About the Company
Armada is the hyperscaler for the edge, delivering modular AI infrastructure from first deployment to AI factory with speed, scale and sovereignty. Named one of Fast Company's Most Innovative Companies and to the CNBC Disruptor 50, Armada’s solutions are deployed in over 60 countries globally for organizations ranging from energy to defense.
With nearly half a billion dollars in funding, Armada is backed by top investors such as Microsoft (M12), Founders Fund, and BlackRock, and has collaborations and partnerships including NVIDIA, Palantir and Dell Technologies. We are looking for the most brilliant minds in the world to join us.
Working at Armada means taking ownership, driving autonomy, and delivering impact. You’ll tackle challenges that haven’t been solved before and help build something transformative from the ground up. What you do here will not only define your career but help further Armada’s mission to bridge the digital divide for customers around the world.
About the role
We are looking for a Mechanical Engineer - Hydronics (Distribution Focus) to own the mechanical distribution architecture for our modular liquid-cooled data center platform. This role is responsible for the piping, valves, instrumentation, module interconnects, and serviceability strategy across both the primary water loop and secondary PG25 loop.
This is a hands-on architecture and execution role focused on building a system that is repeatable, commissionable, maintainable, and scalable across multiple deployments. The right candidate will bring deep hydronic distribution expertise and a practical understanding of what it takes to move a design from concept into manufacturing, field installation, startup, and long-term operation.
You will work closely with internal engineering teams, OEMs, fabricators, controls, manufacturing, and commissioning leads to ensure the mechanical distribution layer is robust, standardized, and ready for real-world deployment.
Location. This role is remote.
What You'll Do (Key Responsibilities)
Hydronic Architecture Ownership
Own the hydronic distribution architecture across:
Primary water/PG25 loop
Secondary water/PG25 loop
Define and standardize system design rules for flow, pressure drop, balancing, and measurement
Establish practical design approaches for PG25 and water-based systems, including pipe sizing, fluid behavior, and maintainability considerations
Support system-level alignment between plant, distribution, and rack cooling interfaces
Distribution Design and Interface Control
Own distribution P&IDs, valve schedules, and instrumentation schedules
Maintain revision discipline, tagging standards, and interface clarity across the mechanical distribution package
Define boundaries and interfaces between plant equipment, CDUs, rack cooling components, and module-to-module interconnects
Develop and maintain interface control documentation for hydronic system boundaries
Commissioning-First Design
Design for startup, commissioning, and long-term operation
Define fill, flush, vent, drain, isolation, bypass, and strainer strategies
Establish measurement points for flow, differential pressure, and temperature
Partner with commissioning and controls teams to define what must be measured, how it will be measured, and what acceptable startup performance looks like
Pipe Sizing and Pressure Drop Management
Own pipe sizing methodology and pressure drop strategy for both PG25 and water loops
Define practical approaches to balancing and instrumentation placement
Ensure real-world field performance aligns with design intent
Help establish repeatable standards for distribution performance across product variants
Layout, Serviceability, and Buildability
Own mechanical distribution layout packages and service clearance requirements
Ensure systems are designed for safe access, maintenance, replacement, and long-term serviceability
Support design for manufacturing by standardizing routing approaches, fittings strategy, tolerances, and assembly expectations
Help define clear factory-built versus field-installed scope boundaries
Modular Interconnect Strategy
Define standard module interconnect approaches, including manifolds, quick connects, labeling, boundary isolation, and leak detection interfaces as applicable
Ensure interconnect designs support rapid deployment while preserving reliability and maintainability
Drive consistency across builds to reduce site variability and improve product repeatability
Cross-Functional Integration
Partner with mechanical plant, thermal, electrical, controls, manufacturing, and commissioning teams
Coordinate system interfaces without losing baseline discipline
Work with OEMs and fabricators while maintaining ownership of the internal distribution architecture and standards
Support factory builds, field feedback collection, and lessons-learned incorporation into future revisions
Required Qualifications
7+ years of experience in hydronic distribution design for data centers, industrial systems, mission-critical HVAC, or comparable thermal infrastructure
Strong experience owning P&IDs, valve strategies, and instrumentation design
Practical field knowledge of commissioning, startup, and serviceability constraints
Experience with glycol-based cooling systems such as PG25 or equivalent
Strong understanding of pipe sizing, flow management, pressure drop, balancing, and measurement strategies
Proven ability to maintain documentation discipline, revision control, and interface clarity
Strong cross-functional collaboration skills across mechanical, controls, manufacturing, and field teams
Preferred Experience and Skills
Experience with liquid-to-liquid and liquid-to-air cooling systems for high-density compute or AI/HPC environments
Familiarity with modular or prefabricated infrastructure systems
Understanding and experience in AFT Fathom, Pipeflo and CFD Products
CAD or BIM fluency sufficient for 3D coordination, clash avoidance, and clearance validation
PE license in Mechanical Engineering, or equivalent depth of experience
Compensation
For U.S. Based candidates: To ensure fairness and transparency, the starting base salary range for this role for candidates in the U.S. are listed below, varying based on location experience, skills, and qualifications.
In addition to base salary, this role will also be offered equity and subsidized benefits (details available upon request).
We use a geographic pay structure based on cost-of-labor markets.
Final compensation will be determined by experience, scope, and level, and may vary from the posted range.
Benefits
#LI-AB1
#LI-Remote
Compensation
$137,040—$171,300 USD
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Equal Opportunity Statement
At Armada, we are committed to fostering a work environment where everyone is given equal opportunities to thrive. As an equal opportunity employer, we strictly prohibit discrimination or harassment based on race, color, gender, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other characteristic protected by law. This policy applies to all employment decisions, including hiring, promotions, and compensation. Our hiring is guided by qualifications, merit, and the business needs at the time.
Unsolicited Resumes and Candidates
Armada does not accept unsolicited resumes or candidate submissions from external agencies or recruiters. All candidates must apply directly through our careers page. Any resumes submitted by agencies without a prior signed agreement will be considered unsolicited and Armada will not be obligated to pay any fees.