Sanjay Dey

Experienced iOS Developer with 7+ years of expertise in Swift, Objective-C, Java, Kotin and mobile platform development. Proficient in Java development, offline syncing, multitasking, and healthcare technologies. Delivered secure, scalable mobile applications like Nexus Pay and HIPAA-compliant healthcare solutions such as Augmedix Go and Scribe Mobile.

Work Experience

Staff Software Engineer (iOS)

📅 Jul 2023 – Present

Implemented iOS and Android features using Figma, GraphQL, and Go/Scribe Mobile, improving UX and reducing task time by 30%.

Created an encryption SDK, enhancing data security by 50% and aligning with compliance standards.

Cut crash rates by 40% by using Redux architecture and XCTest.

Led code reviews, reducing bugs by 25% and improving integration/testing speed.

Collaborated cross-functionally in Agile SDLC to improve code quality and delivery.

Jr. Engineer – Sr. iOS Engineer

📅 Feb 2018 – Jul 2023

Built a $2B+ wallet app with seamless UX, secure payments, and App Store success.

Refactored legacy code into MVVM & Coordinator patterns.

Used TDD and XCTest to boost code robustness and improve retention by 15%.

Integrated Firebase Analytics to enhance user experience.

Automated pipelines via Jenkins & Fastlane, saving ~7 hours/week.

Developed EKYC modules, cutting onboarding cost by 50%.

Scaled Nexus Pay (1.5M ➝ 6M users) and Nagad (1M ➝ 60M users) with zero major downtime.

Mentored 10+ juniors, delivered 95% on-time projects across 5+ teams, improving scalability by 30% and stability by 25%.

Built credit analysis mockups using JavaScript + Django + ML integration.

Advocated innovative engineering with strong verbal/written communication.

Intern

📅 Jun 2017 – Sep 2017

Built an E-Commerce platform connecting farmers to consumers, improving transaction efficiency in agricultural markets.

Projects

AI-powered clinical scribe platform with real-time HIPAA-compliant audio transcription.

Cut documentation time by 30%

Improved production debugging with resumable logs and event tracking

Nexus Pay

Bangladesh's first fully cardless banking app (Dutch-Bangla Bank)

Enhanced UX and customer satisfaction (+20%)

Boosted app performance by 50% using Coordinator & DI

Kona Live Object Detection SDK

Anti-spoofing SDK for secure identity verification

Zero fraud cases post-launch within 3 months

White-box Cryptography

Open-source secure data processing framework (SPM, CocoaPods, Carthage)

Education

Rajshahi University of Engineering & Technology

📅 Jan 2015 – Dec 2018