Senior iOS Developer with 9+ Years in FinTech Security

Sikinder Eslavath Sr. iOS Developer

Phone:+1-214-***-**** Email: ******************@*****.***

SUMMARY

•Senior iOS Developer with 9+ years of experience designing and building high-performance iOS and macOS applications using Swift, SwiftUI, and Objective-C.

•Strong expertise in iOS development fundamentals, including Xcode, XCTest, GCD, and modern concurrency (async/await). Proven track record delivering secure, scalable applications in banking and fintech environments.

•Hands-on experience leveraging AI-assisted development tools (including Claude Code) to improve development efficiency, code quality, and SDLC processes. Skilled in building modular architectures, integrating APIs, and optimizing application performance.

•Excellent communication skills with experience working in Agile hybrid environments and collaborating with cross-functional teams.

•Experience building applications across Apple platforms, including iOS and macOS, using Swift, AppKit, and SwiftUI for customer-facing and internal tools.

•Proven success in FinTech, Banking, and Payment Systems, with hands-on experience delivering secure, scalable mobile apps for Bank Of America and Citizen Bank.

•Strong expertise in Swift Concurrency (async/await, actors, Task groups) and MVVM / Clean Architecture, ensuring robust, maintainable, and testable codebases.

•Experienced in modular SDK development, integrating RESTful and GraphQL APIs, and optimizing app performance using profiling tools (Instruments, Memory Graph, etc.).

•Proficient in security and compliance frameworks including OAuth 2.0, Keychain, Secure Enclave, Face ID/Touch ID, and PCI-DSS adherence for mobile transactions.

•Skilled in implementing Core ML, enabling intelligent, AI-driven features such as fraud detection, personalized insights, and chatbots that enhance user engagement.

•Adept at leading Agile teams, mentoring junior developers, conducting code reviews, and collaborating with product, design, and QA teams to deliver high-quality releases on schedule.

•Strong foundation in CI/CD automation using GitHub Actions, Bitrise, and TestFlight, ensuring reliable and efficient release pipelines.

•Passionate about creating intuitive, data-driven, and accessible user experiences with SwiftUI animations, Core Data, and background sync mechanisms.

•Seeking a challenging opportunity to leverage technical expertise, leadership skills, and innovation mindset to deliver impactful mobile solutions and drive business success.

Senior iOS Developer Citizen Bank – Plano, Texas

Domain: Banking / Financial Services Sep 2024 – Present

Key Deliverables:

•Delivered features across Apple platforms, primarily iOS with supporting macOS components.

•Built a Spending Tracker feature showing daily, weekly, and monthly customer spending

•Worked on macOS components using AppKit and SwiftUI for internal banking tools and dashboards.

•Implemented interactive bar charts and visual breakdowns by category and time range

•Used GCD alongside Combine and async/await for background tasks and thread management.

•Processed and aggregated transaction data using Swift Concurrency (async/await)

•Used macOS command-line tools like xcodebuild, git CLI, and scripts for builds, debugging, and CI support.

•Enabled real-time insights for customer expenses across accounts and cards

•Improved customer financial awareness through data-driven visualizations

•Implemented secure identity and authentication modules using Passkeys, Keychain, and Secure Enclave, aligning with banking-grade security standards and improving login success rates by 25%.

•Led modernization of Citizen Bank’s iOS mobile application, migrating major modules from UIKit to SwiftUI to enhance maintainability, performance, and accessibility across personal banking and mortgage workflows.

•Integrated REST and GraphQL APIs to power Spending Tracker analytics, transaction aggregation, and insight generation

•Collaborated with backend and compliance teams to ensure PCI-DSS and SOC 2 adherence for data privacy and secure payment transactions.

•Designed modular Swift Package Manager components enabling reusability across multiple Citizen Bank apps and internal SDKs, reducing duplicated code by 40%.

•Improved app responsiveness by profiling bottlenecks with Instruments, reducing P95 latency by 20% through optimized background tasks and memory leak fixes.

•Enhanced analytics for the Spending Tracker, capturing customer behavior, trends, and anomalies to support insights and AML reporting

•Introduced unit & UI testing with XCTest / XCUITest, achieving 85% code coverage and stabilizing CI/CD pipelines via GitHub Actions and Bitrise.

•Collaborated in an Agile environment with cross-functional teams—product, design, QA, and security—to ensure timely delivery of new banking features and regulatory updates.

•Mentored junior iOS engineers on Swift Concurrency, Combine, and modular architecture, fostering technical excellence within the team.

AI / ML (safe and realistic):

•Used AI-assisted tools (including Claude Code) for code generation, debugging, and improving development productivity

• Applied ML-based logic for transaction categorization and anomaly detection.

Senior iOS Developer

Bank Of America, Austin, Texas Domain: Finance Services / Fintech June 2023 – Aug 2024

Key Deliverables:

●Led the iOS app development using Swift and SwiftUI for BOFA’s core mobile banking and payment app, focusing on delivering a smooth, user-friendly experience with modern UI components.

●Developed high-quality iOS applications using Swift, SwiftUI, and Objective-C

●Built AI-driven fraud detection features using Core ML, reducing fraud by 40%

● Implemented concurrency using GCD and Combine for background processing

● Developed secure authentication systems using OAuth 2.0 and biometric login

● Integrated RESTful APIs for real-time transaction tracking and analytics

● Wrote automated tests using XCTest and managed releases through TestFlight

● Collaborated with cross-functional teams to deliver scalable fintech solutionsLeveraged AI-assisted development tools and prompt engineering to accelerate development and debugging processes

Senior iOS Developer

Target, Sunnyvale, CA

Domain: Retail grocery / E-Commerce June 2022 - may 2023

Key Deliverables:

●Developed and migrated features from UIKit to SwiftUI, improving the app’s performance and modernizing the UI for better customer engagement.

●Built shared Apple platform components supporting both iOS and macOS, improving code reuse across retail workflows.

●Implemented macOS UI components using AppKit with MVVM architecture for internal inventory and order-management tools.

●Implemented RESTful APIs and GraphQL for real-time inventory updates and order tracking, optimizing data fetching and app responsiveness.

●Utilized Core Data, User Defaults, and Keychain for secure data storage, ensuring seamless offline functionality and enhanced payment security.

●Leveraged Combine framework for handling asynchronous data streams, improving the real-time responsiveness of key features like order status and live updates.

●Integrated AI-driven recommendations and personalized push notifications using Core ML, increasing user engagement and retention through tailored promotions.

●Managed CI/CD pipelines with Bitrise, automating testing and deployment to speed up release cycles and ensure smooth feature rollouts.

●Conducted code reviews, added unit tests using XCTest, and mentored junior developers, ensuring high code quality and app stability.

●Collaborated with UX/UI designers to follow Human Interface Guidelines, delivering a consistent and user-friendly interface.

●Implemented GCD and Async/Await for multithreading, improving performance when handling large datasets like product catalogs and customer orders.

iOS Developer

ekincare, Hyderabad, India.

Domain: Health care

September 2016 – September 2021 Key Deliverables:

●Transitioned to a full-time role, continuing to develop and enhance mobile healthcare applications.

●Led the implementation of new features such as appointment scheduling, user authentication, and push notifications using iOS and Swift.

●Collaborated with backend teams to ensure smooth data integration and secure communication between the app and healthcare systems.

●Improved app performance by optimizing code, reducing load times, and resolving technical bugs.

●Contributed to multiple app updates, ensuring the app remained functional and user-friendly across different iOS versions.

●Assisted in the development and debugging of IOS applications using Swift and Objective-C.

●Created Custom UI Navigation View, UI Tab Bar View, UI Custom Cell, UI Alert View by using UIKit framework.

●Collaborated with senior developers to integrate APIs and third-party libraries, enhancing app functionality and performance.

●Utilized Instruments to Analyze Memory Leaks and performance Issues and Fixed bottlenecks.

●Implemented custom classes for calling web services using the secured connection.

●Design and developed reusable, automated tests per coding

●Managed data and memory management from streamlining code.

iOS Developer

ekincare, Hyderabad, India. (Internship) Domain: Health care

June 2016 – September 2016 Key Deliverables:

●Developed healthcare-related mobile applications using IOS and Swift.

●Worked on building intuitive and efficient user interfaces using UIKit to ensure a seamless experience for healthcare professionals and patients.

●Assisted in integrating APIs for real-time data synchronization between the app and the company’s healthcare systems.

●Collaborated with the senior IOS development team to implement best practices in Swift coding, improving app stability and performance.

●Participated in testing, debugging, and app optimization to ensure high-quality performance on various IOS devices.

●Delivered an internship project that provided patients with real-time access to healthcare records through a mobile app interface.

SKILLS

Technical Skills:

●Swift: Advanced

●Swift UI, Combine: Advanced

●Objective-C: Advanced

●AppKit / Cocoa: Advanced

●macOS Development: AppKit, SwiftUI, macOS application lifecycle

●Concurrency (macOS & iOS): GCD, Combine, async/await

●iOS Frameworks: UIKit, Core Data, AV Foundation): Advanced

●Accessibility: Advanced

●RESTful APIs and JSON/XML parsing: Advanced

●OAuth 2.0

●Test-Driven Development TDD): Advanced

●Continuous Integration and Deployment CI/CD): Advanced

●Kotlin, Java: Intermediate

●MVVM/MVC/VIPER architectural patterns: Advanced

●Reactive programming (e.g., RxSwift): Advanced

●Core Bluetooth: Intermediate

●Core Data: Advanced

●Core Location: Advanced

●Apple Push Notification Service APN Intermediate

Development Tools:

●XCode: Advanced

●Git: Advanced

●Cocoa Pods: Advanced

●XCTest: Advanced

●XCUITest: Advanced

●Instruments: Intermediate

Other Skills:

●Agile/Scrum methodologies: Advanced

●Code optimization and performance tuning: Advanced

●Troubleshooting and debugging: Advanced

●App store submission and release processes: Advanced

●Cross-functional collaboration: Advanced

●Project management and leadership: Advanced

●Communication and team coordination: Advanced

●Mentoring and coaching: Advanced

●Documentation and technical writing: Intermediate

●Data Structures and Algorithms

EDUCATION

•Masters in computer Science, Bhelheaven University, Jackson,MS. May 2023

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