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Senior Specifications Writer


We are seeking an experienced Senior Specifications Writer to join our team.  As a member of the Technical and Quality Assurance team, you will interact with multiple teams and serve as the senior strategic and technical resource for our projects.  In this role, you will have the opportunity to provide a full range of services associated with construction specifications including outline specifications, bridging documents, office master specifications and design guidelines. You will also serve as a mentor and leader for innovative and sustainable strategies.  This position can be remote or hybrid, with a preference for California or Washington based candidates. Hybrid roles are onsite in our Seattle, San Francisco, or Los Angeles office three days per week. 

About Mithun

At Mithun, our design has purpose—to create positive change in people’s lives. We are an internationally recognized leader in sustainability, combining exemplary design with a focus on building and site performance, human health and social equity. Since the inception of the practice in 1949, our work has been recognized with hundreds of peer and industry awards including the 2023 AIA Architecture Firm Award, ULI Global Awards for Excellence and seven AIA Committee on the Environment Top Ten Awards. 

We embrace justice, equity, diversity and inclusion (JEDI) as key expressions of our mission of Design for Positive Change. We are committed to promoting JEDI both internally and externally in our firm culture, project work and partnerships. A JUST organization since 2017, Mithun’s goal is not just good intentions but real impact for the people, communities and clients we serve. 

Role & Responsibilities

  • Develop specifications in close consultation with project teams in Seattle, San Francisco, and LA, including formatting and file assembly. 
  • Function as a technical resource to the entire firm on materials including research and recommendations for sustainable materials and systems being considered for inclusion into the specifications. 
  • Provide aid in resolving problems relating to use and installation of building materials and products arising during design and construction process. 
  • Attend coordination meetings with clients as needed. 
  • Using CSI Masterformat, continually maintain specification templates up to date as needed including codes standards, reference standards and product identification. 
  • Assist with development of best practices for quality assurance and quality control on issues such as consistent terminology and coordination of drawings and specifications. 
  • Coordinate with the Sustainability Committee Materials team on specifications alignment with achieving firm sustainability goals around low embodied carbon, low emitting materials, and other sustainability criteria.  
  • Strong leadership skills and ability to educate our design team related to selection and specifications of building materials. 


  • Professional Architecture degree. 
  • At least 10 years of experience in architecture, including at least five years of writing specifications. 
  • Experience with CSI Masterformat and Uniformat.

Preferred Qualifications

  • CSI CCS Certification preferred. 
  • CSI membership preferred. 
  • LEED® accreditation preferred. 

Mithun offers medical, dental, vision, life and disability insurance, paid parental leave, transit benefits and a 401(k) retirement plan. Flexible Spending Accounts or Health Savings Accounts are available based on eligibility requirements. Paid time off includes eight holidays and vacation accrual of up two weeks per year. The expected range of compensation for this role is $105,000 to $125,000 per year. Pay ranges differ by location. 

Mithun is an Equal Opportunity Employer. 

This position is remote or onsite/hybrid.

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