Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Darryl (he/him) is a software engineer invested in creating beautiful products for mobile, specializing in Android development. He's been working on Android native applications and Kotlin for over 5 years.…

Darryl Mak





Darryl (he/him) is a software engineer invested in creating beautiful products for mobile, specializing in Android development. He's been working on Android native applications and Kotlin for over 5 years.…

Available to hire

Darryl (he/him) is a software engineer invested in creating beautiful products for mobile, specializing in Android development. He’s been working on Android native applications and Kotlin for over 5 years.

Skills

Experience Level

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Software Engineer I at GOAT Group

August 1, 2024 - August 31, 2025

Led Android app development for Alias, the GOAT seller app, supporting 3M+ global sellers with analytics-driven pricing and buying patterns. Collaborated with teams in the U.S. and Shanghai. Optimized a Visual Search tool using CameraX and MLKit for barcode scanning and text recognition. Delivered a bulk shipping feature enabling multi-item shipments in a single box, saving millions in shipping costs and advancing profitability goals. Implemented a multi-currency pricing view across 40+ currencies and migrated UI from Android Views/Epoxy to Jetpack Compose with Lazy components. Worked with Backend to define API requirements and provided design feedback during tight deadlines.

Software Engineer I, II at GOAT Group

April 1, 2022 - August 1, 2024

Developed front-end seller experiences for Alias, GOAT’s seller app, supporting 3M+ global sellers with data-driven pricing and analytics. Led migration of UI from Android Views to Jetpack Compose and implemented currency display across 40+ currencies. Collaborated with Backend and Design to meet API requirements and deliver features on a two-month timeline.

Senior Associate Software Engineer at Focus Tech, Capital One

February 1, 2021 - April 1, 2022

Designed and built backend microservices to support the Capital One mobile app using Node.js and AWS. Supported features included vehicle registration renewal and viewing tax documents. Collaborated across teams to draft API specifications meeting internal quality and security standards. Implemented API design and cloud infrastructure with AWS Lambda; mentored junior engineers and interns.

Associate Software Engineer, Digital Identity at Capital One

July 30, 2019 - January 30, 2021

Built Android UI components for an authentication SDK used by multiple Capital One mobile apps. Worked on an Android Kotlin SDK with a complex MVI architecture (Coroutines, Channels, Actors) and Android Fragments. Wrote robust UI tests with Espresso, delivered features such as One-Time Pin (OTP), and launched AirKey NFC authentication. Addressed ADA accessibility requirements and ensured compliance.