Carlos Guillén, P.E.
Founder & Principal Engineer
Professional Profile
Carlos Guillén is a seasoned civil engineer with over a decade of experience in land development, construction management, and client relations. He has built a reputation for guiding projects from initial design contracts all the way through to project close-out. Carlos’s collaborative approach and technical expertise ensure that each development aligns with his clients’ goals, budgets, and schedules.
Education
Bachelor of Science in Civil Engineering, University of Idaho, 2011
Professional Credentials
· Licensed Professional Engineer (P.E.) in Washington
· Licensed Professional Engineer (P.E.) in Idaho
· Certified Erosion & Sediment Control Lead (CESCL)
Professional Experience
Carlos has built a distinguished career in civil engineering, specializing in land development projects across the Pacific Northwest and Texas. He has developed and maintained strong client relationships by:
· Guiding clients through every project phase, from initial feasibility studies and design proposals to permitting and construction oversight
· Securing design contracts through clear communication of project goals, budgets, and schedules
· Collaborating with multidisciplinary teams of architects, surveyors, and contractors to ensure projects meet both regulatory requirements and client expectations
Carlos’s hands‐on experience on the job site and his commitment to proactive problem solving have been instrumental in delivering successful, cost-effective outcomes for a diverse portfolio of residential, commercial, and public works developments.
Keystone Engineers
In order to continue serving clients with a personalized, solutions-driven approach, Carlos founded Keystone Engineers.
Keystone Engineers leverages Carlos’s extensive background in construction and project management to anticipate developer needs—helping clients navigate complex regulatory environments, optimize infrastructure design, and achieve project milestones on time and within budget.
Approach & Vision
Carlos believes that successful land development is rooted in transparent collaboration and a thorough understanding of both technical requirements and market realities. His broad knowledge of engineering principles, combined with an entrepreneurial spirit, positions him to deliver tailored solutions that advance community growth and enhance the built environment.
Values and Community Involvement
Carlos is a firm believer in the transformative power of education. He actively mentors high school and college students, encouraging them to pursue STEM degrees and explore careers in engineering and technology.
Personal Life
Outside the office, Carlos’s greatest pride is his family, his wife and their two young children, who inspire him every day. When he isn’t designing site plans or mentoring future engineers, you can find him:
Carlos Guillén’s blend of technical expertise, client-centered philosophy, and genuine community spirit makes him a standout leader in today’s civil engineering landscape.
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