09/23/2026 updated

IN
100 % available

iOS Software Engineer | SwiftUI | Offline-First Architecture | HealthKit Integrations

Hyderabad, India
Only remote
Indian Institute of Information Technology Bhagalpur (GPA: 7.5/10)
Hyderabad, India
Only remote
Indian Institute of Information Technology Bhagalpur (GPA: 7.5/10)

Profile attachments

Ishan_Nandwal_CV_3_YOE.pdf

About me

Passionate and skilled iOS developer

Apple IOSGitHubIOS SDKSystems IntegrationUser Interface TestingUikitSwiftuiIos FrameworksSwift (Programming Language)BackendFitbit
iOS Development with SwiftUI & UIKit
Extensive experience building production-grade iOS applications using SwiftUI and UIKit, including full migrations from Storyboard-based UIKit to SwiftUI across major app flows, adopting MVVM and reusable component patterns.

Offline-First Architecture & Data Layer Design
Expertise in architecting offline-first data layers using Realm with AES-256 encrypted storage, automatic conflict resolution, and transparent online/offline synchronization, enabling full app functionality without a network connection.

HealthKit, Fitbit & Garmin Wearable Integrations
Hands-on experience building HealthKit, Fitbit, and Garmin integrations with background synchronization, handling ingestion, normalization, and persistence of steps, sleep, heart rate, weight, mood, and activity data.

App Store Publishing & Monetization
Independent management of Apple certificates, provisioning, App Store submissions, phased rollouts, Remote Config, and monetization through RevenueCat (IAPs and subscriptions) and Google Ads with GDPR consent.

CI/CD & DevOps Tooling
Proficiency with Fastlane, CircleCI, Docker, Git, JIRA, and GitHub Actions for automating build, test, and release pipelines, reducing development and release cycle times.

Crash Reporting & Performance Monitoring
Integration of Sentry SDK end-to-end for crash reporting, performance monitoring, and issue tracking, with proactive production triage driving measurable improvements in crash-free session rates.

Biometric Authentication & Security
Integration of Face ID and Touch ID biometric authentication into secure login and high-value transaction flows, replacing legacy password-only patterns and strengthening application security.

Backend & Web Technologies
Working knowledge of Node.js, React.js, Next.js, Ruby on Rails, MongoDB, REST APIs, and AWS for full-stack context and backend integration.

Unit & UI Testing
Authoring unit and UI test suites achieving approximately 97% code coverage across critical business-logic modules using Swift testing frameworks.

WidgetKit & Home Screen Widgets
Building Home Screen and Lock Screen widgets using WidgetKit and App Groups, with reliable local notification scheduling and background refresh optimization for battery efficiency.

Experience

Professional experience0 - 5 years
Freelancer since2026

Languages

EnglishFluent

Project history

Software Engineer - iOS

Terryberry
Integrated Cloudflare Turnstile into login and sign-up flows. Adopted Apple's Liquid Glass design system across 20+ screens. Integrated Sentry SDK for crash reporting and performance monitoring, achieving 99.84% crash-free session rates. Architected an offline-first data layer using Realm with AES-256 encrypted storage. Built HealthKit, Fitbit, and Garmin integrations with background synchronization. Led full migration from Storyboard-based UIKit to SwiftUI adopting MVVM. Introduced the Coordinator pattern to decouple navigation from view controllers.

Sole Developer

Independent Project - QuickScan QR & Barcode Scanner
Independently managed Apple certificates, provisioning, App Store submission, phased rollouts, Remote Config, and ongoing production updates; shipped to 100+ users. Built a high-performance AVFoundation scanner optimized for sub-second latency. Implemented monetization through RevenueCat (IAPs and subscriptions), Google Ads with GDPR consent, Firebase Crashlytics, and Remote Config. Stack: SwiftUI, AVFoundation, RevenueCat, Firebase, Google Ads.

Sole Developer

Independent Project - ReminDown Countdown & Home Screen Widgets
Built Home Screen and Lock Screen widgets using WidgetKit and App Groups. Implemented reliable local notification scheduling and a complete RevenueCat subscription flow including sandbox testing, purchase restoration, and entitlement management. Optimized background refreshes for battery efficiency and shipped to 100+ users. Stack: SwiftUI, WidgetKit, UserNotifications, App Groups, RevenueCat, Firebase.

Product Engineer - iOS

Loyalty Juggernaut
Designed and implemented universal deep linking across global loyalty program apps. Redesigned Statements and Destinations screens using reusable SwiftUI components, reducing screen load times by 25-30%. Integrated Face ID / Touch ID biometric authentication. Integrated Swrve SDK for targeted in-app messaging and push notifications, reducing development and release cycle time by 20%+. Authored unit and UI test suites achieving approximately 97% code coverage. Stack: Swift, UIKit, SwiftUI, MVVM-C, SPM, Firebase, Fastlane, CircleCI, Alamofire, Contentful, AEM.

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