Mechanical Engineer

Plan B Climatech; United States; On-site; USD 110,000 - 160,000; Full time

Job summary

Plan B Climatech is seeking a Senior Mechanical Engineer in the United States to own mechanical system design for critical facilities such as data centers, hospitals, and labs. The successful candidate typically has 6–12 years of HVAC/plumbing design experience and may hold a PE license or be pursuing one.

You will lead design of HVAC, plumbing, and mechanical systems, coordinate with multidisciplinary teams, and support QA/QC and business development as the role grows, with emphasis on

Qualifications

• 6–12 years of HVAC and/or plumbing design experience
• PE license preferred or in progress
• Experience with data centers or healthcare facilities preferred
• Working knowledge of ASHRAE and NFPA codes
• Proficiency with Revit, AutoCAD, and load calculation tools
• Strong written and verbal communication for client coordination

Responsibilities

• Design and develop HVAC, plumbing, and mechanical systems for new construction, renovations, infrastructure upgrades, and facility assessments
• Evaluate and select cooling and air distribution strategies (including precision cooling, chilled water, and redundant system configurations) for mission-critical applications
• Size and specify major mechanical equipment, and develop equipment schedules and specifications
• Coordinate mechanical designs with electrical, structural, architectural, and other disciplines to ensure integrated, buildable solutions
• Lead or support QA/QC reviews to ensure drawings and calculations meet internal standards and code requirements
• Participate in client meetings, design coordination sessions, and construction site visits to monitor installation quality and progress
• Mentor and provide technical guidance to junior engineers and designers on system layout, sizing, and design best practices
• Assist with field verification, existing conditions surveys, and data collection for renovation or retrofit projects
• Support business development efforts, including proposal input and client relationship building, as your role grows
• Stay current on industry codes, standards, and emerging technologies relevant to critical facilities (e.g., data center cooling trends, healthcare-specific mechanical/medical gas requirements)

Skills

HVAC design

Plumbing design

Data center expertise

Cross-disciplinary coordination

Mentoring engineers

Education

Bachelor's in Mechanical Engineering

Professional Engineer (PE) license

Tools

Revit

AutoCAD

Load calculation tools

Job description

We're looking for a Senior Mechanical Engineer to join our client's team and take ownership of mechanical system design for complex, high-stakes facilities — think data centers, hospitals, labs, and other environments where uptime and reliability aren't optional. This role is a great fit for an engineer with roughly 6-12 years of HVAC and plumbing design experience who's ready to take on more ownership and specialize in mission-critical environments. Prior experience with data centers or healthcare facilities is a strong plus, but it's not required.

What You'll Do

• Design and develop HVAC, plumbing, and mechanical systems for new construction, renovations, infrastructure upgrades, and facility assessments
• Evaluate and select cooling and air distribution strategies (including precision cooling, chilled water, and redundant system configurations) for mission-critical applications
• Size and specify major mechanical equipment, and develop equipment schedules and specifications
• Coordinate mechanical designs with electrical, structural, architectural, and other disciplines to ensure integrated, buildable solutions
• Lead or support QA/QC reviews to ensure drawings and calculations meet internal standards and code requirements
• Participate in client meetings, design coordination sessions, and construction site visits to monitor installation quality and progress
• Mentor and provide technical guidance to junior engineers and designers on system layout, sizing, and design best practices
• Assist with field verification, existing conditions surveys, and data collection for renovation or retrofit projects
• Support business development efforts, including proposal input and client relationship building, as your role grows
• Stay current on industry codes, standards, and emerging technologies relevant to critical facilities (e.g., data center cooling trends, healthcare-specific mechanical/medical gas requirements)

What You Bring

• Approximately 6-12 years of experience designing HVAC and/or plumbing systems for commercial, institutional, or industrial buildings
• A Professional Engineer (PE) license, or active progress toward one, is preferred
• Experience with data center, healthcare, or other mission-critical facility design is preferred but not required — we're happy to help you build this expertise
• Working knowledge of relevant codes and standards (ASHRAE, NFPA, local building/health codes, etc.)
• Proficiency with mechanical design and modeling software (e.g., Revit, AutoCAD, load calculation tools)
• Strong written and verbal communication skills for coordinating with clients, contractors, and multidisciplinary project teams

What Sets You Up to Succeed Here

• A collaborative mindset — you enjoy working across disciplines and building strong relationships with clients and trade partners
• Sound judgment and problem-solving instincts when navigating complex, high-consequence design challenges
• Comfort managing multiple projects and priorities without losing sight of quality or deadlines
• An interest in mentoring less experienced team members and helping them develop technically
• A genuine curiosity about mission-critical environments and a desire to deepen your expertise in data centers, healthcare, or both
• Self-direction paired with a willingness to ask questions and seek guidance when working in an unfamiliar building type