Electrical Engineer (Launcher)

Harmattan Ai
Paris, France
On-site

Who this role is best for

Best suited to experienced hardware engineers with a focus on power electronics and outdoor deployment working in defense and autonomous systems.

Best fit for

  • Candidates with a track record of designing and shipping complex PCBs with power and digital components
    — “senior hardware engineer who has designed and shipped complex PCBs, ideally mixing digital and significant power”
  • Individuals who can balance technical rigor with cost optimization for mass production
    — “strong instinct for cost and manufacturability”
  • Engineers comfortable with autonomous systems and real-world environmental constraints
    — “design with real-world operating conditions in mind - temperature, moisture, surges”

Things to consider

  • The role likely involves working in a small team with high expectations for autonomy and execution
    — “comfortable working autonomously in a small team”
  • Candidates must be prepared to handle both hardware and firmware integration responsibilities
    — “bridge hardware and firmware”

How to stand out

  • Highlight experience with mixed-signal design and power management in your resume and interview
    — “Mixed-signal design: power management, MCU interfaces, communication buses”
  • Emphasize your ability to define and validate thermal strategies, especially for battery systems
    — “thermal strategy, including battery temperature management”
  • Showcase your PCB layout skills with a focus on signal integrity and EMC
    — “Perform or lead board placement and routing with attention to signal integrity, EMC”
  • Demonstrate familiarity with power over Ethernet (PoE) and its implementation challenges
    — “Power over Ethernet (IEEE 802.3af/at/bt): combined power and data delivery”
  • Include examples of component selection and BOM optimization in your application materials
    — “Component selection and BOM management”
Pace · SteadyCollaboration · MediumAutonomy · MediumDecision Impact · Team

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

What success looks like

  • designing and shipping complex PCBs
  • defining and validating the power architecture of the product
  • ensuring the electronics withstand outdoor deployment conditions
  • selecting components with cost, availability, and reliability in mind
Typical background
senior hardware engineer experiencedesigning and shipping complex PCBs

Skills & requirements

Required

PCB Schematic And Layout DesignPower Electronics DesignThermal RegulationMixed-signal DesignHardware Bring-up And DebugDfm/dfa For PCB Manufacturing And AssemblyComponent Selection And BOM ManagementEnvironmental RobustnessEMC & Safety Compliance

Preferred

Lightning And Surge ProtectionAltium Designer ProficiencyExperience With Outdoor-deployed Equipment

Stack & domain

PCB Schematic And Layout DesignPower Electronics DesignThermal RegulationPower Over EthernetMixed-signal DesignHardware Bring-up And DebugDfm/dfaComponent Selection And BOM ManagementDefenseAutonomous Systems

About the role

Original posting from Harmattan Ai via Ashby

ABOUT US

Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces.

Our work is guided by clear values: building technologies with real-world impact, pursuing excellence in everything we do, setting ambitious goals, and taking on the hardest technical challenges. We operate in a demanding environment where rigor, ownership, and execution are expected.

Overview

Harmattan AI is developing new hardware products within the Launcher module: field-deployable drone launchers designed to be deployed and operated autonomously in demanding field environments. These products require dedicated electronics design with complex architecture in a constrained environment – PCBs integrating power conversion, energy management, control and communication interfaces – optimised for cost at volume. The Launcher team is seeking a dedicated hardware engineer to own electronics design end-to-end and accelerate the path to production milestones.

Ideal candidate

A senior hardware engineer who has designed and shipped complex PCBs, ideally mixing digital and significant power (hundreds of watts), into production. They are rigorous on schematics, layout, and bring-up, and have a strong instinct for cost and manufacturability. They design with real-world operating conditions in mind - temperature, moisture, surges - and an interest in battery thermal management; direct experience of outdoor-deployed equipment is a plus rather than a prerequisite. They are comfortable working autonomously in a small team and can bridge hardware and firmware.

Skills required

  • PCB schematic and layout design (Altium Designer preferred)
  • Power electronics design: ~300 W DC/DC conversion, protection, derating, efficiency and thermal budgets
  • Thermal regulation: temperature sensing and control loops, battery storage temperature management, heatsinking
  • Power over Ethernet (IEEE 802.3af/at/bt): combined power and data delivery, isolation, cable budgets
  • Mixed-signal design: power management, MCU interfaces, communication buses (SPI, I2C, UART, USB, CAN, Ethernet)
  • Hardware bring-up and debug: bench equipment proficiency
  • DFM/DFA for PCB manufacturing and assembly
  • Component selection and BOM management
  • Experience in lightning and surge protection is a plus

Responsibilities:

  • Schematic Design - Design complete schematics for mixed-signal and power boards, from power stages to digital and communication sections.
  • PCB Layout & Routing - Perform or lead board placement and routing with attention to signal integrity, EMC, and power-path constraints.
  • Power & Thermal Architecture - Define and validate the power architecture of the product and the thermal strategy, including battery temperature management.
  • Environmental Robustness - Ensure the electronics withstand outdoor deployment conditions and define the associated qualification plan.
  • Component Selection & BOM Optimization - Select components with cost, availability, and reliability in mind; drive BOM cost reduction for mass production volumes.
  • Hardware Bring-up & Debug - Lead board bring-up, debug issues with oscilloscopes, power bench equipment, and other bench equipment; write bring-up scripts when needed.
  • EMC & Safety Compliance - Address EMC challenges; ensure signal integrity across the board and electrical safety of the power and battery sections.
  • Collaboration with Embedded SW - Work closely with the embedded software engineer to define hardware/software interfaces; support firmware bring-up.
  • Collaboration with Mechanical - Ensure seamless PCB integration into mechanical enclosures (connectors, mounting, thermal, sealing, shielding).
  • Supplier & Manufacturing Ramp-up - Qualify PCB manufacturers and assembly houses; support DFM/DFA review for production; manage NPI transitions.
  • Documentation - Maintain schematics, layout files, test procedures, and hardware specifications.

We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.

Source: Harmattan Ai careers (Ashby)

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