Open to opportunities

Tuhin Samui

@tuhinsamui

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Staff mobile engineer building secure, high-availability iOS and cross-platform fintech systems at scale.

India

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What I'm looking for

I’m looking to lead mobile architecture and platform engineering for high-scale, security-first fintech products—owning CI/CD, release engineering, and maintainable modular systems while mentoring teams to deliver faster with reliability.

I’m a hands-on Staff mobile engineer with 8+ years building secure, high-availability iOS and cross-platform systems for fintech products used by millions. I focus on mobile architecture, modular SDK design, and production-grade release engineering—staying deep in code while scaling teams and platforms.

I’ve led major re-architectures and platform improvements, including migrating to MVVM + Riverpod and re-sequencing SDK initialization to reduce app launch time by 50%. I’ve also driven release-engineering strategy that cut release time from 250 to 60 minutes, reduced manual effort by 70%, and improved build times by 40%—with reliability as a first-class outcome.

Security and compliance are central to how I build. I’ve implemented hardened mobile app security with app attestation and integrity verification, Firebase App Check, and SSL pinning over TLS to protect against tampering, repackaging, and MITM attacks, alongside fintech security practices like secure networking and KYC/VKYC workflows.

I build platforms that teams can evolve. From engineering management where I scaled an iOS organization from 3 to 20+ engineers, to owning modular architecture transitions (MVC to VIPER/MVVM), I partner across Product, backend, and QA on architecture and design reviews, turning strategy into maintainable systems and dependable CI/CD pipelines.

Experience

Work history, roles, and key accomplishments

Current

Staff Mobile Engineer

Current

Snabbit

Apr 2026 - Present (3 months)

Reduced app launch time by 50% in a Flutter codebase by migrating splash flow to MVVM + Riverpod and improving SDK initialization sequencing with thread management. Built a mobile CI/CD system using GitHub Actions and Fastlane and hardened security with app attestation/integrity, Firebase App Check, and SSL pinning.

Flutter Dart MVVM CI CD GitHub Actions Fastlane iOS Android Shorebird Firebase App Check SSL Pinning TLS Mobile Application Security

Platform Engineer

Ways Cars Limited

Apr 2025 - Mar 2026 (11 months)

Owned mobile architecture and platform engineering, standardizing CI/CD and App Store releases. Built modular mobile systems (MVVM/VIPER) and helped take the product from prototype to production-ready release.

Mobile Architecture CI CD MVVM VIPER

Engineering Manager

Slice

Dec 2021 - Mar 2025 (3 years 3 months)

Built and scaled the iOS engineering team from 3 to 20+ engineers, setting hiring and onboarding frameworks and mentoring senior engineers into technical leadership. Led iOS modular re-architecture (MVC to VIPER/MVVM) and owned release engineering to cut release time from 250 to 60 minutes and reduce manual effort by 70%.

Team Leadership Onboarding IOS Architectures MVC VIPER MVVM Release Engineering Jenkins Bitrise GitHub Actions Jira Slack

Senior Software Engineer

Slice

Jun 2019 - Nov 2021 (2 years 5 months)

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

iOS Development Swift VIPER MVC Cocoapods Crash Analysis Error Handling

Software Engineer

Airtel Payments Bank

Apr 2018 - May 2019 (1 year 1 month)

Designed a secure networking engine handling millions of transactions and implemented end-to-end encryption for compliance and transaction security.

Network Security Compliance iOS

Senior Member of Technical Staff

Slice

May 2016 - Apr 2018 (1 year 11 months)

Built the slice iOS application from scratch by architecting foundational infrastructure and development workflows and managing the full App Store release lifecycle. Reduced crashes by 60% through Crashlytics integration and crash analysis redesign.

iOS Development IOS App Lifecycle Crash Analysis Development Workflow Engineering

Software Engineer

Code Brew Labs

Jan 2015 - Apr 2016 (1 year 3 months)

Built a restaurant management system for iOS from scratch, designing floor and table management algorithms for efficient real-time customer tracking. Owned key iOS application implementation and data logic for real-time operations.

iOS Development Real Time Tracking Algorithm Design