Senior C++ Engineer – Mobile Payment SDK (Qt, Security, EMV)

About the role

Join the Trusted Payments team at G+D Netcetera to own and evolve the CloudPay client library, a cross‑platform C++/Qt engine embedded in banking apps for Android and iOS. You will work directly with banks, product owners and QA to ensure the SDK meets EMVCo, security and scheme requirements.

Key responsibilities

• Maintain, bug‑fix, and release security updates for the CloudPay C++/Qt library.
• Produce customer‑specific builds for Android and iOS, handling certificates, OS updates and third‑party dependencies.
• Keep the CMake and Jenkins CI pipelines healthy and automate tasks with Python.
• Support customers migrating to the next‑generation CloudPay Nova SDK.
• Maintain the Node.js sandbox used for integration testing and participate in certification and security reviews.

Required profile

• Solid professional experience with modern C++ and Qt.
• Proficiency in CMake, cross‑platform builds and cross‑compiling libraries.
• Experience with Python for tooling and automation.
• Familiarity with CI/CD pipelines, preferably Jenkins.
• Fluent English and a quality‑focused, customer‑oriented work style.

Required skills

• C++ (modern)
• Qt
• CMake
• Python
• Jenkins CI/CD
• Android NDK / iOS Xcode (optional but beneficial)
• OpenSSL, TLS/PKI
• Node.js

What we offer

• Flexibility in working hours, part‑time options and unpaid leave.
• 5 extra paid vacation days per year.
• Private health and family insurance.
• Yearly education fund for professional development.
• Daily lunch allowance, free fruit and drinks.