Location: United Arab Emirates (Remote possible) Contract Type: 3-Month Contract (Extendable) Industry: Railway / Transportation / Mobility Start Date: Immediate Project Overview We are supporting a strategic railway project in the UAE focused on the development and enhancement of a digital ticketing system . We are seeking a Senior Software Developer with strong expertise in modern web and mobile technologies to contribute to frontend/backend development authentication integration payment gateway implementation and GIS-based functionalities. This is a 3-month contract with strong potential for extension based on project requirements. Key Responsibilities Web Development • Develop and maintain web applications using React / • Build scalable applications using TypeScript 5 • Implement containerized environments using Docker / Docker Compose • Develop and maintain unit testing using Jest • Ensure high performance security and maintainability Authentication & Security • Implement authentication solutions using Keycloak • Integrate OIDC (OpenID Connect) protocols • Ensure secure identity and access management Payment Gateway Integration • Integrate and manage MPGS (Mastercard Payment Gateway Services) • Ensure secure transaction processing and payment validation • Support testing and troubleshooting of payment flows GIS & Geocoding • Implement map-based features using: • Mapbox • OpenStreetMap • Manage geolocation and geocoding functionalities Mobile Application Development • Develop cross-platform mobile applications using Flutter / Dart • Deliver iOS and Android applications • Manage CI/CD pipelines using EAS Build • Ensure performance optimization and release readiness Qualifications : Mandatory Skills • Strong hands-on experience with: • React / • TypeScript (v5 preferred) • Docker / Docker Compose • Jest • Keycloak / OIDC • MPGS payment gateway • Mapbox or OpenStreetMap • Flutter / Dart • CI/CD pipelines (EAS Build) Preferred • Experience in Railway / Transportation / Ticketing systems • Experience in secure payment platforms • Agile/Scrum experience Additional Information : • Senior Software Developer (minimum 5 years experience) • Proven delivery of production-grade web & mobile applications • Strong understanding of scalable architecture • Ability to work independently • Based in UAE (remote work possible) • Immediate or short notice preferred Please note that only shortlisted candidates will be contacted Remote Work : No Employment Type : Contract