Senior Backend Developer (Card Payment Systems)
RoofStacksIstanbul, Turkey
Posted June 27, 2025
Full Time
About the Company
RoofStacks Inc., established in 2015, is an innovative domestic software company based in Gebze, Turkey. Specializing in tourism systems, augmented reality, and e-commerce, RoofStacks offers solutions that enhance efficiency and reduce costs for its partners while strengthening their competitive positions. The company's key products include Bilet Dükkanı, a leading online ticket sales portal; GoArt, an AR-based platform introducing historical places; and Roof Games, which focuses on digital game development. With offices in multiple countries including the USA, Canada, and the Netherlands, RoofStacks aims to expand its global footprint while maintaining its commitment to innovation.
Job Description
Roofstacks is seeking a Senior .NET Developer to join their Card Payment Systems team and build innovative financial technologies that power seamless card experiences. The role involves participating in the full development lifecycle of their card platform, working on mission-critical services related to card application flows, integrations, transaction management, and secure integrations with payment schemes.
Requirements
- Minimum 5+ years of experience in software development
- Bachelor’s degree in Computer Engineering, Software Engineering, or related field
- Strong experience in C#, .NET Core / .NET Framework
- Solid command of SQL / PL-SQL (Oracle preferred)
- Experience in multi-threaded applications and performance optimization
- Prior banking or fintech experience is highly preferred
- Hands-on with RESTful API, Webhook integrations
- Strong debugging, testing, and system integration skills
- Good command of English is a plus
