About Unlimit Unlimit is a global fintech ecosystem built to eliminate financial borders holding businesses back. The company provides the extensive infrastructure needed to scale globally, integrating payment processing, multi-currency business accounts, BaaS and crypto gateways into a single, intelligent platform. Across 17 offices globally, Unlimit bridges hyper-local expertise with a high-capacity financial network, giving companies the agility to expand across regions with operational confidence and speed. Driving the evolution of payments, Unlimit is transforming its infrastructure from human-operated fintech into AI-native financial infrastructure — where APIs are consumed by machines, integrations are negotiated by agents, and systems evolve continuously through intelligent automation. Our next users are not only humans. They are AI agents acting on behalf of humans and businesses. Unlimit serves more than the needs of businesses today; we are building the nervous system for a borderless global economy. Role Overview The Technical Support Engineer specializing in Alternative Payment Methods (APM) is a critical technical role responsible for the stability, performance, and reliability of all APM integrations within our PSP/fintech ecosystem. This engineer acts as the top-tier technical expert for merchants, internal Product/Engineering teams, and external payment partners. The primary focus is on resolving complex incidents, driving deep root-cause analysis (RCA), leading operational improvements, and guaranteeing seamless, high-volume transaction processing for all supported APMs. Success in this role requires advanced technical proficiency, superior analytical skills, and the ability to articulate complex issues clearly to both technical and non-technical audiences. As Unlimit evolves toward AI-native financial infrastructure, this role will also leverage intelligent monitoring, automation, and AI-assisted operational workflows to detect anomalies faster, improve incident response, and continuously enhance the reliability of payment integrations.