Typically, work involved identifying if there were high priority issues that required immediate addressing, such as: a settlement file being processed twice, a 20% jump in bank rejections on a partner merchant, or an unacceptable loss to on-going scripted fraud activity. Absent the above, a typical day would involve ongoing project or implementation work (facilitating the processing of AmEx cards with a LATAM acquirer, for example).
I learned a huge amount of information regarding how fraud occurs in the eCommerce space, and the up-to-date techniques on how to prevent this activity without negatively impacting good customers. I am thus familiar with device fingerprinting, the best data points ("anchors") to model on in risk decisioning, and a variety of services which can complement a well-rounded risk system.
I never had any issues getting along with co-workers and management, the company has put together a strong team as it continues to expand into additional verticals. The most difficult part of the job was that there was occasional hesitancy to adopt/implement new practices.