Senior iOS Engineer (SwiftUI / KMP)

Qualco Group; Kentucky; On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Competitive compensation

Ticket restaurant card

Annual bonus programs

Private health insurance

Onsite medical doctor

Job summary

Quento Technologies S.A. — the ICT arm of the Qualco Group — seeks a Senior iOS Engineer to own and evolve our iOS app, built with SwiftUI and a shared Kotlin Multiplatform logic layer.

Collaborate with backend teams to deliver scalable mobile features, integrate with the PowerCore SDK, and ensure GDPR compliance across the product stack. You will work on authentication, analytics, push messaging, and secure token handling, while contributing to CI/CD, testing, and cross-platform

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field.
• Proficiency in Swift and iOS app development using SwiftUI and MVVM.
• Strong knowledge of Swift Concurrency (async/await).
• Experience implementing authentication with MSAL and OAuth 2.0/OpenID Connect.
• Hands-on with Firebase iOS SDK including Analytics, Crashlytics, and Cloud Messaging with APNs.
• Knowledge of secure token storage using the iOS Keychain.
• Experience with Xcode, Instruments, debugging tools, and Swift Package Manager.
• Experience with WKWebView for embedded web flows.
• Experience writing unit/UI tests with XCTest/XCUITest.
• Experience integrating Kotlin Multiplatform modules into iOS apps (Touchlab SKIE).
• Experience working in an Agile environment.

Responsibilities

• Own, develop, and maintain the iOS application using SwiftUI.
• Build and maintain features using SwiftUI with MVVM architecture and Swift Concurrency.
• Integrate and consume backend microservices via the shared KMP PowerCore SDK.
• Debug and optimize cross-platform interactions between Swift and Kotlin layers.
• Implement authentication flows using MSAL and OAuth 2.0/OpenID Connect.
• Manage Firebase on iOS including Analytics, Crashlytics, and Cloud Messaging with APNs.
• Integrate the shared KMP SDK using Touchlab SKIE.
• Write and maintain unit tests and UI tests.
• Ensure GDPR compliance by maintaining consent management integrations such as OneTrust.
• Develop and maintain WebView-based flows including payments and identity verification.
• Contribute to build, release, and CI/CD processes in Azure DevOps, including App Store distribution.
• Ensure compliance with regulatory requirements and anti-bribery/corruption policy.

Skills

Swift

SwiftUI

MVVM

Swift Concurrency

MSAL/OAuth 2.0/OpenID

Firebase iOS SDK

Keychain security

Xcode

Instruments

Debugging tools

Swift Package Manager

WKWebView

XCTest/XCUITest

Kotlin Multiplatform (Touchlab SKIE)

Agile

Kotlin/Multiplatform

OneTrust

Consent management

Azure DevOps

App Store signing & distribution

Education

Bachelor's degree in Computer Science, Engineering, or related field

Tools

Firebase iOS SDK

Touchlab SKIE

Azure DevOps

WKWebView

Job description

At Quento Technologies S.A., the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.

At Quento Technologies S.A. we empower our people to innovate and lead in delivering transformative ICT solutions to our clients worldwide. Quento Technologies S.A. seeks a highly motivated and experienced Senior iOS Engineer to take ownership of our iOS application, building modern native experiences powered by a shared Kotlin Multiplatform (KMP) business logic layer.

In this role, you will work closely with backend and platform teams to deliver high-quality, scalable mobile features while integrating with our shared PowerCore SDK, enabling consistency across both iOS and Android platforms.

Your responsibilities will entail:

• Own, develop, and maintain the iOS application using SwiftUI;
• Build and maintain features using SwiftUI with MVVM architecture and Swift Concurrency (async/await);
• Integrate and consume backend microservices via the shared KMP PowerCore SDK;
• Debug and optimize cross-platform interactions between Swift and Kotlin layers;
• Implement authentication flows using MSAL and Azure Entra External ID based on OAuth 2.0 and OIDC;
• Manage Firebase on iOS including Analytics, Crashlytics, and Cloud Messaging with proper APNs configuration;
• Integrate the shared KMP SDK using Touchlab SKIE for Swift/Kotlin interoperability;
• Write and maintain unit tests and UI tests;
• Ensure GDPR compliance by maintaining consent management integrations such as OneTrust;
• Develop and maintain WebView-based flows including payments and identity verification with secure token injection;
• Contribute to build, release, and CI/CD processes in Azure DevOps, including App Store distribution;
• Ensuring that all activities and duties are carried out in full compliance with regulatory requirements and supporting the continued implementation of the Group Anti-Bribery and Corruption Policy.

• University degree in Computer Science, Engineering, or a related field;
• Strong proficiency in Swift;
• Experience building iOS applications using SwiftUI and MVVM architecture;
• Solid understanding of Swift Concurrency (async/await);
• Experience implementing authentication using MSAL and OAuth 2.0 / OpenID Connect;
• Hands‑on experience with Firebase iOS SDK including Analytics, Crashlytics, and Cloud Messaging with APNs setup;
• Knowledge of secure token storage using the iOS Keychain;
• Experience with Xcode, Instruments, debugging tools, and dependency management using Swift Package Manager;
• Experience working with WKWebView for embedded web flows;
• Experience writing unit and UI tests using XCTest and XCUITest;
• Experience integrating Kotlin Multiplatform modules into iOS applications using tools such as Touchlab SKIE;
• Experience working in an Agile environment;

Nice to Have

• Familiarity with Kotlin and Kotlin Multiplatform (KMP) concepts;
• Experience with consent management platforms such as OneTrust;
• Experience working with cross-platform mobile architectures or shared SDKs;
• Knowledge of CI/CD pipelines for iOS in Azure DevOps;
• Experience managing App Store builds, signing, and distribution;
• Familiarity with Azure DevOps.

Your Life @ QualcoGroup

On top of challenging work environment, we are offering:

• Competitive compensation, ticket restaurant card, and annual bonus programs
• Cutting-edge IT equipment, mobile and data plan
• Modern facilities, free coffee and beverages, indoor parking, and company bus
• Private health insurance, onsite occupational doctor, and workplace counselor
• Flexible working model, hybrid benefits & home equipment benefits
• Onsite gym, wellness facilities, and ping pong room
• Career and talent development tools
• Mentoring, coaching, personalized annual learning and development plan
• Employee referral bonus, regular wellbeing, ESG and volunteering activities

Your race, gender identity and expression, age ethnicity or disability make no difference in Quento Technologies S.A. We want to attract, develop, promote, and retain the best people based only on their ability and behavior.

Disclaimer: Quento Technologies S.A. collects and processes personal data in accordance with the EU General Data Protection Regulation (GDPR). We are bound to use the information provided within your job application for recruitment purposes only and not to share these with any third parties. For more details on the processing of your personal data during the Recruitment procedure, please be informed in Recruitment Notice, before the submission of your application.