A large-scale tech worker sentiment survey reveals a mix of emotions among over 8,200 respondents.Tech workers are experiencing significant burnout, with nearly half reporting high levels.Startup founders emerge as the happiest group in tech, while managers are seen as needing improvement.Hybrid workers are the happiest, with in-office workers feeling better about their career prospects.Smaller company employees fare better in various work sentiment measures compared to large-company counterparts.Mid-career tech professionals face the most challenges, including burnout and lower job enjoyment.There is widespread uncertainty and lack of career clarity among tech workers, impacting engagement and outlook.Female tech workers show slightly higher burnout levels but also report higher engagement and sense of belonging.AI is a significant concern for tech workers, with many expressing worries about its impact on their roles in the future.