London-based financial crime technology provider CompliX has announced the appointment of Andrew Mainstone as its new CEO, effective August 11, 2026, bringing his extensive experience in banking and financial crime compliance to the role.
Mainstone will be responsible for company strategy, commercial growth, strategic partnerships, customer relationships, and international expansion at CompliX. Munir Merchant, CompliX’s chief product officer and founder, noted that Mainstone brings a “rare combination of banking, financial crime, transformation, technology and commercial leadership.”
Mainstone’s career began in 1999 as a business analyst at JP Morgan Chase, followed by similar roles at Credit Suisse, Goldman Sachs, ABN Amro, and Citi, alongside a project manager position at BNY. He spent over five years as HSBC’s financial crime compliance global programme manager and later managed the anti-financial crime list management programme at Deutsche Bank from 2016 to 2019.
Mainstone and Merchant have a history of collaboration, with overlapping tenures at HSBC and Deutsche Bank. Merchant brought Mainstone to Contineo FRS as a director in 2019, where Mainstone was later promoted to managing director. He continued in this role following Contineo FRS’s acquisition by Plenitude Consulting in 2024. Merchant joined CompliX in June, assuming the title of founder, after his tenure at Plenitude Consulting.
Established in 2024, CompliX provides a financial crime platform designed to automate tasks across the entire compliance lifecycle. Its modules include KYC, name screening, transaction monitoring and filtering, watch list and case management, and workflow orchestration.
