Note: The job is a remote job and is open to candidates in USA. Armada is a full-stack edge infrastructure company delivering compute, connectivity, and sovereign AI/ML to some of the world’s most remote places. They are seeking a Mechanical Engineer - Hydronics to own the mechanical distribution architecture for their modular liquid-cooled data center platform, focusing on design, execution, and collaboration with various teams.
Responsibilities
- 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
- 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
- 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
- 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
- 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
- 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
- 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
Skills
- 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
- 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
Benefits
- Equity
- Subsidized benefits
- Medical, dental, and vision (subsidized cost)
- Health savings accounts (HSA), flexible spending accounts (FSA), and dependent care FSAs (DCFSA)
- Retirement plan options, including 401(k) and Roth 401(k)
- Unlimited paid time off (PTO)
- 14 paid company holidays per year
Company Overview