Staff Mobile Engineer - Tech Lead

Flightradar24 is one of the most successful growth-stage tech companies in Stockholm. Each day, more than 5 million aviation enthusiasts visit Flightradar24 (app/website) and our Commercial services team has many of the biggest names in aviation on its customer list.

We’re looking for a seasoned Staff Mobile Engineer, Tech Lead to take ownership of our mobile technical direction across both iOS and Android.

In this role, you will act as the technical anchor for our mobile teams, driving architecture decisions, shaping our long-term strategy, and mentoring a team of 10 engineers. While your core expertise is within iOS, you bring a cross-platform mindset and are comfortable bridging the gap between iOS and Android to ensure consistency, scalability, and excellence across both platforms.

The position requires that you be able to work in Stockholm, Sweden.

What you’ll do

In this role, you will take end-to-end ownership of our mobile technical direction, shaping how we build, scale, and evolve our apps across both iOS and Android. You’ll operate at the intersection of hands-on engineering, architecture, and leadership - setting the standards for how a high-performing mobile team works.

You will play a key role in modernizing our mobile platforms, driving architectural decisions, and ensuring a consistent and scalable approach across both ecosystems. At the same time, you’ll collaborate closely with cross-functional teams to deliver seamless user experiences to millions of users worldwide.

Your responsibilities include:

• Owning the mobile technical roadmap, including architecture, engineering standards, and long-term scalability across iOS and Android
• Leading the evolution of our iOS platform while driving cross-platform alignment in architecture, patterns, and best practices
• Modernizing and refactoring our codebase into a modular, testable setup, while improving CI/CD, build performance, and release workflows
• Collaborating closely with engineering, product, design, and QA to deliver high-quality user experiences at a global scale
• Mentoring and guiding engineers, fostering a culture of technical excellence, ownership, and continuous improvement

Current tech stack

• iOS: Swift, SwiftUI, UIKit, async/await
• Android: Kotlin, Jetpack Compose
• Architecture: MVVM, Clean Architecture, modularization
• CI/CD: Fastlane, Xcode Cloud, GitLab

You are a senior mobile engineer with a strong foundation in iOS development and a genuine interest in building scalable, high-quality mobile products. To succeed in this role, you have experience from mentoring engineers, and ideally have previous experience working in a Tech Lead or similar leadership role.

You have experience working with complex systems and understand what it takes to modernize and evolve a mobile codebase over time. While iOS is your core strength, you are confident navigating cross-platform environments and contributing to alignment across iOS and Android teams.

You care deeply about code quality, testing, and developer experience, and you take pride in building maintainable, well-structured solutions and great end-user experience. At the same time, you are a collaborative and communicative team player who enjoys mentoring others and creating alignment across teams.

We believe you bring:

• Deep expertise in iOS development, including Swift, UIKit, SwiftUI, and modern concurrency
• Experience contributing to or leading architectural decisions in large-scale mobile applications
• A solid understanding of cross-platform development, with the ability to collaborate with and guide Android teams
• Strong knowledge of software design principles, testing practices, and CI/CD workflows
• A proactive mindset, with a drive to improve performance, reliability, and ways of working

We see it as a bonus if you have…

• Experience working with real-time data or high-frequency data rendering
• Knowledge of map and geospatial technologies (e.g. MapKit, Google Maps SDK)
• Experience optimizing performance for large datasets and animations on mobile
• Familiarity with background processes, location services, and push notification systems
• An interest in aviation, flight tracking, or real-time data products

Flightradar24 is the leading flight tracking and aviation data provider, leveraging the world’s largest ADS-B network. Our B2C platform serves millions, while our B2B solutions empower airlines, airports, and aviation stakeholders with essential operational insights.

All this is made possible thanks to our globally distributed network of 50,000+ radio receivers that feed real-time aircraft data into the Flightradar24 platform. Over a billion database entries are added each month, and we are processing several years of historical data totalling many terabytes. Our proprietary flight tracking data is industry-leading, and even investigative government agencies from around the world rely on it for aviation accident investigations.

Benefits of working at Flightradar24 include:

• Opportunity to impact a service with millions of end users from all around the world
• Contribute to the value which Flightradar24 creates both for B2C and B2B but also for humanity
• Modern office in the heart of beautiful downtown Stockholm, Sweden
• Being part of a diverse team
• Flexible and social work environment with free beverages, fruit, and snacks

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