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Mott MacDonald

Design and Construction Integration Manager

Salary:  $185,000 – $226,000 per annum
Location:  Seattle, WA, US
Location flexibility:  3 office days / week
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Job Description

Mott MacDonald is seeking a Design & Construction Integration Manager to connect the owner, final-design team, and construction delivery partners on a major program. In this senior owner-side role, you will convert design intent, contractor preconstruction input, commercial decisions, and third-party constraints into coordinated work packages that can be credibly priced, procured, staged, and built.

You will lead contract-packaging strategy, constructability and staging, design-readiness gates, and interface control from final design through early construction. You will make sure contractor advice is resolved and reflected in design decisions before unresolved access, temporary-works, utility, systems, and cross-package issues migrate into the field.

Your impact

  • Build the connection between design and construction. Lead integration across complex infrastructure work packages so design information is coordinated, constructible, ready for pricing, and aligned with delivery schedules.
  • Serve as the owner-side integration lead among the final designer, GCCM and other construction delivery partners, commercial management, project controls, systems integration, third parties, and field delivery teams.
  • Develop and maintain contract packaging strategies, including early works and major construction packages.
  • Lead structured constructability, access, staging, temporary-works, logistics, and means-and-methods reviews; convert contractor input into assigned design actions with documented disposition and closure.
  • Integrate GCCM preconstruction deliverables with design development, independent estimating, procurement, risk retirement, sequencing, and construction execution, including estimate and schedule reconciliation at commercial commitment points.
  • Establish and administer design-readiness and package-release milestones based on scope definition, quantities, interfaces, permits, access, retained risks, third-party commitments, and pricing assumptions, not design percentage alone.
  • Own interface control across civil, stations, track, rail systems, utilities, structures, and third-party work packages, including tie-ins to existing and adjacent infrastructure.
  • Identify and resolve scope gaps, overlaps, owner-retained responsibilities, access dependencies, acceptance criteria, and cross-package risks before they affect procurement, pricing, construction, testing, or commissioning.
  • Align design deliverables and interface-closure dates with the integrated master schedule, procurement milestones, early-work releases, and commercial decision points; escalate unresolved issues with clear cost, schedule, risk, and operational consequences.
  • Maintain the integration plan, interface register, design-readiness dashboard, assumptions and commitments log, decision log, action register, and records showing contractor recommendations that were accepted, rejected, deferred, or transferred.
  • Embed safety, quality, maintainability, operability, and construction-readiness requirements in design and preconstruction decisions, while promoting early bad news, timely resolution, and continuous improvement.

What you will bring

You are an owner-side infrastructure delivery leader who has worked across both design and construction and understands how design decisions affect pricing, commercial commitments, staging, temporary works, procurement, field execution, testing, and handover. You bring authority and structure to complex interfaces, challenge assumptions constructively, and keep designers and builders focused on producing coordinated, buildable, decision-ready information.

Required qualifications

  • Bachelor's degree in engineering, construction management, architecture, project management, or a related field.
  • Significant experience leading design-construction integration on a major transit, rail, or heavy-civil program from preconstruction through a target-price, GMP, or MACC commitment and into construction.
  • Experience coordinating multidisciplinary design, commercial, controls, construction, systems, utility, and third-party teams across multiple contract or work packages.
  • Strong knowledge of final design, constructability, preconstruction services, early-work packaging, procurement, cost and schedule development, temporary works, access planning, and construction sequencing.
  • Demonstrated experience defining and closing physical, functional, organizational, and temporal interfaces; resolving scope gaps and dependencies; and documenting the disposition of contractor input and owner decisions.
  • Strong communication, workshop facilitation, negotiation, conflict-resolution, and partner-coordination skills, with the judgment to escalate issues early and clearly.
  • Working knowledge of integrated master scheduling, independent estimating, risk and contingency management, change control, procurement, and collaborative-delivery commercial governance.

Preferred qualifications

  • Professional Engineer, Certified Construction Manager, Project Management Professional, or comparable professional credential.
  • Direct owner-side or contractor-side experience with Washington GCCM, GC/CM, CMAR, or progressive design-build, including preconstruction services, estimate reconciliation, and MACC or GMP development.
  • Experience supporting major transportation, transit, rail, or complex civil infrastructure programs.
  • Advanced knowledge of construction staging, temporary works, systems and civil interface control, configuration and design change management, package-release readiness, and testing

Bring your expertise, curiosity, and drive to make a difference. If you are ready to join a collaborative consultancy where your perspective is valued, your growth is supported, and you are empowered to lead with integrity, we would love to hear from you.

Benefits & Rewards

The expected salary for this position is $185,000 - $226,000.

Individual pay is determined based on several factors such as work location, education, experience, and unique skills.

In addition to base salary, Mott MacDonald offers performance-based bonuses and a comprehensive benefits package, giving employees a direct connection to our success.

Our comprehensive benefits package is designed to support the health, wellbeing, financial security, and professional growth of our employees. Eligible employees have access to medical, dental, and vision coverage, FSA and HSA accounts, company-paid life insurance, short-term and long-term disability coverage, and a competitive 401(k) plan with company matching. We also provide paid time off, paid holidays, caregiver leave, employee referral bonuses, professional registration and membership reimbursements, and tuition assistance to support continued learning and career development.

Collaboration at Our Core

At Mott MacDonald, we believe great ideas happen when we're together. Our hybrid approach centers on an in-office culture, with most of your time spent collaborating face-to-face and a minimum of three days per week in the office. We balance flexibility with connection, so you and your manager can choose how to meet clients, team, and personal commitments.

Equal opportunity is the law.

We seek to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they have the opportunity to contribute.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, creed, marital status, sexual orientation, gender identity, citizenship status or disability status.

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Mott MacDonald

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Seattle, US

Working at Mott MacDonald

3 office days / week

A little flex time – We’re happy to talk flexible working and how we can support your responsibilities beyond the workplace. We offer a range of options depending on your role, so please discuss this with your recruiter.

Company benefits

Accrued annual leave
Adoption leave – 26 weeks full pay
Annual bonus
Annual pay rises
Bank holiday swaps
Bike parking
Book swaps
Buddy scheme
Buy or sell annual leave
Carer’s leave – up to 5 days, two of which are paid
Collaboration spaces
Compassionate leave
Critical Illness Insurance
Cycle to work scheme
Dental coverage
Employee assistance programme
Employee discounts
Enhanced maternity leave – 26 weeks full pay
Enhanced paternity leave – 2 weeks
Enhanced pension match/contribution – matched up to 7%
Enhanced sick pay
Ergonomic workstations
Eye Care Support – Eyecare vouchers
Faith rooms
Fully stocked snack cupboard
Further education support
Health assessment
In house training
Income protection
L&D budget
Learning platform
Life assurance
Life insurance – 4 x salary
Lunch and learns
Meditation space
Meditation space
Menopause support
Mentoring
Modern office
On-site shower
On-site yoga classes
Open to part time work for some roles
Open to part-time employees
Pregnancy loss leave
Pregnancy support
Private booths
Private GP service – Private Medical care for all UK staff
Professional subscriptions – We pay for your primary professional annual subscription
Referral bonus
Religious celebration leave
Reservist leave – 10 days leave
Returnship
Salary sacrifice
Share options
Shared parental leave – We match up to 24 weeks full pay
Study support
Tax-free childcare
Teambuilding days
Theme park discounts
Travel loan
Women’s health leave
Women’s health support
Mental health first aiders
Mental health support
Emergency leave

Awards & Accreditations

Best Employee Wellbeing

Top 5 - Best Employee Wellbeing

Flexa awards 2026
Best Career Progression

Top 10 - Best Career Progression

Flexa awards 2026
2nd - Best Career Progression

2nd - Best Career Progression

Flexa awards 2025
3rd - Most Family Friendly Company

3rd - Most Family Friendly Company

Flexa awards 2025
Best Work-Life Balance

Top 5 - Best Work-Life Balance

Flexa awards 2025
Most Flexible Company

Top 5 - Most Flexible Company

Flexa awards 2025
Best Workplace Culture

Best Workplace Culture

Flexa awards 2025
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Company employees:

18,000 worldwide

Gender diversity (m:f:n-b):

0:35:65

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