Company lists · Data refreshed September 2026

Top 25 HR outsourcing firms based in Boston, United States

Name: HR outsourcing firms based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 86 companies tracked

RevenueBase identified 86 HR outsourcing firms headquartered in Boston, United States as of September 2026 and tracks 864 professional contacts across them, including 316 with verified work emails. Across the United States, New York is the largest hub for this category (417 companies); Boston has 86.

This list covers HR outsourcing firms headquartered in Boston, United States, 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 30, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

86Companies

864Contacts tracked

316Verified emails

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The 25 largest HR outsourcing firms based in Boston, United States

Ranked by team size

Top 25 of 86 HR outsourcing firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to HR outsourcing firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Sevenstep	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	201-500	251 contacts →
	Indirect evidence “Sevenstep, a KellyOCG® company, is a global leader in talent acquisition solutions and provider of world-class permanent hiring, total talent management, predictive analytics, and…” Source: RevenueBase Database · checked Sep 30, 2026
2	Flexspring	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	51-200	112 contacts →
	Partial evidence “Flexspring focuses exclusively on HR data integration.” Source: RevenueBase Database · checked Sep 30, 2026
3	Xperttech INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	51-200	77 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
4	Marchon Partners	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	201-500	31 contacts →
	Indirect evidence “Marchon Partners is an innovative Human Capital Management company founded by seasoned industry professionals who had a passionate goal to change the paradigm of how our industry…” Source: RevenueBase Database · checked Sep 30, 2026
5	NRS Global Partners, LLC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	51-200	28 contacts →
	Indirect evidence “A leading Human Resource Advisory firm providing senior - level executive search and consulting services to clients primarily in the Healthcare, Pharmaceutical / Life Sciences and…” Source: RevenueBase Database · checked Sep 30, 2026
6	Positively Partners	Strong evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	24 contacts →
	Strong evidence “Positively Partners specializes in HR outsourcing, management consulting and executive search.” Source: RevenueBase Database · checked Sep 30, 2026
7	Clearrock, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	24 contacts →
	Indirect evidence “ClearRock is a true partner in addressing the complex needs of businesses and individuals throughout all phases of the employment lifecycle: selection, leadership development, and…” Source: RevenueBase Database · checked Sep 30, 2026
8	Clear Point Consultants	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	20 contacts →
	Indirect evidence “Clear Point Consultants is a high-end, woman-owned, boutique talent solutions firm providing contract, permanent, and executive placement services.” Source: RevenueBase Database · checked Sep 30, 2026
9	AIM HR Solutions	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	19 contacts →
	Partial evidence “At AIM HR Solutions, we’re all about helping businesses tackle their HR challenges with real-world, practical support.” Source: RevenueBase Database · checked Sep 30, 2026
10	Vacaré Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	14 contacts →
	Indirect evidence “We Build Your Team While You Build Your Company.” Source: RevenueBase Database · checked Sep 30, 2026
11	Pappas & Pappas	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	12 contacts →
	Indirect evidence “Founded in 1997 as Pappas & Pappas Consulting, today our firm provides unparalleled Human Resources Search, Executive Search, Career Management, and Career Transition services to…” Source: RevenueBase Database · checked Sep 30, 2026
12	Anchorpoint Staffing Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	7 contacts →
	Indirect evidence “We are your premier partner in staffing solutions for Accounting & Finance, Human Resources, and Administrative roles.” Source: RevenueBase Database · checked Sep 30, 2026
13	Elysian HR Consulting	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1-10	7 contacts →
	Partial evidence “Elysian HR Consulting is a boutique firm specialized in assisting small-mid size companies in the biotech, biopharma and medical device industry.” Source: RevenueBase Database · checked Sep 30, 2026
14	Northstarpmo INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	6 contacts →
	Partial evidence “NorthstarPMO is a trusted provider of Fractional HR and People Operations services that help businesses strengthen their teams, reduce risk, and achieve their goals.” Source: RevenueBase Database · checked Sep 30, 2026
15	Talent Track Corp	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1-10	6 contacts →
	Indirect evidence “Talent Track provides talent acquisition strategy and support for companies by creating or redesigning their hiring strategies and processes.” Source: RevenueBase Database · checked Sep 30, 2026
16	Interim Fractional HR	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1-10	5 contacts →
	Partial evidence “People Vantage HR provides interim / fractional / contract HR consulting services, interim HR leadership, and HR project management to organizations at any stage of their business…” Source: RevenueBase Database · checked Sep 30, 2026
17	Daniel Roberts	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	5 contacts →
	Indirect evidence “Daniel Roberts is a 40 year old Boston based recruiting firm that specializes in placing profesionals in Administrative, Accounting/Finance, Human Resources, and Sales & Marketing…” Source: RevenueBase Database · checked Sep 30, 2026
18	Hopdov, LLC	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1-10	4 contacts →
	Partial evidence “We are your secret weapon: a contemporary HR team focused on people and compliance.” Source: RevenueBase Database · checked Sep 30, 2026
19	Alliance Networks Technical Recruiting Contingent Workforce & Permanent Recruiting Nationwide	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	11-50	4 contacts →
	Indirect evidence “Founded in 2004, Alliance Networks is a full-service staffing firm who specializes in helping our partners grow their permanent and contingent workforce.” Source: RevenueBase Database · checked Sep 30, 2026
20	Lydon Consulting	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1-10	4 contacts →
	Partial evidence “Lydon Consulting is a Healthcare HR Consulting firm based in Boston.” Source: RevenueBase Database · checked Sep 30, 2026
21	The Talenthaus	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1-10	4 contacts →
	Indirect evidence “The TalentHaus specializes in developing innovative and streamlined people solutions that empower organizations of all sizes to scale on demand.” Source: RevenueBase Database · checked Sep 30, 2026
22	Smart Startup Hr, LLC	Partial evidence	Boston, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “Smart Startup HR is a boutique HR consulting firm specializing in support for startups, small to midsize organizations and nonprofits.” Source: RevenueBase Database · checked Sep 30, 2026
23	enjinia.io	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “Enjinia.io was created to help organizations establish a engineering competitive edge by becoming the "Employer of Choice" in one of the most highly competitive talent markets.” Source: RevenueBase Database · checked Sep 30, 2026
24	NGI Solutions	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “NGI is here to provide the best solutions on the market and to have conversations that make positive impacts on business and employee outcomes.” Source: RevenueBase Database · checked Sep 30, 2026
25	Thrivehr	Partial evidence	Boston, United StatesHQ checked Sep 30, 2026	1-10	2 contacts →
	Partial evidence “At ThriveHR, we're more than just an HR consultancy - we're your dedicated growth partners.” Source: RevenueBase Database · checked Sep 30, 2026

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: HR outsourcing firms. 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 HR outsourcing firms.
Partial evidence: Its own public description names part of HR outsourcing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name HR outsourcing firms. 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 86 HR outsourcing firms based in Boston, United States

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HR outsourcing firms based in Boston, United States at a glance

As of Sep 30, 2026

36.6%Verified-email coverage

10.0Average contacts per company

1-10Median size (employees)

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 86 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 HR outsourcing firms, 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 Boston, United States whose own description of what they do matches “HR outsourcing firms”. 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 HR outsourcing firms), 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 HR outsourcing firms, and records with no verified work email. Companies headquartered outside Boston 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, 316 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 30, 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.

HR outsourcing firms by metro in the United States

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 HR outsourcing firms, 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 HR outsourcing firms are there based in Boston, United States?

RevenueBase identified 86 HR outsourcing firms headquartered in Boston, United States 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?

Sevenstep, headquartered in Boston, tops this list with the largest team on record.

Which city in the United States has the most HR outsourcing firms?

New York leads the United States with 417 headquartered companies, followed by Atlanta (236) and Houston (217). Boston has 86.

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 316 verified decision-maker contacts tracked across these 86 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 30, 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.