Demo

Senior CAD / BIM Designer

LJB Inc.
Miamisburg, OH Full Time
POSTED ON 10/8/2026
AVAILABLE BEFORE 11/4/2026
Brief Description

LJB Inc. is currently seeking a qualified candidate to fill a full-time Senior CAD/BIM Designer role to support the design and delivery of complex tunnel and underground infrastructure projects. This position will provide advanced CAD and BIM expertise throughout the project lifecycle, working closely with engineers and project managers to develop accurate, constructible design documents and models. The ideal candidate will have 10 years of experience and will possess the professional and interpersonal skills to make a positive impact on our firm and the clients we serve. We are looking for a motivated professional with a forward-thinking mindset, strong problem-solving skills, and a collaborative spirit.

Compensation: $104,000 - $124,000 based upon experience, certifications, and regional market standards.

Benefit Information: Here

Senior Cad / Bim Designer Essential Functions

  • Develop and maintain detailed 2D and 3D CAD/BIM models, plans, profiles, sections, details, and construction documents for complex tunnel and underground infrastructure projects.
  • Produce and modify design drawings and models in accordance with project requirements, applicable standards, and company standards.
  • Support the design of tunnels, shafts, underground structures, stations, portals, utilities, temporary works, and associated civil infrastructure.
  • Work closely with engineers to translate engineering concepts and calculations into accurate, detailed design drawings and models.
  • Coordinate CAD and BIM information across multiple disciplines and identify potential conflicts, inconsistencies, and constructability issues.
  • Participate in BIM coordination and model reviews, including clash detection, model federation, and resolution of coordination issues.
  • Prepare drawing sets for design submissions, permitting, bidding, and construction, ensuring drawings are complete, accurate, and consistent.
  • Perform detailed quality control reviews of drawings and models and ensure compliance with established project and company standards.
  • Manage and maintain drawing files, models, reference files, sheet sets, and other project documentation in accordance with established document-control procedures.
  • Assist with development and implementation of project-specific CAD/BIM standards, templates, libraries, families, and workflows.
  • Work with project managers and discipline leads to establish efficient production workflows, identify technical challenges, and develop solutions.
  • Anticipate technical and coordination issues before they affect project delivery.
  • Help establish efficient and consistent CAD/BIM production practices.
  • Serve as a resource to engineers, designers, and less-experienced CAD/BIM staff.
  • Contribute to continuous improvement of the firm's digital design and documentation processes.
  • Maintain a high standard of accuracy and quality on technically complex projects.

Required Qualifications

SENIOR CAD / BIM DESIGNER ESSENTIAL CREDENTIALS:

  • Associate degree, technical degree, or relevant technical certification is preferred but may be substituted with equivalent experience.
  • 10 years of progressively responsible CAD/BIM experience, preferably supporting major civil infrastructure, transportation, structural, or tunnel projects.
  • Advanced proficiency in one or more of the following software programs:
    • AutoCAD
    • Revit
    • MicroStation
    • Civil 3D
  • Demonstrated ability to develop complex engineering drawings and/or 3D models with limited supervision.
  • Strong understanding of engineering drawing practices, drafting standards, plan production, and design documentation.
  • Experience working within a multidisciplinary engineering or design environment.
  • Strong understanding of CAD/BIM coordination, file management, and quality-control practices.
  • Ability to read and interpret engineering plans, specifications, sketches, and technical documents.
  • Ability to manage multiple priorities and meet project deadlines.
Core Skills

  • Strong attention to detail and ability to identify discrepancies and potential design conflicts.
  • Strong written, verbal, and interpersonal communication skills.

LJB Inc. is an equal opportunity employer and prohibits discrimination and harassment of any kind. We are committed to creating a diverse and inclusive workplace where all employees are valued, respected, and have the opportunity to succeed. Employment decisions are based on qualifications, merit, and business needs, without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, genetic information, marital status, or any other protected status under applicable law. If you are a self-starting individual who wishes to join an established team that believes in excellence in the workplace, this opportunity is for you.

Recruiters or staffing agencies: LJB does not accept unsolicited resumes from recruitment agencies. Any resume submitted without a signed agreement will be considered the property of LJB, and no fees will be paid. Please direct all communications to the HR team.

Key Words: CAD Designer, BIM Designer, Tunneling, Civil Engineering

Salary : $104,000 - $124,000

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