TL;DR: Staff augmentation is a hiring model in which a provider employs contract engineers who join your team and take day-to-day direction from your managers. In the US, providers bill the engineer's pay rate plus a markup, and Robert Half's public contract with a Texas purchasing co-op sets that markup at 70% for IT roles. Engineers from Asia hired through Second Talent cost $23 to $39 an hour, billed monthly.
The 57 largest IT staffing firms in the US billed $27.4 billion in 2025, 4.4% less than the year before, according to Staffing Industry Analysts.
SIA puts that third straight year of decline down to offshoring, AI-assisted coding, the end of the post-pandemic hiring bubble and buyers moving spend from staffing to IT solutions.
- 1The provider is the legal employer; you direct the work. Blur that line and you risk what Microsoft paid in the permatemp case: $96.9 million plus 3,000 contractors moved onto its payroll.
- 2Benefits are 30% of what US private employers spend per hour worked, which is why a direct hire costs more than the salary on the offer letter.
- 3Converting a contractor to your payroll often carries a fee. Robert Half's scale starts at 25% of salary and drops to zero after 640 billed hours.
- 4AI skills carry a 62% average wage premium, so AI staff augmentation is priced off a different rate card from general development.











