June 24, 2026

Senior iOS Networking Engineer

Senior • Remote

Warsaw, Poland

Location: 100 % remotely

Start: ASAP

Project Duration: 3-4 months

About the Role

We are looking for an experienced Senior iOS Developer to join an innovative cybersecurity product team building a next-generation VPN solution for the global consumer market.

You will be responsible for implementing core VPN functionality, integrating with existing backend services, and ensuring compliance with Apple's networking and security requirements.

The ideal candidate has strong expertise in Swift and SwiftUI, practical experience with VPN technologies on iOS, and a solid understanding of Apple's Network Extensions framework.

Responsibilities

  • Design and develop a native iOS application with a strong focus on VPN functionality.

  • Implement and maintain Network Extensions, including:

    • Packet Tunnel Provider

    • App Proxy Provider

    • Kill Switch functionality

    • DNS management and routing

  • Integrate the mobile application with backend services using gRPC and Protocol Buffers.

  • Work with native libraries and SDKs, including Rust-based components through FFI/bindings.

  • Build and maintain modern user interfaces using SwiftUI.

  • Collaborate closely with Backend and DevOps engineers to deliver a seamless end-to-end VPN experience.

  • Ensure application stability, performance, security, and compliance with Apple's platform requirements.

  • Participate in architecture and technical decision-making related to networking and VPN implementation.

Requirements

Must Have

  • 5+ years of professional experience in iOS development.

  • Strong proficiency in Swift and SwiftUI.

  • Hands-on experience with iOS networking and Network Extensions.

  • Familiarity with VPN SDKs such as WireGuard or similar technologies.

  • Experience working with gRPC and Protocol Buffers.

  • Experience integrating native code and libraries (C, C++, or Rust).

  • Good understanding of mobile application architecture and software engineering best practices.

  • Experience publishing and maintaining applications within Apple's ecosystem.

  • Familiarity with App Store review processes for networking and security applications.

Nice to Have

  • Experience building security, privacy, or cybersecurity-related applications.

  • Knowledge of Rust.

  • Experience with VPN, networking, encryption, or privacy-focused products.

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On-site

Iowa City, IA

🏢 Summary: Senior iOS Engineer role focused on leading engineering and product decisions while actively shipping production code for a large-scale text-to-speech iOS application. The position involves enhancing a complex app architecture, collaborating within a product team, and shaping the product roadmap in a fast-paced, fully distributed environment. Ideal for an experienced engineer passionate about user experience, scalability, and high-impact product development. 🗂️ Requirements: Proven experience building and scaling iOS applications with large user bases, Strong proficiency in Swift, Hands-on experience with SwiftUI, Experience with multithreading programming, Experience working with CI/CD infrastructure, Experience using Fastlane, Strong understanding and application of SOLID principles, Experience with Git and Git strategies, Ability to maintain and enhance complex app architectures, Experience shipping production-level iOS code 📃 Skills: Swift, SwiftUI, Multithreading, CI/CD, Fastlane, Git, SOLID, iOS 🏢 Description: Overview With the growth of our iOS app, ranked #18 in the Productivity category on the App Store and recognized with Apple’s 2025 Design Award for Inclusivity, we are looking for a Senior iOS Engineer to support our expanding user base and work on new, impactful projects. This is a key role for someone who thinks strategically, thrives in fast-paced environments, and is passionate about building outstanding user experiences. We are a flat organization where leadership is demonstrated through strong technical skills and consistent, fast delivery. Work ethic, communication skills, and a drive for excellence are essential. Our interview process includes several technical interviews and is typically completed within one week. What You'll Do - Lead key engineering and product decisions - Actively ship production code for the iOS app - Work within a dedicated product team - Participate in product discussions and shape the roadmap - Maintain and enhance a complex existing app architecture An Ideal Candidate Should Have - Experience working on products that scaled to a large user base - Track record of building products from inception to meaningful traction - Responsibility for engineering ownership of products - Strong customer focus and commitment to user experience - Product-oriented mindset and ability to guide cross-functional teams - Ability to work quickly and prioritize effectively - Strong focus and ability to work effectively in a remote, high-growth environment - Technical skills in Swift and SwiftUI Technical Requirements - Swift programming language - SwiftUI experience - Experience in multithreading programming - Experience working with CI/CD infrastructure - Experience with Fastlane - Strong understanding of SOLID principles and ability to apply them consistently - Experience with Git and understanding of Git strategies What We Offer - Fast-growing environment with opportunity to shape the product and company - Entrepreneurial team that supports risk-taking and initiative - Opportunity to make a significant impact in a transformative industry - Competitive salary, bonus, and stock options depending on experience - Collaborative and asynchronous work culture - Work on a product used by millions of people worldwide - Opportunity to contribute to the intersection of Artificial Intelligence and Audio

Technology

DataArt

Senior iOS Developer with Swift, Mobile SDK Platform

Senior

Remote

Wroclaw, Poland

14,000 - 19,000 PLN

🏢 Summary: Senior iOS Developer role focused on leading the modernization of a secure, high performance mobile SDK for fraud prevention and customer authentication in financial services. The position involves defining architecture, implementing core SDK components, and establishing standards for distribution, testing, and security across multiple iOS environments. The role requires close collaboration with cross functional teams to ensure scalability, compliance, and performance optimization. 🗂️ Requirements: 8+ years of iOS development experience, Strong proficiency in Swift, Experience with Objective C interoperability, Experience building and maintaining reusable iOS SDKs or frameworks, Knowledge of XCFramework, Swift Package Manager, and CocoaPods, Understanding of static and dynamic linking, module stability, library evolution, Experience optimizing application size and performance, Knowledge of iOS security concepts including Keychain and Secure Enclave, Experience with Instruments for performance analysis, Experience with XCTest and XCUITest, Familiarity with code signing and provisioning processes 📃 Skills: Swift, Objective-C, Combine, async/await, XCFramework, SwiftPM, CocoaPods, Keychain, SecureEnclave, AppAttest, DeviceCheck, XCTest, XCUITest, Instruments, BGTaskScheduler 🏢 Description: 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.)

Technology

Link Group

Senior iOS Engineer (Swift / Clean Architecture)

Senior

Remote

Warsaw, Poland

130 - 170 PLN

🏢 Summary: Senior iOS Engineer role focused on developing and maintaining a large-scale, business-critical mobile application with strong emphasis on architecture, scalability, and performance. The position involves owning architectural decisions, ensuring high code quality, and contributing to long-term evolution of the iOS platform. You will collaborate cross-functionally while building scalable features integrated with backend services. 🗂️ Requirements: Strong expertise in iOS SDK across multiple iOS versions and device configurations, Deep understanding of MVVM and Clean Architecture, Advanced proficiency in Swift, Experience with Xcode and Apple development ecosystem, Experience with Git version control, Experience integrating RESTful APIs, Ability to write and maintain unit tests, Understanding of UI design principles and UX best practices, Knowledge of TypeScript 📃 Skills: Swift, iOS, SDK, MVVM, CleanArchitecture, Xcode, Git, REST, JSON, UnitTesting, TypeScript, UI, UX 🏢 Description: We are looking for an experienced Senior iOS Engineer to join a large-scale mobile product environment where engineering quality, architecture ownership, and performance at scale are critical. You will work on a mature, business-critical mobile application used daily by a broad user base. The role requires a strong technical foundation, architectural awareness, and the ability to contribute to long-term evolution of the mobile platform. This is not a feature-only position - we’re looking for someone who understands system design, maintainability, and performance in complex production environments. What You’ll Be Responsible For Designing and developing scalable iOS features with long-term maintainability in mind Contributing to architectural decisions and enforcing Clean Architecture standards Ensuring high code quality, test coverage, and performance optimization Integrating with RESTful services and collaborating with backend teams Working closely with Product, Design, and other mobile engineers Supporting continuous improvement of engineering standards and development practices Must Have Strong expertise in iOS SDK , multiple iOS versions, and device configurations Deep understanding of MVVM and Clean Architecture Advanced proficiency in Swift Excellent command of Xcode and Apple development ecosystem Experience with Git version control Practical experience integrating RESTful APIs and working with JSON Ability to write and maintain unit tests Understanding of UI design principles and UX best practices Knowledge of TypeScript Strong communication skills and ability to collaborate in cross-functional teams.