WHAT DOES A MECHANICAL ENGINEER DO?
Reviewed by Lam Nguyen under Editorial Standards
Published: Jun 30, 2025 - The Mechanical Engineer applies engineering principles to design, develop, and maintain mechanical systems and components across multiple industries. This role involves utilizing CAD software, conducting simulations, and collaborating with cross-functional teams to ensure optimal functionality, safety, and efficiency. The engineer contributes to product innovation, process improvement, and the long-term reliability of engineering solutions.
A Review of Professional Skills and Functions for Mechanical Engineer
1. Mechanical Engineer Duties
- Product Development: Own design and development of product subsystems through a Phase Gate style Product Development Process
- Requirement Documentation: Create engineering requirements and documents to meet product requirements
- Test Planning: Write and execute test plans at the design and production phases
- Problem Solving: Troubleshoot and solve performance problems during development and in production
- Work Communication: Document and communicate work to technical leads and managers
- Data Analysis: Use data to drive engineering decision-making
- Change Management: Create and manage engineering changes for updates and improvements to existing products
- Supplier Collaboration: Collaborate with a global network of suppliers throughout development phases to ensure quality and performance
- Team Coordination: Collaborate with adjacent development teams to ensure design success, including industrial design, product management, and operations
- Design Control: Work with the drafting team to ensure appropriate product definition and design controls
2. Mechanical Engineer Details
- 3D Modeling: 3D CAD design of engineering and flight hardware
- FEA Analysis: Structural and thermal finite element analyses
- Engineering Drawing: Produce engineering drawings for assembly and manufacture, and define integration procedures
- FEM Preparation: Prepare FEMs for structural and thermal FEAs of large assemblies such as Patran/Nastran
- Mechanical Testing: Hands-on mechanical integration and test
- Product Management: Develop, coordinate, and monitor all aspects of the product
- Process Improvement: Suggest methods to improve operational efficiency
- Cross Collaboration: Work cross-functionally with different teams and organizations
3. Mechanical Engineer Responsibilities
- Soft Materials: Responsibility for mechanical engineering related to the development and integration of materials and mechanical engineering with soft goods (synthetics, gels, adhesives, and textiles/fabric)
- Manufacturing Design: Use extensive knowledge of soft goods assembly processes like cutting, bonding etc., to drive manufacturing considerations
- Design Analysis: Rigorous analyses on designs using appropriate methods such as FEA and dimensional tolerance analysis
- Automation Consideration: Consider automated production requirements as part of the design
- Component Testing: Drive component and integration testing to verify that prototypes and production components/constructs meet design intent
- Design Specification: Assess requirements and set the mechanical requirements for the design and development of consumables
- Production Documentation: Provide the data for a full production file (3D files, drawings of mechanical parts, assembly drawings and instructions, BOM)
- Supplier Liaison: Liaising with suppliers and production subcontractors
- Test Procedure: Producing and implementing designs and test procedures
- Design Validation: Perform the actual testing, evaluating, measuring, modifying and re-testing of the design
- Report Generation: Generate test reports and documentation
4. Mechanical Engineer Job Summary
- Tolerance Analysis: Perform complex RSS and Worst-Case Scenario Tolerance Analysis
- Cpk Review: Perform a detailed review and scrutinize the Cpk data from the supplier
- FMEA Process: Conduct DFMEA and PFMEA processes
- Process Support: Provide support to the manufacturing partner, including problem solving, process improvement and jig/fixture improvement
- Design Alignment: Bridge between Industrial Designer and Product Manager, to ensure requirements are met or agreed upon among all parties
- Cost Scheduling: Cooperate with the Project Manager to ensure the mechanical part cost and schedule are met within the project timeframe
- Team Collaboration: Work with a cross-functional team such as acoustic, hardware design, RF and regulatory certification
- Qualification Assurance: Provide solutions to ensure the product can meet the qualification requirements
- Criteria Assessment: Assess the acceptance criteria for mechanical features
5. Mechanical Engineer Accountabilities
- Component Design: Create and validate mechanical components/systems, taking care of their design and development
- Project Execution: Drive the execution of mechanical development projects/activities
- Design Validation: Develop detailed mechanical design and support test specifications to product-level validation
- Mechanical Testing: Test and evaluate mechanical designs and concepts to meet the specified functionality/features, quality and cost targets in cooperation with the laboratories
- Simulation Modeling: Develop designs and systems and validate through calculation/simulation modelling (CAE, MBD) and prototype/experimental testing
- Supplier Evaluation: Participate in supplier evaluation and selection
- Change Management: Monitor and commission changes to plant and systems (PLM, …) and support part/product approval
- Technical Documentation: Supply all technical input for product literature, BOM, labels, technical manuals, etc.
6. Mechanical Engineer Functions
- Staff Coaching: Coach and mentor staff and contribute to diagnosing more complex problems with machinery or equipment
- Quality Monitoring: Monitor the quality of work to ensure compliance with safety procedures and the safety of employees
- Priority Management: Resolve maintenance priorities based on established plans to ensure resources are used effectively and work schedules and targets are met
- Maintenance Supervision: Supervise maintenance activities to minimize production downtime and disruptions
- Personnel Management: Responsible for personnel decisions related to hiring, performance and disciplinary actions for direct reports
7. Mechanical Engineer Job Description
- Cross-Functional Work: Works on a cross-functional project team through all phases of the product development process
- Project Execution: Includes planning and executing projects or designs from concept through the launch
- Change Support: Support and/or lead product changes after launch based on the defined needs of the business
- User Collaboration: Work closely with other members of the project team and physicians to define user needs, generate design concepts and develop detailed designs
- Design Analysis: Performs design and analysis with limited guidance (such as tolerance analysis, FEA, DOE's, simulated use testing, etc.), and supports the development of product and process validation plans and testing
- 3D Modeling: Demonstrated aptitude for product development using 3-D modeling CAD while also showing hands-on aptitude and expertise in materials and component selection
- Customer Insight: Understands VOC (Voice of Customer) and the role it plays in making design decisions
- Design Documentation: Completes all necessary documentation related to design, verification and validation, and product transfer in compliance with applicable medical device regulations, engineering documentation processes, and the Company QMS
- Manufacturing Support: Works with manufacturing engineering and suppliers to understand the considerations associated with manufacturability
- Prototype Optimization: Works with other team members to produce prototypes and optimize designs for manufacturability and assembly
8. Mechanical Engineer Overview
- Project Delivery: Participate in the development and delivery of mechanical engineering turn-key projects, plant and R\&D process engineering specifications and deliverables
- Vendor Evaluation: Participate in the specification, evaluation and selection of vendor packages and plant equipment
- Mechanical Design: Hold responsibility for the design of all mechanical works
- Quality Assurance: Maintain the technical quality of work
- Cost Control: Maintain planning and cost control on the mechanical scope of work
- Technology Research: Participate actively in the business’s technology R\&D
- Code Compliance: Ensure that designs comply with the Codes, Standards, Regulations and Procedures
- Vendor Liaison: Liaise with subcontractors and vendors to develop, deliver and troubleshoot solutions for the technology
- Project Coordination: Liaise with project management teams to deliver new projects
- Operations Support: Support existing Operation and Commissioning teams, remotely and on-site
- Procurement Support: Support procurement for the mechanical department project and R\&D deliverables
- Facility Optimization: Define and lead optimisation activities at operational facilities
- Engineering Collaboration: Work closely with the other engineering disciplines to overcome difficulties and find the best approach for the solution
- Document Creation: Produce mechanical documentation from scratch
- Change Management: Ensure proper management of change, keeping documentation and design files up to date for both new and existing facilities
9. Mechanical Engineer Details and Accountabilities
- Engineering Execution: Perform a full range of engineering duties and project assignments based on general instructions and guidance from the supervisor or lead engineers
- Production Support: Daily production support for product lines
- Team Representation: Represent Current Product Engineering as a core team member on NPD and/or Sponsor Team projects
- Design Development: Design, develop, document and execute mechanical and/or electro-mechanical solutions for components and assemblies to meet company and departmental goals
- Problem Solving: Perform analysis and resolve issues using problem-solving techniques to develop new and innovative solutions for Customers
- Principle Application: Use mechanical engineering principles of statics, dynamics, thermodynamics, heat transfer, hydraulics, and material science to develop design solutions for medical devices
- CAD Modeling: Use 2D and 3D CAD software as well as other analysis software such as FEA (Finite Element Analysis)
- Technical Evaluation: Determines the technical feasibility of new product concepts
- Operations Support: Provide technical support to all functional areas of Operations and serve as liaison to Manufacturing for design-related product changes
- Failure Investigation: Perform analysis on returned product and perform investigations on Customer complaints
- Project Management: Provide Project Management resources for the Sponsor Team and/or appropriately sized projects for product enhancements
- Staff Mentoring: Train and mentor Engineers and Designers in Engineering principles
- Process Improvement: Participate in Lean and Continuous Improvement activities
- Data Presentation: Prepare and present project and/or technical data to management
10. Mechanical Engineer Tasks
- 3D Modeling: Creates, interprets, and corrects SolidWorks 3D models and 2D drawings
- Document Control: Creates or reviews and signs engineering document changes through the Engineering Change Notice (ECN) procedure
- Material Analysis: Analyzes material selection for a specific design, considering costs, competition, time limitations, company planning and other technical and economic factors
- Machine Knowledge: Understands machine operations as suited to produce the most economical / highest quality part
- Part Development: Specifies, designs, develops and tests parts and assemblies for company products or in-house fixtures with attention to electrical interface parameters
- Design Communication: Communicates and interfaces with vendors, customers and staff members to define parameters, clarify issues and determine the best solution to meet design goals
- Manufacturing Design: Understands manufacturing needs (Design for Manufacturability)
Job Role FAQs
What is a job role?
A job role refers to the duties, responsibilities, and expectations associated with a specific position within an organization. It explains what tasks an employee performs, how they contribute to team objectives, and how their work supports the company’s overall goals.
What are the typical responsibilities of a job role?
Typical job role responsibilities include completing daily tasks, collaborating with team members, making decisions, and meeting performance targets. For example, a software developer may write code, fix bugs, review pull requests, and collaborate with product teams.
What is the difference between a job role and a job title?
A job title is the official name of a position, such as Marketing Manager or Software Engineer. A job role describes the actual duties, responsibilities, and expectations associated with that position.
Why are clearly defined job roles important?
Clearly defined job roles help organizations improve productivity, reduce workplace confusion, and ensure accountability. When employees understand their responsibilities and expectations, teams can collaborate more effectively.
How do job roles support career development?
Understanding different job roles helps professionals identify career paths and the skills required for advancement. By learning the expectations of various roles, individuals can build relevant skills and plan long-term career growth.
Editorial Process
Lamwork content is developed through structured review of publicly available job postings and documented hiring trends.
Editorial operations are managed by Thanh Huyen, Managing Editor, with research direction and final oversight by Lam Nguyen, Founder & Editorial Lead. Content is periodically reviewed to reflect observable labor market changes.