lexzcq

 I’m a Senior Android Engineer and former Tech/Team Lead with 9+ years of experience building secure mobile payment systems, SoftPOS platforms, SDKs, and fintech infrastructure. My core expertise includes: • SoftPOS / Tap-to-Pay systems • EMV/APDU integrations • Payment SDK architecture • PCI DSS / MPoC security requirements • Mobile security and anti-tamper protections • Kotlin, Java, Rust, C/C++ • Android platform and infrastructure engineering • CI/CD automation and release engineering Over the past several years, I’ve worked on enterprise-grade payment solutions involving EMV kernels, ISO8583 communication, WhiteBox cryptography, issuer wallet SDKs, and secure mobile transaction flows. I’ve led cross-functional engineering teams, designed SDK architectures used by external integrators, and driven large-scale refactoring and CI/CD modernization initiatives for regulated fintech environments. Key areas of experience: • SoftPOS platforms and payment acceptance • SDK and platform architecture • Mobile security engineering • Rust-based cryptography components • Azure DevOps and release automation • Integrator-facing APIs and developer experience • Enterprise client integrations I’m currently open to fully remote Senior/Staff-level roles focused on: • Mobile platform engineering • Android infrastructure • Payment systems • Fintech SDK development • Mobile security engineering Preferred regions: EMEA / international remote.