In the dynamic context of the global gig economy and Saudi Arabia’s Vision 2030, this study offers a novel examination of the impact of HR practices on gig workers’ job satisfaction and career sustainability in Saudi Arabia. Setting itself apart from prior research, it explores the uncharted interplay between HR practices and career longevity in the Saudi gig economy. Utilizing data from 344 gig workers, the study uncovers the intermediary role of job satisfaction in connecting HR practices to career sustainability, a dimension scarcely investigated before. It further assesses the often-assumed significant effects of demographic factors such as age and gender, revealing an unexpected, non-significant moderating impact. This research finds a strong positive correlation between effective HR practices, job satisfaction, and career endurance, highlighting the transformative power of HR strategies in the Saudi gig sector. These findings are vital for policymakers and practitioners focusing on Vision 2030 goals, underscoring the need for sophisticated HR strategies tailored to the unique Saudi gig environment. By bridging a critical knowledge gap and offering actionable insights, this study contributes significantly to the academic discourse on HR dynamics in gig economies and provides a foundation for future HR policy developments.