Allyssa Johnston

Allyssa Johnston possesses extensive experience in fraud strategy and data analysis, currently serving as a Technical Program Manager for Fraud at Remitly since September 2025. Previously, as a Senior Associate in Fraud Strategy at Ramp, responsibilities included managing various fraud strategies and implementing A/B testing to optimize fraud rule performance with notable improvements in user experience. At Square, contributions as a Risk Data Analyst involved identifying fraud trends and developing risk assessment rules, along with data analysis using SQL and Python. Earlier roles include a Data Science Intern and Product Data Scientist at TunnelBear, where Allyssa provided data insights for product and marketing initiatives and managed financial risk strategies. Initial experience included data management at The Hospital for Sick Children and administrative support at Scheidt & Bachmann. Allyssa holds a Bachelor of Mathematics in Applied Mathematics from the University of Waterloo (2015-2020).