Senior iOS Developer with Swift, Mobile SDK Platform

Project overview

The project focuses on modernizing a mobile SDK used for digital fraud prevention and customer authentication in financial services. You will contribute to building a scalable, secure, and high performance SDK designed for integration into external applications across multiple environments.

Team

You will work in a distributed team of iOS engineers, backend engineers, and security specialists. The team collaborates closely across regions, following shared engineering standards and participating in design reviews and system level discussions.

Position overview

We are looking for a Senior iOS Developer who can lead technical design and implementation for an iOS SDK modernization initiative. You will define architecture, validate migration strategies, develop proof of concept components, and establish engineering standards for distribution, testing, and security.

Technology stack

Swift, Objective C, Combine, async await, XCFramework, Swift Package Manager, CocoaPods, Keychain, Secure Enclave, App Attest, DeviceCheck, XCTest, XCUITest, Instruments, BGTaskScheduler

Responsibilities

• Lead technical design and implementation of iOS SDK components

• Define and maintain architecture aligned with enterprise standards

• Develop proof of concept solutions to validate design approaches

• Ensure SDK compatibility across multiple iOS versions and devices

• Establish guidelines for SDK distribution, integration, and versioning

• Collaborate with cross functional teams on security and compliance requirements

• Optimize application performance, memory usage, and energy efficiency

• Implement secure coding practices and support data protection mechanisms

• Drive testing strategies including unit, integration, and UI testing

• Contribute to code reviews and support engineering best practices

Requirements

• 8+ years of experience in iOS development

• Strong proficiency in Swift and experience with Objective C interoperability

• Experience building and maintaining reusable iOS SDKs or frameworks

• Understanding of framework distribution using XCFramework, Swift Package Manager, and CocoaPods

• Knowledge of static and dynamic linking, module stability, and library evolution

• Experience managing dependencies and optimizing application size and performance

• Understanding of iOS security concepts including Keychain, Secure Enclave, and certificate pinning

• Familiarity with privacy and App Store compliance standards

• Experience with background execution models and related constraints in iOS

• Knowledge of performance analysis tools such as Instruments

• Experience with testing frameworks including XCTest and XCUITest

• Familiarity with code signing, provisioning, and distribution processes

Nice to have

• Experience working in financial services or regulated environments

• Exposure to sensor data processing such as CoreMotion or gesture handling

• Experience contributing to enterprise architecture standards

• Background in security focused application development

What We Offer:

• Vacation days: Up to 26 business days per year.

• 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types

• Health and life insurance (Luxmed)

• MyBenefit platform with Multisport option

• Internal psychological support service

• English language classes from the first working day

• Access to external learning platforms: O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training

• Flexible workplace: work from the office, from home, or choose a hybrid option

• Tech Skills Mentoring Program

• Opportunities to develop as a public speaker, mentor, or technical interviewer

• Fully paid idle (bench) when not involved in a project

• Certification reimbursement (AWS, GCP, Microsoft, etc.)