Mobile Developer (iOS & Android)

About the Job

Company Description

OBSS is Turkey’s largest technology consultancy, pioneering product development and technology consulting for an AI-native future. With more than 20 years of experience and offices in Istanbul, Ankara, London, Amsterdam, and Baku, we empower leading companies in banking and finance, insurance, e-commerce, retail, and the start-up ecosystem. Our team of over 1000 talented professionals thrives on collaboration, innovation, and continuous learning. We are now looking for a Mobile Developer to join us and contribute to building high-quality, end-to-end solutions that create real business impact.

OBSS is looking for a Mobile Developer to join our dynamic team and contribute to delivering end-to-end software solutions across diverse industries. You will work on cutting-edge projects, collaborating with cross-functional teams to design, develop, and maintain high-quality applications that solve real business problems.

Main Responsibilities

• Design, develop, test, and maintain high-quality mobile applications for both iOS and Android.
• Collaborate with UX/UI designers, backend developers, business analysts, and product managers to deliver innovative and user-friendly mobile solutions.
• Architect scalable, reusable, and maintainable codebases following clean code principles.
• Integrate APIs, third-party libraries, and SDKs effectively.
• Optimize app performance, responsiveness, and battery efficiency.
• Implement and maintain automated testing to ensure application stability.
• Participate in Agile/Scrum ceremonies, including sprint planning, stand-ups, and retrospectives.
• Conduct code reviews and contribute to improving development standards and practices.
• Stay updated with emerging mobile technologies and trends, and apply them where appropriate.
• Troubleshoot and resolve issues to maintain a seamless user experience.

Qualifications / Technical Skills

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.
• Minimum 7 years of professional experience developing native mobile applications for both iOS and Android.
• Strong proficiency in Swift (iOS) and Kotlin/Java (Android).
• Solid understanding of platform SDKs ( iOS SDK, Android SDK, Jetpack components ) and development tools ( Xcode, Android Studio ).
• Experience with modern architectural patterns such as MVVM, MVP, MVI, VIPER, Clean Architecture .
• Familiarity with UI frameworks : UIKit, SwiftUI, Combine (iOS); Material Design, Jetpack Compose, Coroutines, Flow (Android).
• Experience with networking and APIs (RESTful APIs, JSON, Alamofire, Retrofit) and local databases (Core Data, SQLite, Room, Realm).
• Knowledge of unit testing and UI testing frameworks (e.g., XCTest, JUnit, Espresso).
• Understanding of good UI/UX principles and ability to implement pixel-perfect designs.
• Proficiency with Git and experience with CI/CD tools (e.g., Jenkins, GitHub Actions).
• Strong problem-solving, analytical thinking, and attention to detail.
• Excellent communication skills and ability to work in Agile/Scrum environments.
• Published apps on the App Store and/or Google Play or contributions to open-source projects.

Additional Informations

Professional Growth & Learning

As a tech company, we focus on reskilling and upskilling to support career growth. We offer a personalized Individual Growth Program (IGP), where employees set clear goals for each half of the year. These goals may include trainings, certifications, and personal development milestones, creating a structured roadmap for continuous improvement. The IGP helps employees strengthen both technical and soft skills, ensuring steady professional advancement.

Company Culture and Values

We celebrate diversity, inclusion, and equal opportunity, fostering a collaborative environment where innovation can flourish. Our culture emphasizes mentorship, knowledge sharing, and active participation in tech communities, workshops, and team events. This vibrant atmosphere empowers employees to contribute their best while feeling supported and valued.

Benefits and Perks

We provide competitive salaries, flexible and hybrid working arrangements, and a wide range of opportunities for growth through training programs, certifications, and workshops. In addition, we offer initiatives designed to build a supportive and engaging workplace where curiosity and collaboration are encouraged. These benefits ensure that employees feel motivated, empowered, and equipped to reach their full potential.