Leadership built
on experience.
Mike Ratajczak and Ryan Ainsworth founded Ramcon Builders to bring senior-level construction expertise, direct accountability, and hands-on leadership to commercial projects.
Ramcon Builders grew from a shared conviction that the quality of a construction project depends on the judgment and accountability of the people leading it. Longtime friends and industry colleagues, Mike Ratajczak and Ryan Ainsworth built their careers managing commercial construction work and navigating complex project requirements.
Today, they bring that experience together in an owner-led company where clients have direct access to seasoned professionals, decisions receive the attention they deserve, and every project carries the founders' personal commitment.
Mike Ratajczak
Mike Ratajczak brings more than 20 years of commercial construction experience and a proven ability to navigate challenges without losing sight of the project schedule. He has built his career turning unforeseen conditions into opportunities for effective planning, coordination, and timely delivery.
Mike worked alongside business partner Ryan Ainsworth for nearly two decades at a large Sacramento commercial contractor. Together, they developed their expertise in estimating, negotiating, and managing complex construction projects. As Ryan moved into broader operations leadership, Mike led the Special Projects Division for seven years, overseeing multiple clients and projects ranging from $500,000 to $30 million.
His portfolio spans tenant improvements, data centers, hospital renovations, complex waterproofing, parking structures, wineries, manufacturing facilities, and ground-up construction. His past clients include Hewlett Packard, Oracle, Kaiser, Sutter, Agilent, Keysight, Bogle, Orrick, California Earthquake Authority, Hines, CalPERS, CalSTRS, Verizon, SureWest, Truckee High School, Sierra College, UC Davis, and UC Davis Health, among others.
At the center of Mike's approach are lasting relationships with clients and trade partners. Open communication and mutual trust help teams identify issues early, make practical decisions, and protect schedules. Those relationships, and years of conversations with Ryan about creating a different kind of construction company, led to the founding of Ramcon Builders in 2026.
Ramcon was established to deliver the same high-caliber work with faster contract execution, quicker decisions on fast-moving projects, and a nimble network of trade partners that can create competitive advantages for clients.
Selected Experience
UC Davis Health | C Street Clinic Infusion & Psychiatric TI
Client: UC Davis Health
Location: Sacramento, California
Project scope: 15,525 sf interior renovation and 5,000 sf exterior improvements to a historic cannery building on an occupied campus, including infusion therapy, clean-room pharmacy, interventional psychiatry, new MEP systems, generator, structural supports, and electrical service.
Project value: $21 million
Orrick Sacramento TI | 400 Capital Mall
Client: Orrick, Herrington and Sutcliffe
Location: 400 Capital Mall, Sacramento, California
Project scope: 30,000 sf tenant improvement across floors 28, 29, and 30 in an occupied high-rise. Work included complete demolition, all-new finishes, new mechanical, electrical, and plumbing (MEP) systems and lighting throughout, new audiovisual (AV) systems, and new security systems.
Project value: $6.5 million
UC Davis | UC Center
Client: UC Davis
Project scope: 24,000 sf design-build renovation of a 100-year-old building for UC Davis's Student and Policy Center. Work included complete demolition down to the shell, roof removal to add a third story, structural upgrades to meet seismic codes, new stairs and an elevator, new mechanical, electrical, and plumbing (MEP) systems throughout, new electrical switchgear, new lighting, and all-new finishes. Construction took place on a zero-lot-line site while maintaining pedestrian and alley access.
Project value: $20.7 million
Ryan Ainsworth
Ryan Ainsworth brings 20 years of commercial construction experience to Ramcon Builders, spanning preconstruction, project management, and executive leadership on complex projects throughout Northern California.
Ryan spent nearly two decades working alongside Mike Ratajczak at a large Sacramento commercial contractor. His project experience includes major healthcare facilities, ground-up development, specialized tenant improvements, and renovations that demand close coordination among owners, design teams, trade partners, and operating facilities.
His selected work includes the $140 million UC Davis Health Medical Office Building at Folsom, the $102 million Sutter Health Orthopedic Center of Excellence project, and the award-winning UC Davis Health Patient Contact Center. Across these projects, Ryan has navigated complex construction requirements, collaborative delivery methods, and coordination among multiple stakeholder groups.
Ryan holds a Bachelor of Science in Construction Management from CSU Chico and the LEED AP BD+C and Associate DBIA credentials. As a Ramcon co-founder, he brings major-project expertise to an organization built for faster decisions, close coordination, and responsive execution.
Selected Experience
UC Davis Health | Folsom Medical Office Building
Client: UC Davis Health
Location: Folsom, California
Project scope: Approximately 114,000 sf, three-story ground-up healthcare facility with specialty care, imaging, pharmacy, laboratories, infusion services, and public amenities. Achieved LEED Silver and SITES Gold.
Project value: $140 million
Sutter Health | Orthopedic Center of Excellence
Client: Sutter Health
Location: Sacramento, California
Project scope: Conversion of an existing four-story office building into a specialized orthopedic and ambulatory surgical facility, including operating rooms, imaging, medical offices, significant seismic improvements, and new building systems.
Project value: $102 million
UC Davis Health | Patient Contact Center
Client: UC Davis Health
Location: Sacramento region, California
Project scope: 70,000 sf design-build renovation, taking an existing building back to core and shell for a complete tenant improvement. Achieved LEED Gold CI and received regional construction awards.
Project value: $18 million