HVAC Principal Designer

📍 Job Overview

Job Title: HVAC Principal Designer

Company: iParametrics LLC

Location: Greenville, SC, US

Job Type: Full Time

Category: Engineering & Design Operations

Date Posted: 2026-04-13T21:54:00

Experience Level: 10+ Years

Remote Status: On-site

🚀 Role Summary

• This role is critical for supporting significant infrastructure projects, focusing on the design and implementation of complex HVAC systems within specialized environments like nuclear facilities.

• The position demands a high level of technical expertise in Computer-Aided Design (CAD) and 3D modeling, with an emphasis on producing detailed design drawings and models with minimal supervision.

• Responsibilities extend beyond pure design to include project estimation, scheduling, and ensuring strict adherence to federal and industry-specific codes and standards.

• The role requires a proactive approach to field verification, problem-solving, and the ability to mentor and guide other designers, ensuring quality and efficiency in design deliverables.

📝 Enhancement Note: While the provided job title is "HVAC Principal Designer," the description and AI-generated skills indicate a broader scope within engineering design operations, particularly within the context of large-scale, regulated projects. The emphasis on "design drawings," "3D models," and "field systems walkdown" points to a role focused on the operationalization of engineering plans, making it relevant to operations professionals interested in the lifecycle of complex infrastructure.

📈 Primary Responsibilities

• Originate and produce highly complex 3D models and design drawings using advanced CAD applications, adhering to project-specific standards and engineering requirements.

• Conduct field walkdowns with minimal guidance to interpret existing systems, gather necessary data, and translate findings into accurate design modifications or new drawings.

• Develop comprehensive project estimates, detailed schedules, and staffing requirements, ensuring alignment with project scope and timelines.

• Create and maintain progress reports, key quantities tracking, and project scope documentation to facilitate effective project management and communication.

• Direct, check, and approve design work performed by other designers, ensuring technical accuracy, compliance, and overall quality of deliverables.

• Interpret and apply federal (including Department of Energy Orders), state, and local codes and standards relevant to specialized engineering design, particularly in nuclear or similar regulated environments.

• Collaborate with engineering teams to understand design intent and translate it into constructible and maintainable HVAC systems.

• Utilize technical drawing and drafting skills to produce clear, concise, and accurate design documentation for construction and implementation teams.

📝 Enhancement Note: The responsibilities highlight a blend of technical design execution and project management support, typical for a Principal Designer role in large engineering firms. The emphasis on "federal codes," "DOE Orders," and "nuclear" suggests a strong focus on compliance and rigorous process adherence, aligning with the operational demands of such projects.

🎓 Skills & Qualifications

Education:

Experience:

• A minimum of fifteen (15) years of combined education and experience in drafting and design, with a strong preference for experience in nuclear engineering and construction.

Required Skills:

• HVAC Design Expertise: Deep understanding of HVAC principles, system design, and application within complex industrial or specialized environments.

• Computer-Aided Design (CAD): Highly skilled proficiency in CAD software for originating and producing drawings and 3D models.

• 3D Modeling: Proven experience with 3D modeling, with specific preference for experience in SmartPlant 3D (S3D).

• Technical Drawing & Drafting: Ability to interpret and generate design drawings of moderate to advanced complexity with minimal supervision.

• Field Systems Walkdown: Competence in conducting field assessments, interpreting existing systems, and translating findings into design documentation.

• Code & Standards Compliance: Working knowledge of federal (including Department of Energy Orders), state, and local codes and standards applicable to specialized engineering design.

• Project Estimation & Scheduling: Ability to develop estimates, schedules, and staffing requirements for design projects.

• Problem-Solving: Aptitude for diagnosing and resolving complex design challenges in the field and in the design phase.

Preferred Skills:

• Nuclear Engineering Design: Specific experience in designing systems for nuclear facilities, understanding the unique requirements and safety protocols.

• Project Scope Management: Experience in defining project scope of services, scope of facilities, and tracking key quantities.

• Progress Reporting: Ability to generate progress reports and key quantities tracking reports.

• Mentorship & Quality Assurance: Experience in directing, checking, and approving work done by other designers, ensuring adherence to quality standards.

• Interdisciplinary Coordination: Familiarity with coordinating HVAC designs with other engineering disciplines (electrical, structural, etc.).

📝 Enhancement Note: The requirement for 15 years of experience and an associate degree, combined with the "Principal" title, indicates a senior-level role. The emphasis on specific software (S3D) and regulatory knowledge (DOE Orders) is crucial for candidates to highlight. The "10+" AI-derived experience level is a conservative estimate; the stated 15 years is more precise.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Complex Design Deliverables: Showcase examples of detailed HVAC design drawings, schematics, and 3D models for complex projects, demonstrating proficiency in CAD and modeling software (S3D preferred).

• Project Scope Documentation: Include samples of project scope of services, scope of facilities, or similar documentation that outlines project parameters and deliverables.

• Estimation & Scheduling Artifacts: Present examples of project estimates, schedules, and staffing plans developed for engineering or construction projects.

• Compliance & Standards Integration: Highlight instances where federal, state, or local codes and standards (especially DOE Orders) were a critical factor in the design process and how compliance was achieved.

Process Documentation:

• Workflow Design & Optimization: Demonstrate experience in designing efficient workflows for HVAC system development, from initial concept to final design documentation, including how to originate and produce drawings of moderate to advanced complexity.

• Field Integration & Verification: Provide examples of processes used for field system walkdowns, data interpretation, and translating field findings into design updates or new drawings.

• Quality Assurance & Review: Illustrate processes for checking and approving work done by other designers, ensuring accuracy, completeness, and adherence to project requirements.

• Reporting & Tracking: Showcase methods for tracking key project quantities, generating progress reports, and managing project scope documentation effectively.

📝 Enhancement Note: For a Principal Designer role, a portfolio is essential. It should not only showcase technical output but also demonstrate the candidate's ability to manage the design process, estimate resources, and ensure compliance within regulated environments like nuclear facilities. The emphasis should be on demonstrating leadership and comprehensive project lifecycle involvement.

💵 Compensation & Benefits

Salary Range:

• Based on industry standards for a Principal HVAC Designer with 15+ years of experience in Greenville, SC, particularly supporting federal projects (like SRPPF), the estimated annual salary range is $115,000 - $150,000+. This estimate considers the specialized nature of the work (nuclear), the seniority of the role, and the cost of living in the Greenville, SC area.

Benefits:

• Comprehensive Health Insurance: Medical, dental, and vision coverage.

• Retirement Savings Plan: 401(k) with potential company match.

• Paid Time Off: Vacation, sick leave, and holidays.

• Professional Development: Opportunities for continued learning, certifications, and training relevant to engineering design and compliance.

• Life and Disability Insurance: Standard employer-provided insurance policies.

• Project-Specific Incentives: Potential for project completion bonuses or performance-based incentives, given the nature of the SRPPF project.

Working Hours:

• Standard full-time hours are typically 40 hours per week. However, given the project-driven nature and potential for extended work on critical tasks, overtime may be required.

📝 Enhancement Note: The salary range is an estimate based on publicly available data for similar roles in the specified region and industry, factoring in the extensive experience and specialized knowledge required. Benefits are standard for full-time roles in engineering firms supporting large government contracts.

🎯 Team & Company Context

🏢 Company Culture

Industry: Engineering Services, Construction Support, Government Contracting (specifically supporting nuclear facilities).

Company Size: iParametrics LLC is a medium-sized company, typically employing between 200-500 individuals. This size often allows for a balance between structured processes and a more agile, team-oriented approach.

Founded: iParametrics LLC was founded in 1995. With nearly three decades of operation, the company has established a solid track record and deep expertise in its service areas.

Team Structure:

• Project-Based Teams: Designers will likely work within project-specific teams, collaborating closely with engineers, project managers, and potentially other disciplines.

• Reporting Hierarchy: The Principal Designer will report to a Senior Engineering Manager or Project Director, with direct oversight of other designers working on their assigned tasks.

• Cross-Functional Collaboration: Close collaboration is expected with Fluor personnel, engineering leads, safety officers, and potentially client representatives (DOE) to ensure project success and compliance.

Methodology:

• Rigorous Design Process: Emphasizes adherence to strict design protocols, quality assurance checks, and regulatory compliance, especially critical for nuclear projects.

• Data-Driven Decision Making: Designs and project plans are informed by detailed analysis of site conditions, engineering specifications, and regulatory requirements.

• Workflow Optimization: Focus on efficient use of CAD/3D modeling tools and clear documentation to streamline the design and review process.

• Client-Centric Approach: Prioritizes meeting client (Fluor, DOE) requirements and project objectives with precision and reliability.

Company Website: https://www.iparametrics.com/

📝 Enhancement Note: Supporting Fluor on the SRPPF project places iParametrics within the high-stakes environment of federal government contracting and nuclear facility development. This implies a culture of precision, safety, and strict adherence to procedures.

📈 Career & Growth Analysis

Operations Career Level: Principal Designer represents a senior-level individual contributor role. It signifies mastery in a specific technical discipline (HVAC design) and the ability to lead design efforts, mentor junior staff, and contribute to project strategy from a technical perspective. This role is typically a peak technical career path, offering significant influence without necessarily moving into direct people management.

Reporting Structure: The Principal Designer will report to a senior management or project leadership role, likely a Director of Engineering or Project Manager. They will, in turn, provide technical direction and oversight to junior designers and drafters working on their assigned project segments.

Operations Impact: The role's impact is substantial. Accurate and compliant HVAC design is crucial for the functionality, safety, and operational efficiency of facilities like SRPPF. Errors or non-compliance can lead to significant project delays, cost overruns, and safety risks. The Principal Designer's work directly influences the constructability, maintainability, and long-term performance of critical systems.

Growth Opportunities:

• Technical Specialization: Deepen expertise in HVAC design for specialized environments (e.g., nuclear, hazardous material handling) through advanced projects and training.

• Project Leadership: Transition into roles like Lead Designer, Technical Lead, or even Project Manager for smaller design packages, leveraging design experience to manage broader project aspects.

• Mentorship & Training: Develop leadership skills by formally mentoring junior designers, contributing to internal training programs, and becoming a subject matter expert.

• Cross-Disciplinary Exposure: Gain exposure to other engineering disciplines and project management functions through continued involvement in complex, multi-disciplinary projects.

• Industry Certifications: Pursue advanced certifications relevant to HVAC design, project management, or nuclear engineering standards.

📝 Enhancement Note: The "Principal" title suggests a career plateau for technical specialists, but growth can occur through increased scope of responsibility, leadership in mentoring, and managing larger or more complex design packages. The connection to Fluor and the SRPPF project offers exposure to high-profile, impactful work.

🌐 Work Environment

Office Type: The role is based in Greenville, SC, implying a professional office environment typical for engineering and design firms. This environment is likely to be structured, with dedicated workspaces and collaborative areas.

Office Location(s): Greenville, South Carolina. This location is a growing hub for various industries, including advanced manufacturing and engineering, offering a stable base for operations.

Workspace Context:

• Collaborative Spaces: The office will likely feature meeting rooms and common areas designed for team discussions, design reviews, and cross-functional collaboration.

• Technology-Rich Environment: Access to high-performance workstations, advanced CAD/3D modeling software, and robust network infrastructure is expected.

• Team Interaction: Regular opportunities to interact with fellow designers, engineers, project managers, and potentially client representatives from Fluor and the DOE. The emphasis on field walkdowns also means time will be spent on-site at project locations.

Work Schedule: Standard full-time, on-site schedule. While 40 hours per week is typical, project deadlines may necessitate flexible hours or occasional overtime to ensure timely delivery of critical design documents and project milestones.

📝 Enhancement Note: The on-site requirement in Greenville, SC, combined with the nature of supporting a major federal project, suggests a professional, focused work environment where collaboration and adherence to project timelines are paramount.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: HR or recruiter will review applications for basic qualifications, particularly U.S. citizenship and minimum experience.

• Technical Interview: A panel interview with engineering leads and potentially senior designers. This will involve in-depth discussions about HVAC design principles, CAD/3D modeling experience, code knowledge, and problem-solving scenarios.

• Portfolio Review: Candidates will be asked to present and discuss their portfolio, highlighting specific projects, design challenges, solutions, and their role in the process. This is a critical stage to demonstrate practical application of skills.

• Behavioral & Situational Assessment: Questions will assess teamwork, communication, ability to handle pressure, and fit with the company and project culture.

• Final Interview: May involve senior management or client representatives (Fluor) for a final assessment of technical fit and project suitability.

Portfolio Review Tips:

• Focus on Complexity: Showcase projects that demonstrate your ability to handle complex HVAC design challenges, particularly in regulated or industrial settings.

• Highlight S3D Proficiency: If you have S3D experience, ensure specific projects utilizing it are prominent. Detail your role and achievements within those projects.

• Quantify Achievements: Wherever possible, use metrics to describe your impact, such as "reduced design time by X%," "identified Y cost savings through design optimization," or "ensured compliance with Z critical DOE orders."

• Structure Your Presentation: Organize your portfolio logically, perhaps by project type or by the skills demonstrated. Be prepared to walk through the design process for a key project, explaining your contributions from concept to completion.

• Demonstrate Problem-Solving: Select at least one project where you faced a significant design challenge and articulate how you approached and resolved it.

Challenge Preparation:

• Technical Scenarios: Be ready for hypothetical design problems related to HVAC systems in nuclear facilities. Consider factors like ventilation, filtration, temperature control, and safety interlocks.

• Code Application: Prepare to discuss how you would apply specific DOE Orders or other relevant codes to a given design scenario.

• CAD/3D Modeling Tasks: While not always included, be prepared for a potential exercise or discussion on specific software functionalities or modeling techniques.

• Project Management Aspects: Understand how to estimate resources, schedule tasks, and track progress for design work.

📝 Enhancement Note: The emphasis on U.S. citizenship, 15 years of experience, and specific software (S3D) means the screening process will be rigorous. A well-curated portfolio demonstrating these specific requirements is crucial for advancing.

🛠 Tools & Technology Stack

Primary Tools:

• SmartPlant 3D (S3D): Highly preferred for 3D modeling, design, and data management in complex projects. Proficiency in this tool is a significant advantage.

• AutoCAD / AutoCAD Plant 3D: Standard CAD software for generating 2D drawings and potentially 3D models.

• Revit MEP: While not explicitly mentioned, it's a common BIM tool for mechanical, electrical, and plumbing design that may be used for certain project aspects or integrations.

• Navisworks: For model aggregation, clash detection, and 4D/5D simulation, often used in large-scale projects.

Analytics & Reporting:

• Microsoft Excel: Essential for data analysis, creating estimates, tracking quantities, and generating reports.

• Project Management Software: Tools like Primavera P6 or Microsoft Project may be used for scheduling and progress tracking, depending on Fluor's standard practices.

CRM & Automation:

• While not directly customer-facing, CRM principles of data management and process efficiency apply to design databases and project documentation systems.

• Document Management Systems (DMS): Such as SharePoint, ProjectWise, or proprietary client systems, for managing design documents, revisions, and approvals.

📝 Enhancement Note: S3D is highlighted as a key preference. Candidates should be prepared to discuss their experience with this specific platform in detail, including its capabilities for design, modeling, and data management in complex engineering environments.

👥 Team Culture & Values

Operations Values:

• Safety First: Paramount in nuclear and government contracting environments. A commitment to safety protocols and risk mitigation in all design activities.

• Integrity & Compliance: Upholding the highest ethical standards and ensuring strict adherence to all applicable federal, state, and client regulations (e.g., DOE Orders).

• Excellence in Design: Striving for precision, accuracy, and optimal solutions in all engineering and design deliverables, reflecting a commitment to technical quality.

• Collaboration & Teamwork: Fostering a cooperative environment where designers, engineers, and project managers work together effectively to achieve shared project goals.

• Accountability: Taking ownership of responsibilities, design decisions, and project outcomes, demonstrating reliability and commitment.

Collaboration Style:

• Cross-Functional Integration: Expect a highly collaborative environment where HVAC designers work closely with mechanical engineers, electrical engineers, structural engineers, safety specialists, and project managers.

• Process-Driven Feedback: A culture that encourages constructive feedback and peer review to ensure design quality and compliance.

• Knowledge Sharing: Encouragement of sharing best practices, lessons learned, and technical expertise, especially within project teams and across different disciplines.

• Client-Focused Communication: Regular communication with Fluor and potentially DOE representatives to ensure alignment on design requirements, progress, and any necessary adjustments.

📝 Enhancement Note: The values and collaboration style are heavily influenced by the industry (nuclear, government contracting) and the client (Fluor). Expect a formal, process-oriented, and highly collaborative environment where technical rigor and safety are prioritized.

⚡ Challenges & Growth Opportunities

Challenges:

• Navigating Complex Regulations: The primary challenge will be consistently applying and adhering to stringent federal regulations, particularly Department of Energy Orders, which are critical for nuclear facility design.

• Interdisciplinary Coordination: Effectively coordinating complex HVAC designs with multiple engineering disciplines and ensuring all components integrate seamlessly within the overall facility design.

• Field Verification in Sensitive Areas: Conducting field walkdowns in potentially hazardous or restricted areas requires strict safety protocols and careful planning.

• Legacy Systems & Modernization: Potentially working with or designing around existing infrastructure, requiring creative solutions to integrate new systems with older designs.

• Meeting Aggressive Project Schedules: Balancing the need for meticulous design accuracy with demanding project timelines common in large-scale federal projects.

Learning & Development Opportunities:

• Specialized Nuclear Design Training: Access to training specific to nuclear facility design requirements, safety protocols, and relevant DOE Orders.

• Advanced Software Proficiency: Opportunities to deepen expertise in S3D and other advanced design and modeling tools used in the industry.

• Project Management Fundamentals: Exposure to project management methodologies and tools through close collaboration with project managers.

• Mentorship from Senior Experts: Learning from experienced Principal Designers and engineers within iParametrics and potentially Fluor.

• Industry Conferences & Seminars: Potential for attending relevant industry events focused on HVAC design, nuclear engineering, or large-scale project management.

📝 Enhancement Note: The challenges are directly related to the specialized nature of the project. Growth opportunities will focus on deepening technical expertise in this niche and potentially expanding into project coordination or leadership roles within the design discipline.

💡 Interview Preparation

Strategy Questions:

• Scenario-Based Design: "Describe how you would approach the HVAC design for a critical containment area within a nuclear facility, considering ventilation, filtration, and safety interlocks." (Focus on process, codes, and system integration).

• Code Application: "How would you ensure compliance with DOE Order X.Y regarding air quality in a processing facility, and what documentation would you generate?" (Demonstrate knowledge of regulatory frameworks).

• 3D Modeling & CAD Workflow: "Walk me through your process for creating a complex HVAC system model in S3D, including clash detection and coordination with other disciplines." (Highlight efficiency and problem-solving within software).

Company & Culture Questions:

• Project Alignment: "Why are you interested in supporting the SRPPF project specifically, and what do you understand about its significance?" (Show enthusiasm and research).

• Teamwork & Collaboration: "Describe a time you had to collaborate with engineers from different disciplines on a complex project. What challenges did you face, and how did you overcome them?" (Assess collaboration style).

• Handling Pressure: "How do you manage conflicting priorities or tight deadlines in a design role?" (Evaluate stress management and prioritization).

Portfolio Presentation Strategy:

• Project Selection: Choose 2-3 projects that best showcase your HVAC design skills, S3D experience, and experience with complex or regulated environments.

• Process Narrative: For each project, clearly articulate the problem, your specific role and contributions, the design process you followed, the tools you used (especially S3D), the challenges you encountered, your solutions, and the final outcome (quantify if possible).

• Code Integration: Explicitly mention how you incorporated relevant codes and standards (DOE Orders) into your design decisions.

• Visual Aids: Use clear drawings, screenshots of 3D models, and diagrams to illustrate your points effectively.

• Be Ready for Deep Dives: Anticipate detailed questions about your design choices, calculations, and software techniques.

📝 Enhancement Note: The interview process will heavily scrutinize your technical expertise, specifically in HVAC design for regulated industries, and your proficiency with S3D. A strong portfolio that directly addresses these requirements is paramount.

📌 Application Steps

To apply for this operations position:

• Submit your application through the provided ADP link.

• Tailor Your Resume: Emphasize your 15+ years of experience in drafting/design, specifically highlighting HVAC, engineering, construction, and any nuclear-related projects. Clearly list your proficiency with CAD software, especially S3D.

• Curate Your Portfolio: Compile a portfolio that showcases complex HVAC design drawings, 3D models (S3D preferred), and examples of project estimation, scheduling, and compliance documentation. Prepare to present this with a clear narrative of your contributions and problem-solving approach.

• Research iParametrics & Fluor: Understand iParametrics' role in supporting Fluor on the SRPPF project. Research Fluor's typical project execution methodologies and the significance of the SRPPF.

• Prepare for Technical Scrutiny: Be ready to discuss specific HVAC design challenges, code applications (DOE Orders), and your workflow in CAD/3D modeling software during interviews.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.