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- Tasks: Lead the development of mobile SDKs for iOS and Android, focusing on performance and integration.
- Company: Crowd Connected is revolutionising location intelligence with cutting-edge technology for mobile apps.
- Benefits: Enjoy flexible remote work options, a budget for learning, and local perks.
- Why this job: Join a dynamic scale-up where your work directly impacts real-time tracking and user experiences.
- Qualifications: Experience in mobile engineering, particularly with iOS and Android SDKs; strong problem-solving skills required.
- Other info: Be part of a culture that values collaboration, honesty, innovation, learning, and excellence.
The predicted salary is between 43200 - 72000 ÂŁ per year.
At Crowd Connected, we’re building the next generation of location intelligence. Our technology powers real-time tracking and insight for mobile apps, helping businesses better understand how people move through physical spaces—whether at a global music festival, inside a smart building, or across a university campus. We combine advanced indoor positioning, IoT, and machine learning to deliver solutions used by some of the world’s best-known brands and events. Our mobile SDKs for iOS and Android are core to our work, enabling location-aware experiences at scale—with over 10,000 new downloads of apps containing our code every day. As a growing scale-up, we operate with the agility and flexibility of a startup, backed by a strong foundation of proven products and deployments. We value autonomy, deep technical thinking, and motivated individuals who want to make a tangible impact.
The Role: Senior Mobile SDK Engineer
We’re looking for an experienced Senior Mobile Engineer to join our team and take ownership of our cross-platform mobile SDKs as we scale our technology and customer base in 2025 and beyond. You’ll be key in evolving our iOS and Android SDKs—built around CoreLocation, CoreBluetooth, and CoreMotion—working close to the metal to design and refine performant, reliable SDK components that integrate seamlessly with our customers’ apps. This role focuses on low-level problem solving, performance, and developer experience, rather than UI development. You’ll have autonomy in architecture decisions, contribute to product strategy, and support our developer community by ensuring smooth integration and documentation. If you’re a hands-on mobile engineer who enjoys focused, self-directed work and wants to build impactful technology—let’s talk.
Key Responsibilities:
- Lead SDK Development: Optimize sensor performance, data handling, and network communication across Swift (iOS), Kotlin/Java (Android), and C (core engine).
- Own iOS Expertise: Be the go-to for iOS development, ensuring SDK scalability, performance, and ease of integration aligned with developer needs.
- Manage SDK Lifecycle: Oversee design, development, testing, and distribution via Carthage, CocoaPods, Swift Package Manager, and Gradle.
- Ensure Quality & Stability: Use debugging and testing skills to maintain reliable SDKs, following best practices for production readiness.
- Support Developers: Assist app developers with SDK integration, issue resolution, and onboarding.
- Maintain Documentation: Write and update developer documentation for smooth integration.
- Shape Roadmap & Strategy: Propose and prioritize new features based on feedback and technical insights.
- Maintain Supporting Apps: Update demo, admin, and test apps to reflect SDK capabilities.
- Develop New Tools: Create new apps for testing, demos, or admin purposes to support SDK development.
Nice to haves:
- Android experience and willingness to learn Android development.
- Knowledge of Kotlin Multiplatform, Bluetooth Low Energy, iBeacons, C, memory management, profiling, performance optimization, and cross-platform frameworks like React Native.
- Flexible remote working options, budget for learning and development, and local benefits.
Core Values - CHILE: Collaboration, Honesty, Innovation, Learning, and Excellence—values that guide our work and culture.
Senior Mobile SDK Engineer - Lead Level - (iOS/Android) employer: JR United Kingdom
Contact Detail:
JR United Kingdom Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Mobile SDK Engineer - Lead Level - (iOS/Android)
✨Tip Number 1
Familiarise yourself with the latest trends in mobile SDK development, particularly focusing on CoreLocation, CoreBluetooth, and CoreMotion. This knowledge will not only help you understand the technical requirements of the role but also demonstrate your commitment to staying updated in a rapidly evolving field.
✨Tip Number 2
Engage with the developer community by contributing to forums or open-source projects related to mobile SDKs. This will showcase your expertise and passion for mobile engineering, making you a more attractive candidate for the position.
✨Tip Number 3
Prepare to discuss your experience with performance optimisation and debugging in mobile applications. Be ready to share specific examples of how you've improved SDK performance or resolved complex issues in past projects.
✨Tip Number 4
Research Crowd Connected's existing products and their applications in real-world scenarios. Understanding their technology and how it integrates into various industries will allow you to tailor your conversation during interviews and show that you're genuinely interested in their mission.
We think you need these skills to ace Senior Mobile SDK Engineer - Lead Level - (iOS/Android)
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights relevant experience in mobile SDK development, particularly with iOS and Android. Emphasise your expertise in CoreLocation, CoreBluetooth, and CoreMotion, as well as any experience with performance optimisation and debugging.
Craft a Compelling Cover Letter: Write a cover letter that showcases your passion for mobile engineering and your understanding of Crowd Connected's mission. Mention specific projects or experiences that demonstrate your ability to lead SDK development and support developers effectively.
Showcase Technical Skills: In your application, include specific examples of your technical skills, such as your proficiency in Swift, Kotlin/Java, and C. Highlight any experience you have with tools like Carthage, CocoaPods, and Gradle, as well as your approach to maintaining quality and stability in SDKs.
Demonstrate Cultural Fit: Familiarise yourself with Crowd Connected's core values: Collaboration, Honesty, Innovation, Learning, and Excellence. In your application, reflect on how your personal values align with theirs and provide examples of how you've embodied these values in your previous work.
How to prepare for a job interview at JR United Kingdom
✨Showcase Your Technical Expertise
Be prepared to discuss your experience with mobile SDK development, particularly in iOS and Android. Highlight specific projects where you've optimised performance or solved low-level problems, as this role requires deep technical knowledge.
✨Demonstrate Problem-Solving Skills
Expect technical questions that assess your ability to troubleshoot and resolve issues. Prepare examples of challenges you've faced in previous roles and how you approached them, especially related to SDK integration and performance.
✨Familiarise Yourself with Their Technology
Research Crowd Connected's products and technology stack, including CoreLocation, CoreBluetooth, and CoreMotion. Understanding their solutions will help you align your answers with their needs and show genuine interest in the company.
✨Emphasise Collaboration and Communication
Since the role involves supporting developers and maintaining documentation, be ready to discuss your experience in collaborating with teams and communicating complex technical concepts clearly. This aligns with their core values of collaboration and honesty.
