Senior Proposal Specialist

SUMMARY The Senior Proposal Specialist is an experienced contributor who leads complex proposal efforts with autonomy and elevates proposal quality through expertise, judgment, and disciplined execution. This role serves as a proposal subject matter expert—supporting high-stakes proposals, strengthening differentiated messaging and visual storytelling, and shaping how work gets done by improving tools, templates, and AI-enabled workflows that increase efficiency and proposal impact. RESPONSIBILITIES Lead complex or high-stakes proposal workstreams end-to-end, ensuring submissions are compliant, compelling, and differentiated. Serve as a proposal best-practices resource and informal mentor to Specialists and Associate Specialists; coach on customer-focused messaging, process, and quality standards. Partner with pursuit teams and leaders to translate strategy into clear win themes, value messaging, and proof points across proposal sections. Drive quality uplift by improving clarity, structure, and visual storytelling; partner with design resources to enhance proposal look/feel and highlight Mortenson differentiation. Leverage and help refine approved AI tools and analytics workflows to improve drafting efficiency, consistency, and QA/QC; identify repeatable improvements that reduce rework. Contribute to the continuous improvement of the Proposal Hub / Playbook and shared libraries by capturing best-of content, proposing template upgrades, and strengthening standards. All other duties as assigned. QUALIFICATIONS Bachelor’s degree in Marketing, Communications, Business, or related field (or equivalent experience). 6–8 years of progressively responsible proposal experience. AEC industry experience is strongly preferred. Advanced proposal writing, editing, and strategic messaging skills. Ability to lead complex work independently and solve ambiguous problems with sound judgment. Strong facilitation and stakeholder collaboration skills. Ability to coach peers and elevate standards through continuous improvement. Strong understanding of proposal tools, content systems, and governance; ability to improve usability and adoption. Ability to leverage approved AI tools and analytics to improve efficiency and quality. Proficiency with Microsoft 365 and proposal production workflows. A few benefits offered include: (for Non-Craft & Non-Union Craft working 25+ hours / week) Medical and prescription drug plans that includes no additional cost vision coverage Dental plan 401k retirement plan with a generous Mortenson match Paid time off, holidays, and other paid leaves Employer paid Life, AD&D, and disability insurance No-Cost mental health tool and concierge with extensive work-life resources Tuition reimbursement Adoption Assistance Gym Membership Discount Program The base pay range for this role is $79,000 - $118,600. (Actual range is higher for the following office locations: Denver, CO and Chicago, IL – 5%, Seattle, WA, and Portland, OR – 10%, Washington, D.C. – 12.5%). Base pay is positioned within the range based on several factors including an individual’s knowledge, skills, and experience, with consideration given to internal equity. This position is eligible for Mortenson’s incentive plan. #LI-PM1 #LI-hybrid Please make note: Visa sponsorship is not offered for this position. Our postings are typically open a minimum of 5 days and an average of 44 days. ABOUT MORTENSON As a top builder, developer, and EPC (Engineering, Procurement, and Construction), our expertise spans markets like sports, renewable energy, data centers, healthcare, and more. We are builders at heart, working to ensure the built environment has a lasting positive impact. Let’s Redefine Possible® Equal Employment Opportunity Your uniqueness brings new and creative perspectives to the team. Mortenson is committed to providing equal opportunities of employment (EOE) to all individuals, regardless of your race, religion, gender, national origin, age, veteran status, disability, marital status or any other legally protected category. Other Items to Note Mortenson reserves the right to hire any individual without legal or financial obligation on unwanted solicitations. No agency emails, calls, or solicitations are accepted without a valid agreement. Must be currently legally authorized to work in the U.S. without sponsorship for employment visa status (e.g., H1B status, 0-1, TN, CPT, OPT, etc.). We are unable to sponsor or take over sponsorship of an employment Visa at this time.