"Stack recruitment" refers to various specialized recruitment agencies (like Stack Recruitment, Stack Recruiting, Stack IT) that focus on tech/IT roles, using deep tech understanding, personalized strategies, and modern tools (like AI, data) to connect companies with talent, often emphasizing ethical practices, niche expertise (Web3, NetSuite, Cybersecurity), and solving the "talent gap" in fast-growing tech sectors. It can also broadly refer to the "recruiting tech stack," the tools used in hiring, or leveraging communities like Stack Overflow for sourcing.