Senior Residential Mechanical Designer

VetJobs • Fairfax, VA

2d • $60,000 - $75,000 • Hybrid

About The Position

PEG, LLC is hiring a Senior Residential Mechanical Designer to provide senior technical leadership for residential HVAC design projects. The role influences project outcomes, improves design processes, supports code compliance, and advances high-performance and green building practices. The position is intended for an experienced professional who can make independent technical decisions, mentor and train colleagues, and contribute in a collaborative, fast-paced environment.

Based in PEG’s main office in Fairfax, Virginia, the position offers the option of a hybrid remote/office schedule. The designer leads and reviews HVAC calculations and designs, performs quality assurance, coordinates with stakeholders, manages project deliverables and timelines, and supports internal technical standards and staff development.

Requirements

• Bachelor of Science degree in Mechanical Engineering or a related field.
• At least 3 years of relevant experience in residential mechanical (HVAC) design.
• Advanced proficiency in AutoCAD.
• Advanced proficiency in HVAC load calculations.
• Advanced proficiency with WrightSoft or similar residential HVAC design software.
• Advanced understanding of ACCA Manual J, Manual D, and Manual S methodologies.
• Strong working knowledge of IECC, ENERGY STAR®, and state residential energy code requirements.
• Advanced proficiency in Excel and SharePoint.
• Strong attention to detail and accuracy.
• Ability to manage multiple projects simultaneously and meet deadlines.
• Efficient time-management and organizational skills.
• Effective interpersonal and collaboration skills.
• Excellent verbal and written communication skills.
• Ability to read, write, and comprehend technical instructions and documentation.
• Strong analytical and problem-solving abilities.
• Ability to work independently with minimal oversight while supporting team development.

Nice To Haves

• EIT certification is strongly encouraged; a salary incentive is offered to those who obtain it.
• Experience working with green building programs and high-performance residential construction.

Responsibilities

• Lead the preparation, review, and validation of HVAC load calculations, duct sizing, ventilation strategies, and equipment sizing in accordance with ACCA standards and applicable energy codes.
• Serve as a senior technical resource for analysis and design teams.
• Perform advanced QA/QC reviews of residential mechanical designs and energy modeling deliverables.
• Identify design, compliance, or workflow issues and communicate recommendations and resolution options to management.
• Manage complex project scopes by organizing deliverables, milestones, and priorities.
• Establish and maintain project timelines, adjusting schedules in response to project demands and changing conditions.
• Develop technical solutions and process workarounds to maintain project progress and quality standards.
• Coordinate and validate design relationships with internal departments, clients, builders, architects, and other stakeholders.
• Interpret client requirements, jurisdictional constraints, and project-specific design considerations.
• Use and adapt to industry software platforms, including Manual J Software, AutoCAD, Wrightsoft/Wrightdraw, RESCheck, and REM/Rate.
• Maintain and manage project documentation, calculations, and reporting through Excel, SharePoint, and internal systems.
• Interface with Operations, Owners, Builders, and Subcontractors to resolve technical issues and communicate project impacts.
• Maintain advanced knowledge of current IECC requirements, state energy codes, and residential mechanical design standards.
• Support development and implementation of internal best practices, templates, and process improvements.
• Train and mentor junior and mid-level team members on technical procedures, software, code compliance, and company standards.
• Assist with onboarding and technical development initiatives for new staff.
• Participate in continuing education, certifications, and professional development related to residential HVAC design and green building practices.

Benefits

• 20 annual paid days off, consisting of 12 PTO days, birthday PTO, and 7 company-paid holidays.
• Company-sponsored medical insurance with a contribution of up to 50% of the monthly premium.
• Dental insurance.
• Vision insurance.
• 401(k) retirement plan with up to a 4% company match, vested immediately.
• Basic life and supplemental life insurance.
• Short-term and long-term disability coverage.
• Accident insurance.
• Pet insurance.
• Corporate-sponsored events.
• Paid professional development and salary incentives through learning and certification opportunities.
• Flexible benefits package.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior