Ajeesh T S

Mobile App Development

Senior iOS Engineer

I build mobile apps.

I’m Ajeesh T S, a hands on mobile engineer with 15+ years of experience building iOS and cross platform applications with strong attention to product quality, performance, and user experience.

My work sits close to the product: shaping onboarding flows, improving screen clarity, building reliable mobile foundations, and helping teams ship apps that feel simple, useful, and polished.

Projects Download Resume

About Me

I work primarily in mobile application development, with a strong background in native iOS and modern cross platform delivery. I enjoy building clean, readable, stable app experiences where the design, engineering, and product intent are aligned.

Beyond implementation, I actively contribute to product decisions: how users enter the app, what they see first, how screens should be ordered, where friction should be removed, and how the app can feel easier to return to every day.

15+Years Experience

iOSNative Expertise

RNCross Platform Apps

UXProduct Thinking

Technical Expertise

A focused mobile stack built around native iOS, cross platform delivery, and production product quality.

Native iOS

SwiftObjective CSwiftUIUIKit

CombineSwift DataCore DataStoreKit

AVFoundationPush Notifications

Unit TestingUI Testing

Cross Platform

React NativeExpoFlutter

TypeScriptNative Module Integration

OTA UpdatesIn App Purchases

App PerformanceTesting

Product Quality

Onboarding UXProduct Analytics

User RetentionA/B Testing

Paywall OptimizationPerformance Optimization

RevenueCatPostHogFirebaseAppsFlyer

Projects

Selected mobile products where I contributed to the engineering, user experience, and overall product quality.

React Native · iOS + Android

ThyWord

A voice first prayer and scripture app built around a calm daily spiritual routine. My work focused on mobile delivery, onboarding structure, user flow quality, subscriptions, notifications, and making the experience feel simpler and more consistent.

Helped shape onboarding screen order, UX clarity, and decision flow.
Worked on app side implementation across iOS and Android using React Native.
Supported product polish around habit building, readability, and daily return usage.

React NativeExpoTypeScriptRevenueCatFirebasePostHog

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Native iOS · BLE · Connected Product

Flipr

A connected pool care application helping users monitor water quality, receive alerts, control equipment, and manage pool maintenance from a polished mobile experience.

Built native iOS features for a real world connected utility product.
Worked on BLE device communication, water data visibility, alerts, and action flows.
Focused on reliable usability where users can quickly understand status and act with confidence.

SwiftUIKitCore BluetoothREST APIsIoT

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Insights

Short notes on product engineering, mobile execution, user adoption, and building products that can grow beyond launch.

IdeaValidate

MVPFocus

LaunchLearn

AnalyzeImprove

ScaleGrow

Product Engineering

Product Engineering Strategy

From MVP to scalable product: a practical note on building focused MVPs, improving adoption, and scaling products through product thinking, UX, and engineering quality.

Read Article

Resume

A quick summary of my mobile engineering experience, with a downloadable PDF for recruiters and hiring teams.

Senior iOS Engineer

15+ years building production mobile apps.

Specialized in Swift, Objective C, SwiftUI, UIKit, React Native, mobile architecture, product quality, performance optimization, and App Store delivery.

Native iOS

React Native

Product Quality

Remote Delivery

View the resume in your browser or download the PDF for later review.

View Resume Download PDF

Looking for a senior mobile engineer?

I’m available for remote iOS, React Native, and mobile product engineering opportunities where strong ownership and product judgment matter.

itsajeeshts@gmail.com