How Many People Work at Duolingo? Headcount and Employee Trends

Duolingo, the language-learning app and education company, employs roughly 855 people worldwide. Recent data shows 83 additions to the team and 45 departures, resulting in steady net growth. Employees support a product that reaches millions of learners and is built around a freemium mobile and web experience. The company maintains a diversified talent base that spans engineering, design, content, and business functions.

Engineering is Duolingo’s largest department at 347 employees, accounting for just over 40 % of total headcount and underscoring the product-centric nature of the business. Marketing and Product follows with 198 employees, reflecting the need to promote the brand and continuously refine the learning experience. Business Management, Human Resources, Operations, IT, Finance & Administration, Sales & Support, and Quality collectively comprise the remaining workforce, each ranging between two and eight percent of overall staff. Company-wide hiring outpaced attrition, resulting in a modest increase across most teams.

Duolingo’s headquarters in Pittsburgh houses the single largest concentration of employees at 289, while New York hosts 187 team members and serves as a key East Coast hub. Additional U.S. offices in Seattle, San Francisco, Los Angeles, Detroit, Boston, and Philadelphia contribute smaller but strategic groups that support engineering, design, and business operations. An international presence is anchored by a Berlin office, complemented by distributed talent classified under “Other,” which totals 279 employees and highlights the company’s flexibility toward remote and hybrid work arrangements.