Mechanical Engineer II

3MD Inc.; Washington (District of Columbia); On-site; USD 70,000 - 90,000; Full time

Job summary

3MD Inc. is seeking a Mechanical Engineer II to perform design, modeling, and analysis of mechanical systems, assemblies, and automated equipment in industrial environments.

You will lead small to mid-sized design projects, troubleshoot complex issues, update documentation, and support fabrication, installation, and commissioning activities. Proficiency in 3D CAD and drawing creation, BOM development, and tolerance analysis is required.

Qualifications

• Bachelor’s degree in Mechanical Engineering or related field.
• Proficiency in 3D CAD modeling and drawing creation.
• Ability to design and modify mechanical components, assemblies, and layouts.
• Experience with conveyors, pneumatics, or automation equipment preferred.
• Familiarity with PDM/PLM tools is preferred.
• Strong troubleshooting and analytical skills.
• Effective communication with operations and engineering teams.
• Ability to manage small to mid-sized mechanical work packages with limited supervision.
• Strong documentation practices and attention to detail.

Responsibilities

• Independently design mechanical assemblies, mechanisms, and equipment for small to mid-sized projects
• Develop 3D models, detailed drawings, and bills of material in accordance with company standards
• Conduct troubleshooting and root-cause analysis of mechanical failures or performance issues
• Support fabrication, assembly, FAT/SAT, and field integration of new or upgraded equipment
• Perform tolerance analysis, component sizing, and material selection
• Assist in defining project mechanical requirements, timelines, and technical scope
• Provide guidance and informal mentoring to Engineers and Technicians
• Ensure compliance with safety standards, mechanical codes, and engineering best practices

Skills

3D CAD

Troubleshooting

Documentation

Communication

Teamwork

Education

Bachelor’s degree in Mechanical Engineering or related field

Tools

SolidWorks

Inventor

Onshape

SolidWorks PDM

Windchill

Arena

Job description

Benefits

U.S.-based employees have access to medical, dental, and vision insurance, a 401(k) plan and company contribution, short-term and long-term disability coverage, basic life insurance, and wellbeing benefits, among others. U.S.-based employees also receive, per calendar year, up to 6 scheduled paid holidays. Additionally, eligible hourly/non-exempt and exempt employees accrue up to 112 hours of PTO based on years of service and may annually take up to 8 hours of paid volunteer time. Additional paid sick leave is also provided if required by state or local law.

Summary of Position

The Mechanical Engineer II performs design, modeling, and analysis work on mechanical systems, assemblies, and automated equipment. This role is responsible for executing small to mid-sized mechanical design projects, troubleshooting complex system issues, updating documentation, and supporting fabrication, installation, and commissioning activities. Mechanical scope may include structural frames, conveyor systems, tooling, guarding, mechanisms, and automation equipment used in industrial environments.

Essential Functions

• Independently design mechanical assemblies, mechanisms, and equipment for small to mid-sized projects
• Develop 3D models, detailed drawings, and bills of material in accordance with company standards
• Conduct troubleshooting and root-cause analysis of mechanical failures or performance issues
• Support fabrication, assembly, FAT/SAT, and field integration of new or upgraded equipment
• Perform tolerance analysis, component sizing, and material selection
• Assist in defining project mechanical requirements, timelines, and technical scope
• Provide guidance and informal mentoring to Engineers and Technicians
• Ensure compliance with safety standards, mechanical codes, and engineering best practices

Competencies

1. Ensures Accountability
2. Tech Savvy
3. Communicates Effectively
4. Values Differences
5. Customer Focus
6. Resourcefulness
7. Drives Results
8. Plans and Prioritizes
9. Decision Quality
10. Self-Development

Work Environment

This position is based in a professional office setting and regularly utilizes workplace technology, including computers, smartphones, multifunction printers, cloud-based filing systems, and collaboration tools.

Physical Demands

This role requires physical capabilities that support the successful execution of key responsibilities. The employee regularly engages in verbal and written communication with colleagues and clients to address project-related inquiries and must be able to convey accurate information clearly and efficiently. The position involves remaining seated at a workstation for approximately 75% of the time, with occasional movement throughout the office to access equipment, supplies, and shared resources. Daily tasks include consistent use of computers and standard office technology such as keyboards, printers, and multifunction devices. The role also involves transporting equipment boxes weighing up to 25 pounds within the building and to other offsite locations as needed for project support.

Required Education and Experience

Bachelor’s Degree3-5 years of experience

Qualifications

• Bachelor’s degree in Mechanical Engineering or related field
• Proficiency in 3D CAD (e.g., SolidWorks, Inventor, Onshape) modeling and drawing creation for mechanical systems
• Ability to design and modify mechanical components, assemblies, and layouts
• Ability to adapt to new tools, design methodologies, and manufacturing technologies
• Familiarity with PDM/PLM (e.g., SolidWorks PDM, Windchill, Arena) tools and workflows is preferred
• Familiarity with conveyors, pneumatics, or automation equipment is preferred
• Solid troubleshooting and analytical skills
• Effective communication with operations, engineering teams, and customer contacts
• Ability to manage small and mid-sized mechanical work packages with limited supervision
• Strong documentation practices and attention to detail

AAP/EEO Statement

3MD Inc. is an equal opportunity employer and does not discriminate based on gender, sex, age, race and color, religion, marital status, national origin, disability, sexual orientation, gender identity or expression, veteran status or any other category that is protected by applicable law.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.