Senior Mechanical Design Engineer – Liquid Cooling Systems; Fully Remote

• This role sits at the intersection of mechanical design, hydraulic engineering, thermal infrastructure, and manufacturing.
• You will own the mechanical distribution architecture connecting heat-rejection equipment, pumps, piping, manifolds, and rack cooling systems.

• Define primary, secondary, and rack-level cooling boundaries, plus pumping and flow-control strategies.
• Perform hydraulic modeling and develop P&IDs, schematics, and equipment schedules.
• Design for manufacturing, serviceability, and commissioning-first principles.

• 7+ years of experience in mechanical cooling, hydraulic distribution, or mission-critical infrastructure.
• Strong knowledge of pipe sizing, pump selection, and P&.
• Ability to collaborate across engineering, manufacturing, controls, and field teams.
• Competitive base salary and equity.
• Medical, dental, and vision coverage.
• Unlimited PTO and 14 paid company holidays.

Armada is the hyperscaler for the edge, delivering modular AI infrastructure that enables rapid, sovereign deployment from first deployment to AI factory. With nearly $500 million in funding and backing from leading investors, Armada operates in over 60 countries and fosters a culture of ownership, autonomy, and transformative impact.