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I'm Vishnu Sasikumar, a Senior iOS Developer with over a decade of building robust mobile apps. I specialize in crafting scalable, user-centric experiences using SwiftUI and UIKit, and I enjoy turning complex requirements into clean, maintainable code. I collaborate across teams to integrate RESTful APIs, Firebase services, and secure authentication, and I focus on robust CI/CD pipelines to ensure reliable releases. I'm passionate about delivering secure, high-performance mobile solutions that align with business goals.…I'm Vishnu Sasikumar, a Senior iOS Developer with over a decade of building robust mobile apps. I specialize in crafting scalable, user-centric experiences using SwiftUI and UIKit, and I enjoy turning complex requirements into clean, maintainable code. I collaborate across teams to integrate RESTful APIs, Firebase services, and secure authentication, and I focus on robust CI/CD pipelines to ensure reliable releases. I'm passionate about delivering secure, high-performance mobile solutions that align with business goals.

Vishnu Sasikumar

App Developer, Web Developer, Full Stack Developer, +2

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I'm Vishnu Sasikumar, a Senior iOS Developer with over a decade of building robust mobile apps. I specialize in crafting scalable, user-centric experiences using SwiftUI and UIKit, and I enjoy turning complex requirements into clean, maintainable code. I collaborate across teams to integrate RESTful APIs, Firebase services, and secure authentication, and I focus on robust CI/CD pipelines to ensure reliable releases. I'm passionate about delivering secure, high-performance mobile solutions that align with business goals.…I'm Vishnu Sasikumar, a Senior iOS Developer with over a decade of building robust mobile apps. I specialize in crafting scalable, user-centric experiences using SwiftUI and UIKit, and I enjoy turning complex requirements into clean, maintainable code. I collaborate across teams to integrate RESTful APIs, Firebase services, and secure authentication, and I focus on robust CI/CD pipelines to ensure reliable releases. I'm passionate about delivering secure, high-performance mobile solutions that align with business goals.

Available to hire

I’m Vishnu Sasikumar, a Senior iOS Developer with over a decade of building robust mobile apps. I specialize in crafting scalable, user-centric experiences using SwiftUI and UIKit, and I enjoy turning complex requirements into clean, maintainable code.

I collaborate across teams to integrate RESTful APIs, Firebase services, and secure authentication, and I focus on robust CI/CD pipelines to ensure reliable releases. I’m passionate about delivering secure, high-performance mobile solutions that align with business goals.

Skills

Experience Level

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Hindi

Intermediate

Telugu

Intermediate

Malayalam

Intermediate

Tamil

Intermediate

Kannada

Intermediate

Work Experience

Senior Software Engineer at Westpac New Zealand

November 1, 2025 - Present

Senior software engineer focusing on iOS/mobile development, with emphasis on Swift, UIKit, and SwiftUI. Implemented MVVM architecture, integrated RESTful APIs, and leveraged Firebase Analytics and Crashlytics. Contributed to CI/CD automation and secure authentication workflows.

Senior iOS Developer at Catch Design

May 1, 2025 - August 31, 2025

Developed and maintained iOS applications using Swift, UIKit, and SwiftUI with MVVM. Built modern, declarative user interfaces and applied async/await for reactive programming. Configured CI/CD pipelines with GitLab and GitHub for automated builds, tests, and deployments.

Senior iOS Developer at Genesis

April 1, 2025 - May 31, 2025

Assessed and prioritized high-impact technical debt from recent tech changes. Refactored legacy Objective-C/Swift code for modern iOS architecture standards and updated components for better maintainability and scalability.

Senior iOS Developer at Fiserv

June 1, 2024 - April 30, 2025

Built financial mobile apps with SwiftUI, Swift, and Objective-C for real-time data. Delivered secure, scalable components integrated with enterprise APIs. Championed test automation (XCTest, XCUITest) and CI/CD; improved trading dashboards with optimized concurrency and performance.

Senior iOS Developer at Genesis

December 1, 2021 - April 30, 2024

Built financial mobile apps with SwiftUI, Swift, and Objective-C for real-time data. Delivered secure, scalable components integrated with enterprise APIs. Championed test automation with XCTest, XCUITest, and CI/CD. Improved trading dashboards with optimized concurrency and performance.

Senior iOS Developer at Bidfood NZ

June 1, 2021 - December 31, 2021

Lead iOS developer responsible for code design, implementation, and maintenance of a global mobile platform for the iOS chapter, introducing modern iOS development practices and architecture.

Mobile Application Developer at Bidfood NZ

May 1, 2017 - June 30, 2021

Developed iOS/Android applications for a range of products; collaborated with design, sales, and testing teams to deliver high-quality apps with strong user satisfaction.

Android / iOS Developer Intern at Media39C

April 1, 2016 - October 31, 2016

Designed and developed iOS and Android apps per provided documentation; contributed to the app feel to meet client expectations.

Mobile Application Developer at VirtualTAG.co.nz - Branding and Web Design

April 1, 2016 - April 30, 2017

Developed Android, iPhone, and iPad applications; collaborated with design, sales, and testing teams to deliver quality apps with high user satisfaction.

Mobile Application Developer at Just Call InfoService

August 1, 2013 - December 31, 2015

Developed mobile applications for Blackberry; delivered two products (Call Kerala and Call UAE) in JAVA Blackberry; worked on Blackberry 10.