What Nelson Engineering Co. does

Nelson Engineering Co. is a Merritt Island, Florida-based engineering, architecture, and systems integration firm founded in 1993 and operating as a wholly owned subsidiary of Salas O'Brien. It provides mission-critical engineering services — including mechanical, electrical, plumbing, and fire protection (MEP/FP) design, civil and structural engineering, architecture and interiors, reliability engineering, commissioning, facility condition assessments, environmental studies and permitting, power infrastructure modernization (microgrids, DER, substation design), and incident energy/arc-flash studies — to federal agencies, aerospace and defense contractors, and select private-sector clients.

Its primary customers are federal: NASA's 10 Field Centers (where it codified the agency's Condition-Based Maintenance standard covering 313 million square feet), the Missile Defense Agency (recently awarded a seat on the SHIELD Contract), the US Marine Corps (microgrid and CHP systems at installations in Japan), USACE, USAMRIID (BSL-2/-3/-4 high-containment laboratories), United Launch Alliance (Launch Complex 41 Vulcan modifications), and Brookhaven National Laboratory (NSLS II commissioning). Documented outcomes include an expected $1B+ in NASA helium-leak mitigation savings over ten years, a 28-structure consolidation at Johnson Space Center, and a 20-foot Ammonia Vapor Containment Facility expansion delivered on-budget while keeping the facility operational.

The firm operates a project-based professional services model, bidding and negotiating contracts on a quote basis with federal and enterprise clients, delivering work through on-site engineering teams and distributed offices. Its differentiators are regulatory-domain expertise in federal facility environments, multi-disciplinary engineering depth, standardized reliability methodologies, and incumbency in highly specialized mission-critical programs (missile defense, space launch, high-containment labs). It is privately held, with 51–100 employees, and has no disclosed AI/ML capabilities.

Name

Nelson Engineering Co.

Legal name

Salas O'Brien

Website

https://nelsonengrco.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

51–100 employees

Short description

Nelson Engineering Co., a Salas O'Brien subsidiary, provides mission-critical MEP/FP, civil, structural, reliability, environmental, and power infrastructure engineering services primarily to U.S. federal agencies (NASA, MDA, USMC, USACE, USAMRIID) and aerospace/defense clients.

Ownership category

akta.pro rank

Product category

Defense & Space Engineering Services

NAICS

Engineering Services (541330), Engineering Services (54133), Architectural, Engineering, and Related Services (5413), Electrical Contractors and Other Wiring Installation Contractors (238210)

SIC

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

akta.pro primary industry

Mechanical, Electrical & Piping Installation (MEP) (EUAKAAAG)

akta.pro secondary industry

Fire Protection Systems Contracting (Sprinklers, Alarms, Suppression) (IMAFALAD)

Keywords

• Mission-critical engineering
• MEP design services
• Reliability engineering
• Facility condition assessment
• Defense infrastructure engineering

Headquarters

HQ city

Merritt Island

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Architectural Services: Professional engineering services including MEP design, civil engineering, structural engineering, architecture and interiors, environmental engineering, and related consulting services for mission-critical buildings and facilities. Revenue is generated through project-based professional services contracts with federal agencies (DoD, NASA, civilian agencies) and private sector clients.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Nelson Engineering Co. provides engineering, architecture, and systems integration services for mission-critical facilities and infrastructure, including missile defense. Its core offerings include Mechanical, Electrical, Plumbing, and Fire Protection (MEP/FP) design, civil engineering, structural engineering, and architecture and interiors, supported by specialty services such as reliability engineering, commissioning, sustainability engineering, facility condition assessments, power infrastructure modernization, environmental engineering, cost segregation studies, and incident energy/arc flash analyses.

Product overview

Nelson Engineering Co. is a wholly owned subsidiary of Salas O'Brien offering a comprehensive suite of mission-critical engineering and architecture services. The company operates as a services-based firm rather than a software platform, providing integrated MEP/FP, civil, structural, and specialized engineering services (Reliability Engineering, Sustainability Engineering, Environmental Engineering, Power Infrastructure Modernization) for federal agencies, defense, aerospace, and commercial clients. Core services are delivered through specialized disciplines that work together to support mission-critical facilities and infrastructure from planning through operational readiness.

Differentiator

Problem solved

Functional benefit

Products and services

• Mechanical, Electrical, Plumbing, and Fire Protection (MEP/FP) Design Comprehensive MEP/FP design solutions for mission-critical buildings and facilities, including office buildings, industrial complexes, research centers, testing facilities, hangars, and command-and-control centers, targeted at federal DoD, civilian agencies, aerospace contractors, and private-sector clients.
• Civil Engineering Site development services for the Federal DoD, civilian agencies, and private sector clients from planning through construction, covering local regulatory requirements, geotechnical conditions, climate, and stormwater considerations.
• Structural Engineering Tailored structural systems engineering for mission-critical new facilities, renovations, and expansions for federal and enterprise clients.
• Architecture & Interiors Architecture and interior design services spanning initial design strategy and planning through implementation and management, with expertise including corporate workplaces, data centers, critical facilities, manufacturing, laboratories, testing facilities, aerospace, transportation, and military installations.
• Reliability Engineering Reliability engineering services including failure mode and effects analysis (FMEA), criticality analysis (CA), fault tree analysis (FTA), root cause analysis (RCA), condition-based maintenance (CBM), reliability, availability, and maintainability (RAM), and alternative equipment maintenance (AEM), adhering to SAE JA1011, ISO 31000, and ISO 55000 standards.
• Sustainability Engineering (Lifecycle Engineering) Sustainability engineering combining reliability-centered maintenance and energy-efficiency solutions for mission-critical federal and commercial facilities to lower operational and maintenance costs while preserving operational readiness.
• Environmental Engineering Environmental studies and permits services, with top engineering firm status at Cape Canaveral Space Force Station and Kennedy Space Center, providing quick, regulator-aligned, and compliant project delivery.
• Power Infrastructure and Modernization System upgrade and modernization services including substation design, distributed energy resources (DER) integration, microgrids, geothermal energy, and renewable projects for enhanced reliability, grid interactivity, and long-term resilience.
• Facility Condition Assessments (FCA) Facility condition assessments using platforms ranging from BUILDER SMS to commercial software and integrated work management platforms to determine component inventory, remaining useful life, and replacement costs for prioritizing resource allocation.
• Commissioning (Cx) Commissioning services that integrate engineering, construction, and quality teams early in the Cx process, with documentation for regulatory review and testing that mimics real operating conditions.
• Cost Segregation Studies In-depth studies that analyze new construction or existing property renovations to optimally classify depreciable assets for accelerated depreciation and near-term tax savings.
• Incident Energy Analysis / Arc Flash Studies Programmatic power studies including incident energy and arc-flash hazard analyses, short-circuit, and protective device coordination studies performed in accordance with applicable NFPA, IEEE, and ANSI standards.
• Mission Assurance Engineering Comprehensive engineering, architecture, and systems integration for mission-critical facilities, infrastructure, and operations (including missile defense), integrating MEP, Civil, Structural, and Fire Protection with specialty services for federal agencies, aerospace contractors, and private sector clients.

Quantifiable outcome

• NASA expected to save over $1 billion over 10 years through reduced helium leaks from upgraded nitrogen and helium process mechanical control systems
• +2 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Healtheon, Inc.coreStrategic or Co-development PartnerDesign-build partnership with Healtheon, Inc. for NASA's Johnson Space Center's new Center Facility Support Building project. The collaboration incorporates advanced resilience features including hurricane-resistant warehouse design alongside historic preservation elements approved by the State Historic Preservation Office (SHPO).

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Salas O'Brien: Direct parent and operating peer — Salas O'Brien delivers the same MEP/FP, civil, structural, reliability, commissioning, and sustainability engineering services to federal and commercial mission-critical clients through a nationwide footprint; Nelson operates as a wholly owned subsidiary under this brand.
• HDR: Employee-owned engineering firm with strong federal, defense, and aerospace facility practices, offering MEP/FP, commissioning, and sustainability engineering to similar NASA, DoD, and intelligence community clients.
• Tetra Tech: Engineering and consulting firm with deep federal environmental, water, and facility engineering practices serving DoD and civilian agencies — closely aligned to Nelson's environmental engineering and federal facilities work.
• Jensen Hughes: Specialty fire protection engineering, life safety, and code consulting firm serving federal, defense, and high-containment laboratory clients — directly overlapping with Nelson's fire protection and high-hazard facility practice.
• NV5 Global: Technical engineering and consulting firm with infrastructure, environmental, and federal services practices that competes for similar public-sector facility, environmental, and geospatial engineering work.

Broad incumbents

• Burns & McDonnell: Large employee-owned engineering, architecture, and construction firm with deep federal/defense and aerospace practices (including launch complex and military installation work) competing for many of the same mission-critical facility task orders as Nelson.
• Jacobs Solutions: Global engineering and technical services firm with a large federal mission solutions and aerospace portfolio (including NASA, MDA, and DoD installation work), overlapping with Nelson's mission assurance and facilities engineering scope.
• AECOM: Global infrastructure consulting firm with substantial federal services and aerospace/defense facility engineering practices that compete for NASA, DoD, and high-containment laboratory engineering contracts alongside Nelson.
• Black & Veatch: Large employee-owned engineering, procurement, and construction firm with federal/defense and critical infrastructure practices, including power infrastructure and microgrid work comparable to Nelson's energy resilience services.
• Stantec: Global engineering and design firm with federal facility, defense, and environmental engineering practices that compete for similar mission-critical government task orders.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks2 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/nelson-engineering-co

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Nelson Engineering Co.