Senior Mobile Engineer (iOS or Android) - VC Backed Startups

At SignalFire, we partner with top early-stage startups that are shaping the future of technology. Our portfolio spans 200+ innovative companies across AI, cybersecurity, healthtech, fintech, developer tools, and enterprise SaaS.

We’re looking to connect with exceptional Senior Mobile Engineers who are excited about building and scaling mobile applications across iOS, Android, and cross-platform environments. By joining SignalFire’s Talent Network, your profile will be shared with our portfolio companies, giving you visibility into exclusive early-stage opportunities that may not be publicly listed.

💡 This is not an application for a specific job. Instead, this is a way to get on the radar of VC-backed startups that are actively hiring AI/ML talent. If you have any questions, please direct inquiries to [email protected].

We’re looking for engineers who are:
✔ Passionate about building high-performance mobile applications on iOS and/or Android
✔ Excited about working with modern mobile frameworks and optimizing mobile experiences
✔ Experienced in native development (Swift, Kotlin) and/or cross-platform development (React Native, Flutter, etc.)

• Design, develop, and maintain mobile applications for iOS, Android, or cross-platform solutions

• Optimize performance, responsiveness, and security across mobile platforms

• Build and maintain APIs, offline storage, and cloud integration for mobile applications

• Work closely with UX/UI designers, backend teams, and product managers to create seamless experiences

• Ensure applications follow best practices in mobile architecture, testing, and deployment

• Implement automated testing, CI/CD pipelines, and monitoring solutions for mobile apps

• Research and integrate new mobile technologies and frameworks to improve scalability and user experience

While each startup has its own hiring criteria, many senior mobile engineering roles in our network look for:

• 5+ years of experience in mobile application development for iOS and/or Android

• Proficiency in Swift (iOS) and/or Kotlin (Android) for native development

• Experience with cross-platform frameworks such as React Native, Flutter, or MAUI

• Strong understanding of mobile UI/UX principles, animations, and accessibility best practices

• Familiarity with REST APIs, GraphQL, WebSockets, and real-time data synchronization

• Experience working with local storage (SQLite, Core Data, Room), cloud services (Firebase, AWS, GCP), and push notification frameworks

• Proficiency in mobile app security practices, authentication (OAuth, JWT), and encryption techniques

• Knowledge of CI/CD pipelines and mobile deployment tools (App Store Connect, Google Play Console, Fastlane)

• Experience in early-stage startups or fast-paced product environments is a plus

• Native Development: Swift (iOS), Kotlin (Android), Objective-C, Java

• Cross-Platform Development: React Native, Flutter, MAUI, Xamarin

• UI & State Management: Jetpack Compose (Android), SwiftUI (iOS), Redux, MobX, Provider

• Networking & APIs: REST, GraphQL, WebSockets, Firebase Firestore, Apollo Client

• Database & Storage: SQLite, Core Data, Room, Realm, Firebase Realtime Database

• Cloud & DevOps: AWS Amplify, Firebase, GCP, Azure, Docker, Kubernetes, Fastlane

• Testing & CI/CD: XCTest, Espresso, Jest, Cypress, Detox, GitHub Actions, Bitrise, Jenkins

• Other Tools: App Store Connect, Google Play Console, Firebase Crashlytics, Sentry

1. Submit your application to join SignalFire’s Talent Ecosystem.

2. We review applications on an ongoing basis to identify strong candidates.

3. If there’s a match, a SignalFire talent partner or a leader from one of our startups may reach out directly.

4. No match yet? We’ll keep your profile on file for future mobile engineering roles in our portfolio.