Sr. Mechanical Engineer HVAC Systems

Job Overview

APTIM is seeking senior-level engineers to join our team of engineering professionals serving our Government and Commercial programs.

Aptim is a leading provider in integrated, comprehensive services in a variety of markets and industry. We offer consulting, engineering, construction, scientific program and project management services to meet the customer needs in environmental and infrastructure markets. Our highly skilled multi-discipline teams of professionals are strategically located throughout the United States and abroad to efficiently provide safe and sustainable solutions to complex challenges faced by government, public institutions, and commercial clients.

Engineers will apply critical thinking skills to initial planning, procurement support, plan development, design, construction and commissioning phases of projects. APTIM expects our engineers to be creative problem solvers and actively look for the best way to support our varied Government and commercial clients. Engineers will often work on multiple projects simultaneously and perform other duties as required. This position will require prior knowledge of the engineering and construction industry. Understanding of corporate mechanisms such as scopes of work, construction safety protocols, and experience in a professional work environment. This position immediately offers opportunities for continuous growth while solving problems in the engineering and construction industry. Engineers typically serve the projects in both the field (domestic and international assignments) and the office, as necessary.

Key Responsibilities/Accountabilities:

• A seasoned experienced professional with a full understanding of mechanical engineering resolving a wide range of issues in creative ways.
• Experience in HVAC, ASHRAE, SMACNA & ACGIH Codes
• Building Load Calculation Software Trane Trace or Carrier HAP experience
• Duct sizing and pressure drop calculations.
• HVAC Equipment sizing and specifications, AHU's, DX Units, Chillers, Pumping systems, Cooling Towers, Boilers and Heat exchangers.
• Broad application of principles, theories and concepts in HVAC and mechanical engineering, plus working knowledge of other related fields
• Work with young engineering team members providing oversight and training.
• Provides resolution to a diverse scope and range of complex problems where analysis of data requires evaluation of identifiable factors
• Demonstrates good judgment in selecting methods and techniques for obtaining solutions
• Development of project design basis, development of specifications, and performance of detailed engineering.
• Ensures conformance to applicable engineering codes and standards as well as company policies and procedures.
• May perform in project leadership role and/or may supervise the activities of lower level personnel
• Contributes to a team environment. Perform detailed technical analysis of complex project issues.
• Break complex technical tasks into manageable subtasks.
• Travel to site locations to provide engineering support, meetings with clients, and meetings at other company offices to support engineering efforts.

Basic Qualifications:

• Requires Bachelor's or Master's Degree in Mechanical Engineering with 10 years related experience.
• Strong computer skills (Word, Excel, PowerPoint and technical engineering software, some CADD experience (AutoCAD, REVIT and/or MicroStation) along with good verbal and writing skills.
• Candidates must be willing to travel for infrequent field assignments.
• Mechanical, plumbing experience is a plus.
• Nuclear experience is a plus.
• Field experience is a plus.
• Construction experience and certifications a plus.
• Must be a US Citizen and be able to pass a background check to gain access to government facilities.
• PE is a requirement.
• Certified Energy Manager is a plus.
• Ability to work independently and in a diverse team setting.
• Willingness to work across Engineering disciplines.
• Strong multitasking skills
• Strong problem-solving skills

ABOUT APTIM
APTIM is committed to accelerating the transition toward a clean and efficient energy economy, building a sustainable future for our communities and natural world, and creating a more inclusive and equitable environment that celebrates the diversity of our communities. We specialize in environmental, resilience, and sustainability and energy solutions, as well as technical and data solutions, program management, and critical infrastructure. For every challenge our clients face, there is an opportunity for APTIM to innovate a fit-for-purpose solution that will raise your organization or community to a new standard of excellence.

What you can expect from APTIM:

• Work that is worthy of your time and talent
• Respect and flexibility to live a full life at work and at home
• Dogged determination to deliver for our clients and communities
• A voice in making our company better
• Investment into your personal and professional development

Employee Benefits

Aptim Federal Services is committed to providing an extensive range of benefits that protect and promote the health and financial well-being of our employees and their families through the APTIM Benefits Marketplace https://aptim.makeityoursource.com/.

• Medical, vision, and dental insurance: Through the marketplace, our employees can choose benefits from five metallic levels and 10 carriers to find the right benefits that work for them in their location.
• Life insurance
• Short-term and long-term disability insurance
• Paid holidays, vacation, and sick leave (eligibility based on company policy and applicable law)
• 401(k) APTIM offers three 401k plans through the Aon Pooled Employer Plan (PEP). The specific plan you are eligible for depends on the business unit you are in. The details of the largest plan are found here:
• APTIM 2025 401(k) Plan Features (makeityoursource.com)
• APTIM - Helpful Documents