Hi, my name is

Dennis (Duy Bui).

Mobile Engineer & Team Lead.

A mobile engineer with 8+ years shipping native Android and iOS apps, now leading an engineering team at Joblogic. I care about clean architecture, native performance, and bridging the gap between what clients need and what we build.

View My Work

GitHub LinkedIn Medium

02.

Skills

Languages & UI

KotlinSwiftJetpack ComposeSwiftUIFlutter

Architecture

Clean ArchitectureMVVMSystem Design

Android Libraries

CoroutinesFlowHiltRetrofitRoomCameraXMedia3 / ExoPlayerML Kit

Backend & Integration

REST APIsGraphQLFirebase

Testing & Quality

Unit TestingUI TestingPerformance OptimizationMemory Leak DetectionSecurity Best Practices

DevOps & Release

CI/CDFastlaneGitHub ActionsAzure DevOpsGoogle Play ConsoleApp Store Connect

Leadership

Technical LeadershipCode ReviewMentoringAgile / Scrum

03.

Experience

07/2025 — Present

Engineering Team Lead — Enterprise Customer @ Joblogic

United Kingdom

▹Lead a team of 4 engineers across the full SDLC — planning, spec review, and delivery.
▹Act as the primary contact point with cross-functional teams (BA, Infra, QC).
▹Drive Enterprise customer onboarding by bridging the gap between client needs and the system.
▹Serve as subject-matter expert and technical adviser for mobile.

.NETVue.jsKotlinSwiftAgile / SDLC

04/2023 — 07/2025

Senior Mobile Developer @ Joblogic

United Kingdom

▹Developed and maintained both Android and iOS apps, refactoring legacy code to a modern stack and migrating from Cordova to native Kotlin/Swift.
▹Built new features, reviewed code from other team members, and led R&D initiatives.
▹Defined and set up CI/CD pipelines for the mobile apps.
▹Enhanced the mobile library distribution by migrating from local packages to Azure Artifacts.

KotlinSwiftAndroidiOSCordovaCI/CDAzure Artifacts

03/2022 — 04/2023

Android Developer @ Whydah

Vietnam

▹Built the Raramuri running app from scratch — a fitness app that enhances the running experience by tracking Ambassadors along their journeys and running daily and weekly challenges with prizes.
▹Integrated brand partnerships (e.g., Skechers) into reward campaigns.

KotlinJetpack ComposeAndroid

05/2019 — 03/2022

Middle Android Developer @ Applied Mesh Pte Ltd

Singapore

▹Built getKaki, an e-commerce app for the Singapore market, using Kotlin and Clean Architecture.

KotlinClean ArchitectureAndroid

06/2018 — 04/2019

Junior Android Developer @ EdgeWorks German R&D Software Ltd.

Vietnam

▹Built Mobijuce, a power-bank rental app for the Hong Kong market — users scan a QR code to rent a power bank and are billed based on rental duration.
▹Developed the Android app using Kotlin and the Model-View-Presenter (MVP) architecture.

KotlinMVPAndroid

11/2016 — 05/2018

Android Developer @ HBB Solutions

Vietnam

▹Built an on-demand app connecting homeowners and maids (Uber-like) — integrated Google Maps API with GPS-based search, online payment, and push notifications.
▹Developed real-time chat with Socket.IO for a school–parent communication app.
▹Researched emerging technologies including WebRTC (video call), RTMP (live streaming), and XMPP chat; set up the company's Android internship program.

AndroidRxJavaFirebaseSocket.IORetrofitGoogle Maps API

04.