Most “top IT staff augmentation companies” pages are written by one of the companies on the list, which then appears at number one. We publish this one and we are on it, so treat that as a declared interest rather than a hidden one. What follows is a comparison built on facts each firm publishes about itself, with the gaps marked rather than filled.
Every fact is quoted from a page the company itself controls. Clutch, Wikipedia, Crunchbase and press coverage were deliberately not used.
Where a firm publishes no figure, the cell reads “not published” rather than an estimate.
We publish this list and we appear on it, so treat that as a declared interest rather than a hidden one.
On this page
- How this comparison was built
- The comparison
- Three things the table will not tell you
- Who is missing, and why
- What to ask any firm on this list
- How IT staff augmentation services run, step by step
- What you get in writing from an IT staff augmentation company
- What IT staff augmentation costs, and what moves the number
- Questions about IT staff augmentation companies
- Related pages
- Talk to our engineers
How this comparison was built
Every fact in the table comes from the company’s own website, quoted from a page they control. Clutch profiles, Wikipedia, Crunchbase and press coverage were deliberately not used as sources of truth, because they are frequently stale and none of these firms controls what they say. Where a company does not publish a figure, the cell reads “not published” instead of an estimate.
Two consequences worth stating. First, some cells are empty that you would expect to be full: several large staffing firms publish revenue or recruiter counts but never an engineer headcount, and those are different quantities that should not sit in the same column. Second, one firm is missing entirely, explained below.
The comparison
| Firm | Headquarters | Self-reported size | Where delivery happens |
|---|---|---|---|
| Sthenos Technologies | Tysons, Virginia, with an office in North Bethesda, Maryland | Not published as a headcount | US, with a NeoSoft Tech partnership for additional engineering capacity |
| ScienceSoft | McKinney, Texas | “A team of 750+ architects of IT success” | US HQ plus “representative offices in the UAE, KSA, Europe, and Mexico”; “A Texas-based company with a full-scale development center in Mexico” (its site, September 2026) |
| BairesDev | California (state only; they do not name a city) | “Our 4,000+ software engineers span over 20 countries across Latin America” | Nearshore Latin America, per that same statement |
| TEKsystems | Hanover, Maryland | Not published as a headcount. They state “100+ Locations worldwide” and “$7B+ Annual revenue” | “dedicated national recruiting centers across the U.S.” |
| Insight Global | Atlanta, Georgia | Not published as a headcount. They state “2,000+ recruiters” | “5 global delivery centers in the US, India, and LATAM” |
| Everforth Apex (formerly Apex Systems) | Glen Allen, Virginia | “more than 4,000 internal employees and over 18,000 consultants actively working on assignment at any given time” (its site, September 2026) | “client delivery centers in Mexico and India” (its site, September 2026) |
| Andersen | Warsaw, Poland | “3,500+ in-house experts” | Development centres listed in Munich and Krakow; London is a representative office |
| Revelo | Miami, Florida | “over 250 remote employees” (this is Revelo’s own staff, not the size of its talent pool) | “distributed across United States and Latin America” |
Three things the table will not tell you
“Headquartered in the US” and “delivered from the US” are different claims
Several firms on this list hold a US headquarters while delivering from elsewhere, which is a legitimate model and often the cheaper one. It matters when your contract, your data residency rules or your security review assume otherwise. Ask where the engineers who will touch your systems actually sit, and get it in the statement of work rather than in a sales call.
Size figures are not comparable across firms
An engineer headcount, a recruiter headcount and an annual revenue figure answer different questions. A firm with 2,000 recruiters is telling you about its sourcing capacity, not about the bench. Compare like with like or not at all, which is why several cells here are deliberately blank.
The model matters more than the vendor
Staff augmentation, a dedicated team and project outsourcing fail in different ways, and choosing the wrong one is a more expensive mistake than choosing the wrong firm within the right one. Our comparison of staff augmentation, managed services and outsourcing covers where each breaks down.
Figure 1. Which model, before which vendor
The three models and what each asks of you restate our IT staff augmentation page; the test at the top is this page’s own: if the answer is “you do”, that is augmentation, and it only works if you have the management capacity to do it. The figure sorts situations, not firms.
Who is missing, and why
Toptal is absent. Their site returns an HTTP 403 to automated requests, so nothing about them could be verified from a page they control, and we would rather leave a known name off the list than publish facts we could not check. That is a limitation of this comparison, not a comment on the firm.
One name has also changed: Apex Systems now trades as Everforth Apex, and states on its own site that it “is part of the Commercial Segment of Everforth, Inc.” Comparison pages that still list it as Apex Systems have not been updated.
What to ask any firm on this list
- Where will the engineers physically be? Get the country in writing, not the head office.
- Who owns the code, the repository and the deployment credentials? Settle this before work starts, not at the end.
- What is the replacement obligation? Notice period, replacement window, and what happens to knowledge transfer during a swap.
- Who directs the work day to day? If the answer is “you do”, that is augmentation, and it only works if you have the management capacity to do it.
- What happens at the end? Handover, documentation and credential return should be defined at the start.
How IT staff augmentation services run, step by step
An augmented engineer is productive when your process absorbs them, not when their contract starts. The sequence below is the one our IT staff augmentation page sets out, written so you can hold any firm on this list to the same steps.
- Requirement intakeThe role, the stack, the seniority, the constraints and what done looks like on your board.
- ShortlistCandidates matched against that requirement rather than against availability.
- Interview and selectionWho interviews, how many candidates you see, and what happens when none of them fits, agreed in writing.
- Contract and accessRepository ownership, deployment credentials, confidentiality, the replacement obligation and the notice period.
- OnboardingEnvironment access, a working local build, an architecture walkthrough and a first small change shipped end to end.
- Knowledge transferDecisions recorded where your own team can find them, and documentation treated as a deliverable rather than a promise.
- Replacement, if neededNotice period, replacement window, and what happens to knowledge transfer during the swap.
- OffboardingHandover, documentation and credential return, defined at the start.
What you get in writing from an IT staff augmentation company
Every question in the list above ends in a clause you can hold a vendor to. Ask every one of the IT staff augmentation firms on your shortlist, Sthenos included, for the same six in writing.
- The country the engineers will work from, in the statement of work rather than the head office.
- Who owns the code, the repository and the deployment credentials, settled before work starts.
- The replacement obligation: notice period, replacement window and knowledge transfer during a swap.
- Named engineers on the contract, and a notice clause if they change.
- The documentation owed under the contract, not what a vendor promises to write.
- Handover and credential return at the end, defined at the start.
What IT staff augmentation costs, and what moves the number
The table compares location, size and delivery, not price. Sthenos publishes its rate: $150 to $250 per hour, depending on the seniority and mix of the team. On an augmentation engagement the rate is the visible number and the mix is the one that decides what you actually pay.
Seniority mix
A team weighted toward senior engineers costs more per hour and usually less per delivered feature.
Team size and composition
Four engineers and a lead is a different arrangement from one architect and one senior engineer, and the two can cost the same.
Engagement length
A short engagement carries the whole onboarding cost over a small amount of output; a longer one amortises it.
How scarce the technology is
A mainstream stack has a deep market, an unusual or legacy one a shallow one, and scarcity reaches the rate first.
Where the engineers sit
Geography moves the rate more than skill does, and it also moves data residency and contract terms.
Your own management capacity
Augmentation transfers direction to you, so an engineer added to a team with no spare review capacity produces less than the invoice implies.
These six drivers are the ones our IT staff augmentation page sets out, beside the ways the work can be priced.
Questions about IT staff augmentation companies
What is IT staff augmentation?
Staff augmentation adds engineers to a team you already run, working on your tools, in your process and against your definition of done. You manage the backlog, the architecture and the people day to day; the provider manages sourcing, employment, payroll, compliance and replacement.
How do IT staff augmentation companies compare on size?
Not directly. An engineer headcount, a recruiter headcount and an annual revenue figure answer different questions, and several large staffing firms publish revenue or recruiter counts but never an engineer headcount. A firm with 2,000 recruiters is telling you about its sourcing capacity, not about the bench.
Is nearshore IT staff augmentation the cheaper option?
Delivering from outside the US is a legitimate model and often the cheaper one; BairesDev, on this list, states that its engineers span over 20 countries across Latin America. Geography moves the rate more than skill does, and it also moves data residency and contract terms, so get the engineers’ country in the statement of work.
Why is Toptal not in this comparison?
Their site returns an HTTP 403 to automated requests, so nothing about them could be verified from a page they control. We would rather leave a known name off the list than publish facts we could not check, which is a limitation of this comparison, not a comment on the firm.
Is Everforth Apex the same firm as Apex Systems?
Yes. Apex Systems now trades as Everforth Apex, and states on its own site that it “is part of the Commercial Segment of Everforth, Inc.” Comparison pages that still list it as Apex Systems have not been updated.
Related pages
Services. IT team augmentation, software outsourcing services and managed services.
Compare and decide. Staff augmentation, managed services and outsourcing, IT outsourcing versus staff augmentation, healthcare software development companies, compared and MVP development companies, compared.
Reference. Before you hire us, on our About page and the production readiness checklist.
If you want to talk through which model fits your situation rather than which vendor, talk to our engineers. If you already know you need people rather than a project, our IT staff augmentation service explains how we run it.