PlatformSecurityEngineer

About Paystack Paystack's mission is to accelerate digital payments on the continent of Africa. Over 200K of some of the most renowned businesses in Nigeria, as well as a growing number of merchants in South Africa, Ghana, and Kenya use Paystack's modern payments gateway. They include the likes of Qatar Airways, MTN, Burger King, UPS, AXA Mansard Insurance, FilmHouse Cinemas, Smile Communications, Air Peace Airlines, Crocs, Under Armour, Richemont Lifestyle Group (RLG), and many others. In just over 10 years, our growing team has introduced a steady cadence of innovation within the online payments landscape, such as automated recurring payments, the ability for customers to pay directly from their bank accounts, automated chargebacks, and much more. We've been acquired by Stripe and are doubling down on the mission to help build out Africa's payments infrastructure. Paystack builds technology to help Africa's best businesses grow - from new startups, to market leaders launching new business models. We make it easy for businesses to accept secure payments from multiple local and global payment channels, and then we provide tools to help you retain existing customers, and acquire new ones. Role Summary Every engineering team at Paystack builds on a shared cloud platform. If that platform is not secure, nothing built on top of it is secure. This role owns that foundation - not as an oversight function or as a policy team but as the engineering layer that makes the platform trustworthy by design. The decisions made here are not team-level decisions. You will own Paystack's AWS organisation end-to-end: its architecture, its account structure, and the organisation-wide controls that govern how every team operates within it. The guardrails you set, the permission model you design, and the security primitives you build are what all engineering teams depend on to do their own work effectively. You are upstream of all of them, and what you build has direct consequences for Pa