Mohshin Shah

Senior iOS Engineer & Swift Expert SwiftUI Specialist crafting fast, secure apps

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12+ years shipping at scale with Swift, SwiftUI, Swift Concurrency, and Combine. I design modular platforms with performance, accessibility, and CI/CD baked in.

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AI-Powered Swift SwiftUI UIKit Modular Architecture Concurrency CI/CD App Security
Apps
15+
Users
1M+
Crash
< 0.2%
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Profile

I'm a Senior iOS Engineer with over 12 years of experience designing, building, and scaling mobile applications across industries including retail, fintech, and construction technology. Over the course of my career, I've delivered 15+ iOS apps to more than one million users worldwide, consistently maintaining crash rates below 0.2%.

My expertise spans Swift, SwiftUI, SceneKit, modular architectures, CI/CD automation, performance optimization, and app security. I’m passionate about building apps that are finely crafted, robust, and scalable, combining technical excellence with a focus on user experience.

Beyond work, I enjoy sharing knowledge through technical articles on Medium, contributing to open-source projects, and continuously learning.

Skills

Languages & Frameworks

Swift SwiftUI Objective‑C Combine UIKit Foundation Async/Await DI Accessibility GraphQL

Architecture & Patterns

MVVM VIPER TCA Modular Architecture SOLID

Tools & DevOps

Xcode Xcode Cloud SwiftLint Fastlane GitHub Actions Bitrise Firebase Amplitude SonarQube Buildkite

Testing & Automation

XCTest XCUITest Snapshot Unit UI E2E Automation Coverage Testsigma

App Operations

App Clips Push SSE Feature Flags Remote Config Secure Coding App Store

Performance & Optimization

Instruments Leak Detection Profiling Memory Async/Await

Integrations & SDKs

BLE REST Firebase SDK SPM Cocoapods

Team & Strategy

Platform Strategy Roadmapping Mentorship Cross‑Functional Agile/Scrum

App Security

Secure Storage Biometrics TLS/SSL pinning Secure Enclave SAST/DAST Obfuscation

Capabilities & Services

Product-ready delivery across build quality, reliability at scale, and security.

Build
  • Swift • SwiftUI • Objective‑C
  • Modular architecture • TCA • MVVM/VIPER
  • Reusable SDKs • SPM first
Scale
  • CI/CD: Fastlane • Bitrise • GH Actions
  • SPM migration: −95% build time
  • Observability: Firebase • Amplitude
Secure
  • Biometrics • Secure Enclave
  • TLS/SSL pinning • Secure storage
  • OWASP Mobile • PCI DSS
Services

Platform Architecture

Modularization, design systems, SDKs, and performance budgets that scale teams.

Services

Delivery & Reliability

CI/CD, feature flags, remote config, analytics, and observability best practices.

Services

Security & Compliance

Threat modeling, secure storage, pinning, and audits aligned with OWASP/PCI.

Projects

Selected work highlighting platform engineering, performance, and product impact.

Gamification SDK

Modular Swift package with analytics, remote config, and feature flags. Drove engagement to 91,850+ users; 17M+ points in month 1.

SwiftUI • SPM • Feature Flags • Analytics

2D Drawing Annotations

High-performance annotation tools for 100MB+ drawings with lazy loading and 0% crash rate; +30% BIM rendering improvements.

UIKit • Metal • Memory Optimizations

Modular Platform Migration

Carthage → SPM migration across multi-module app; −95% build times, CI stability with Fastlane and GitHub Actions.

SPM • CI/CD • Fastlane • GitHub Actions

FairPrice

Fast, reliable grocery app at national scale.

Swift • SwiftUI • Platform

Screening Eagle Inspect

Inspection workflows with offline-first design.

UIKit • Offline • Performance

UOB Mighty

Mobile banking experience with performance focus.

Security • Performance

Latest Articles

Latest posts from @mohshinshah.

View all on Medium

GitHub Projects

Latest repositories from @mohshin-shah.

View all on GitHub

Experience

FairPrice Group — Senior Software Engineer, iOS

01/2022 – Present • Singapore
  • Built iOS engineering team; set standards and mentorship (3 promotions).
  • Improved sprint velocity by 25% via planning with Product & Design.
  • Introduced modular architecture, SwiftUI, CI/CD; migrated to SPM (−95% build time).
  • Launched gamification SDK: 91,850+ users; 17M+ points in month 1.

Screening Eagle Technologies — Senior iOS Development Engineer

05/2019 – 12/2021 • Singapore
  • 2D annotation tools for construction drawings; 0% crash rate for 100MB+ assets.
  • Improved BIM rendering by 30% with Metal optimizations.
  • Offline-first workflows; automated PDF generation (7–8 minutes).
  • Shortened QA by 2 days/sprint; enforced quality via SonarQube & SwiftLint.

Aleph Labs — Application Developer

11/2017 – 05/2019 • Singapore
  • Delivered banking and media apps; led 8World News App.
  • Improved hybrid app launch speed by 30%.
  • Migrated Objective-C code to static libraries (−12–15% size).
  • Implemented biometrics & secure storage; 100% audit pass rate.

Riviko Inc — Lead iOS Developer

09/2016 – 09/2017 • Remote (US)
  • Launched P2P chat/skill exchange app → 1,000+ users in 3 months.
  • Shipped MVP 1 week early; 85% coverage; −40% bugs via automation.
  • 0% crash rate for 6 months using proactive monitoring.

Codal — Senior iOS Developer

06/2015 – 04/2016 • India
  • Built consumer apps with Swift; delivered kiosk MVP in 2 weeks (90% code).
  • Reduced release steps by 80% via CI/CD pipelines.
  • Designed REST APIs for 4+ enterprise apps with Alamofire & URLSession.

Apexon (InfoStretch) — Software Engineer, Enterprise Mobility

09/2014 – 06/2015
  • BMW Dealer Delivery iPad app → −20% delivery time.
  • BLE integration in Proteus Health → +25% patient compliance tracking.
  • 99.7% uptime; −30% release defects via QA/backend alignment.

Lumium Design — Software Engineer, UXD

08/2013 – 11/2014
  • Enterprise apps with HTML5, SAP UI5, JS, Google Maps.
  • Led iOS for BMW, NTT Arc-star, Honeywell; 99.9% crash-free sessions.
  • −35% QA defects via Jenkins + UI automation.

Education & Certifications

Education

  • BE – Computer Engineering, Gujarat Technological University

Certifications

  • OWASP Mobile Top 10 Awareness (Swift, iOS) — Secure Code Warrior
  • PCI DSS v4.0 (Swift, iOS) — Secure Code Warrior
  • MVVM Design Pattern in Swift — Udemy
  • SOLID Principles — Udemy
  • Foundations of Project Management — Google/Coursera

Contributions

Writing

Articles on SwiftUI at scale, performance optimization, TCA, modular development, MVVM, SOLID (featured in NE Digital, MacoClock). Read: SOLID Principles.

Open Source

Applications

A selection of shipped apps on the App Store.

FairPrice

Fast, reliable grocery app at scale.

Screening Eagle Inspect

Inspection workflows with offline-first design.

UOB Mighty

Banking experience with performance focus.

SC Mobile Singapore

Secure mobile banking for Standard Chartered.

Healow@Work

Employee health engagement app.

Riviko

P2P chat/skill exchange — early growth.

Tripstir

Travel discovery and sharing.

CallPotential SmartKiosk

Self-service kiosk app — rapid MVP delivery.

SpendWitty

Local deals and spending insights.

VirtelaView

Network visualization for enterprises.

NTT ArcStar Network View

Network status and monitoring.

Contact

Availability

Available for interviews in Singapore timezone. Excited about AI-powered experiences on Apple platforms.