Flagship
SaveBox: Video & Status Saver
Problem: expensive mobile data and scattered status/video saving. Solution: HD downloader and story saver — private, secure and offline-first.
Google PlayOffline-first
Partha Roy
Android Engineer · Full Stack Web Developer · Founder, Data Matrix Lab
Published on Google Play · BSc in CSE, NWU Khulna · Sikder International IT Hub
partharoypc@gmail.com · +880 1760-805545 · Khulna, Bangladesh
Open for work · I build Android Apps
About Me
Software Engineer who ships real products
I'm Partha Roy — a Software Engineer and founder of Data Matrix Lab, published on Google Play. With a BSc in CSE and my current role at Sikder International IT Hub, I build Android apps and full-stack web products end to end — from clean architecture to release.
I care about systems that are efficient, scalable and reliable, and about data-driven features that solve practical problems — from offline-first mobile apps to AI-assisted analytics. My future plan is to pursue an MSc to deepen my theoretical foundations and explore research.
Java · Kotlin · MVVMPHP (Laravel) · JavaScriptREST APIs · Room · FirebasePython · Data Analytics
20+Android apps built
50+Unit tests written
4+Years experience
📱 Mobile Systems
20+ Android apps with MVVM + Repository patterns — Room offline-first, FCM engagement, App Open/Native ads.
🌐 Full-Stack Web
Responsive HTML5/CSS3/JS + Redux/PHP apps — Figma to pixel-perfect UI, 50+ unit tests, reusable components.
📊 AI & Data
Diabetes prediction (Logistic Regression, SVM), COVID-19 analysis, Firebase Analytics — data into decisions.
Evidence · Google Play
Selected Apps
Developer account: Data Matrix Lab — a curated set of shipped products, each solving a concrete problem.
Promptera: AI Photo Prompts
Problem: prompt engineering is hard on mobile. Solution: curated + generative photo prompts, tuned for on-device use.
Play · AIGenerative AI
FitByte: AI Food Scanner
Problem: nutrition tracking has too much friction. Solution: scan food for instant estimates with lightweight on-device vision.
Play · AI HealthVision
Network Analyzer: WiFi Scanner
Problem: opaque home and public WiFi on low-resource networks. Solution: clear diagnostics and scanner in one tool.
Play · NetworksMeasurement
Boichai: বইচাই Bangla Books
Problem: Bangla book discovery is fragmented. Solution: dedicated Bangla search and discovery experience.
Play · BanglaIR & NLP
Book Bharat — Online Bookstore
Scope: 100+ RESTful APIs for inventory, product tracking and secure payments; multi-category browsing, COD and order tracking across India.
Play · ShoppingREST APIs
BrightAcademy Exam Preparation
Scope: end-to-end bilingual (Bengali + English) test-prep build — mock tests, video courses, Firebase Analytics and real-time notifications.
Play · Ed-techFirebaseTechnical Projects
Problem-solving builds
GitHub builds behind the Play work — practical, reproducible, documented.
ML
Diabetes Prediction with ML
Problem: early diabetes risk is easy to miss. Solution: Logistic Regression and SVM baselines on Kaggle symptom data, evaluated with sklearn metrics.
Open SourcePythonscikit-learnCV
COVID-19 Data Analysis
Problem: raw case counts mislead without context. Solution: time-series exploration and visualization that surface real trends.
Open SourceData AnalysisVisualizationAD
SmartAds & AdGlide — Android Ad Libraries
Problem: ad SDKs leak lifecycles and bloat apps. Solution: lifecycle-safe wrappers for Banner, Interstitial, Rewarded, App Open and Native ads.
Open SourceAndroidJavaJourney
Experience & Education
DM
Founder · Current
Founder & Android Engineer — Data Matrix Lab
📍 Google Play · datamatrixlab.com
- Ship and maintain Play apps end to end: spec → build → release → analytics → iteration
- Own the full loop with real users — crashes triaged, feedback folded back in
AndroidPlay ConsoleProduct
SI
01/08/2022 — Present
Software Engineer — Sikder International IT Hub
📍 Kolkata, India
- System architecture: 20+ Android apps with MVVM + Repository patterns
- Performance: engineered RESTful APIs, −25% response time, critical-bug stability fixes
- Data systems: Room offline-first persistence synced with REST APIs
- Engagement: Firebase Cloud Messaging push, +30% user engagement
- UI/UX: Figma prototypes → pixel-perfect responsive interfaces; Agile Scrum
JavaKotlinMVVMRoomFirebaseFigma
CM
01/11/2021 — 31/07/2022 · Khulna, Bangladesh
Junior Software Engineer — Codemen
📍 Khulna, Bangladesh
- Full-stack responsive web apps: HTML5, CSS3, JavaScript, Redux, PHP
- Quality: 50+ unit tests; reusable front-end & server-side components
HTML5JavaScriptReduxPHP
NW
19/04/2016 — 16/11/2020 · GPA 3.29/4.00
Bachelor of Engineering in CSE — North Western University, Khulna
- Key coursework: Software Engineering, Data Structures, OOP, Artificial Intelligence
CSEAISystems
KP
2012 — 2014
HSC (Science) — Khulna Public College
- GPA 4.70 out of 5.00
Science
CH
2010 — 2012
SSC (Science) — Chaderhat Secondary School, Bagerhat
- GPA 4.88 out of 5.00
Science
At a Glance
Skills & Focus
💻 Languages & Architecture
Languages
JavaKotlinPHP (Laravel)JavaScript (ES6+)PythonC++SQL
Architecture
MVVMMVPRepository
Human
Bangla (native)English
📱 Mobile & Web Platforms
Mobile
Android StudioRoomFirebaseApp Open/Native Ads
Web & APIs
HTML5CSS3RESTful APIsJSON
🛠 Tools & Delivery
Tools
Git & GitHubPostmanFigmaPlay ConsoleRedux
Delivery
Agile ScrumPeer Reviews50+ Unit TestsAnalytics-Driven
Collaboration
Have an app idea? Let's build it right.
From first sketch to Play Store release — clean architecture, offline-first builds and store-ready polish.
Android AppsFull-Stack WebPlay Release & Growth
Based in Khulna, working worldwide · replies within 24 hours
Contact
Get in touch
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