一句话：通过对瑞典金融企业SAFe转型的探索性案例，揭示开发者福祉是组织社会技术可持续性的先行指标。
本文研究大型敏捷框架（LSA）在金融机构落地时，对开发者认知负荷、心理安全与长期社会技术可持续性的系统性影响。作者对一家经历SAFe转型的瑞典金融服务组织开展探索性案例研究，跨多个组织角色进行15次半结构化访谈，并采用反身性主题分析。分析识别出六种反复出现的社会技术张力，这些张力并非孤立问题，而是相互作用的系统：协调强度、治理模糊与交付压力递归地强化认知过载、防御性团队行为和社会技术债务累积。文章据此主张，开发者福祉不是边缘的人力资源议题，而是社会技术可持续性的先行指标。
Large-scale agile (LSA) frameworks are increasingly adopted by financial institutions to balance rapid digital innovation with complex regulatory requirements. However, the systemic impact of these frameworks on developer cognitive capacity, psychological safety, and long-term socio-technical sustainability remains under-researched. This paper presents exploratory case study of a Swedish financial services organization navigating a Scaled Agile Framework (SAFe) transformation. We conducted fifteen semi-structured interviews across multiple organizational roles and analyzed the data using reflexive thematic analysis. Our analysis identify six recurring socio-technical tensions shaping developer experience and team functioning. Rather than representing isolated challenges, these tensions form an interacting system. We synthesize these findings to explain how coordination intensity, governance ambiguity, and delivery pressure recursively reinforce cognitive overload, defensive team behavior, and socio-technical debt accumulation. We argue that developers well-being is a leading indicator of socio-technical sustainability, not a peripheral human resources concern.