Junior Mechanical Designer – Residential

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. Perform and review HVAC load calculations, duct sizing, and system sizing per ACCA Standards .

Posted 11/11/2026full-timeFairfax • Virginia • United StatesJunior💰 $50,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in HVAC load calculations, duct sizing, and system sizing in accordance with ACCA Standards, while effectively managing project timelines and deliverables. Proficient in utilizing AutoCAD, Manual J Software, and advanced Excel/SharePoint for data management and analysis.

Highest-signal resume keywords

HVAC Load CalculationsAutoCADAdvanced Excel ProficiencyEffective Communication SkillsAttention to Detail

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

HVAC Load CalculationsDuct SizingSystem SizingThermodynamicsFluidsMaterial ScienceCircuitsManual J SoftwareWrightsoft-WrightdrawRESCheck

Soft Skills

Attention to DetailDeadline-OrientedEfficient Time ManagementEffective Interpersonal SkillsExcellent Verbal/Written Communication

Tools & Technologies

AutoCADREVITExcelSharePointREMrate

Certifications & Qualifications

BS Degree in Mechanical EngineeringEIT (Incentive Offered)

Industry Keywords

ACCA StandardsIECCResidential Design

About the role

Key responsibilities & impact

Perform and review HVAC load calculations, duct sizing, and system sizing per ACCA Standards
Provide support to analysis team
Communicate any auditing areas to Management and provide options for resolution
Organize scope into major categories to outline deliverables and milestones
Determine primary timetable for deliverables
Modify critical paths based on prevailing conditions
Develop workarounds to overcome obstacles in the critical path
Integrate, review, and validate critical relationships with primary parties
Receive and understand client constraints
Modify and adjust to Manual J Software, AutoCAD, Wrightsoft-Wrightdraw, RESCheck, and REMrate
Manage and control all data through Excel and SharePoint
Interface with Operations, Owners, and Subcontractors to discuss impact of work and resolution of problems
Understand current IECC and state codes for Residential Design

Requirements

What you’ll need

BS Degree in Mechanical Engineering or relevant field is required with a GPA of 3.0 or above
Relevant coursework includes but is not limited to the following: Thermodynamics, Fluids, HVAC, Material Science, and Circuits
EIT is NOT required but salary incentive will be offered to those who obtain it
AutoCAD or REVIT experience during college is a PLUS
Advanced Proficiency in Excel/SharePoint
Strong Attention to Detail
Deadline-Oriented
Efficient Time Management Skills
Effective Interpersonal Skills
Excellent Verbal/Written Communication Skills
Ability to read/write/comprehend technical instructions
Uses E-Verify to confirm the identity and employment eligibility of all new hires

Benefits

Comp & perks

20 Annual Paid Days Off (12 Days of PTO, Birthday PTO, & 7 Company Paid Holidays)
Company Sponsored Medical Insurance that includes a contribution of up to 50% off the monthly premium
Dental & Vision Insurance
401(k) Retirement Plan with up to a 4% company match vested immediately
Basic Life & Supplemental Life
Short-Term & Long-Term Disability
Accident & Pet Insurance
Corporate Sponsored Events
Paid Professional Development & Salary Incentives through Learning/Certification Opportunities