Mechanical Engineer

People are at the heart of our success. We actively seek out individuals from diverse backgrounds who share our values and commitment to forward-thinking design.
If this sounds like you, let’s talk.

It’s a privilege to be a part of OTJ’s diverse group of professionals. The firm’s values align my own and make for an inspiring culture of design excellence.

We advocate for wellness and celebrate the successes of all our people.

Our vibrant culture is focused on wellness, work-life balance, as well as the opportunity to bond with fellow team members and grow professionally together. We offer a rich benefits package that includes fully paid medical and long-term disability coverage as well as dental, vision, and supplemental insurance plans.

We are 100% employee owned! Additional perks include a generous 401k/Roth contribution as well as flexible spending and commuter benefits. We support professional development by reimbursing fees, providing time off to study, curating lunch and learns and access to CEUs, as well as offering leadership training.

OTJ’s culture is refreshingly healthy in an industry where work-life balance often suffers. I appreciate working alongside other young parents, like me, who support each other to make sure no one has to comprise on time with our families.

We promote a culture of inclusion where all are welcomed and valued.

Of Surveyed Team Members Agree OTJ Supports the Free Expression of Beliefs

Of Surveyed Team Members Agree OTJ is an Inclusive Workplace

Of Surveyed Team Members Agree OTJ is an Equitable Workplace

OTJ supports and prioritizes work-life balance. Thanks to this flexibility, I can thrive in both my career and family life. OTJ’s benefits are generous, which also leaves me secure in knowing that I’m providing the best for my family.

Jireh Klein
PHR, SHRM-CP, Senior Associate & Director of HR

If you share our values and commitment to forward-thinking design, let’s talk.

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Position:Mechanical Engineer

Location: Washington, DC

Job :188

# of Openings:1

Mechanical Engineer

(Hybrid)

Job Description:

OTJ is looking for an experienced Mechanical Engineer who is PE certified in Washington, D.C. This role focuses on the planning, design, and execution of mechanical systems for a wide range of building and infrastructure projects. The ideal candidate has strong technical expertise, experience, and a collaborative mindset suited for multidisciplinary AEC environments.
Responsibilities:

• Serve as Engineer of Record (EOR) for Mechanical design projects, including sealing and signing construction documents
• Design and document mechanical systems for commercial, institutional, healthcare, higher education, mixed-use, and/or government facilities
• Produce and review drawings, specifications, calculations, and technical narratives
• Coordinate closely with architects, structural, civil, and MEP engineering teams throughout design development and construction
• Participate in QA/QC reviews to ensure technical accuracy and firm standards are met
• Support construction administration services, including shop drawing and submittal reviews, RFI responses, site visits, field observations, and closeout documentation
• Interface with AHJs and utility providers across MD, VA, and DC for permitting and design approvals
• Mentor junior engineers and designers; provide technical oversight and guidance
• Support project management activities such as scope development, scheduling, and fee estimates
• Contribute to proposals, interviews, and business development efforts as needed

• Bachelor’s degree in mechanical engineering (ABET-accredited)
• 5–10 years of experience in mechanical engineering within an AEC consulting environment
• Active PE license in Maryland, Virginia, and Washington, DC
• Strong working knowledge of NFPA, ICC, ASHRAE, and local jurisdictional codes
• Proficiency in Revit and AutoCAD
• Proficiency in Trane Trace 700 Load Calculation Software.
• Experience coordinating within BIM and multidisciplinary design teams
• Excellent communication, documentation, and…