ERSG

What ERSG does

ERSG is a privately-held specialist recruitment and workforce solutions firm founded in 2008 by Jim Ryan (CEO) and Lucien Sullivan (COO), headquartered in Bromley, United Kingdom. The company provides contract recruitment, permanent placement, and managed workforce services (MSP, RPO, Master Vendor, Statement of Work, On Demand, Hire-Train-Deploy) concentrated in renewable energy, power generation, transmission and distribution, marine, and broader energy-transition verticals including offshore wind, onshore wind, solar and energy storage, data centre build, green technology, and environmental services. ERSG serves enterprise clients including utilities, EPC contractors, OEMs, and project developers across global renewable energy project lifecycles.

The firm operates 16 offices across the UK and Europe, Asia, and the United States, supported by a proprietary CRM of more than 500,000 candidates and a track record of 20,000+ contractor placements since inception. Its core delivery model combines localized recruiter teams in project hubs (e.g., offshore wind in NW Europe, data centre build in the US, solar and storage in Asia) with embedded managed-service engagements that take over portions of clients' hiring processes end-to-end. Differentiated technical components are limited; the only disclosed technology is a keyword-based CV parsing tool used in candidate intake, with no public evidence of proprietary AI/ML matching or prediction systems. ERSG holds ISO, Achilles, and EcoVadis certifications, which serve as vendor pre-qualification for utility and EPC tenders, and was ranked 12th on the Recruiter HOT 100 in 2025.

Revenue mechanics are derived primarily from recruiter placement fees (contract margin spreads and permanent placement fees) and recurring managed-service fees from MSP/RPO contracts. The company has grown to 200+ employees globally and continues to expand geographically, with recent office additions in Germany, Japan, Taiwan, and South Korea, while broadening its vertical scope into data centre build and energy storage. ERSG is privately held and does not disclose revenue, headcount detail beyond a 200+ figure, or financial statements publicly.

Name

ERSG

Legal name

ERSG Limited

Website

https://ersg-global.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

101–250 employees

Short description

ERSG is a UK-headquartered specialist staffing firm founded in 2008 that places contractors and permanent hires across renewable energy, power, transmission, data centre build, and energy-transition verticals for utilities, EPCs, and OEMs globally, operating 16 offices across Europe, Asia, and the US.

Ownership category

akta.pro rank

Headquarters

HQ city

Bromley

HQ country

United Kingdom

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Contract Recruitment: Flexible contract/temporary/freelancer labour placement. ERSG sources specialized talent for short-term projects and urgent roles with global reach. Services include compliance and onboarding support. Having placed over 20,000 contractors since 2008.
2. Permanent Recruitment: Permanent placement and executive search services connecting businesses with top talent. Contingency-based model where clients are invoiced only after successful placement. Also offers retained search for executive-level hires.
3. Workforce Solutions (MSP/RPO): Managed Service Provider (MSP) for temporary worker management, Resource Process Outsourcing (RPO) for permanent hiring, Master Vendor (MV) engagements, Statement of Work (SOW), and Hire-Train-Deploy programs.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

ERSG is a specialist recruitment and workforce solutions provider serving the global energy, renewables, engineering, power, and built markets. It delivers contract recruitment, permanent recruitment, and outsourced workforce solutions (RPO, MSP, Master Vendor, SOW, On Demand, Hire-Train-Deploy) via dedicated vertical-specialist teams across 16 offices worldwide.

Product overview

ERSG is a recruitment services provider offering a unified platform of talent solutions rather than a modular software product. The core offering consists of three integrated service lines: Contract Recruitment (flexible temporary/freelancer staffing), Permanent Recruitment (contingency and executive search), and Workforce Solutions (encompassing RPO, MSP, Master Vendor, SOW, On Demand, and Hire-Train-Deploy). These services are delivered across specialized vertical markets including Offshore/Onshore Wind, Solar & Energy Storage, Data Centre Build, Marine, Transmission & Distribution, Power Generation, Green Technology, Energy Transition, and Environmental sectors. The company operates 16 offices globally across UK/Europe, Asia, and the US, providing compliant staffing solutions from local hubs to serve clients worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• Contract Recruitment Flexible contract, temporary, and freelancer labour solutions tailored to business needs, enabling rapid sourcing of specialised talent for short-term projects and urgent roles. Services include compliance, onboarding, payroll, mobilisation, and logistics, with global reach across EMEA and South America.
• Permanent Recruitment Connects businesses with top talent through contingency and retained executive search services, leveraging deep market knowledge and thorough selection processes for lasting success in permanent roles across EMEA, Americas, and Asia Pacific.
• Resource Process Outsourcing (RPO) Manages all or part of a client's permanent hiring process including program management, sourcing, onboarding, supplier management, and reporting as an extension of the client's team.
• Managed Service Provider (MSP) Simplifies management of temporary workers by handling hiring, reporting, supplier management, rate card management, and worker logistics including travel, accommodation, and onsite support. Works with existing VMS or new setup.
• Master Vendor (MV) Acts as sole supplier through exclusive agreement to serve as the primary source for sourcing and procuring all flexible staffing requirements for clients.
• Statement of Work (SOW) Combines resource management and project expertise to deliver projects on time and within budget through a shared-risk approach with clear tasks, defined criteria, and flexible pricing options.
• ERSG On Demand Flexible recruitment solution for both permanent and contract hires, deploying a Resource Manager and specialist recruiters to meet immediate client resourcing needs with scalable capabilities.
• Hire, Train & Deploy Expands talent pools by hiring interns and career shifters, upskilling them for specific roles through collaboration with clients to source, hire, and train local talent for specialised positions.
• Workforce Solutions (umbrella offering) Comprehensive workforce management offering covering mobilisation, compliance, payroll, upskilling, contingent staffing, vendor management, and custom solutions for permanent hiring, matching the full workforce needs of clients.

Quantifiable outcome

• 1,300+ personnel sourced across multiple projects, providing 55% of client's global contingent workforce
• +4 more outcomes

Named customers6 records

Segments10 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered core.

• One Tree PlantedcoreStrategic or Co-development PartnerFor every successful contract placed, ERSG plants a tree through partnership with One Tree Planted, helping reduce carbon footprint and support global reforestation initiatives.
• EcoVadiscoreStrategic or Co-development PartnerERSG partners with EcoVadis, the global standard for sustainability ratings, to continuously improve environmental impact and ESG performance. Collaboration helps identify opportunities to reduce carbon emissions, enhance compliance, and promote sustainable procurement practices.

Scale indicators11 records

Recent moves12 records

Expansion highlights5 records

Direct peers

• Airswift: Global workforce solutions provider specializing in the energy, process, and infrastructure sectors. Directly comparable specialist recruiter competing with ERSG for the same renewable energy and engineering contract/permanent mandates.
• Spencer Ogden: Specialist recruiter focused on energy, engineering, and infrastructure markets. Closest head-to-head competitor to ERSG in offshore wind, oil & gas, and renewables verticals with similar vertical specialist delivery model.
• Fircroft: Global technical recruiter serving the oil & gas, petrochemical, mining, and renewables sectors. Comparable specialist recruitment model with multi-service offerings including contract and permanent placement.
• NES Fircroft: Workforce solutions specialist in the energy, infrastructure, and engineering sectors. Directly comparable to ERSG in serving renewables and transmission clients with contract and permanent recruitment plus MSP/RPO services.
• Brunel International: Global specialist staffing provider focused on energy, mining, and infrastructure with renewable energy expertise. Comparable specialist recruitment model targeting similar renewable energy and built environment clients.

Broad incumbents

• Hays: Large global publicly-listed recruitment firm with dedicated energy & resources practice. Competes with ERSG in renewables and engineering roles but as part of a much broader portfolio across multiple sectors and geographies.
• ManpowerGroup / Experis: Global staffing and workforce solutions leader with energy and engineering capability through its Experis brand. Overlaps with ERSG's MSP/RPO services but covers many additional sectors and is far larger.
• Michael Page / PageGroup: Global publicly-listed recruitment group with engineering and energy desks. Competes with ERSG in permanent placement and executive search for technical energy roles but operates across a much broader portfolio.
• Robert Half: Global professional staffing firm with project placement and workforce solutions capabilities. Tangentially comparable through MSP/RPO offerings; less specialized in renewables than ERSG.
• Adecco Group: One of the world's largest staffing groups with energy and engineering verticals. Overlaps with ERSG in MSP and contract staffing but with vastly broader scale and a generalist go-to-market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/ersgwind

Revenue estimate

Valuation estimate

Number of profiles

Profiles23 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 ERSG