Website:
joinsiren.com
Job details:
Build-from-scratch role
Full-time Contractual role (initial 2-3 months) with potential to convert full-time
Location: Koramangala, Bangalore, hybrid allowed. Open to remote for the right candidate.
Website: https://www.joinsiren.com
App: Live on Play Store. iOS to be built from scratch.
About SirenScams are getting smarter. Fake calls sound real. Fraud links look official. Scammers know how to create panic, trust, and urgency better than most brands know how to create clarity.
Siren is being built to change that.
Siren is a consumer safety app that helps people protect themselves and their families from digital scams across calls, SMS, links, risky apps, device settings, data leaks, and more. We are building for India first, with the ambition to become the digital safety companion people trust every day.
We are already live on the Play Store and have crossed 25,000+ downloads. Now we are looking to bring Siren to iOS from the ground up.
This is not a maintenance role. This is a build-from-scratch role where you will help shape how digital safety should work on the iPhone.
What You’ll Be DoingAs an iOS Developer at Siren, you will be responsible for building the first version of the Siren iOS app from scratch, working closely with product, design, backend, and growth teams.
You will:
- Build the Siren iOS app from the ground up using modern iOS development practices.
- Translate product requirements, user flows, and Figma designs into clean, reliable, production-ready iOS experiences.
- Work through iOS-specific constraints and platform capabilities for safety, security, alerts, permissions, notifications, browser/link handling, SMS filtering where applicable, and family-led flows.
- Integrate APIs, analytics, push notifications, attribution, crash reporting, and other product infrastructure.
- Collaborate with product and design to define what should be native, what needs platform-specific adaptation, and what cannot work the same way as Android.
- Write clean, maintainable, well-structured code with attention to performance, security, privacy, and reliability.
- Help set up the iOS engineering foundation: architecture, app structure, release process, testing practices, and App Store readiness.
- Debug issues, fix crashes, optimize performance, and improve the app based on user feedback and product metrics.
What We’re Looking ForYou should be someone who can build fast, think clearly, and understand that iOS is not just “Android but on Apple.”
You bring:
- 3 to 6 years of hands-on iOS development experience, preferably across consumer apps.
- Strong experience with Swift, SwiftUI and/or UIKit, and native iOS app development.
- Experience building apps from scratch or owning large parts of a production app.
- Good understanding of iOS app architecture such as MVVM, Coordinator, modular architecture, or similar patterns.
- Experience integrating REST APIs, authentication flows, push notifications, deep links, analytics, and crash reporting.
- Strong understanding of Apple platform guidelines, permission flows, privacy expectations, and App Store review constraints.
- Ability to work with Figma designs and translate them into polished, responsive, high-quality UI.
- Comfort working in ambiguity, especially when product behavior differs across Android and iOS.
- Strong debugging, performance optimization, and problem-solving skills.
- Ability to communicate trade-offs clearly to product, design, and backend teams.
- Good product sense: you should care not just that something works, but whether it feels clear, trustworthy, and useful to the user.
Bonus PointsYou will stand out if you have:
- Experience building consumer safety, security, fintech, privacy, utility, family, or subscription apps.
- Experience with iOS-specific capabilities such as Notification Service Extensions, SMS Message Filter Extensions, Safari Extensions, App Groups, Keychain, StoreKit 2, and deep linking.
- Experience with StoreKit/subscriptions, family plans, referral flows, or paywalls.
- Experience with analytics tools like Firebase, CleverTap, AppsFlyer, Mixpanel, or similar.
- Experience building apps that require careful permission education and trust-building UX.
- Experience setting up CI/CD, TestFlight pipelines, automated testing, and App Store release processes.
- Basic understanding of Android behavior so you can collaborate on platform parity decisions without blindly copying Android.
What This Role Is NotThis is not a role where you will only pick up tickets and implement screens.
This is also not a role where the iOS app simply copies the Android app screen by screen.
Siren on iOS will need thoughtful platform adaptation. Some Android capabilities may work differently on iOS. Some may need to be redesigned. Some may not be possible in the same way at all.
We need someone who can build, question, adapt, and help us make the right product calls for iOS users.
The job is to build an app that feels native, trustworthy, fast, and useful from day one.
Why Join SirenBecause the problem is real.
Every day, people lose money, data, and peace of mind to scams that look increasingly legitimate. Siren is trying to become the app that sits between users and those moments of risk.
You will get to shape:
- The first iOS version of a live consumer safety product.
- A build-from-scratch mobile architecture.
- A category that is still being defined.
- High-trust user journeys across onboarding, alerts, protection, and family safety.
- A product that has both India-first relevance and global potential.
This is an early role. There will be ambiguity, fast decisions, and platform constraints. There will also be a lot of room to shape the iOS product properly.
Role TypeThis is a contractual role to begin with, with the potential to convert into a full-time role based on fit, scope, and performance.
LocationKoramangala, Bangalore, hybrid allowed.
We are also open to remote candidates if the experience, ownership, communication, and execution quality are strong.
How to ApplyWrite to support@joinsiren.com with:
- Your resume
- Links to iOS apps you have built or significantly contributed to
- Your GitHub / portfolio / App Store links, if available
- Confirmation that you have downloaded and explored the Siren app on the Play Store or gone through the Siren website
- Your POV on:
- What should be straightforward to build on iOS
- What may need to work differently from Android
- Which iOS apps you think do trust, onboarding, notifications, or safety UX really well
- What engineering choices you would make while building Siren iOS from scratch
We care less about perfect answers and more about how you think, build, and handle trade-offs.
Siren is just a friend looking out for everyone’s digital safety.
Click on Apply to know more.