Software Development Engineer (SDE) – Mobile (iOS & Android) with Web

On-Site, Hyderabad, India · Full-Time

> Only apply if: You have ≥ 1 year of production-grade experience building and shipping cross-platform mobile apps (iOS + Android) using Flutter or React Native — and you can point us to live apps on the App Store / Google Play that you have built. Web development (React / Next.js) is a strong secondary skill.

Who We Are

We are a fast-growing product startup building intelligent, AI-powered software for modern businesses. Our focus is on crafting seamless, high-performance user experiences across mobile and web, powered by scalable backend systems and data-driven intelligence — and we ship to real customers every week.

As we scale, we are looking for a Mobile-first SDE who can take end-to-end ownership of our iOS and Android apps from a single cross-platform codebase, and who can also contribute to our web products when needed.

What You'll DoCore Mobile Development (Primary)

Build and ship production-grade iOS and Android apps from one codebase using Flutter (Dart) and/or React Native (Expo, TypeScript).

Architect scalable, modular mobile apps with clean architecture and reusable component libraries / design systems.

Implement robust state management (Riverpod / Bloc / Provider for Flutter; Zustand / Redux Toolkit / TanStack Query for React Native).

Build smooth, responsive, accessible UIs that feel native on both platforms, with 60/120 fps animations and gestures.

Integrate native device capabilities: camera, location/maps, biometrics, push notifications, deep links, background tasks, in-app purchases, offline storage and sync.

Write platform-specific code (Swift / Kotlin, platform channels, native modules) when a feature needs it.

Own the release process: code signing, TestFlight / Play Console, staged rollouts, OTA updates, crash and performance monitoring (Firebase Crashlytics, Sentry).

Optimize app startup time, memory, battery usage, and bundle size through profiling.

Meta Platform & AI-Driven Experiences

Build Meta app development–related features: integrations with Meta platforms (WhatsApp Business Platform, Messenger, Instagram, Meta Graph API, Facebook Login, Meta SDKs, app review and permissions flows).

Build AI-driven, streaming mobile interfaces — chat/agent UIs, token-by-token streaming, real-time updates, and rich message rendering (markdown, code).

Integrate real-time features using WebSockets, SSE / streaming APIs, FCM/APNs push, or event-driven updates.

Build complex multi-step workflows, dashboards, and data-heavy views (charts, lists, maps) optimized for mobile.

Web Development (Secondary)

Build and maintain web apps using Next.js (App Router), React, TypeScript, and Tailwind CSS.

Share logic, design tokens, and API clients between mobile and web where possible (TypeScript monorepo, shared SDKs, or Flutter Web where appropriate).

Apply sound rendering strategies (SSR / SSG / ISR / CSR) and keep web performance and accessibility high.

Contribute to embeddable / SDK-style web widgets where relevant.

Architecture & Backend Integration

Integrate with backend services (TypeScript/Node and Python) over REST and/or GraphQL APIs.

Implement secure authentication (JWT, OAuth, social login, Sign in with Apple/Google, session-based auth) and secure token storage.

Design offline-first data layers and caching strategies; handle large paginated and infinite lists efficiently.

Ensure robust error handling, observability, analytics, and performance monitoring.

Drive testing strategy: unit, widget/component, integration, and E2E tests (flutter_test, Jest, React Native Testing Library, Detox, Maestro, Patrol; Cypress/Playwright for web).

Engineering & Collaboration

Translate product requirements and Figma designs into polished mobile and web implementations.

Conduct structured code reviews and enforce high-quality coding standards.

Collaborate closely with backend engineers, product managers, and designers.

Build and maintain CI/CD pipelines for mobile and web (GitHub Actions, Fastlane, Codemagic, EAS).

Take ownership of features from concept to production release; mentor junior engineers.

Must-Have QualificationsMobile Expertise (Primary)

≥ 1 year of production experience shipping cross-platform mobile apps to both the App Store and Google Play.

Strong command of Flutter + Dart and/or React Native + TypeScript; willingness to learn the other.

Solid understanding of iOS and Android platform conventions, app lifecycle, permissions, and Human Interface / Material Design guidelines.

Experience with state management, navigation, local storage (SQLite / Hive / Drift / MMKV / WatermelonDB), and offline sync.

Experience with push notifications, deep linking, and app store release and review processes.

Experience with mobile performance profiling and optimization.

API & Integration

Experience integrating mobile and web clients with Node.js and Python backends.

Strong understanding of REST APIs and/or GraphQL.

Familiarity with authentication systems (JWT, OAuth, session-based auth) and secure data handling on devices.

Experience handling streaming responses, WebSockets, and large paginated datasets.

Web Skills (Secondary)

Working knowledge of React, Next.js, TypeScript, and Tailwind CSS.

Understanding of rendering strategies (SSR, SSG, ISR, CSR) and responsive, accessible web design.

Familiarity with form handling and validation (React Hook Form, Zod) and data fetching (TanStack Query).

DevOps & Quality

CI/CD familiarity for mobile (Fastlane, GitHub Actions, Codemagic, EAS) and web.

Strong Git workflows and collaborative branching strategies.

Testing mindset spanning unit, integration, and E2E coverage.

Comfort with Docker-based local development workflows.

Engineering Mindset

Clean, maintainable code adhering to SOLID principles.

Strong debugging and performance-profiling skills.

Ownership-driven, product-first thinking.

Comfortable working independently in an in-office startup environment.

Critical Requirements – High Weightage

> This is non-negotiable. Applications without these will not be prioritized.

Portfolio, Live Apps & Demos

You must be able to show, not just tell. With your application, explicitly share:

An active GitHub profile showcasing real, production-grade mobile code (not just tutorials or forks).

Live apps — App Store and/or Google Play links (or TestFlight / internal-testing builds) that we can install and use right now. Flutter or React Native + TypeScript projects strongly preferred.

A portfolio or demo reel (site, video walkthrough, or screen recordings) highlighting your UI/UX craftsmanship — visual quality, animations, interaction design, and polish you are personally responsible for.

At least one live web project (URL) built with React / Next.js, as secondary proof of web skills.

Demonstrated ability to build complex SaaS products, AI-integrated UIs, real-time apps, or data-heavy interfaces.

Clean code structure, thoughtful architecture, and clear documentation.

In your application, please include direct links to:

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Your GitHub profile (and 1–3 specific repos you're proud of).

At least one live mobile app (App Store / Google Play URL) you built or substantially contributed to.

A portfolio / demo that highlights your UI/UX craftsmanship.

A live web project URL (secondary).

Tell us, for each link, exactly what you built and which parts are yours.

Technical Assessment

We will evaluate your:

Mobile architecture design and scalability decisions.

Code quality and maintainability.

Performance optimization strategy (startup time, rendering, memory).

Ability to convert product requirements and Figma designs into production-ready mobile UI.

End-to-end ownership during feature implementation, including release readiness.

Nice-to-Have

Experience with both Flutter and React Native, or with native Swift / SwiftUI and Kotlin / Jetpack Compose.

Experience building AI-powered, streaming, or real-time mobile interfaces (on-device ML, voice, chat/agent UIs).

Experience with Meta platform integrations (WhatsApp Business API, Instagram/Facebook Graph API, Meta SDKs).

Experience with Flutter Web, React Native Web, or monorepos (Nx / Turborepo) sharing code across mobile and web.

Experience building embeddable widgets / SDKs.

Exposure to animation tooling (Rive, Lottie, Reanimated, Framer Motion).

Experience with Firebase / Supabase, analytics, A/B testing, and feature flags.

Contributions to open-source Flutter / React Native / React projects.

Experience working in early-stage startups.

What We Offer

Competitive salary with a strong growth trajectory.

High-impact role with direct influence on product direction.

Opportunity to work on cutting-edge AI-driven products across mobile and web.

Fast execution cycles and a strong ownership culture.

Learning budget for courses and certifications.

Collaborative in-office engineering culture in Hyderabad.

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If you are passionate about building beautiful, high-performance iOS and Android apps — and want to shape the product experience of a growing startup — send us your GitHub, your live apps, and your portfolio. We'd love to see what you've shipped.