The role
This is a founding-engineer role on a greenfield project. You will own our mobile Tap to Pay SDK end to end, from the NFC and payment architecture to the developer experience that makes it straightforward to integrate. The work spans mobile engineering, hardware and security, with real breadth and real ownership.
What you'll build
- The core SDK: NFC capture and the payment-flow architecture on Android, and iOS as the platform opens up.
- Cross-platform bindings so teams on React Native, Flutter and native can integrate cleanly.
- Compliance-grade code that meets PCI MPoC and EMVCo requirements.
- White-label customization so every partner can ship under their own brand.
- Reference and demo applications that make the SDK easy to evaluate.
- Clear, thorough developer documentation.
- Mobile test and release automation that sustains quality as we scale.
Must-haves
- Strong mobile engineering experience (Kotlin/Android or Swift/iOS), and a track record of clean, well-tested APIs.
- A genuine commitment to developer experience, from documentation to error handling.
- Comfort working at a low level: threading, I/O and platform SDKs.
- Comfortable with Git and collaborative development.
- Excellent communication and teamwork.
- Professional Czech and English.
- An ownership mentality.
Bonus
- Hands-on NFC, EMV or payments experience.
- Familiarity with PCI or EMVCo certification.
- Experience using modern AI tooling to work faster.
Conditions & benefits
- CZK 70–100k per month, based on experience.
- A founding-team ESOP allocation with a meaningful stake.
- Flexible hours, measured on output rather than time at a desk.
- A full MultiSport allowance, a learning and events budget, and the equipment you need.
- A small, senior team, a fast pace, and minimal bureaucracy.
Hiring process
- A 30-minute introductory call with a co-founder to align on the role and expectations.
- A focused practical assignment to explore how you think and work.
- An on-site meeting in Prague to review the assignment and meet the team.