Business Details
50+ Years
experience
Trusted Engineering Solutions in Pittsburgh
Since 1910, Lli Engineering has been recognized for delivering top-quality engineering and architectural design services. With a portfolio of more than 10,000 major projects totaling over $3.5 billion in construction value, our firm's longevity speaks to our commitment to excellence. Guided by core values including clear communication, meticulous contract oversight, and cost-effective construction strategies, we specialize in commercial developments, critical facilities, infrastructure upgrades, sustainable building design, energy efficiency improvements, and project engineering. Headquartered in Pittsburgh, Pennsylvania, we have successfully completed projects in over 20 states. Our multidisciplinary expertise spans electrical, mechanical, piping, and structural engineering, supported by a team of recognized industry leaders.With a focus on innovation and collaboration, we transform client visions into reality while maintaining a consistent record of client satisfaction. Our leadership team, including CEO Jamie White and Vice President Todd Sherwin, ensures operational excellence and client-centric solutions. From data centers to wastewater treatment facilities, our work addresses complex challenges across diverse sectors. As a veteran-owned small business with a national presence, we combine over a century of experience with forward-thinking design to deliver reliable, code-compliant solutions tailored to each project's unique demands.
Services
HVAC Engineering
Electrical Engineering
Plumbing Systems
Structural Engineering
Architectural Design
Project Management
Design-Build Services
Details
- Year established: 1910
Highlights and features
- Over 100 years of engineering expertise since 1910
- Nationwide project experience across 20+ states
- Multidisciplinary services covering all engineering aspects
- Client-focused approach with proven project outcomes
- Recognized leadership in critical facility design
Services
HVAC Engineering
Lli Engineering designs HVAC systems for mission-critical environments including data centers, healthcare facilities, and laboratories. Our solutions prioritize energy efficiency, sustainability, and optimized lifecycle costs while ensuring code compliance and indoor air quality. With expertise in clean room and redundant system design, we deliver tailored mechanical solutions for demanding applications.
Electrical Engineering
We provide comprehensive electrical engineering services for power distribution systems in data centers, telecom facilities, and industrial environments. Our capabilities include emergency power systems, UPS design, arc flash analysis, and NEC code compliance. Specializing in Tier I-IV data center configurations, we ensure reliable, redundant power solutions for critical operations.
Structural Engineering
Our structural engineering services cover foundation design, steel/concrete/timber framing, and architectural support systems. We deliver code-compliant solutions for projects ranging from simple pole buildings to complex high-rises. Through structural investigations and retrofit designs, we ensure long-term safety and performance for diverse construction types.
Project Management
Lli Engineering offers end-to-end project management from concept to completion. We coordinate multidisciplinary teams, manage budgets and schedules, and ensure quality control throughout construction. Our services include contractor selection, compliance reviews, and closeout documentation to deliver projects on time and within budget.
Design-Build Services
We provide seamless design-build services for wastewater treatment facilities and telecom infrastructure. Collaborating with construction partners, we ensure regulatory compliance and cost efficiency through integrated project execution. Our telecom solutions serve major clients across the East Coast with durable, high-performance infrastructure.
People
Jamie White
CEO/President
Jamie White oversees all operations, finances, and client relations at Lli Engineering. With extensive industry experience, he ensures quality assurance and client satisfaction while driving new business development and strategic growth initiatives.
Todd Sherwin
Vice President
Todd Sherwin manages production operations and client scheduling at Lli Engineering. As a 25-year veteran of the firm, he coordinates manpower resources and ensures efficient project execution across multiple disciplines.
Sunny
Chief Happiness Officer
Sunny fosters a positive work environment at Lli Engineering through companionship and joy. This role promotes employee well-being and maintains a welcoming atmosphere that supports team collaboration and workplace satisfaction.
Questions
What engineering services does LLI Engineering offer?
LLI Engineering provides HVAC, electrical, plumbing, structural, and architectural engineering services, along with project management and design-build solutions for critical facilities.
Which geographic areas do you serve?
We operate nationwide with extensive experience in Pennsylvania, the Mid-Atlantic region, and across the East Coast for telecom projects.
How does LLI Engineering handle complex projects?
Our team combines multidisciplinary expertise with proven project management to coordinate schedules, budgets, and regulatory compliance for complex infrastructure projects.
Are emergency engineering services available?
While we don't offer 24/7 emergency services, we provide scheduled support for critical system maintenance and upgrades during regular business hours.
What industries do you specialize in?
We specialize in data centers, telecommunications infrastructure, wastewater treatment facilities, and commercial developments with mission-critical requirements.
