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iOS & Mobile Developer · Athens, Greece

Achilleas
Tzenetopoulos

Building exceptional mobile experiences from concept to App Store. Full-stack capable — iOS, Android & Node.js backend.

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About me

Crafting apps
that matter

I'm a Mobile Software Developer with 3+ years of professional experience specialising in iOS and Android native development. Based in Athens, Greece, I build clean, well-architected apps that users love.

My expertise spans the full stack — from Swift and Kotlin on mobile to backend services with Node.js. I apply MVVM architecture to keep every codebase maintainable, testable, and scalable.

I hold a professional iOS & Swift development certification alongside a Computer Science degree from the University of Piraeus.

3+
Years Experience
10+
Apps Shipped
iOS
Primary Platform
Full
Stack Capable
What I do

Technical
Expertise

iOS Development
Polished iOS apps with Swift and UIKit/SwiftUI. Core Bluetooth, notifications, App Store deployment.
SwiftSwiftUIUIKitCore BluetoothXcode
Android Development
Native Android apps with Kotlin and modern architecture patterns.
KotlinJetpack ComposeCoroutines
Backend & APIs
Robust backend services with Node.js. RESTful APIs, database design, and server-side logic.
Node.jsREST APIsJavaScript
Architecture
MVVM and clean architecture patterns. Testable, readable, maintainable code at scale.
MVVMClean ArchUnit Testing
IoT & Bluetooth
Specialised Core Bluetooth development for IoT monitoring and connected hardware.
Core BluetoothBLEIoT
Payments & SDK
Production-ready iOS SDKs for in-person payments via Stripe Connect and Terminal.
StripeiOS SDKIn-Person Payments
Work

Selected
Projects

01
iOS App · Daily Wellness

DQA — Daily Question App

A thoughtful wellness app that presents one meaningful question per day for personal reflection and journaling. Privacy-first, minimalist design with a freemium model and daily notifications.

💭
Daily Question
02
iOS App · Productivity

Diem — Daily Planner

An intention-first daily planner. Set your daily intention, focus on priorities, manage time blocks, and close the day with an evening reflection.

03
iOS SDK · Fintech

In-Person Payment SDK

A production-ready iOS SDK enabling in-person payment acceptance via Stripe Connect and Terminal. Built for seamless third-party integration.

Career

Experience &
Education

2022 — Present
Mobile Software Developer
i-ALERT Monitoring Solution

Developing iOS applications for industrial IoT monitoring, specialising in Core Bluetooth for hardware-connected mobile solutions.

Certification
iOS & Swift Development
Professional Certification

Completed a comprehensive iOS and Swift course, deepening expertise in Apple frameworks and best practices.

Degree
Computer Science
University of Piraeus

Bachelor's degree providing a strong theoretical and practical foundation in software engineering.

Contact

Let's build
something great

Have a project in mind? Whether it's a new iOS app, a full-stack product, or a technical consultation — I'd love to hear about it.