Senior iOS Engineer

About us

Wallester is a cutting-edge financial technology company that specializes in providing innovative solutions for businesses seeking to modernize their payment systems. By offering white-label card issuance platforms, seamless integration with existing infrastructure, and comprehensive support for both digital and physical cards, Wallester empowers companies to enhance their financial services and customer experience. Recognized as a leader in the FinTech space, Wallester has earned a reputation for its state-of-the-art technology, security, and scalability. Whether you are a startup or an established enterprise, Wallester delivers flexible, reliable solutions tailored to meet the evolving needs of the digital economy.

About the role

As a Senior iOS Engineer at Wallester, you will play a crucial role in developing and maintaining our White-Label iOS applications, empowering our clients to launch customized mobile solutions efficiently. You will actively participate in the entire mobile development lifecycle, including planning, design, development, testing, deployment, and ongoing maintenance.This role provides an excellent opportunity to work with modern iOS technologies, collaborate with a talented team of professionals, and contribute to building user-friendly, scalable, and high-performance mobile applications.If you're passionate about mobile development, have a strong background in iOS engineering, and enjoy tackling challenges in a fast-paced, collaborative environment, this role is for you!

Technology stack

Swift

SwiftUI

Combine

Structured

Concurrency (async/await)

Kotlin Multiplatform Mobile (optional)

Clean Architecture

Unit Testing (TDD)

XCTest, Snapshot testing

Responsibilities

• Be part of the entire mobile application development life cycle, from planning to deployment;
• Design, implement, and maintain a modular, scalable architecture for the iOS platform;
• Collaborate closely with Product Managers, Designers, and other Engineers to create high-quality features;
• Publish and manage builds via TestFlight;Integrate and optimize web-based solutions into native applications;
• Actively contribute to adopting and improving best practices in Software Engineering, including TDD and CI/CD processes;
• Continuously analyze and improve application performance, ensuring compatibility across iOS versions.

Requirements

• 5+ years of experience in iOS development;
• Strong knowledge of Swift and Combine;
• Deep understanding of multi-threading and structured concurrency (async/await);
• Understanding the differences and limitations of each iOS version and the ability to adapt solutions accordingly;
• Strong knowledge of iOS architectural patterns and system design principles;
• Solid understanding of the iOS application lifecycle and design principles;
• Familiarity with UI/UX standards of modern applications;
• Experience in creating modular applications and maintaining clean, scalable architecture;
• Knowledge of the full mobile development life cycle, OOP principles, and design patterns;
• Hands-on experience in publishing builds to TestFlight;
• Experience with CI/CD pipelines for mobile development;
• Passion for high-quality code, clean architecture, and continuous learning.

Nice to have

• Experience with SwiftUI;
• Experience with Kotlin Multiplatform Mobile (KMP);
• Background in fintech projects.

Company offers:

• Competitive salary
• Career opportunities
• Supportive and caring Leadership
• A modern office in the center of Tallinn
• A chance to work as part of a highly motivated and talented team
• Referral program
• Stebby
• Team building and Company Events
• Free parking