Technical Interior Designer - Construction

Onni Group of Companies; Seattle (WA); On-site; USD 120,000 - 140,000; Full time

Job summary

Onni is seeking a Technical Interior Designer in Seattle to produce construction-ready drawings, BIM models, and renderings for multifamily and office projects. You will design interiors from finishes to Class A spaces and manage coordinated construction documents.

You will model in Revit, draft in AutoCAD, export IFC files, and collaborate with architects, engineers, and contractors while ensuring code compliance and accessibility standards.

Qualifications

• Bachelor’s degree in interior design, architecture, or related field (or equivalent professional experience).
• 6+ years of professional interior design experience.
• NCIDQ certification or progress toward it (preferred).
• Proficiency in Revit, AutoCAD, and BIM workflows.
• Experience producing construction-ready drawings and IFC exports.
• Strong portfolio demonstrating design and technical drawing quality.
• Knowledge of building codes and ADA accessibility requirements.

Responsibilities

• Develop space plans, layouts, elevations, sections, and 3D models for interior design projects.
• Design modern apartment finishes and Class A amenity spaces for multifamily and office buildings.
• Produce full construction document sets: floor plans, RCPs, finish plans, millwork details, specs.
• Model and detail projects in Revit, maintaining accurate BIM models.
• Draft and edit drawings in AutoCAD as needed for workflows or client requirements.
• Produce high-quality renderings to communicate design intent to clients and stakeholders.
• Export and issue IFC files for construction and BIM coordination with consultants.
• Coordinate drawings with architectural, structural, MEP models to resolve clashes.
• Select finishes, FF&E, fixtures, and materials; develop lighting concepts and layouts.
• Prepare presentation materials, mood boards, and renderings for client review.
• Attend client meetings and site visits; ensure drawings comply with codes and accessibility standards.
• Manage drawing revisions and maintain version control through all project phases.

Skills

Revit

AutoCAD

IFC coordination

Rendering software

Education

Bachelor’s degree in interior design or related field

NCIDQ certification (preferred)

Tools

Enscape

Lumion

V-Ray

SketchUp

3ds Max

Job description

Job Description:

The Technical Interior Designer is responsible for producing drawings, not just directing others. This role is fluent in industry-standard design and BIM software, skilled in producing high-quality renderings, and comfortable issuing coordinated, construction-ready drawing sets, including IFC files issued for construction. The Technical Interior Designer is able to design modern, market-ready interiors from unit finishes to Class A amenity spaces for multifamily and office projects.

What You Will Do:

• Develop space plans, layouts, elevations, sections, and 3D models for interior design projects
• Design modern apartment unit finishes and Class A amenity spaces (lobbies, fitness centers, co-working lounges, rooftop decks, clubrooms, etc.) for multifamily and office buildings
• Produce full construction document sets: floor plans, RCPs, finish plans, millwork details, and specifications
• Model and detail projects in Revit, maintaining accurate, coordinated BIM models
• Draft and edit drawings in AutoCAD as needed for existing workflows or client requirements
• Produce high-quality renderings and visualizations using rendering software to communicate design intent to clients and stakeholders
• Export and issue IFC (Industry Foundation Classes) files for construction and for interdisciplinary coordination with architects, engineers, and contractors
• Coordinate drawings with architectural, structural, MEP, and other consultant models to resolve clashes
• Select and specify finishes, fixtures, furniture, and materials (FF&E)
• Develop lighting design concepts and layouts, including fixture selection, lighting plans, and coordination with electrical engineers
• Prepare presentation materials, mood boards, and renderings for client review
• Attend client meetings, site visits, and design reviews
• Ensure drawings comply with relevant building codes and accessibility standards
• Manage drawing revisions and maintain version control through all project phases

What You Bring:

• Proven proficiency in Revit (BIM modeling, families, sheet sets, documentation)
• Strong working knowledge of AutoCAD
• Experience producing and exporting IFC files issued for construction and BIM coordination workflows
• Proficiency with rendering software (e.g., Enscape, Lumion, V-Ray, or similar) to produce photorealistic renderings for client presentations
• Familiarity with at least one additional interior design/visualization tool (e.g., SketchUp, 3ds Max)
• Demonstrated experience designing modern apartment finishes and Class A amenity spaces for multifamily and/or office projects
• Understanding of construction documentation standards and detailing
• Working knowledge of building codes, ADA/accessibility requirements, and material/finish specifications
• Experience with lighting design, including layouts, fixture specification, and light plans
• Bachelor’s degree in interior design, architecture, or related field (or equivalent professional experience)
• 6+ years of professional interior design experience
• NCIDQ certification or progress toward it (preferred, adjust as needed)
• Strong portfolio demonstrating both design sensibility and technical drawing quality

Salary Range:

$120,000-$140,000

About The Company:

Onni

For over half a century, Onni has been building communities for people to live, work, and play. Our success reflects our commitment to our employees and partners, and our dedication to quality construction, innovation, sustainability, and customer satisfaction. Our expertise expands across North America, with offices in Vancouver, Toronto, Los Angeles, Seattle, Phoenix, and Chicago.

AI Use:

This role may involve the use of artificial intelligence (AI) tools to support research, analysis, content development, design, reporting, or operational efficiency. Employees are expected to use AI responsibly and in compliance with company policies, data privacy requirements, confidentiality obligations, and applicable laws.

All AI-generated or AI-assisted outputs must be reviewed for accuracy, quality, and appropriateness before use. Employees are also expected to disclose when AI tools have been used in the creation of work and must not present AI-generated content as solely their own original work.