BIM Designer, Mechanical

What you'll do

As a BIM Designer, Mechanical, you’ll develop and coordinate mechanical systems models (ductwork, hydronic piping, and equipment layouts) across our AI data center and industrial construction portfolio. You'll translate engineering markups and design criteria into fully coordinated, constructible Revit models, applying real mechanical engineering judgment rather than just drafting what you're told. This role sits inside our growing BIM function, working shoulder-to-shoulder with electrical, structural, and civil designers to keep one federated model as the single source of truth from design through fabrication and field support.

Where you'll work

We are an in-office culture — velocity matters when you're building physical infrastructure, and the best decisions happen in the room. This role is ideally based in our San Francisco, Long Beach, or Houston offices, with full-time onsite expectations outside of bi-weekly WFH Fridays.

That said, we will make exceptions for truly exceptional talent if you live outside one of our hubs. If you're the right person for this role, we'll have a conversation about what works.

Responsibilities

Develop mechanical system models in Revit from engineering markups, sketches, and design criteria, including ductwork, hydronic piping, and mechanical equipment layouts

Size ductwork and piping based on airflow, velocity, pressure drop, and equipment requirements, applying sound engineering judgment when every detail isn't fully specified

Produce mechanical plans, sections, details, and schedules directly from coordinated BIM models

Proactively coordinate mechanical systems with structural, architectural, electrical, plumbing, and controls disciplines

Run and participate in Navisworks clash detection, investigating root causes and driving resolutions rather than just flagging conflicts

Track coordination issues through closure and ensure resolved changes are incorporated into the model

Maintain model accuracy, organization, and compliance with Giga's BIM standards

Support construction and field teams by resolving mechanical routing and coordination questions, incorporating field conditions into the model

Perform quality-control reviews of mechanical models and drawings to catch errors and coordination gaps before release

Requirements

Bachelor's degree in Mechanical Engineering, Architectural Engineering, or a related technical field, or equivalent experience

5+ years of experience developing mechanical systems in Autodesk Revit

Strong experience modeling HVAC ductwork, hydronic piping systems, and mechanical equipment layouts

Working knowledge of duct and pipe sizing, airflow, velocity, and pressure-drop criteria

Demonstrated ability to take engineering markups and independently develop a complete mechanical layout

Experience coordinating mechanical systems across architectural, structural, electrical, and plumbing disciplines, including identifying and resolving BIM clashes

Strong attention to detail and clear written and verbal communication skills

Bonus points

Experience designing mechanical systems for data centers, mission-critical, or other technically complex industrial facilities

Familiarity with high-density data center cooling and liquid cooling infrastructure

Experience with Navisworks Manage, Autodesk Construction Cloud / BIM 360, and clash detection workflows

Familiarity with ASHRAE standards and mechanical codes

Experience supporting projects through construction and resolving field coordination issues

Benefits

Subsidized health, dental, and vision insurance

Equity (options) in a rapidly growing startup

401(k) with 4% employer match

Unlimited PTO

Parental leave

Healthcare and Dependent Care Flexible Spending Accounts (FSA) or Health Savings Account (HSA)

Commuter benefits

Team on-sites where all offices come in–person to collaborate