Key Responsibilities

Native iOS development using Swift and the current iOS SDK
Implement recent features based on product requirements
Maintain existing applications, including bug fixes and performance optimization
Integrate with backend APIs (REST / GraphQL) and cloud services (AWS-hosted)
Must have: Implement device communication over BLE (CoreBluetooth) — BLE queue management, scanning and scan filtering, ciphering, GATT services/characteristics, and hardware communication protocols for smart devices
Implement UI/UX following design specifications and Apple Human Interface Guidelines
Manage app store submission, builds, and release management
Write unit and UI tests to minimize defects and reproduce intermittent issues
Diagnose and resolve hard-to-reproduce production issues using analytics and crash data
Conduct code reviews and maintain technical documentation
Collaborate closely with the Cloud/Web team on API integration

Required Skills & Experience

Core iOS & Language

Expert-level native iOS development (Swift, current iOS SDK)
Strong command of both SwiftUI and UIKit, with sound judgment on when to use each
Concurrency: async/await, Combine and GCD; thread-safety and race-condition handling; tracing and preventing memory leaks

Architecture & Design

MVVM and Clean Architecture in depth, including the domain / Use Case layer
Dependency Injection; designing reusable UI and functional components across the app

APIs, Networking & Security

RESTful and GraphQL integration (Alamofire); awareness of SOAP and its trade-offs
API caching, request optimization (reducing redundant calls), and timeout configuration
Token-based auth: JWT (payload/claims), refresh tokens and expiry handling, SSO,



Cognito or similar
Certificate / SSL pinning and certificate renewal; secure credential storage (Keychain)

Data & Persistence

Persistence mechanisms (Keychain, UserDefaults, Core Data / local DB) and secure storage of sensitive data
Handling data migration and integrity issues across app updates

BLE / Connected-Device Communication (core to the role)

Hands-on CoreBluetooth: full BLE flow (scanning → connection → service discovery → communication → disconnection)
BLE queue / operation management, scan filtering, GATT/ATT, services and characteristics
MTU / packet-size handling, response parsing, acknowledgements and reliable byte-level transfer, exponential retry and reconnection
Ciphering and encrypted device communication; OTA firmware-update considerations

Notifications, Analytics & Observability

Push notifications (APNS): payload structure, parsing, and payload-driven navigation
Analytics and crash reporting (Firebase / Crashlytics); using analytics and logs to debug elusive production issues

Quality, Tooling & Delivery

CI/CD pipelines for mobile (e.g., Fastlane); app-store submission (TestFlight, Apple App Store)
Build / dependency tooling: Xcode, CocoaPods, Swift Package Manager
Testing: XCTest, XCUITest; a clear view of meaningful coverage and which layers to test




Localization implementation and management (incl. tooling such as Phrase); awareness of iOS/Android localization differences

Preferred / Nice to Have

Experience with IoT / connected-device companion apps (strongly preferred)
Experience with OTA firmware update flows
Location features: Geofencing (background and terminated-state behaviour), MapKit
Siri Shortcuts, AWS service integration, in-app chat SDKs
Designing a shared codebase across iOS and macOS
Practical use of AI-assisted development tools in day-to-day workflow
Good to have: B1 visa

Technical Screening Focus Areas

Candidates should be prepared to go deep, with real implementation detail rather than theory, on:

Project walkthroughs — architecture decisions, individual contributions, real production challenges and how they were resolved
BLE end-to-end — flow, GATT and characteristics, MTU/packet size, reliable transfer and acknowledgements, retry and reconnection, max simultaneous device connections
Concurrency — async/await vs Combine, thread-safety, race conditions, memory-leak tracing
Architecture — MVVM/Clean, Use Cases, Dependency Injection, reusability
Networking & security — REST/GraphQL (and SOAP), caching and optimization, JWT and refresh tokens, SSO, SSL pinning and certificate renewal
Persistence — Keychain vs UserDefaults, secure storage, data migration across app updates
Supporting areas — APNS payload handling, analytics-led production debugging, localization, and unit-testing strategy

Pay: ₹150,000.00 - ₹180,000.00 per month

Benefits:

- Commuter assistance
- Food provided
- Provident Fund

Work Location: In person

📌 iOS Developer (India)
🏢 Epochfolio
📍 India