About AGI
Advanced Giga Inc. designs, fabricates, and deploys modular data center infrastructure for hyperscale operators. Our flagship products the MDH (Modular Data Hall), MTCS (Modular Technology Cooling System), and MES (Modular Energy Server) - are factory-built, tested, and commissioned before they ever leave our facility. We are not a general contractor. We are an engineering-led manufacturer that owns the full lifecycle: design, fabrication, controls integration, factory acceptance testing, delivery, and on-site commissioning. Our clients include the largest cloud infrastructure providers in the world.
We are a small, high-impact team where your decisions directly shape outcomes on programs worth tens of millions of dollars. If you have spent your career inside large organizations and are looking for a place where your experience actually gets used - not diluted across layers of bureaucracy - this is it.
The Role
AGI is hiring a Senior Mechanical/Process Engineer to own the thermal and fluid systems that are the core of our products. Everything we build exists to move heat - from IT equipment into air, from air into water, from water into the atmosphere - and you will be the engineering authority on how those systems are designed, sized, specified, and documented.
You will own your systems top to bottom. That means developing the process flow diagrams, producing P&IDs, performing hydraulic calculations, selecting equipment, writing RFQs, reviewing vendor submittals, making purchasing recommendations, and then reviewing the 3D model to ensure what got designed matches what got drawn. You are not handing off to someone else at any stage - you carry it from concept through commissioning.
You need to be able to draw. Whether it is a block flow diagram on a whiteboard, a P&ID in Bluebeam or AutoCAD, or process schematics in Revit - you produce the documents that define the system, and you give clear enough direction to designers that they can execute the 3D model from your basis of design. You also need to review those models and understand the relationship between the BIM geometry and the P&ID logic to catch errors before they reach fabrication.
Your PE stamp matters here. Our modules ship to multiple states, and you need an NCEES record that allows you to obtain licensure wherever projects require. You will stamp mechanical drawings, review third-party engineering, and serve as AGI’s responsible engineer of record on the mechanical and process discipline.
What You Will Actually Do
• Design thermal management and fluid distribution systems for modular data center infrastructure - technology cooling water loops, chilled water systems, condenser water circuits, glycol systems, and heat rejection equipment
• Develop block flow diagrams, process flow diagrams (PFDs), and piping and instrumentation diagrams (P&IDs) from scratch - defining system architecture, control philosophy, instrumentation, and operating parameters
• Develop Sequences of Operations (SOOs) that define normal operating modes, startup/shutdown procedures, failure response logic, and transition states for mechanical and process systems
• Lead or participate in PMFEA (Process Mode and Failure Effects Analysis) and HAZOP studies - identify failure modes, assess risk, define safeguards, and document findings for both internal design reviews and client deliverables
• Perform heat transfer calculations and thermal analysis - heat exchanger sizing and selection, approach temperatures, effectiveness-NTU, LMTD, fouling factors, and system-level energy balance
• Perform hydraulic calculations - pump sizing, pipe sizing, system curve development, NPSH analysis, pressure drop calculations, and CV sizing for control valves
• Specify and select major mechanical equipment - heat exchangers (plate, shell-and-tube, air-cooled), cooling towers, adiabatic coolers, dry coolers, chillers, pumps (centrifugal, positive displacement), expansion tanks, air separators, chemical treatment systems, and associated instrumentation
• Prepare RFQ packages for mechanical equipment - develop technical specifications, bid evaluation criteria, and commercial comparison matrices. Review vendor submittals and make purchasing recommendations from a technical standpoint
• Review 3D Revit/Navisworks models against P&IDs to verify design intent is accurately captured - check valve orientations, instrument locations, slope/drainage, accessibility, and operational sequencing
• Provide clear direction to designers for 3D model execution - marked-up P&IDs, routing sketches, equipment arrangement preferences, and design criteria that allow a drafter to produce accurate geometry without constant oversight
• Design compressed gas systems - nitrogen, instrument air, and specialty gas distribution including pressure regulation, storage, and distribution piping
• Coordinate with controls engineering on process control strategies - control valve sizing, instrument selection, setpoint definition, alarm philosophy, and PLC/BMS interface requirements
• Coordinate with structural and electrical disciplines on equipment loads, vibration isolation, power requirements, and space allocation
• Produce stamped mechanical engineering documents - calculations, specifications, data sheets, and drawing packages ready for permitting, fabrication, and certification
• Support factory acceptance testing (FAT) and on-site commissioning - develop test procedures, witness hydrostatic testing, system flush/passivation, and performance verification
• Manage your engineering workload across multiple concurrent programs without constant direction - you take design criteria and client specifications and deliver complete, stamped engineering packages
Who You Are
• Licensed Professional Engineer (PE) in Mechanical Engineering with an active NCEES record allowing comity licensure in additional states
• 10+ years of mechanical/process engineering experience with substantial focus on heat transfer systems and thermal management for high-density critical environments
• Deep understanding of data center cooling architectures - air-side economization, chilled water plants, direct liquid cooling, rear door heat exchangers (RDHX), fan coil units, CRAHs/CRACs, in-row cooling, and hybrid air/liquid systems
• Direct experience with heat rejection equipment - cooling towers (open and closed circuit), adiabatic coolers, dry coolers, air-cooled chillers, and water-cooled chiller plants including free cooling economizer modes
• Experience with coolant distribution units (CDUs) and direct-to-chip liquid cooling systems - understanding of facility water vs. technology cooling water vs. IT-side coolant loops
• Ability to produce P&IDs, PFDs, and block flow diagrams from scratch in Bluebeam, AutoCAD, or Revit - you are the originator of these documents, not just a reviewer
• Strong hydraulic engineering skills - pump selection with system curve analysis, pipe sizing, pressure drop calculations across fittings and equipment, NPSH verification, and control valve CV sizing
• Experience writing RFQ packages, evaluating vendor proposals, reviewing submittals against specifications, and making technically-grounded procurement recommendations
• Ability to review 3D BIM models and understand the relationship between model geometry and P&ID logic - you catch when a model does not match the design intent
• Experience directing designers/drafters - providing clear enough basis of design, marked-up sketches, and written direction that a competent drafter can produce accurate 3D models and fabrication documents from your input
• Self-directed engineering workflow - you take a set of client requirements or performance specifications and deliver a complete system design without needing someone to break it into tasks for you
Preferred (Not Required)
• Experience with compressors, expanders, companders, and turboexpanders - particularly in refrigeration, gas processing, or advanced cooling applications
• Experience with modular or prefabricated mechanical systems - factory-built cooling plants, skidded pump systems, or packaged heat rejection solutions
• Background in data center mechanical design for hyperscale operators including familiarity with their specifications and cooling strategies
• Experience with computational fluid dynamics (CFD) for airflow modeling in contained data center environments
• Familiarity with pipe stress analysis concepts and ability to coordinate with stress engineers on thermal expansion, anchor loads, and flexibility requirements
• Experience with water treatment chemistry for closed-loop cooling systems - glycol management, corrosion inhibitors, biocide programs, and water quality monitoring
• Knowledge of UL/ETL certification processes as they relate to mechanical assemblies and piping systems within listed equipment
• Experience with commissioning and startup of large cooling systems - system flush/passivation (ASTM A967), chemical cleaning, nitrogen purge, and performance testing
• Familiarity with Revit MEP for mechanical systems - enough to navigate models, extract data, and mark up directly in the model environment
What We Offer
• Performance bonus tied to program delivery milestones
• Direct impact on a high-growth company at the intersection of manufacturing and critical infrastructure
• Ownership of your domain - you are the mechanical/process engineering authority, your stamp is on the drawings, and your system designs define what gets built
• A technical leadership team that speaks your language (engineering-led company, not sales-led)
• The chance to build something from a formative stage - this is not a mature 500-person organization with established playbooks. We are building those playbooks, and the right person will help write them
To Apply
Send your resume, PE license details, and a brief description of the most complex thermal/fluid system you have designed to info@advancedgiga.ai.