Senior iOS Developer

About the Role

We are looking for a Senior iOS Engineer to build and own the trading experience on iOS in Swift — real-time

data via Combine, interactive charting, smooth animations, and the premium feel expected of a financial

application. What We’re Looking For

You have shipped native Swift apps that handle real-time data, complex reactive pipelines, and

performance-sensitive UI. You know UIKit and SwiftUI deeply and can bridge between them confidently. Ideally, you have worked on trading, fintech, or data-intensive iOS products. You take ownership of your domain, drive

technical decisions, and hold yourself and your team to a high quality bar. What You’ll Do

• Own the mobile trading experience on iOS — module architecture, navigation, performance, and

end-to-end quality. • Build and optimize real-time data rendering using Combine — WebSocket streams, subscription

management, and efficient SwiftUI/UIKit binding. • Integrate complex WKWebView-based components with JavaScript–Swift message passing. • Collaborate with product and design to deliver polished, trust-building interfaces for a financial product. • Define iOS engineering standards — architecture patterns, testing strategy, accessibility, and

performance benchmarks. • Drive code reviews, mentor team members, and champion best practices across the iOS team. • Participate in stabilization and release cycles — Instruments profiling, device matrix testing, and

regression analysis. Must-Have

• 4+ years native iOS development with Swift in production apps on the App Store. • Strong Combine experience for reactive programming, data streams, and async coordination. • Experience with both SwiftUI and UIKit — ability to compose views and bridge between the two. • Experience with real-time data rendering and WebSocket integration on iOS. • Experience integrating WKWebView with JavaScript bridge (WKScriptMessageHandler). • Understanding of iOS architecture patterns — MVVM, Coordinator, Clean Architecture. • Experience with push notifications (APNs), deep linking, and Universal Links.

Nice-to-Have

• Prior experience building trading, brokerage, or fintech iOS apps. • Experience with charting library integration on iOS. • Experience building custom UI components — animated charts, calendar views, card-based layouts. • Knowledge of server-driven UI (SDUI) patterns for dynamic rendering. • Familiarity with accessibility best practices (VoiceOver, Dynamic Type). Tech Stack

Language Swift 5.9+

UI SwiftUI + UIKit (hybrid)

Reactive Combine, async/await

Real-time URLSessionWebSocketTask / Starscream, Combine streams

Charting Charting library via WKWebView bridge

Testing XCTest, XCUITest (E2E), Instruments profiling

• Design and Build advanced applications for the Android.
• Work with outside data sources and Rest API's
• Worked on MVVM architecture, third party libraries etc.
• Experience with Kotlin, Rxjava.

iOS Developer responsibilities include:

• Design and build applications for the iOS platform
• Ensure the performance, quality, and responsiveness of applications
• Collaborate with a team to define, design, and ship new features
•  Identify and correct bottlenecks and fix bugs
• Help maintain code quality, organization, and automatization
• Experience with iOS frameworks such as Swift UI, Objective C,
•  UIKit, AVFoundation, Core Bluetooth, Combine, PushNotifications.
•  Experience with Databases - Core Data, Realm  
•  Familiarity with RESTful APIs to connect iOS applications to back-end services
•  Knowledge of Architecture - MVC and MVVM
•  Understanding of Apple’s design principles and interface guidelines
•  Excellent communication Skills and Client interaction.

• Experience in integrating with various SDKs like Swift
• Significant experience working with react native along with tools like Flux, Flow, Redux, etc.
• In-depth knowledge of JavaScript, CSS, HTML, functional programming, and front-end languages
• Strong knowledge of React fundamentals such as Virtual DOM, component lifecycle, and component state
• A complete understanding of the full mobile app development lifecycle right from prototyping
• Knowledge of type checking, unit testing, typescript, prop types, and code debugging
• Experience working with REST APIs, document request models, offline storage, and third-party libraries
• Strong understanding of web technologies like JavaScript, HTML, and CSS
• Knowledge of user interface design and responsive designs
• Well-versed in a variety of React Native software and technologies such as Jest, Enzyme, ESLint, and so on
• Understanding of React Native best principles and design aesthetics
• A positive mindset and continuous-learning attitude
• A collaborative approach to building apps and solving complex problems
• Attention to detail and problem-solving skills
• Client-focused approach to create user-centric designs
• Good interpersonal and collaboration skills
• Ability to write clean, well-documented code that follows good coding practices
• Good in Agile development process.
• Excellent English verbal and communication skills.
• Should be able to handle the customer individually as needed
• Support the customer as and when required

Desired skills

• Knowledge of UI development (UI Kit, App Life Cycle, View Controller life cycle, Storyboards, Auto layout)
• Basic and Advanced concepts of Swift (for e.g., generics, KVO, etc.)
• Minimum 1 year experience in Swift.
• Implementation details of complex features (e.g., push notifications, Analytics integration, accessibility, features of health kit, deep-linking, etc.)
• MVC, MVVM, VIPER design patterns and other patterns used in iOS
• Apple UI guidelines, Guidelines/process to submit app to the App Store

Personal attributes

• Good communication skills.