Описание
About the role Billease operates consumer lending, merchant checkout, and digital banking products handling sensitive financial and personal data at scale. We run a cloud-native, microservices architecture on AWS/EKS, built primarily in Go and Python, backed by PostgreSQL/Aurora, Kafka, and ClickHouse, with native Android and iOS apps. We're looking for a hands-on Senior Cybersecurity Specialist who can break our systems before anyone else does — and then help us build them so they can't be broken.
This is a deeply technical, offensive-minded role that also drives secure-by-design practices across engineering. You'll run penetration tests, hunt for exploitable flaws across our apps, APIs, protocols, and infrastructure, and bring a modern, AI-augmented approach to finding and triaging security issues at scale. This is an individual-contributor role with significant influence.
You will not be managing a team — you will be the person engineers and leadership turn to for the hard security questions.
What you'll do
Plan and execute penetration tests and red-team exercises against web apps, mobile apps, APIs, microservices, cloud infrastructure, and internal tooling. Perform mobile application security testing (Android & iOS) — static and dynamic analysis, runtime instrumentation, SSL pinning bypass, local storage and secrets review, and reverse engineering. Discover and prove exploitability of vulnerabilities across network and application protocols (TLS, HTTP/2, gRPC, OAuth2/OIDC
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