What Souder, Miller & Associates does

Souder, Miller & Associates (SMA), legally Miller Engineers, Inc. d/b/a Souder, Miller & Associates, is an employee-owned, multi-disciplinary professional services firm founded in 1985 in Farmington, New Mexico. The firm delivers engineering, environmental, and geomatics consulting services through six core service lines — Water Resources, Civil Engineering, Transportation, Geomatics, Environmental Services, and Litigation Support — augmented by specialized offerings (Subsurface Utility Engineering, UAV/Drone surveying, Phase I/II/III ESAs, Infrastructure Asset Management, Renewable Energy Services, Telecommunications Engineering, and Intelligent Transportation Systems) and a wholly-owned federal subsidiary, Vigil Enterprises, Inc. Service delivery leverages industry-standard tools including Esri GIS (as an Esri Business Partner), a UAV survey fleet with eight FAA-certified pilots, mobile LiDAR, and geotechnical drilling and materials testing capabilities, with Vigil Enterprises providing FAR-compliant second-tier federal contracting to DOE and DoD facilities.

The firm operates on a project-based professional services model: revenue is generated through competitive RFPs, on-call master service agreements, and subconsultant engagements with prime A&E firms. Customers span federal agencies (EPA, Army Corps of Engineers, BIA, Air Force, Army, NASA, LANL, Sandia, Kirtland AFB), state departments of transportation (NMDOT primarily, plus CDOT, ADOT), tribal nations (Navajo Nation, Pueblo of Isleta, Pueblo of Laguna, Jicarilla Apache), local municipalities, and private developers including Maverik Stores, Dutch Bros, and renewable-energy developers (SunZia, Clines Corners Wind Farm, Red Horse Solar). Pricing is project-specific and quote-based with no public tiers, and revenue recognition follows standard cost-plus or fixed-fee professional services conventions.

Since 1985, SMA has grown from 7-10 staff to nearly 250 employees across 21 offices in six states (New Mexico, Colorado, Arizona, Texas, Utah, Wyoming), reaching a 1,000-mile footprint from Gillette, WY to El Paso, TX. The company established an Employee Stock Ownership Program in 2002, has executed 10 disclosed acquisitions (notably Gannett-Fleming West's NM Division in 2013, Vigil Enterprises in 2018, and Inberg-Miller Engineers in November 2022), and is currently ranked the 3rd-largest engineering firm in New Mexico and a Top 20 design firm in the Southwest per ENR. It holds the ENR Top 500 ranking of #444 (2021) and has received national ACEC Engineering Excellence recognition for its Cutter Lateral / Navajo-Gallup Water Supply Project work. Leadership transitioned to Marty Howell, P.E. as President in May 2025.

Name

Souder, Miller & Associates

Legal name

Miller Engineers, Inc. d/b/a Souder, Miller & Associates

Website

https://soudermiller.com

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

251–500 employees

Short description

Souder, Miller & Associates is an employee-owned, multi-disciplinary professional services firm providing engineering, environmental, and geomatics consulting to federal, state, local, and tribal government agencies and private clients across the Mountain West region of the United States.

Ownership category

akta.pro rank

Product category

Civil and Environmental Engineering Services

NAICS

Engineering Services (54133), Environmental Consulting Services (54162), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

akta.pro secondary industries

Systems Engineering & Technical Program Management (BPAHAIAI), Geotechnical & Subsurface Engineering Consulting (BPAHAIAB)

Keywords

• Civil engineering services
• Water resources engineering
• Environmental site assessments
• Geomatics and surveying
• Transportation engineering design

Headquarters

HQ city

Albuquerque

HQ country

United States

HQ region

North America

Offices12 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Engineering Consulting Services: Professional engineering services for water resources, civil engineering, transportation, and infrastructure projects billed on project fee basis
2. Environmental Consulting Services: Environmental site assessments, remediation, compliance, and regulatory support services for public, tribal, and private clients
3. Geomatics/Surveying Services: Land surveying, mapping, UAV surveys, GIS services, and subsurface utility engineering for engineering and construction projects

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Souder, Miller & Associates is a multidisciplinary professional services firm providing integrated engineering, environmental, and geomatics consulting to government agencies, tribal nations, and private sector clients across the Mountain West. Core offerings span water resources, civil engineering, transportation, geomatics/surveying, environmental services, and litigation support, delivered as project-based contracts from offices in New Mexico, Colorado, Arizona, Texas, Utah, and Wyoming. The firm supplements these with specialized services such as subsurface utility engineering, environmental site assessments, infrastructure asset management, renewable energy project support, telecommunications engineering, intelligent transportation systems, and federal A/E services through its wholly-owned subsidiary Vigil Enterprises, Inc.

Product overview

Souder, Miller & Associates (SMA) is a multi-disciplinary professional services firm offering integrated engineering, environmental, and geomatics services. The company operates as a unified service portfolio organized around six core service lines: Water Resources, Civil Engineering, Transportation, Geomatics, Environmental Services, and Litigation Support. These core services are delivered through specialized sub-service offerings including Subsurface Utility Engineering (SUE), UAV/Drone Surveying, Environmental Site Assessments, Infrastructure Asset Management, Renewable Energy Services, Telecommunications Engineering, Intelligent Transportation Systems (ITS), and Tribal Infrastructure Services. The portfolio is supplemented by Vigil Enterprises, Inc. (VEI), a wholly-owned subsidiary focused on federal A/E services. Services span from initial planning through design and construction observation, with a focus on public infrastructure, tribal communities, and private commercial development throughout the Mountain West region.

Differentiator

Problem solved

Functional benefit

Products and services

• Water Resources Services Comprehensive water resources engineering including planning, design, water supply wells, reservoirs, storage tanks, distribution, transmission, treatment, hydrogeologic investigation, pump testing, well siting, and asset management for communities and municipalities.
• Civil Engineering Civil engineering services for site development, infrastructure, grading, drainage, and utility engineering across commercial, residential, and public sector projects.
• Transportation Engineering Transportation design services including highway planning, intersection design, traffic engineering, signalization, intelligent transportation systems (ITS), and multimodal trail design.
• Geomatics Geographic data collection and analysis including surveying, mapping, UAV/drone surveys, boundary surveys, ALTA/NSPS surveys, construction surveys, GIS services, and subsurface utility engineering.
• Environmental Services Environmental consulting including Phase I/II/III Environmental Site Assessments, remediation, soil and groundwater investigation, spill response, monitoring well installation, and regulatory compliance.
• Litigation Support Expert witness and litigation support services for engineering and environmental matters.
• Subsurface Utility Engineering (SUE) Subsurface utility engineering, utility locating, and utility mapping supporting planning, permitting, design, and construction projects with in-house equipment and field crews, including utility records research, electromagnetic locating, ground penetrating radar, test holes, and nondestructive utility exposure.
• Environmental Site Assessments (Phase I, II, III) ASTM Standard Environmental Site Assessments to help clients assess environmental liability, with hundreds completed for property owners, developers, utilities, and government agencies.
• Infrastructure Asset Management Asset management training and plan development covering current asset state, level of service, critical assets, life-cycle costing, and long-term funding analysis.
• Renewable Energy Services Professional services supporting commercial and utility-scale renewable energy projects including solar and wind, with planning, permitting, civil engineering, environmental, and geomatics support from feasibility through construction.
• Telecommunications Engineering Telecom infrastructure design and permitting including fiber and subsurface utility design, ROW coordination, land use permitting, and construction support for telecommunication deployments.
• Tribal Infrastructure Services Comprehensive services for Native American tribal communities including infrastructure planning, utility design, SCADA/IoT integration, funding acquisition assistance, and cultural-specific project coordination.
• Federal A/E Services (Vigil Enterprises, Inc.) A/E services at the federal level for Department of Energy facilities since 1997 and Department of Defense since 2011, serving Los Alamos National Laboratory, Sandia National Laboratories, and Kirtland Air Force Base, delivered through Vigil Enterprises, Inc., a wholly-owned subsidiary acquired in 2018.

Quantifiable outcome

• 10,000+ Navajo Nation members provided clean, reliable potable water through Cutter Lateral project
• +3 more outcomes

Named customers15 records

Segments8 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Azurite Professional CommunitycoreStrategic or Co-development PartnerSMA is a member of Azurite Professional Community, an affiliation of professional services firms. Other members include Inberg-Miller Engineers and Gallatin Operational Solutions, enabling collaborative service delivery and shared resources across complementary disciplines.
• Inberg-Miller EngineerscoreStrategic or Co-development PartnerAffiliate relationship providing geotechnical and materials testing services through Inberg-Miller Engineers (IME). IME has drilling rigs and materials testing labs that complement SMA's engineering, environmental, and geomatics services.
• Affordable SolarminorStrategic or Co-development PartnerPartnership for Jicarilla West Solar Project (50 MW) providing environmental, survey, and civil engineering services
• Vigil Enterprises, Inc.coreStrategic or Co-development PartnerWholly-owned subsidiary of Miller Engineers, Inc. providing A/E services at federal level for DOE and DoD facilities since 1997. Serves as prime contractor for Los Alamos National Laboratory, Sandia National Labs, Kirtland AFB, WIPP, and NPS in NM.

Scale indicators10 records

Recent moves20 records

Expansion highlights7 records

Broad incumbents

• Tetra Tech: Large publicly traded engineering and consulting firm with deep water resources and environmental practice. Direct overlap on EPA, federal water/wastewater, and environmental remediation programs that SMA's federal services group pursues through Vigil Enterprises.
• Stantec: Global engineering, environmental, and geomatics consulting firm operating across the Mountain West with offices overlapping SMA's regional footprint. Competes on large municipal water, transportation, and tribal/municipal infrastructure work and can self-perform as prime where SMA operates as subconsultant.
• WSP USA: Global A&E powerhouse with substantial Mountain West presence. Operates as a prime contractor on federal IDIQs and large transportation/transit programs where SMA typically serves as a subconsultant for geomatics, SUE, or environmental services.
• AECOM: Global infrastructure consulting firm competing for federal (DOE, DoD, Army Corps) and large transportation contracts overlapping SMA's federal and DOT verticals, often engaging SMA as a local subconsultant.
• Jacobs Engineering: Large global A&E firm that overlaps with SMA on NMDOT, federal environmental, and LANL-area infrastructure work. Frequently engages SMA as a subconsultant for geomatics, environmental, and SUE scopes on large multi-year programs.

Direct peers

• Carollo Engineers: Employee-owned water and wastewater engineering firm with similar ownership profile and specialized water treatment focus. Directly comparable on water resources, treatment plant, and pipeline design; competes for the same municipal and tribal water authorities.
• Bohannan Huston: Albuquerque-based engineering, surveying, and geospatial services firm of similar size and service breadth. Competes head-to-head with SMA on New Mexico DOT, municipal infrastructure, water resources, and private commercial development site work.
• Wilson & Company: Mid-size privately held engineering, surveying, and planning firm headquartered in Kansas City with comparable Mountain West and Plains state coverage. Competitor on NMDOT, municipal water/wastewater, and federal A&E IDIQ pursuits across overlapping geographies.
• Molzen Corbin: Albuquerque-headquartered civil engineering, planning, and surveying firm of comparable scale. Overlapping client base across New Mexico municipalities, NMDOT, and private developers; competes directly on water, wastewater, and transportation RFPs.

Regional players

• Town & Country Engineering: Mid-size regional civil engineering firm serving the Intermountain West. Comparable in scale and service mix (civil/site, water, transportation) with potential overlap on Utah/Colorado municipal and DOT programs bordering SMA's El Paso/Cortez/Grand Junction footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/3030807
• Xx.com/soudermiller
• Facebookfacebook.com/souder-miller-associates-115688411791168

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Souder, Miller & Associates