Company lists · Data refreshed September 2026
Top 25 Petroleum engineering staffing agencies based in Singapore
RevenueBase identified 144 petroleum engineering staffing agencies headquartered in Singapore as of September 2026 and tracks 2,192 professional contacts across them, including 264 with verified work emails. Singapore is the largest hub.
This list covers petroleum engineering staffing agencies headquartered in Singapore, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest petroleum engineering staffing agencies based in Singapore
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 393 contacts → | ||||
Indirect evidence “Connect Energy Services is an internationally accredited recruitment and workforce solutions consultancy.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 222 contacts → | ||||
Partial evidence “Sheffield Energy is a global recruitment organization providing technical staffing and executive placement solutions to our clients around the world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 159 contacts → | ||||
Indirect evidence “Randstad is a global talent leader with the vision to be the world’s most equitable and specialised talent company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 90 contacts → | ||||
Indirect evidence “DADA CONSULTANTS, established in 2017, is committed to delivering top-tier recruitment services in Singapore.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 72 contacts → | ||||
Indirect evidence “Ocentra Offshore Pte.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 40 contacts → | ||||
Indirect evidence “Founded in 2017, RN Care Pte Ltd is a Singapore-based recruitment and executive search firm, focused on bridging the gap between employers and talent across multiple industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 38 contacts → | ||||
Indirect evidence “Oilfield Workforce is a global recruitment company headquartered in Singapore, listed on the Australian Stock Exchange (ASX: OFW).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 34 contacts → | ||||
Indirect evidence “ABI is a globally recognized award-winning multi-national organization specialised in Project Management and Skilled Human Capital for the Energy Industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 31 contacts → | ||||
Indirect evidence “Search Personnel is an established, leading and reputable recruitment company that brings effective services to individuals and organisations with a sense of urgency and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 31 contacts → | ||||
Indirect evidence “Quinnox Solutions specialises in the recruitment of technologies professionals in Singapore and the region.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 29 contacts → | ||||
Indirect evidence “In StaffKing, we believe that people are the key to a successful business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 27 contacts → | ||||
Indirect evidence “We are a specialist, independent, owner-managed over many years of experience in our niche sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 24 contacts → | ||||
Indirect evidence “Established in 1994, Kingsforce Management Services is a specialist recruitment firm that focuses on permanent, temporary and contract positions in the Oil & Gas, Construction…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 22 contacts → | ||||
Partial evidence “Focusing mainly in the Shipping, Trading, Marine, Offshore and Oil & Gas sector, Direct Search Global is a specialist recruitment company that provides staffing solutions to niche…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 20 contacts → | ||||
Indirect evidence “The CELER team provides a comprehensive suite of services including Construction & Project Management, Rigbuilding, Inspection & Integrity, Modifications & Upgrades and Subsea…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 19 contacts → | ||||
Indirect evidence “We provide a comprehensive end-to-end suite of human resource services ranging from sourcing and training of workers to provision of equipment kits such as personal protective…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 contacts → | ||||
Indirect evidence “At Quess Selection & Services (EA Licence Number: 23C2060), we are proud to be renowned as an intersection of technology and talent, a one-stop solution enabling modern…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 15 contacts → | ||||
Indirect evidence “With offices in Singapore, Malaysia, Indonesia, and the Philippines, i-Consultancy delivers tailored manpower solutions across diverse sectors, including Energy, Maritime…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 15 contacts → | ||||
Indirect evidence “Jadeclover is a full-service resourcing and recruitment agency delivering rapid and consistent mobilisation solutions to the oil and gas, energy and construction sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Partial evidence “With a comprehensive background in the central/prime engineering sectors, and a management team with experience spanning 25 years, Spinwell Global is a specialist international…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 13 contacts → | ||||
Indirect evidence “TSTAR Recruit is a specialist recruitment agency that provides expert consulting to companies operating within a broad range of industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 11 contacts → | ||||
Indirect evidence “Based in Singapore, FCS Careers was established in 1991 with the purpose of bringing talented individuals into leading organisations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 11 contacts → | ||||
Indirect evidence “We have a simple mission:"To be the No.1 global recruitment business in infrastructure and energy" We will do that by connecting top talent with leading organizations through…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 9 contacts → | ||||
Indirect evidence “At Recruit Lync Pte Ltd, located in Singapore, we are a premier employment agency supported by a team of experienced consultants specializing in various industries such as…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 9 contacts → | ||||
Partial evidence “Success Human Resource Centre (SHRC) has been in the staffing industry since February 1997 with the objective of providing quality and excellence recruitment and payroll services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: petroleum engineering staffing agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names petroleum engineering staffing agencies.
- Partial evidence
- Its own public description names part of petroleum engineering staffing agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name petroleum engineering staffing agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 144 petroleum engineering staffing agencies based in Singapore
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Petroleum engineering staffing agencies based in Singapore at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Singapore, so it is reported there. Company counts and contact totals on this page are exact for Singapore, over 144 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among petroleum engineering staffing agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Singapore whose own description of what they do matches “petroleum engineering staffing agencies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names petroleum engineering staffing agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among petroleum engineering staffing agencies, and records with no verified work email. Companies headquartered outside Singapore are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 264 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Petroleum engineering staffing agencies by metro
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names petroleum engineering staffing agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many petroleum engineering staffing agencies are there based in Singapore?
RevenueBase identified 144 petroleum engineering staffing agencies headquartered in Singapore as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Connect Energy, headquartered in Singapore, tops this list with the largest team on record.
Which city has the most petroleum engineering staffing agencies?
Singapore leads with 129 headquartered companies, followed by Ang Mo Kio (1) and Downtown Core (1).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 264 verified decision-maker contacts tracked across these 144 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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