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Senior IOS Developer (Ad Tech)

Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo is the #3 mobile publisher worldwide in terms of downloads after Google and Meta. Our portfolio includes chart-topping games like Mob Control and Block Jam, alongside popular apps such as BeReal and Wizz.


Team


We are seeking a visionary and talented Senior iOS Engineer to join our dynamic, passionate, and committed to excellence team at the forefront of advertising technology! The team, on a mission to build and maintain an exciting Ad network, includes two Senior Product Managers and a group of five exceptional Senior Engineers specialized in backend and mobile SDK development.

As the Technical iOS Lead, you will spearhead the development of cutting-edge SDKs, influencing the experience of millions of users across diverse devices.And as a pivotal member of our engineering team, you will not only be a technical engineer setting up the direction of our iOS development efforts but also a hands-on individual contributor.


Our Stack


⧫ Xcode ⧫ Swift ⧫ Objective-C ⧫SwiftUI ⧫ Combine ⧫ CoreData ⧫ Github ⧫ Cocoapods ⧫ CircleCI ⧫ AWS


Role
  • Technical Leadership: Assume a leadership role in guiding the technical vision for our iOS project. Drive innovation, set coding standards, and ensure the highest quality of code.
  • Code Excellence: Craft robust and high-quality code that sets industry benchmarks. As a seasoned professional, you will lead by example, demonstrating best practices in iOS development.
  • Collaborative Code Reviews: Lead and actively participate in thorough code reviews, fostering a culture of continuous improvement and knowledge sharing among the iOS development team.
  • Architectural Decisions: Make critical decisions regarding the architecture and technical stack of our iOS applications. Your expertise will be instrumental in shaping the long-term stability and scalability of our projects.
  • Quality Assurance: Guarantee the enduring quality and stability of our iOS projects. Implement best practices for testing and continuous integration to ensure top-notch performance over the long term.


Profile
  • 6/7+ years of experience in mobile software development 
  • 3 years minimum in Swift
  • Excellent problem-solving, critical thinking, and communication skills.
  • Demonstrate the ability to make critical technical decisions.
  • Extensive experience in writing robust, maintainable, and high-performance Swift code.
  • Writing efficient unit tests, integration tests, and UI tests.
  • In-depth knowledge of iOS development tools, frameworks (SwiftUI, Combine, and CoreData), and best practices (MVVM, Protocols, Delegates).
  • Excellent level of spoken English


Nice to Have
  • Previous experience in the AdTech industry or in mobile ads integration.
  • Experience with SDK development and a deep understanding of the challenges and opportunities in this space.
  • Experience in Objective-C
  • Experience in optimizing App performance, reducing memory footprint, and decreasing package size
  • Experience in deploying iOS frameworks on Cocoapods
  • Experience in deploying iOS applications with CircleCI and Fastlane
  • Working knowledge of remote APIs, concurrency, layouts, transitions, animations


Benefits
  • Competitive salary upon experience
  • Comprehensive relocation package (including visa support)
  • Swile Lunch voucher
  • Gymlib (100% borne by Voodoo)
  • Premium healthcare coverage SideCare, for your family is 100% borne by Voodoo
  • Child day care facilities (Les Petits Chaperons rouges)
  • Wellness activities in our Paris office
  • Unlimited vacation policy
  • Remote days


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CEO of Voodoo
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Alexandre Yazdi
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Average salary estimate

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$70000K
$100000K

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What You Should Know About Senior IOS Developer (Ad Tech), Voodoo

Join Voodoo as a Senior iOS Developer (Ad Tech) and be a part of a world-renowned tech company creating mobile games and apps with a mission to entertain millions! Based in the vibrant city of Paris, you'll collaborate with passionate teams focused on building an innovative advertising network. In this role, you will take on the responsibility of leading the technical direction of our iOS development projects, influencing the experiences of over 200 million active users. Voodoo's dynamic engineering team consists of top-notch professionals, and as a key member, you will not only provide technical leadership but also dive into hands-on coding. Your expertise will be critical in making architectural decisions, conducting code reviews, and ensuring the highest quality of our SDKs with an engaging stack including Swift, Objective-C, and SwiftUI. With your 6+ years of mobile software development experience, you’ll set coding standards, drive innovation, and foster a culture of learning among the team. If you're looking to combine your technical prowess with creativity and a passion for mobile technology in an exciting role, Voodoo is the perfect place for you to grow and thrive!

Frequently Asked Questions (FAQs) for Senior IOS Developer (Ad Tech) Role at Voodoo
What are the main responsibilities of a Senior iOS Developer at Voodoo?

As a Senior iOS Developer at Voodoo, your responsibilities include leading the technical vision for iOS projects, crafting high-quality and robust code, participating in code reviews, making critical architectural decisions, and ensuring quality assurance through best practices. This role not only emphasizes technical leadership but requires a hands-on contribution to the development of SDKs that influence millions of users.

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What qualifications are needed to apply for the Senior iOS Developer position at Voodoo?

To qualify for the Senior iOS Developer position at Voodoo, candidates should have at least 6-7 years of experience in mobile software development with a minimum of 3 years specifically in Swift. Additionally, excellent problem-solving abilities, communication skills, and experience with writing maintainable, high-performance code are essential. Knowledge of iOS frameworks and experience with mobile ads integration are also valuable.

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How does Voodoo support career development for Senior iOS Developers?

Voodoo fosters career development for Senior iOS Developers through a collaborative environment that encourages knowledge sharing and continuous improvement. The culture promotes technical leadership and innovation, allowing talented professionals to guide projects and shape the future of mobile apps. Moreover, the company offers various benefits including unlimited vacation days, wellness activities, and comprehensive healthcare coverage.

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What technology stack does the Senior iOS Developer at Voodoo work with?

The Senior iOS Developer at Voodoo works with a modern technology stack that includes Xcode, Swift, Objective-C, SwiftUI, Combine, and CoreData. Familiarity with tools like Github, Cocoapods, and CircleCI is essential as well, as you will be deploying iOS frameworks and applications efficiently.

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What is the company culture like for a Senior iOS Developer at Voodoo?

The culture at Voodoo for a Senior iOS Developer is vibrant and collaborative, emphasizing creativity, innovation, and technical excellence. You'll be part of a dynamic team that values hands-on contribution, continuous learning, and a passion for developing top-tier mobile experiences in the AdTech space.

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Common Interview Questions for Senior IOS Developer (Ad Tech)
Can you describe your experience with Swift and Objective-C?

In your response, detail your hands-on experience with both languages, highlighting specific projects you've worked on in Swift and any noteworthy integrations with Objective-C. Emphasize your competency in writing maintainable and high-performance code, which is crucial for a Senior iOS Developer at Voodoo.

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How do you approach code reviews?

Discuss your philosophy on code reviews, focusing on the importance of constructive feedback, best practices, and knowledge sharing among team members. Stress how you contribute to a culture of continuous improvement while ensuring code quality meets industry standards.

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What architectural patterns are you familiar with in iOS development?

Be prepared to mention architectural patterns like MVVM, MVC, and VIPER. Explain how you've implemented these patterns in your projects to ensure code scalability and maintainability, and why they're important in a large-scale app environment.

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Describe a challenging problem you faced in your iOS projects and how you solved it.

Share a specific instance where you encountered a significant challenge, elaborating on the steps you took to analyze the issue, the solutions you considered, and how you ultimately resolved it. Highlight your problem-solving skills and critical thinking.

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How do you ensure the quality of your code?

Discuss your practices for ensuring code quality, such as writing efficient unit tests, integration tests, and UI tests. Explain the tools and methodologies you use for testing and continuous integration, especially emphasizing your experience with tools like CircleCI.

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What experience do you have with mobile ad integrations?

If applicable, share any prior experience you have specifically in the AdTech space, discussing the challenges and insights you've gained while working on mobile ad integrations. Show your understanding of the nuances involved in this area.

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How do you stay updated with the latest trends in iOS development?

Talk about the resources you utilize to keep informed, such as online courses, workshops, attending conferences, reading blogs, or contributing to open-source projects. This shows your commitment to continuous learning and staying ahead in the industry.

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Can you give an example of how you improved the performance of an iOS application?

Share a concrete example where you implemented optimizations, whether by reducing the memory footprint, decreasing load times, or streamlining the codebase. Providing measurable results can demonstrate your impact effectively.

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What is your experience with deployment tools like Cocoapods and Fastlane?

Discuss your familiarity with Cocoapods for dependency management and Fastlane for automation in deployment processes. Share examples of projects where you've utilized these tools to improve workflow efficiency.

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Why do you want to work at Voodoo as a Senior iOS Developer?

Use this question to express your passion for mobile technology and game development. Highlight Voodoo's impressive portfolio and its mission, explaining how your goals align with the company’s vision and how you can contribute to its success.

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Full-time, hybrid
DATE POSTED
March 31, 2025

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