What Sterling Engineering does

Sterling Engineering is a privately held, employee-owned (ESOP) engineering consulting and technical staffing firm founded in 1969 and headquartered in Westchester, Illinois. The company operates a dual-service platform: Sterling Engineering delivers project-based consulting across product engineering, process engineering, equipment engineering, project management, CQV validation, start-up/documentation, and fractional leadership, while Sterling Staffing (a wholly owned subsidiary) provides contract, contract-to-hire, direct-hire, embedded program, payrolling, and retained search placement of specialized technical talent. Together the firm serves clients in automation & robotics, life sciences (FDA/cGMP compliance, pharmaceutical and medical device manufacturing), energy & infrastructure (utilities, grid modernization, utility-scale solar), renewable energy, food & beverage, manufacturing/OEM/R&D, AEC, aerospace, heavy equipment/transportation, and technology/data centers.

The firm generates revenue through professional-services fees, including billable engineering hours and project-based consulting engagements, alongside staffing markups on contract placements and direct-hire placement fees. Pricing is quote-based and not publicly disclosed. Sterling's go-to-market is sales-led and relationship-driven: over 90% of business comes from repeat clients, supported by a nationwide footprint across 41 states, embedded workforce programs, and a network of 600+ partnerships that have delivered 100K+ hours of engineering projects. Customer concentration spans Fortune 500 enterprises to growth-stage startups, with notable engagements including a $10M turbocharger refurbishment automation line for a custom equipment manufacturer, COVID-era mask production pivots for a healthcare manufacturer, parcel feasibility studies for a global logistics firm, and contingent workforce management for a global confectioner.

The company's core technical capabilities span automation design, robotic work cell integration, PLC programming, HMI development, servo systems, and RFID-enabled assembly lines. The March 2026 acquisition of Absolute Machine Control Technologies (AMCT) materially extended Sterling's machine-controls and system-integration capabilities, positioning the firm as a single-source design partner for industrial automation. The company maintains multiple ESOP, HIPAA, CCPA, and GDPR compliance postures and has won ClearlyRated Best of Staffing awards consecutively from 2023 through 2026.

Name

Sterling Engineering

Legal name

Sterling Engineering, Inc.

Website

https://sterling-engineering.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

251–500 employees

Short description

Sterling Engineering is a privately held, ESOP-structured engineering consulting and technical staffing firm founded in 1969, serving Fortune 500 and growth-stage clients across 41 U.S. states with automation, life sciences, energy, food & beverage, and manufacturing engineering projects and contingent workforce solutions.

Ownership category

akta.pro rank

Product category

Engineering Services and Technical Staffing

NAICS

Engineering Services (54133), Management, Scientific, and Technical Consulting Services (5416)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Industrial & Process Engineering Consulting (BPAHAIAF)

akta.pro secondary industries

Product Design & Mechanical Engineering Consulting (BPAHAIAJ), Systems Engineering & Technical Program Management (BPAHAIAI), Civil, Construction & Infrastructure Engineering Staffing (BPACADAH)

Keywords

• Engineering consulting services
• Technical staffing solutions
• Contract engineering recruitment
• Automation project engineering
• Life sciences engineering staffing

Headquarters

HQ city

Westchester

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Provides project engineering, project management, product engineering, process engineering, equipment engineering, start-up and documentation, and fractional leadership services to manufacturing, OEM, and R&D clients.
2. Technical Staffing Services: Offers contract (temporary), contract-to-direct, and direct-hire specialized technical talent placement. Services include short or long-term contracts, embedded programs, payrolling, retained search, and customized workforce solutions across 41 states.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels6 records

Core offering

Sterling Engineering is a dual-service engineering firm delivering project-based engineering consulting (strategy, project management, product, process, equipment engineering, CQV, start-up and documentation) and technical staffing (contract, contract-to-direct, direct-hire, retained search, embedded programs, payrolling) across automation, life sciences, energy & infrastructure, renewable energy, food & beverage, manufacturing/R&D, and technology sectors. The company serves enterprise manufacturers, OEMs, and R&D clients across 41 U.S. states.

Product overview

Sterling Engineering offers a dual-service model combining Engineering Consulting and Technical Staffing. Engineering Consulting includes strategy, project management, product engineering, process engineering, equipment engineering, and start-up documentation across industry verticals including automation & robotics, life sciences, food & beverage, energy & infrastructure, and manufacturing. Technical Staffing provides contract, contract-to-direct, and direct-hire placement of specialized technical talent. The company also offers embedded workforce programs and fractional leadership services.

Differentiator

Problem solved

Functional benefit

Products and services

• Engineering Consulting Comprehensive engineering consulting including strategy, project management, product engineering, process engineering, equipment engineering, start-up and documentation, and CQV services for manufacturing, OEM, and R&D clients across automation, life sciences, utilities, renewable energy, food and beverage, manufacturing, and technology sectors.
• Technical Staffing Contract (temporary), contract-to-direct, and direct-hire specialized technical talent placement. Includes short or long-term contracts, embedded programs, payrolling, and retained search across 41 states. Recognized in the top 1% of staffing companies nationally, serving clients from Fortune 500 to innovative start-ups.
• Fractional Leadership Provides part-time executive and leadership support for organizations needing experienced engineering management without committing to full-time hires.
• Embedded Workforce Program Provides dedicated engineering teams embedded within client organizations for ongoing project support and integrated workforce delivery.
• Life Sciences Engineering Services Engineering consulting and staffing for the life sciences industry, including FDA/cGMP compliance, pharmaceutical equipment engineering, medical device development, and CQV services.
• Automation and Robotics Engineering Services Engineering consulting focused on automation and robotics, including robotic work cell design, automation design, machine controls, PLC programming, HMI, servo systems, and integration for manufacturing and OEM clients.

Quantifiable outcome

• 92% repeat business and candidates placed in 41 states
• +3 more outcomes

Named customers8 records

Segments10 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Absolute Machine Control Technologies, Inc. (AMCT)coreStrategic or Co-development Partner · 31 March 2026Acquisition of AMCT, a Rockford, Illinois-based controls engineering and system integration company founded in 2008 by Jeff Schlais. The acquisition extends Sterling's capabilities into machine controls, adding expertise in electrical and software design for industrial machine controls, PLC programming, HMI, servo systems, and retrofits. Positions Sterling as a single-source design partner for automation machines.

Scale indicators6 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• Randstad Engineering: Randstad is a global staffing leader with a dedicated US engineering practice that competes with Sterling across contract engineering, direct hire and project-based consulting; while much larger, its engineering vertical overlaps Sterling's services and client base.
• ManpowerGroup Engineering: ManpowerGroup is one of the world's largest staffing firms with engineering and skilled-trade placement capabilities across the US, offering contract and direct-hire technical talent that competes for the same enterprise clients Sterling serves.
• Hays Engineering: Hays is a global specialist recruiter with a sizable US engineering and life-sciences practice, offering contract and permanent technical placement - a broader, publicly traded incumbent that competes for the same skilled engineering talent pool Sterling cultivates.

Direct peers

• Actalent: Actalent is the engineering and sciences services arm of Allegis Group, offering contract, contract-to-hire and direct-hire engineering staffing plus consulting across aerospace, automotive, life sciences, energy and manufacturing - directly overlapping Sterling's dual consulting/staffing model.
• Aerotek: Aerotek is a leading US technical, engineering and industrial staffing firm that places contract and direct-hire talent across manufacturing, life sciences, energy and engineering disciplines - Sterling's core verticals - and operates embedded workforce programs analogous to Sterling's offering.
• Kforce: Kforce is a national professional staffing firm focused on technology and engineering talent placement with contract, contract-to-hire and direct-hire solutions - directly comparable to Sterling Staffing's technical staffing model across similar end markets.
• The Judge Group: The Judge Group provides engineering, technical and IT staffing as well as consulting and project services across manufacturing, life sciences and energy - a near-identical dual consulting/staffing model to Sterling's, with comparable client size and engagement structure.
• Apex Systems: Apex Systems is a technical and engineering staffing firm (part of ASGN) that delivers contract and direct-hire talent alongside project consulting to enterprise clients in manufacturing, life sciences and energy - mirroring Sterling's blend of staffing and consulting.
• Volt Consulting Group: Volt provides managed staffing, engineering services and project consulting across manufacturing, life sciences and industrial markets in North America - directly comparable to Sterling's combination of contract staffing and engineering project delivery.
• Insight Global: Insight Global is a large US staffing firm placing engineering, technical and professional talent on contract and direct-hire bases, often through embedded programs, serving many of the same Fortune 1000 manufacturing and industrial clients as Sterling.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/sterlingeng
• Xx.com/sterlingeng
• LinkedInlinkedin.com/company/sterling-engineering

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Sterling Engineering