Senior Mechanical Designer (3D CAD & Equipment Layout)

Rose International; Chesterfield (MO); On-site; USD 117,000 - 134,000; Full time

Job summary

Rose International is seeking a Senior Mechanical Designer specializing in 3D CAD and equipment layout for capital projects. The role is onsite in Chesterfield, MO, with a temporary, full-time commitment and a 13-month estimated duration.

Candidates should have 10+ years in mechanical design, strong 3D CAD capabilities, and knowledge of equipment layouts and fabrication processes. The position requires a Bachelor’s degree or higher in engineering or a related field, with preference for

Qualifications

• 10+ years of progressively responsible mechanical design experience.
• Proficiency with 2D CAD and 3D model-based design systems for equipment layout and detailing.
• Working knowledge of mechanical design principles, tolerances, materials, fabrication and related codes.

Responsibilities

• Lead the mechanical design discipline on large, complex projects.
• Develop mechanical design packages including 3D models, GA drawings, and vendor data integration.
• Provide technical oversight of vendors, consultants, and contractors within the mechanical scope.
• Mentor less-experienced designers and promote consistent CAD/3D practices.

Skills

CAD

Engineering

Mechanical Engineer

Education

Associate degree in Design or related field

Bachelor's in Engineering or equivalent

Job description

Date Posted: 09/16/2026

Hiring Organization: Rose International

Position Number: 507663

Industry: Biotech/Healthcare

Job Title: Senior Mechanical Designer (3D CAD & Equipment Layout)

Job Location: Chesterfield, MO, USA, 63006

Work Model: Onsite

Employment Type: Temporary

FT/PT: Full-Time

Estimated Duration (In months): 13

Min Hourly Rate($): 85.00

Max Hourly Rate($): 97.00

Must Have Skills/Attributes: CAD, Engineering, Mechanical Engineer

Experience Desired: Mechanical design experience (10 yrs); Demonstrated proficiency with 2D CAD and 3D model-based design system (10 yrs); Knowledge of mechanical design principles, equipment arrangement, tolerances, materials, fabrication (10 yrs)

Required Minimum Education: Bachelor’s Degree

**C2C is not available**

Job Description

Required Education

• Associate degree in Design, Drafting Technology, Mechanical Engineering Technology, or a related field

Preferred Education

• Bachelor's in Engineering or an equivalent combination of education and relevant experience may also be considered.

Qualifications & Competencies

• 10+ years of progressively responsible mechanical design experience.
• Demonstrated proficiency with 2D CAD and 3D model-based design systems used for mechanical equipment layout and detailing.
• Working knowledge of mechanical design principles, equipment arrangement, tolerances, materials, fabrication practices, installation methods, and applicable codes and standards.
• Ability to interpret process and engineering documents, vendor drawings, specifications, equipment data, calculations, and field information and translate them into coordinated design deliverables.
• Demonstrated ability to lead design reviews, prioritize concurrent assignments, resolve technical issues, and communicate effectively with technical and nontechnical

Purpose

• Leads the development of safe, efficient, and constructible mechanical designs for capital projects, supporting multiple sites and projects concurrently on a regional basis and, as needed, across global businesses.
• Leads mechanical project design, discipline work processes, design standards maintenance, and CAD/3D design tool development.

Key Tasks

• Participates as a project team member and serves as the mechanical design discipline lead for large, complex projects.
• Leads mechanical design activities and closeout documentation in accordance with the engineering execution process and applicable document-control requirements.
• Leads development of mechanical design packages, including virtual 3D models, equipment arrangements, general arrangement drawings, fabrication or installation details, equipment supports, access platforms, and vendor-data integration.
• Provides expert guidance to project teams and engineers in 3D modeling, equipment layout, mechanical detailing, maintainability, and construction coordination.
• Develops mechanical designs that satisfy project, process, safety, operability, maintenance-access, reliability, and constructability requirements.
• Models and details mechanical equipment and associated components, including equipment connections, supports, guards, access provisions, lifting or removal clearances, and interfaces with piping, structural, electrical, and instrumentation systems.
• Leads and provides technical oversight of equipment vendors, engineering consultants, design contractors, and fabrication or installation contractors within the mechanical design scope.
• Supports field verification, constructability reviews, installation, commissioning, checkout, and resolution of design-related field issues within the designer’s responsibilities.
• Leads development, implementation, and maintenance of mechanical design standards, specifications, standard details, libraries, templates, and CAD/3D design tools.
• Presents and communicates project scope, design decisions, risks, status, and technical issues to peers, project managers, group leadership, engineering leadership, business stakeholders, and site representatives to maintain project alignment.
• Coordinates mechanical design interfaces across disciplines and performs design reviews, model reviews, and interference or clash-resolution activities.
• Verifies existing field conditions and incorporates documented site information, applicable codes, company standards, vendor requirements, and project specifications into the design.
• Checks or approves mechanical drawings and models for technical accuracy, completeness, consistency, and readiness for issue, in accordance with assigned authority and project quality requirements.
• Mentors less‑experienced designers and promotes consistent design practices, quality expectations, and effective use of CAD/3D tools.

Key Working Relationships

• Reports directly to the discipline Engineering Cluster Lead.
• Works closely with mechanical and other discipline engineers, designers, project managers, procurement, construction, commissioning, maintenance, operations, and safety representatives.
• Interfaces with senior external contacts, including equipment vendors, fabricators, design consultants, EPCM firms, and construction contractors.
• Interfaces with site operations, maintenance, reliability, safety, and business leaders to confirm requirements and support project execution.
• Only those lawfully authorized to work in the designated country associated with the position will be considered.
• Please note that all Position start dates and duration are estimates and may be reduced or lengthened based upon a client’s business needs and requirements.

Benefits

For information and details on employment benefits offered with this position, please visit here. Should you have any questions/concerns, please contact our HR Department via our secure website.

California Pay Equity

For information and details on pay equity laws in California, please visit the State of California Department of Industrial Relations' website here.

Rose International is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender (expression or identity), national origin, arrest and conviction records, disability, veteran status or any other characteristic protected by law. Positions located in San Francisco and Los Angeles, California will be administered in accordance with their respective Fair Chance Ordinances.

If you need assistance in completing this application, or during any phase of the application, interview, hiring, or employment process, whether due to a disability or otherwise, please contact our HR Department.

Rose International has an official agreement (ID #132522), effective June 30, 2008, with the U.S. Department of Homeland Security, U.S. Citizenship and Immigration Services, Employment Verification Program (E-Verify). (Posting required by OCGA 13/10-91.).