Josh Hammer is a Field Chief Cloud Security Architect. Colleagues describe him as "Josh is exceptional talent. We worked together just as deep learning was taking over machine learning. Together we proposed several breakthrough innovations to AWS security partners including use of machine learning to predict threats, detect anomalies, and discern outliers in network logs. Josh is an ideal sounding board for the security guidance I provide for AI/ML partners.", "Josh and I worked together in AWS ProServ.  Josh worked on many of AWS ProServ engagements that I was the lead Cloud Architect for.  Josh supported the engagements as the cloud security architect for datacenter migrations, end user computing and data lakes for analytics and Machine Learning.", and "Josh and I are both members of a fairly ambitious weekly study group on Quantum Computing. The study group aims to cover fairly advanced mathematically rigorous topics (e.g. advanced QC algorithms and quantum-key-distribution, axioms of QM etc...). I found Josh to be a highly engaged participant in this group and a committed student of this rather challenging material. I was particularly impressed with his positively-engaged attitude around taking on subjects of study that can be quite daunting. Josh clearly showed an energetic enthusiasm for taking on difficult new material, while also being quite supportive of other members of the group. Group study sessions may seem like an easy-going, low-stakes scene; but this group has some rather ambitious learning goals. In my view, this study-group's interactions represent - in many ways - a decent approximation as to what it would be like to work with each other in demanding technical team collaborations in a professional context. Based on my experience, I would feel quite comfortable working closely with Josh professionally; and so I'll give him a strong endorsement on his capacity as a high-functioning team player."