Job Title: FIS Connex Payment Switch DeveloperLocation: Houston TX or RemoteLong Term ContractRate: Only W2/1099 Profiles Job SummaryWe are seeking an experienced FIS Connex Payment Switch Developer to support and enhance our card payment switching platform. The role focuses on real-time transaction processing, ISO 8583 messaging, and integrations with card networks, core banking systems, ATMs, POS, and digital payment channels. This is a mission-critical role within a high-availability payments