iOS Developer

Jit Team is a Polish company that provides IT consulting services and develops innovative software solutions for clients worldwide. The client is a leading e-commerce platform in Poland with over 20 million users, focusing on large-scale technology development and micro-services architecture.

• Implement new advertising formats, including video, display, and native ads, directly within the main application;
• Optimize video ad playback to ensure smooth transitions and correct tracking event triggering;
• Collaborate with Core Mobile teams to maintain consistency with app architecture, security, and performance standards;
• Implement and maintain data privacy solutions, such as GDPR consent management;
• Analyze and resolve complex issues at the interface between native code, external advertising SDKs, and web creatives;
• Participate in the design of solutions requiring communication between the mobile app and advertising systems.

• Over 5 years of commercial experience in native iOS development using Swift;
• In-depth understanding of mobile architecture patterns like MVVM, MVI, and Clean Architecture;
• Practical experience with WebKit and WKWebView, including native-to-web communication;
• Solid knowledge of JavaScript, HTML, and CSS for integrating and debugging web-based advertising content;
• Experience with RESTful APIs, asynchronous programming, and efficient data processing;
• Proficiency in writing unit and integration tests;
• Knowledge of version control systems like Git;
• Strong understanding of software engineering principles, data structures, and algorithms;
• Proactive problem-solving approach and passion for UX;
• Nice to have: Experience with large-scale high-traffic apps, knowledge of reactive programming (RxJava/RxKotlin, Combine), experience with Jetpack Compose and coroutines, experience with A/B testing frameworks, contributions to open-source projects.

• 1000 - 1200 PLN/day;
• Impact on the development of the largest e-commerce system in Poland;
• Flexible work organization;
• Long-term cooperation within a stable ecosystem;
• Regular integration meetings with the Jit community.