Tuhin Samui

Lead iOS Engineer & Former EM

Building large-scale fintech mobile products and leading high-performance engineering teams.

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Tuhin Samui
TS
9.5+ Years Experience
M+ Users Served
99% App Stability Achieved
— Site Visitors

About Me

Driving Innovation in Mobile Technology

I'm a lead iOS engineer with 9.5+ years specialising in fintech mobile development. I help teams deliver outstanding mobile apps that scale to millions of users, combining deep technical expertise with engineering leadership.

iOS Development Expert
Team Builder & Mentor
Tech Strategy & Innovation

Tech Stack

Languages
Swift Objective-C
Frameworks
UIKit SwiftUI Combine XCTest SPM CocoaPods Fastlane
Tools
Xcode Instruments Bitrise GitHub Actions Jira Figma

Featured Projects

slice — Fintech App

Led modular re-architecture and engineering teams for a fintech platform serving millions of users. Reduced build time by 40% and release time from 250 to 60 minutes.

View on App Store →

Airtel Payments Bank

Built secure networking engine, end-to-end encryption, and B2B SDK integrations for a banking platform handling millions of transactions.

View on App Store →

Experience

Independent iOS Consultant / Mobile Engineer

Apr 2025 – Present

Remote

  • Architecture consulting to early-stage startups building iOS applications.
  • Designed modular mobile architectures using Swift, MVVM/VIPER and reusable SDK components.
  • Helped teams launch and distribute apps through TestFlight and AppStore pipelines.
  • Guided teams on CI/CD automation using Fastlane, Bitrise and GitHub Actions.

Engineering Manager – Mobile

Dec 2021 – Mar 2025

slice  ·  Bengaluru

  • Led modular re-architecture (MVC → VIPER/MVVM), improving scalability and maintainability.
  • Optimized CI/CD pipelines (Jenkins → Bitrise → GitHub Actions), reducing build times by 40%.
  • Automated release workflows, reducing manual effort by 70% and cutting release time from 250 to 60 minutes.
  • Drove architectural alignment through PRD/ARD/TRD reviews across mobile, backend, and QA.
View on App Store →

Senior Software Engineer – iOS

Jun 2019 – Nov 2021

slice  ·  Bengaluru

  • Designed and implemented modular, production-grade iOS components in a regulated fintech environment.
  • Led architecture migration (MVC → VIPER) and built SDK-ready modular components via CocoaPods.
  • Improved app stability from 85% to 99% through structured crash analysis and error-handling redesign.

Software Engineer – iOS

Apr 2018 – May 2019

Airtel Payments Bank  ·  Gurugram

  • Designed secure networking engine handling millions of transactions.
  • Implemented end-to-end encryption for compliance and transaction security.
  • Built B2B SDKs (xcframeworks) enabling scalable banking integrations.
  • Worked on onboarding systems: wallet KYC, VKYC, document verification.
View on App Store →

Senior Member of Technical Staff – iOS

May 2016 – Apr 2018

slice  ·  Bengaluru

  • Built the slice iOS application from scratch and managed the full AppStore lifecycle.
  • Architected foundational mobile infrastructure and development workflows.
  • Led transition from UIWebView/WKWebView-based to a fully native iOS application.
  • Reduced crash reporting by 60%. Integrated Crashlytics for production observability.

Software Engineer – iOS

Jan 2015 – Apr 2016

Code Brew Labs  ·  Chandigarh

  • Built a restaurant management system for iOS from scratch, focusing on scalability and UX.
  • Designed the algorithm for floor and table management for efficient customer tracking.
View on App Store →
Start

Open Source

iExtend

iOS extension library published on GitHub and CocoaPods.

GitHub → CocoaPods → MIT
import iExtend
class MyVC {
  extend()
}

iStoryBoard

UIKit Storyboard integration support library for Swift.

GitHub → CocoaPods → MIT
import iStoryBoard
let vc =
  VC.load()

My Insights

Latest Articles & Talks

The Future of iOS Development

Exploring trends and innovations in the iOS ecosystem — SwiftUI, Swift Concurrency, and modular architecture at scale.

Leading High-Performance Mobile Teams

Strategies for effective engineering leadership — from CI/CD automation to async remote collaboration.

Modular Architecture in Fintech

How we migrated a monolithic iOS app to a fully modular VIPER architecture serving millions of users.

AI-Augmented Engineering

How tools like Claude Code and Cursor are changing the way iOS engineers write, review, and ship code.

Let's Connect

Interested in working together or just want to chat? Get in touch!

Send an Email  ›  Drop a Hi

📍 Bengaluru, India  ·  +91-9126239323