role is best for

A natural match if you have experience leading hardware projects to mass production and working in cross-functional teams.

Best fit for

  • Candidates with senior-level project leadership and cross-departmental collaboration experience
    — “consult on cross-departmental optimizations
  • Individuals with expertise in both battery and mains-powered device design
    — “Deep expertise in designing both battery-powered and mains-powered (85–265 VAC) devices
  • Candidates who have guided products through global regulatory compliance processes
    — “Experience guiding products through global certifications (UL, CE, RED)

Things to consider

  • This role involves a high degree of responsibility in mass production with 10,000+ units/month targets
    — “Lead complex hardware projects from initial concept through to mass production (10,000+ units/month)
  • The position requires fluency in English for international collaboration
    — “Fluent English is required for technical documentation and international collaboration

How to stand out

  • Highlight your experience with high-volume manufacturing and DfX compliance in your resume
    — “Proven track record of designing for LVD/EMC compliance and mass manufacturing (DFM/DFT)
  • Emphasize your ability to lead the prototype lifecycle and debug complex hardware issues
    — “debugging complex issues and defining rigorous testing protocols for design validation
  • Showcase your EDA proficiency, especially with Altium Designer and 3D modeling
    — “Professional proficiency in Altium Designer (experience with managed libraries and 3D modeling is preferred)
  • Demonstrate your strategic thinking in cost reduction and performance optimization
    — “Proactively identify opportunities for cost reduction and performance enhancement
Pace · SteadyCollaboration · HighAutonomy · HighDecision Impact · TeamLevel · Lead

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • develop sophisticated schematic solutions
  • lead complex hardware projects
  • define rigorous testing protocols
Typical background
advanced circuit designEDA masterydesign for excellence (DfX)

Skills & requirements

Required

Schematic SolutionsPCB LayoutsHigh-fidelity SimulationsAltium DesignerBOM ManagementGerber FilesAssembly DrawingsGit Version Control

Preferred

Signal Integrity (SI)Power Integrity (PI)Embedded Software (c/c++)Global Certifications (UL, CE, RED)

Stack & domain

Altium DesignerC/c++Stm32S-parametersPDN Impedance ModelingTDR MeasurementsCommunicationProblem-solvingTeamworkHardware EngineeringSecurity SystemsEmbedded Software

About the role

Original posting from Ajax via Lever

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

Ajax Systems is an international tech company and the largest manufacturer of security systems in Europe, with over 4.5 million end users and 330K PRO users in more than 180 countries worldwide. The company offers end-to-end solutions for protecting homes and businesses of any scale. To date, the Ajax product portfolio includes 280 devices for intrusion protection, video surveillance, fire and life safety, and comfort and automation.

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

We are looking for an expert who brings strategic value: someone who can oversee complex system architectures, consult on cross-departmental optimizations, and mentor the team on high-performance design methodologies. You will be the bridge between innovative concepts and mass-scale manufacturing.

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.

Source: Ajax careers (Lever)

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