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Jozef – Flutter, Objective C, Dart, experts in Lemon.io

Jozef

From Slovakia (GMT+2)

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Mobile DeveloperSenior
Hire developer
23 years of commercial experience
Environmental services
Management
Networking
Retail
Social media
Telecommunications
Mobile apps
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Jozef – Flutter, Objective C, Dart

Jozef is a mature and skilled Mobile Developer experienced in architecting apps. He worked with different technologies and even established his own mobile development company. Throughout the 20+ years of experience, Jozef kept his attitude of a constant learner. Cheerful and easygoing, he will be a valuable addition to any team!

Main technologies
Flutter
4 years
Objective C
3 years
Dart
4 years
iOS
10 years
Additional skills
Swift
Kotlin
Java
Android
C++
REST API
Figma
CI/CD
SQLite
Node.js
Redis
Firebase
.NET
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Flutter Developer / Software Architect / CI/CD Manager
Jan 2019 - Jun 20223 years 5 months
Project Overview

This is a loyalty cards platform in a set of 3 Flutter applications, which are:

  1. A shopping assistant app for end-users.
  2. Point of sale for the assistant - an app designed for employees of Karty's clients.
  3. Dashboard for the assistant - management app for clients (small businesses such as restaurants, gyms, grocery markets, libraries, and e-shops. This app is also available as a web application, made with Flutter web app development.
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Responsibilities:
  • Developed 3 Flutter apps;
  • Used native Flutter channels for document scanning and barcode scanning;
  • Сreated fully automated processes for 3 environments with CI/CD (GitLab);
  • Achieved Honorable Mention in Huawei Apps Up 2021 Europe.
Project Tech stack:
Flutter
iOS
PostgreSQL
Redis
Node.js
SQLite
Android
ParseSDK
REST API
Barcode scanner
Flutter Developer
Aug 2021 - Feb 20226 months
Project Overview

This app is a social networking app for neighborhoods; the main focus is improving and renewing digital data about local businesses: restaurants, discos, bars, small businesses, events, attractions, and services for T-Mobile MMS clients.

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Responsibilities:
  • Implemented pixel-perfect graphics;
  • Created dark & light mode for the app;
  • Created Mockups for app's data;
  • Managed official documentation for BLoC state library;
  • Kept local SQLite database synced to backends by using API.
Project Tech stack:
Flutter
REST API
Figma
iOS
Android
SQLite
Git
Flutter Developer
Aug 2021 - Dec 20214 months
Project Overview

Internal application for employee eco motivation. It includes a CO2 emission tracker and calculator based on tracked GPS location.

Skeleton
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Responsibilities:
  • Implemented pixel-perfect graphics;
  • Used BLoC as state management for a better-organized code;
  • Implemented identification of potential location access logic through background location services;
  • Facilitated APIs with native Flutter channels.
Project Tech stack:
Flutter
REST API
iOS
Android
Figma
iOS Developer / CI/CD Manager
Aug 2020 - Aug 20211 year
Project Overview

This is a Slovakian digital operator. It is a self-care app through which the user can order a SIM card, activate the program, view consumption and payments, or connect to the Mobile Network, which covers more than 97% of the population of Slovakia with a 4G LTE signal.

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Responsibilities:
  • Created a brand new application from scratch;
  • Worked with 4 environments (flavors/schemes);
  • Implemented an advanced face recognition and document scanning;
  • Worked with a complex user onboarding;
  • Was in charge of writing unit tests;
  • Managed CI/CD with the GitLab.
Project Tech stack:
iOS
Swift
Git
SQLite
REST API
Firebase
iOS Developer / CI/CD Manager
Dec 2020 - Apr 20214 months
Project Overview

This is a mobile service that has been in since 2009 in the Slovakia market. Jozef worked under the Customer self-care app. This is a mobile application where customers can have an instant overview of their telephone numbers, consumption, and special offers with the ability to activate packages or top up their credit cards.

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Responsibilities:
  • Created a new application based on the old one;
  • Implemented new features for 4 environments;
  • Developed SwiftUI widgets;
  • Was in charge of code reviews.
Project Tech stack:
iOS
Swift
SwiftUI

Education

2001
Faculty of Command Control and Communications, Specialization of Information Technologies
Engineer (diploma obtained)

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