🚀 Senior Software Engineer (Mobile) | Android Specialist | Tech / Team Lead

What started as curiosity for mobile apps turned into a 8+ year journey of building Android experiences used by thousands across fintech, e-commerce, IoT, and consumer platforms.

I specialize in Android development with Java & Kotlin, modern Jetpack architecture, and clean, scalable system design. I enjoy turning complex, real-world problems into elegant architectures and intuitive user experiences.

Alongside engineering, I’m deeply interested in startups, product innovation, and tech-driven solutions that improve life and business. I’ve led features, mentored developers, and guided teams of up to 5 engineers on multiple projects.

• Android (Java, Kotlin)
• Jetpack (Compose, ViewModel, Navigation, Room)
• MVVM & Clean Architecture
• Coroutines & asynchronous programming
• Firebase (Auth, FCM, Analytics, Crashlytics)
• POS & Hardware Integration (AIDL)
• REST / JSON / Shopify integrations
• Performance optimization & legacy refactoring

Oct, 2019 – Feb, 2026

• Building fintech & payment platforms with real-world scale
• Worked on wallets, QR payments, POS integration, cash management systems
• Led feature development and mentored teams of up to 5 developers
• Designed and improved clean, modular Android architectures
• Hands-on with Kotlin, Jetpack Compose, Clean Architecture, AIDL, hardware integration

Key Projects:
Lov.Cash · Smart Safe · Klik.Klak

Sep, 2017 – Nov, 2018

• Built and maintained e-commerce, restaurant, and marketplace apps
• Developed customer apps + manager/admin apps
• Integrated payment gateways, Firebase (FCM), and POS printers
• Collaborated closely with backend & product teams

Key Projects:
Sam’s Coffee · Facilici · Honest Greens · Cera CSP

Aug, 2016 – Sep, 2017

• Developed Android apps across social, utility, and productivity domains
• Worked extensively with Java, XML, SQLite, JSON
• Built apps involving OCR, PDF generation, image-based analysis
• Delivered multiple apps as a solo developer

Key Projects:
Rockaloo, Photo Notes · OSR GAI · Watch Me · Engage

• Fintech & Digital Payments
• E-commerce & Marketplaces
• IoT & Hardware-Integrated Systems
• Food & Restaurant Tech
• Agriculture & Image-based Analysis
• Advertising & Kiosk Platforms
• Social & Communication Apps
• Productivity & Utility Tools

A modern digital payment ecosystem supporting personal users, businesses, and agents, with cashback, marketplace, POS integration, and blockchain-backed infrastructure.

Tech: Kotlin, Jetpack Compose, Clean Architecture, POS integration, Shopify
Role: Developer | Feature ownership, architecture contribution
Team Size: 3

An Android application connected to a Smart Safe / ATM-like machine allowing users to deposit physical cash and receive digital balance in wallet apps.

Tech: Kotlin, Jetpack Compose, MVVM, AIDL, POS integration
Role: Developer | Core logic & UI
Team Size: 2

A shopping platform built for Zimbabwe, integrating suppliers, collections, products, and POS-based payments.

Tech: Java, XML, AIDL, Shopify, POS integration
Role: Sole Android Developer
Team Size: 1

Customer ordering app with online payments, plus a Manager app to receive orders and print receipts via POS machines.

Tech: Java, XML, FCM, Payment Gateway
Role: Developer
Team Size: 2

An app for farmers and agronomists to determine crop Green Area Index using photographs — niche domain with real-world impact.

Tech: Java, XML, Image processing
Role: Sole Android Developer
Team Size: 1

A note-taking app that captures images, extracts text using OCR, and converts notes into PDFs.

Tech: Java, XML, SQLite, OCR, Tesseract
Role: Sole Android Developer
Team Size: 1

• Led feature development across multiple projects
• Mentored and guided teams of up to 5 developers
• Acted as bridge between product, backend, and mobile teams
• Improved legacy codebases through architectural refactoring

• Active Stack Overflow contributor in the past
• Strong believer in continuous learning & experimentation
• Currently exploring Flutter & cross-platform architecture

• LinkedIn: https://www.linkedin.com/in/arzzz/
• GitHub: https://github.com/Arzz
• Stack Overflow: https://stackoverflow.com/users/5157421/arjun-vyas

If you want to collaborate, discuss ideas, or just say hi — I’m always open to meaningful conversations 🚀