About

Brian Weinmaster’s story is Alliance Construction’s story. Beginning his career with Alliance in 1994 as a Yard Laborer while working his way through college, Brian didn’t just climb the ladder, he built it from the ground up.

Over the course of three decades, Brian has held nearly every critical role in the company: Project Engineer, Superintendent, Project Manager, VP/Chief Estimator, and Executive Vice President before assuming his current role as President & CEO. That hands-on journey through the field, the office, and the boardroom gives Brian a perspective that few leaders in the industry can claim. He understands Alliance’s work not just strategically, but viscerally.

Today, Brian leads Alliance Construction with the same grit and precision that defined his earliest days on the job site. His deep operational knowledge, combined with a commitment to building lasting relationships and delivering exceptional results, has shaped Alliance into the trusted general contractor it is today.

Under Brian’s leadership, Alliance continues to grow, not just in volume, but in the quality of its people, its projects, and its reputation across the communities it serves.

David Gallo brings a financial perspective that is as broad as it is deep. With over 20 years of experience spanning public accounting, corporate finance, and large-scale real estate development, David operates at the intersection of strategic vision and operational precision, exactly where a growing construction company needs its CFO.

David’s expertise in municipal bond financing, investor relations, and complex debt structuring gives Alliance a sophisticated financial capability that extends well beyond traditional construction finance. He has led multimillion-dollar capital raises, negotiated with institutional partners, and built cross-functional teams capable of executing at the highest levels of complexity. His background in master-planned community finance brings a long-horizon, big-picture perspective that strengthens Alliance’s approach to project planning and financial strategy.

At Alliance, David is the financial architect behind the company’s continued growth. His combination of strategic leadership, deep financial acumen, and hands-on operational execution ensures that Alliance is not just building great projects, but building a great company.

Casey Paulson brings over 24 years of estimating experience to every project he touches, with a track record that spans projects of all sizes, scopes, and complexities. That depth of experience means clients benefit from more than just numbers on a page — they get insight, strategy, and a relentless focus on maximizing value from the very start.

As VP and Chief Estimator, Casey leads Alliance’s preconstruction and estimating team through every phase of early project development, including preconstruction services, feasibility analysis, design development, value engineering, and life cycle costing. His constructability analysis ensures that potential challenges are identified and addressed early, and his value engineering approach is built around one goal: delivering the best possible program for every client.

Casey’s responsibilities also extend to advancing Alliance’s computer technology and systems, ensuring the estimating team operates with the tools and processes that keep Alliance at the leading edge of preconstruction excellence.

From first pencil to final budget, Casey and his team are the foundation on which successful Alliance projects are built.

Doug York brings three decades of field expertise and an owner’s commitment to every project Alliance Construction undertakes. Having joined Alliance in 1994, Doug’s investment in Alliance’s success runs deep.

As General Superintendent, Doug oversees the overall direction of project and subcontractor personnel, with a sharp focus on field operations and coordination. He plays a central role in maintaining Alliance’s quality control program while providing hands-on guidance and support to field superintendents and foremen across all active projects.

Doug works closely with project superintendents to coordinate field personnel and manage the flow of work among subcontractors, suppliers, and tradespeople on site. His leadership ensures that schedules are not just maintained, but driven with purpose, overseeing all project schedule functions on a week-to-week basis to keep every job on track and on target.

With 40-plus years of experience and a stake in the company he helps lead, Doug brings both the knowledge and the accountability that define Alliance’s standard of excellence in the field.

Robin’s path at Alliance Construction is a testament to what drive and curiosity can build. Starting in a temporary front desk position, Robin quickly demonstrated the kind of initiative that moves careers forward, transitioning through operations and marketing before finding her footing in business development. That full-circle journey through the company has given Robin a perspective that is rare in the industry and invaluable to Alliance’s growth.

As Director of Business Development, Robin leads Alliance’s pursuit strategy, client relationships, and market positioning with the confidence of someone who knows the business from the inside out. With over 20 years at Alliance and an ownership stake in the company, her commitment to Alliance’s success is both professional and personal.

Robin is deeply embedded in the industries and communities that shape Colorado’s built environment. She served as President of CREW Denver in 2025 and assumed the presidency of CO WAHN in 2026, reflecting her standing as a respected leader among Colorado’s commercial real estate and construction professionals. She also serves on the Executive Committee for Colorado BUILT and is an active member of both ULI and CREW NoCo, continuously engaging at the forefront of industry conversation and connection.

At Alliance, Robin is the face of relationships, the driver of opportunity, and a key voice in shaping where the company goes next. 

Sherri Keefer is the kind of professional every project depends on and every team is grateful to have. With over 28 years of experience in the construction industry, Sherri brings a level of precision, reliability, and expertise to contract management that keeps Alliance’s projects moving forward without missing a beat. Contracts are issued on time, reviewed ahead of schedule, and executed with exacting attention to detail.

As Contract Manager, Sherri oversees the entire contract lifecycle from preparation and negotiation through administration and closeout, ensuring full compliance with company policies and legal requirements. She directs and develops contract administration policies, guides contract terms, enforces deadline compliance, and maintains the organized records that keep complex projects running smoothly. Her coordination with project managers and contractors ensures that every document is accurate, complete, and compliant.

Sherri’s role extends well beyond administration. She contributes to strategic decisions, resolves escalated operational issues, and provides technical guidance on contract management across the organization. Her work documenting policy for contractual parameters has strengthened Alliance’s operational foundation and positioned the company to scale with confidence.

When the details matter most, and in construction they always do, Sherri Keefer is the person Alliance counts on.

Twenty-one years in construction teaches you that the difference between a good project and a great one comes down to the people driving it. Nate Krier is one of those people.

Nate’s value to Alliance and its clients is rooted in continuity. He is present and accountable from the earliest preconstruction conversations through final building commissioning, ensuring that every decision made at the front end is honored at the back end. That through-line of ownership is what makes projects run the way they should.

As the project moves into construction, Nate takes the helm on day-to-day administration, holding full responsibility for on-time and on-budget delivery. He personally negotiates and administers all subcontracts, purchase orders, and buyout functions, keeping costs controlled and teams aligned.

Beyond his project management role, Nate also serves as Alliance’s Equipment Manager, adding another layer of operational oversight that keeps resources and equipment moving efficiently across the company’s active project portfolio.

Detail-oriented, deadline-driven, and fully invested from start to finish, Nate Krier delivers.

Dan Miller brings a combination of credentials and experience that is genuinely rare in the industry. With over 28 years in project management and a master plumber’s license anchoring his technical foundation, Dan approaches every project with both the strategic vision of a seasoned executive and the hands-on expertise of a skilled tradesman.

As Project Executive, Dan leads at every level. He guides his own project team while serving as a senior leader across Alliance’s entire project manager team, setting the standard for performance, accountability, and excellence. His dual role in preconstruction and construction means Dan is with a project from first estimate to final commissioning, ensuring that nothing is lost in translation as a project moves from planning to execution.

During preconstruction, Dan collaborates closely with architectural and ownership teams to assist with permitting, establish milestone estimates, and build comprehensive project schedules. He leads the transition from preconstruction to construction with precision, ensuring that objectives, scope, and budget remain fully aligned at every handoff. Once in construction, Dan holds overall responsibility for on-time, on-budget delivery, directing day-to-day project administration and providing hands-on guidance to project managers through subcontract negotiation, purchase orders, and buyout functions.

From the first blueprint to the final commissioning, Dan Miller is the steady hand that carries a project all the way home.

Todd’s career is built on a foundation that few can match. Beginning as a subcontractor in structural framing, he developed a ground-level mastery of field operations that has shaped everything he does today. When the opportunity came to join Alliance Construction, Todd made a bold mid-career leap driven by a desire to keep growing, and he never looked back.

At Alliance, Todd is the bridge between time-tested field knowledge and the evolving demands of a new generation of construction professionals. He is focused on building, refining, and maintaining the processes that keep field personnel operating at the highest level, ensuring training, coordination, and crossover are never left to chance.

With over 30 years of experience and an ownership stake in Alliance, Todd brings both the authority of deep expertise and the accountability of someone personally invested in the company’s success. His ability to connect where the industry has been with where it is going makes him an invaluable leader for project superintendents and foremen alike.

Todd’s commitment to the next generation extends beyond Alliance’s job sites. He volunteers his time with the AGC of Colorado, teaching through their Superintendent program and ensuring that the standards and skills that define great field leadership are passed on to those coming up in the trade.

Ryan Mirus brings over 24 years of construction industry experience to Alliance’s preconstruction team, and what sets him apart starts at the beginning of his career. Ryan launched his professional journey as a Superintendent, giving him a field-level perspective on estimating that most preconstruction professionals simply don’t have. He doesn’t just know what a project costs — he knows what it takes to build one.

As Preconstruction Manager, Ryan works closely with the estimating team to develop accurate, competitive project estimates, coordinate pricing strategies, and secure project backlog. He leads preconstruction efforts by collaborating with owners, design teams, and operations staff to ensure budgets are realistic, constructability is thoroughly analyzed, and every solution is built around delivering value.

Ryan’s greatest strength may be the bridge he builds between preconstruction and construction. By ensuring that project objectives, scope, and cost are fully aligned from the outset, Ryan makes the transition from planning to building seamless — protecting the client’s investment and setting every project up for success in the field.

When Ryan is involved from the start, the entire project benefits.

Some project managers manage projects. Ryan Hubert builds partnerships and that distinction makes all the difference.

With over 15 years of experience, Ryan has built his reputation on something that can’t be found in a schedule or a budget line: the ability to bring owners, architects, and construction teams together in a shared mission. His clients don’t just get a project manager, they get a collaborator who is genuinely invested in their success.

That partnership mindset shapes everything Ryan does. During preconstruction, he works hand-in-hand with architectural and ownership teams to assist with permitting, establish milestone estimates, and build project schedules that reflect a true understanding of each client’s goals and priorities. When the project transitions to construction, Ryan ensures that the trust and alignment built during preconstruction carries through to delivery, with no gaps, no surprises, and no dropped handoffs.

From there, Ryan leads his team through day-to-day project administration with full accountability for on-time and on-budget completion. He personally negotiates and administers all subcontracts, purchase orders, and buyout functions, ensuring that every partner in the project — from ownership to subcontractor — is set up to succeed.

For Ryan, a completed project isn’t just a building. It’s proof of what great partnerships can build.

On Dan Farrar’s jobsite, safety isn’t a checklist — it’s a culture. With over 28 years of construction experience, Dan brings a commanding presence to every project he leads, built on a foundational belief that a safe, clean, and efficient jobsite is the starting point for everything else that follows.

As Superintendent, Dan directs the full scope of field operations, overseeing project and subcontractor personnel, coordinating the flow of work, and ensuring that every tradesperson, supplier, and subcontractor on site is aligned and moving with purpose. He works closely with the project manager to keep field personnel coordinated and drives the day-to-day schedule with the discipline and focus that keeps projects on track and on time.

Dan’s commitment to safety runs deep. He supervises on-site safety personnel in the development, implementation, and enforcement of site-specific programs, conducts regular OSHA compliance inspections, and personally trains and orients all personnel in hazard recognition and pre-planned abatement strategies. Safety on Dan’s project is not reactive; it is built in from day one.

Rounding out his role, Dan supports Alliance’s quality control program and provides guidance and mentorship to field superintendents and foremen, sharing the kind of hard-earned knowledge that only comes from nearly three decades on the job.

When Dan Farrar is running the field, the work gets done right, on time, and everyone goes home safe.