Gradient Group, LLC
Leslie Mardis, P.E. is a highly experienced civil engineering professional currently serving as the Site Development Manager at Gradient Group, LLC since September 2024. Prior to this role, Leslie held positions as Sr Project Manager at WGA Consulting Engineers and Project Manager at Langan Engineering & Environmental Services. Additional experience includes leadership as Team Leader at WGI and various project management and engineering roles at PRD Land Development Service, LLC, EMAS GROUP, and Duplantis Design Group, PC. Leslie began a career in civil engineering as an Engineering Intern at Duplantis Design Group after earning a Bachelor of Science in Civil Engineering from the University of Houston.
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Gradient Group, LLC
Gradient Group, LLC is a local, woman-owned civil engineering firm that specializes in integrated planning, engineering and design services for public and private sector clients. Led by industry leaders, Stephanie Anderson, PE and T. Wayne Holcombe, the firm provides value through creative and cost-effective design solutions. Our Expertise With extensive experience communicating with governing agencies, Gradient provides expert services backed with a strong local knowledge and perspective. Our delivery of comprehensive services is efficient in terms of time, cost and ability to respond. We are proud to serve the Texas market, providing solid engineering solutions to help our communities thrive. The Gradient team looks at every relationship as a partnership, and every project as an opportunity to exceed expectations. We look forward to the opportunity to help assist you on your next project. Minority Certifications: State of Texas Comptroller’s Office, Historically Underutilized Business (HUB) #485321 City of Houston Women Business Enterprise (WBE) #15-05-12872 City of Houston Disadvantage Business Enterprise (DBE) Small Business Enterprise (SBE) Hire Houston First (HHF) Technical Certifications: TxDOT Pre-Certifications Firm sequence #4126 Work categories 1.1.1 Policy Planning 1.2.1 Systems Planning 1.3.1 Subarea/Corridor Planning 1.4.1 Land Planning/Engineering 1.5.1 Feasibility Studies 4.1.1 Minor Roadway Design 4.2.1 Major Roadway Design 7.1.1 Traffic Engineering Studies 7.2.1 Traffic Signal Timing 7.4.1 Traffic Control Systems Analysis, Design & Implementation 7.5.1 Intelligent Transportation Systems 8.1.1 Signing, Pavement Marking & Channelization 8.3.1 Signalization 10.1.1 Hydrologic Studies 10.2.1 Hydraulic Design 10.3.1 Complex Hydraulic Design 10.4.3 Pump Stations-Structures 11.1.1 Roadway Construction Management & Inspection Non-listed categories Utility Coordination Adjustment Utility Engineering