Principal Mechanical Engineer

EC Source Services, LLC

Principal Mechanical Engineer overseeing mechanical engineering for substations and infrastructure. Leading project teams and ensuring design excellence in energy infrastructure.

Posted 5/13/2026full-timeRemote • 🇺🇸 United StatesLeadWebsite

About the role

Key responsibilities & impact

Serve as the technical authority and discipline lead for all mechanical engineering aspects of power delivery projects.
Oversee and review the design of HVAC systems, oil containment, cooling systems, piping, conduit supports, equipment enclosures, and other mechanical components for substations and related facilities.
Lead the development and review of calculations, specifications, design drawings, and construction documentation.
Provide mechanical design guidance for transformer installations, gas-insulated substations (GIS), and high-voltage equipment layouts.
Support thermal and ventilation studies, ensuring that substation environments maintain safe and efficient operating conditions.
Collaborate with civil, electrical, and structural teams to deliver fully integrated and constructible design solutions.
Conduct site visits and field assessments to collect data, verify conditions, and support construction and commissioning activities.
Manage project scopes, schedules, budgets, and deliverables to ensure high-quality and timely completion.
Lead the development of standards, procedures, and best practices for mechanical design in power delivery applications.
Mentor and provide technical guidance to mechanical engineers, designers, and CAD technicians.
Serve as a client-facing technical expert, presenting engineering solutions, addressing complex challenges, and supporting business development activities.
Ensure adherence to QA/QC procedures, safety standards, and applicable codes (ASME, NFPA, API, IEEE, and NESC).

Requirements

What you’ll need

Bachelor’s degree in Mechanical Engineering ( Master’s degree preferred).
10+ years of mechanical engineering experience in power delivery, substations, or energy infrastructure.
Professional Engineer (P.E.) license required preferred.
Strong understanding of fluid mechanics, heat transfer, and mechanical systems for substation or industrial facilities.
Proficiency with design and analysis software such as AutoCAD, Revit, CFD, Pipe-Flo, or Thermoflow.
FEA software proficiency: Expertise in using FEA software (e.g., ANSYS and/or SolidWorks), modeling CAD software.
In-depth knowledge of industry standards (ASME, NFPA, API, IEEE, NESC, and IEC).
Proven experience in project management, team leadership, and client relations.
Excellent analytical, organizational, and communication skills.
Ability to manage multiple complex projects and guide cross-disciplinary teams to successful outcomes.

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account EC Source Services, LLC Website LinkedIn All Job Openings 201 - 500 employees ⚡ Energy 🤝 B2B Energy
B2B EC Source Services, LLC is a construction solution provider and subsidiary of MasTec that engineers, procures, and constructs utility infrastructure projects. The company specializes in transmission, distribution, and substation work — including overhead and underground transmission systems, substations, switchyards, and EPC services — and handles projects ranging from large multi-state EHV transmission lines to smaller distribution and restoration work. EC Source Services operates nationwide and provides labor, equipment, testing, and commissioning for utility clients, with offices in Houston, Mesa, Sacramento, Gaffney, and Schertz. Principal Mechanical Engineer 🔥 36 minutes ago 🇺🇸 United States – Remote ⏰ Full Time 🔴 Lead 🧑‍🔧 Mechanical Engineer Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
Serve as the technical authority and discipline lead for all mechanical engineering aspects of power delivery projects.
Oversee and review the design of HVAC systems, oil containment, cooling systems, piping, conduit supports, equipment enclosures, and other mechanical components for substations and related facilities.
Lead the development and review of calculations, specifications, design drawings, and construction documentation.
Provide mechanical design guidance for transformer installations, gas-insulated substations (GIS), and high-voltage equipment layouts.
Support thermal and ventilation studies, ensuring that substation environments maintain safe and efficient operating conditions.
Collaborate with civil, electrical, and structural teams to deliver fully integrated and constructible design solutions.
Conduct site visits and field assessments to collect data, verify conditions, and support construction and commissioning activities.
Manage project scopes, schedules, budgets, and deliverables to ensure high-quality and timely completion.
Lead the development of standards, procedures, and best practices for mechanical design in power delivery applications.
Mentor and provide technical guidance to mechanical engineers, designers, and CAD technicians.
Serve as a client-facing technical expert, presenting engineering solutions, addressing complex challenges, and supporting business development activities.
Ensure adherence to QA/QC procedures, safety standards, and applicable codes (ASME, NFPA, API, IEEE, and NESC). 🎯 Requirements
Bachelor’s degree in Mechanical Engineering ( Master’s degree preferred).
10+ years of mechanical engineering experience in power delivery, substations, or energy infrastructure.
Professional Engineer (P.E.) license required preferred.
Strong understanding of fluid mechanics, heat transfer, and mechanical systems for substation or industrial facilities.
Proficiency with design and analysis software such as AutoCAD, Revit, CFD, Pipe-Flo, or Thermoflow.
FEA software proficiency: Expertise in using FEA software (e.g., ANSYS and/or SolidWorks), modeling CAD software.
In-depth knowledge of industry standards (ASME, NFPA, API, IEEE, NESC, and IEC).
Proven experience in project management, team leadership, and client relations.
Excellent analytical, organizational, and communication skills.
Ability to manage multiple complex projects and guide cross-disciplinary teams to successful outcomes. Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score Similar Jobs Electrical Design Engineer, AI Factory Deployment 🔥 5 hours ago NVIDIA 10,000+ employees 🤖 Artificial Intelligence 🎮 Gaming Website LinkedIn All Job Openings Electrical Design Engineer developing innovative power systems for AI Factories at NVIDIA. Collaborating with technical leads and internal teams on data center power standards and lifecycle management. 🇺🇸 United States – Remote 💵 $184k - $345k / year ⏰ Full Time 🟠 Senior 🔴 Lead 🧑‍🔧 Mechanical Engineer 🦅 H1B Visa Sponsor Flash Mechanical Design Engineer 🔥 10 hours ago Nebius Group 1001 - 5000 🏢 Enterprise ☁️ SaaS Website LinkedIn All Job Openings Mechanical Design Engineer designing and validating mechanical systems for AI-driven data centers. Collaborating with internal teams and vendors to ensure high-quality standards in infrastructure projects. 🇺🇸 United States – Remote 💵 $185k - $225k / year ⏰ Full Time 🟠 Senior 🔴 Lead 🧑‍🔧 Mechanical Engineer Hypersonic Airframe and Propulsion Design Engineer 🔥 14 hours ago North Wind 201 - 500 🚀 Aerospace 🔬 Science 🏛️ Government Website LinkedIn All Job Openings Hypersonic Airframe and Propulsion Design Engineer designing and analyzing hypersonic test systems. Role combines technical expertise in high-speed aerodynamics and propulsion system design. 🇺🇸 United States – Remote ⏰ Full Time 🟠 Senior 🔴 Lead 🧑‍🔧 Mechanical Engineer Mechanical Engineer 🕒 4 days ago Hammond & Associates 11 - 50 🤝 B2B ⚡ Energy Website LinkedIn All Job Openings Mechanical Engineer responsible for designing HVAC and plumbing systems, managing project scopes, and ensuring compliance with building codes. Requires extensive experience in MEP engineering and Revit proficiency. 🇺🇸 United States – Remote ⏰ Full Time 🟠 Senior 🔴 Lead 🧑‍🔧 Mechanical Engineer Mechanical Engineer 4 – NSSS Systems Design 🕒 4 days ago NuScale Power 201 - 500 Website LinkedIn All Job Openings Mechanical Engineer focused on NSSS System Design, performing engineering assignments and collaborating with multidisciplinary teams at NuScale Power. 🇺🇸 United States – Remote 💵 $127.1k - $153.4k / year ⏰ Full Time 🟠 Senior 🔴 Lead 🧑‍🔧 Mechanical Engineer 🦅 H1B Visa Sponsor View More Mechanical Engineer Jobs 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

mechanical engineeringHVAC systems designfluid mechanicsheat transfermechanical systemsproject managementcalculationsdesign drawingsconstruction documentationthermal and ventilation studies

Soft Skills

leadershipmentoringclient relationsanalytical skillsorganizational skillscommunication skillscollaborationproblem-solvingguidancetime management

Certifications

Bachelor’s degree in Mechanical EngineeringMaster’s degree in Mechanical EngineeringProfessional Engineer (P.E.) license