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

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 Staff Mobile Engineers who are excited about leading mobile development efforts and scaling 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 and optimizing mobile applications for scalability, performance, and user experience
✔ Experienced in leading mobile projects, mentoring engineers, and defining technical roadmaps
✔ Excited about native (Swift/Kotlin) and cross-platform (React Native, Flutter) development

• Architect, design, and develop scalable, high-performance mobile applications

• Own and optimize mobile performance, security, and reliability

• Lead efforts in mobile API integrations, cloud storage solutions, and data synchronization

• Work with backend teams to create efficient REST, GraphQL, and WebSocket APIs

• Guide and mentor junior engineers, establishing best practices for mobile development

• Define and maintain mobile CI/CD pipelines, testing strategies, and release processes

• Research and integrate emerging mobile technologies to keep applications cutting-edge

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

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

• Deep expertise in Swift (iOS) and/or Kotlin (Android) for native app development

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

• Strong knowledge of mobile UI/UX principles, animations, and accessibility

• Familiarity with state management libraries (Jetpack Compose, SwiftUI, Redux, MobX)

• Hands-on experience integrating cloud services (Firebase, AWS, GCP) and local databases (Core Data, Room, Realm, SQLite)

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

• Strong understanding of automated testing frameworks (XCTest, Espresso, Detox, Cypress)

• Experience with CI/CD pipelines and mobile deployment tools (Fastlane, Bitrise, App Store Connect, Google Play Console)

• Proven leadership in technical strategy, architecture, and mentoring engineers

• 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.