Cross-Platform Fintech Developer Needed

I'm in search of a skilled fintech app developer with experience in creating a payment gateway. The ideal candidate should be able to develop this for both iOS and Android platforms. The primary focus of the payment gateway will be facilitating merchant payments.

Key Responsibilities:
- Develop a robust, secure payment gateway for both iOS and Android platforms
- Ensure the payment gateway is primarily tailored for merchant payments

Ideal Skills:
- Proven experience in fintech app development
- Expertise in cross-platform app development
- Strong understanding of merchant payment systems