Fabian is an experienced software engineer with expertise in development, tech leadership, and solution architecture, specialising in scalable, efficient, and secure software solutions.
Category: Members
Di (Leo) Yang
Leo collaborates with multiple teams—mainly focused on SDK and related services—integrating operations, development, QA, and security to provide quick, secure solutions. He’s a seasoned full-stack developer with a focus on backend and adept at creating secure, scalable, and maintainable systems.
David Irish
David, a Senior Software Engineer, skilled in cloud integration, solution delivery and C#/.NET backend services, with knowledge of Linux, networking and security. On the Payments and Switch Team, he helps build a secure global platform and has tripled the throughput of a core service.
Dalgis Diaz-Leon
Dalgis heads the Payments & Switch Team, driving backend development and host integrations. Coming from Fintech leader NMI, she uses her expertise in EMV tech and card schemes to develop competitive products and ensure smooth customer transitions to the MPoC platform.
Konrad Olczak
Konrad is vital to developing and maintaining our mobile payment apps. As a Senior Android Developer, he works with the Customer Innovation team to provide top-notch, secure payment solutions. He added Dspread support for the Goodfellow project.
Tayo Akinfenwa
Tayo heads our technical consulting services, focusing on product innovation, PCI-DSS compliance, and data-driven white-label apps. He brings 18+ years’ expertise in electronic/card payments, including design, development, integration, consultancy, implementation & testing.
Sean Carmichael
Sean is one of our most experienced engineers, having progressed from Senior to Principal Engineer. On the Payments & Switch team, his expertise in designing, scaling, and maintaining services has been key in developing critical components, including our latest APIs and attestation service.
Scott MacKenzie
Scott, a Senior DevOps Engineer, excels in Azure, Pulumi, and Kubernetes. On the Cloud Infrastructure team, he has improved the performance, scalability and reliability of our new/existing platforms, and ensures daily operations comply with policies, procedures, ITIL, and quality standards.
Phuc Vinh Nguyen
Phuc, an experienced backend developer in the Customer Innovation team, possesses extensive expertise in C, C++, Python, and Powershell. He’s skilled in ASP.NET Core, jPOS, ISO8583, EMV, HSM, and RESTful APIs, and played a key role in the keyblock migration project for Spstack.
Peter Posypanka
Peter, is a Java Developer in the Payments and Switch team. He designs system architectures to meet customer and internal requirements, bridges MPP solutions with clients, and develops shared functionalities to improve quality. He continually seeks ways to enhance performance.