iOS Engineer - Scale up - Stockholm

About Justera Group
Justera Group AB is a leading Swedish IT consulting firm with great experience specializing in building high-performing technology teams and delivering end-to-end IT solutions. Led by dynamic female executives, Justera Group focuses on helping businesses harness the power of digital technologies to continuously evolve in today’s rapidly changing economy. The company has deep expertise in IT consultancy, software development, and recruitment services, providing clients with purpose-driven, well-trained consultants who consistently deliver efficient and effective results. Justera Group manages the entire talent lifecycle, from hiring to ongoing management, ensuring the right fit for each project on time and within budget. With their strong commitment to quality, collaboration, and client success, Justera Group is a trusted partner for technology innovation across Sweden.

About the Role:
We are looking for an experienced Senior iOS Engineer to join a dynamic and fast-growing technology environment, developing high-quality mobile experiences for a global user base.

In this role, you will take ownership of building and delivering modern iOS features using Swift, SwiftUI and UIKit. You will work on complex, data-driven applications with a strong focus on performance, scalability, reliability and user experience.

You will play an important role in shaping the iOS architecture, contributing to technical decisions and collaborating closely with cross-functional teams to deliver seamless mobile experiences.

Key Responsibilities:

• Design, develop and deliver user-facing iOS features using Swift, SwiftUI and UIKit.

• Apply modern concurrency principles, including async/await and structured concurrency, to build responsive and reliable applications.

• Translate complex technical and product requirements into robust, scalable solutions, working with real-time data, map interactions and push notifications.

• Contribute to architectural decisions, including MVVM, modularisation and dependency injection, helping evolve the codebase towards a modern, Swift-first architecture.

• Develop and maintain comprehensive unit, snapshot and UI tests to ensure high standards of code quality.

• Participate in code reviews and pair programming, promoting engineering best practices and knowledge sharing.

• Collaborate closely with Android engineers, designers, backend developers, QA and product teams to deliver consistent cross-platform experiences.

• Maintain and improve CI/CD processes using tools such as Fastlane and Xcode Cloud.

• Mentor other engineers and contribute to technical documentation, architecture proposals and knowledge-sharing sessions.

Requirements:

• 5–8 years of professional iOS development experience, with a proven track record of delivering high-quality consumer applications at scale.

• Expert-level knowledge of Swift and strong hands-on experience with both SwiftUI and UIKit.

• Solid understanding of modern iOS concurrency, including async/await, structured concurrency and actors.

• Strong knowledge of software architecture patterns such as MVVM, Clean Architecture and Coordinator.

• Experience with modular application architectures and dependency injection.

• Practical experience writing unit tests, snapshot tests and UI tests using XCTest and related frameworks.

• Experience with CI/CD tools and mobile release processes.

• Strong understanding of application performance optimisation, including CPU, memory and rendering analysis using Instruments.

• Excellent communication and collaboration skills, with the ability to provide constructive feedback and support other engineers.
  

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  write the job description in a polished way without mentioning the client detaisl iOS Engineer - Scale up - Stockholm Software Development Technology industry #327248 Start date: ASAP Duration: 7-9 months Language: English/Full professional Seniority: Senior We are looking for a Senior iOS Engineer who will write modern Swift, ship to a global audience, and help shape one of the world's most iconic real-time apps. Start: ASAP, December or January Duration: 6 months initial Location: 4 days per week in the office in Stockholm What you'll do Design and ship user-facing features in Swift using SwiftUI and UIKit, with async/await for modern concurrency. Translate complex requirements, real-time data, map interactions, push alerts, into reliable, performant code. Contribute to architecture discussions (MVVM, modularization, dependency injection) and help drive the codebase toward a Swift-first, modular future. Write thorough unit, snapshot, and UI tests; raise the bar for quality through code reviews and pair programming. Collaborate daily with Android engineers, designers, backend engineers, QA, and product to deliver cohesive cross-platform experiences. Maintain and improve our CI/CD pipeline (Fastlane, Xcode Cloud) to keep releases fast, predictable, and safe. Mentor mid-level engineers and share knowledge through RFCs, tech talks, and documentation. Who you are 5–8 years of iOS experience with a track record of shipping high-quality, high-traffic consumer apps. Expert in Swift; deeply comfortable with both SwiftUI and UIKit and the trade-offs between them. Solid grasp of modern concurrency (async/await, structured concurrency, actors). Fluent in app architecture patterns (MVVM, Clean Architecture, Coordinator) and dependency injection. Strong testing instincts and hands-on with XCTest, snapshot testing, and CI/CD tooling. Performance-minded: comfortable in Instruments profiling CPU, memory, and rendering. Clear communicator who gives and receives feedback well and lifts the people around you. Bonus Real-time data on mobile (live feeds, websockets, high-frequency UI updates). MapKit or third-party map SDKs and custom map-layer performance tuning. Background modes, Core Location, push notifications, and Live Activities. StoreKit 2, App Store optimization, or experimentation frameworks.

  Writing

  Senior iOS Engineer

  Location: Stockholm, Sweden
  Industry: Technology
  Seniority: Senior
  Start Date: ASAP (December/January)
  Duration: 6–9 months
  Working Arrangement: 4 days per week in the office
  Language: English (Full professional proficiency)

  About the Role

  We are looking for an experienced Senior iOS Engineer to join a dynamic and fast-growing technology environment, developing high-quality mobile experiences for a global user base.

  In this role, you will take ownership of building and delivering modern iOS features using Swift, SwiftUI and UIKit. You will work on complex, data-driven applications with a strong focus on performance, scalability, reliability and user experience.

  You will play an important role in shaping the iOS architecture, contributing to technical decisions and collaborating closely with cross-functional teams to deliver seamless mobile experiences.

  Key Responsibilities

  • Design, develop and deliver user-facing iOS features using Swift, SwiftUI and UIKit.

  • Apply modern concurrency principles, including async/await and structured concurrency, to build responsive and reliable applications.

  • Translate complex technical and product requirements into robust, scalable solutions, working with real-time data, map interactions and push notifications.

  • Contribute to architectural decisions, including MVVM, modularisation and dependency injection, helping evolve the codebase towards a modern, Swift-first architecture.

  • Develop and maintain comprehensive unit, snapshot and UI tests to ensure high standards of code quality.

  • Participate in code reviews and pair programming, promoting engineering best practices and knowledge sharing.

  • Collaborate closely with Android engineers, designers, backend developers, QA and product teams to deliver consistent cross-platform experiences.

  • Maintain and improve CI/CD processes using tools such as Fastlane and Xcode Cloud.

  • Mentor other engineers and contribute to technical documentation, architecture proposals and knowledge-sharing sessions.

  Required Experience & Skills

  • 5–8 years of professional iOS development experience, with a proven track record of delivering high-quality consumer applications at scale.

  • Expert-level knowledge of Swift and strong hands-on experience with both SwiftUI and UIKit.

  • Solid understanding of modern iOS concurrency, including async/await, structured concurrency and actors.

  • Strong knowledge of software architecture patterns such as MVVM, Clean Architecture and Coordinator.

  • Experience with modular application architectures and dependency injection.

  • Practical experience writing unit tests, snapshot tests and UI tests using XCTest and related frameworks.

  • Experience with CI/CD tools and mobile release processes.

  • Strong understanding of application performance optimisation, including CPU, memory and rendering analysis using Instruments.

  • Excellent communication and collaboration skills, with the ability to provide constructive feedback and support other engineers.

  Nice to Have

  • Experience working with real-time data on mobile applications, including live feeds, WebSockets and high-frequency UI updates.

  • Experience with MapKit or third-party mapping SDKs, including custom map layers and map performance optimisation.

  • Knowledge of iOS background modes, Core Location, push notifications and Live Activities.

  • Experience with StoreKit 2, App Store optimisation or mobile experimentation frameworks.

What We Offer:

• A dynamic and innovative workplace driving advancements in cutting-edge robotic technologies

• The opportunity to collaborate with talented cross-functional teams on meaningful and impactful projects

• Competitive compensation and comprehensive benefits package

• A supportive culture that fosters continuous learning, growth, and professional development

• Flexible hybrid working model for an optimal work-life balance

• 25 days of annual leave to recharge and relax

• An annual wellness allowance of 3,500 SEK to support your health and wellbeing