Andrei is available for hire

Andrei Istrate

Verified Expert in Engineering

Software Developer

Location

Cluj-Napoca, Cluj County, Romania

Toptal Member Since

March 15, 2022

Andrei是一名高级移动开发人员，拥有超过六年的构建和维护强大移动应用程序的经验. 他专门从事Android开发，对目前用于Android应用程序开发的工具有着丰富的知识, including Java and Kotlin. 此外，他还拥有使用跨平台框架(如Flutter)的经验.

Authentication Mobile App Development Google Play Store User Experience (UX)User Interface (UI)Debugging Push Notifications Android Android Studio Android SDK Mobile Gradle Object-oriented Programming (OOP)Java Agile QR Code Charles

Portfolio

Globant

Java, Kotlin, Flutter, Android NDK, Android, Charles, New Relic, Jira...

Fortech SRL

Java、Kotlin、Android、Android NDK、Jenkins、持续集成(CI)、SSL...

Wolfpack Digital SRL

Java、Kotlin、Android、Android NDK、持续集成(CI)、Jira...

Experience

Android - 7 years Agile - 6 years Databases - 6 years Java - 6 years Object-oriented Programming (OOP) - 6 years Firebase - 4 years Kotlin - 4 years Jira - 4 years

Availability

Part-time

Preferred Environment

MacOS, Windows, Mobile Development

The most amazing...

...作为一名主要的Android开发人员，我领导的项目为残疾用户提供了帮助. The app is used in the train stations of London.

Work Experience

Senior Mobile Developer

2021 - 2022

Globant

Worked in a team specializing in support, performance, 通过促进和提供基于软件的解决方案，为娱乐行业的领先数字产品提供可观察性.
增强了UI/UX，并提供了多个视频流性能升级.
集成第三方视频流分析软件与多个流服务自定义组件.
解决了多个与谷歌广告相关的问题，并通过提供自定义分析解决方案降低了应用程序的崩溃率.
举办多个与跨平台移动技术(Flutter)相关的技术团队介绍讨论会.

Technologies: Java, Kotlin, Flutter, Android NDK, Android, Charles, New Relic, Jira, Confluence, Breadboarding, Firebase, ExoPlayer, RxJava 2, Dart, Test-driven Development (TDD), Integration Testing, Mobile Development, Android Studio, Unit Testing, Agile, Mobile App Development, Telecommunications, REST APIs, APIs, RxJava, Model View ViewModel (MVVM), Video Streaming, Mobile, Cross-platform, Android SDK, Gradle, Mobile Apps, Google Play Store, Coroutines, Android Jetpack, Continuous Integration (CI), Authentication, Push Notifications, User Experience (UX), User Interface (UI), Android Animations, Subscriptions, Debugging

Senior Mobile Developer

2020 - 2021

Fortech SRL

带领Android移动团队开发房地产行业领先的数字产品.
提供多种基于软件的解决方案，通过多次重构周期提高产品的整体性能并减少电池使用. 在进行主流程应用程序操作时，电池消耗总体减少了35%.
实施自定义二维码扫描解决方案，并将其与多个美国配送服务集成.
担任首席技术招聘人员，并为android相关职位进行了多次技术面试.
为军事行业的移动应用程序提供自定义SSL(安全套接字层)解决方案.
Developed a custom, offline, 在军事工业中使用Jenkins为网络限制产品的持续集成过程.

Technologies: Java、Kotlin、Android、Android NDK、Jenkins、持续集成(CI)、SSL, SSL Certificates, Jira, RxJava, Agile, Mobile Development, Android Studio, Unit Testing, Mobile App Development, Telecommunications, Figma, REST APIs, Minimum Viable Product (MVP), Education, Flutter, Cloud Firestore, APIs, Model View ViewModel (MVVM), WebSockets, Video Streaming, MySQL, Mobile, Android SDK, Gradle, Mobile Apps, Firebase, Google Play Store, QR Codes, Coroutines, Android Jetpack, Integration Testing, Test-driven Development (TDD), RxJava 2, ExoPlayer, Breadboarding, Confluence, Authentication, Push Notifications, User Experience (UX), User Interface (UI), Android Animations, Subscriptions, Debugging

Mid Mobile Developer

2018 - 2020

Wolfpack Digital SRL

作为团队领导/开发人员，构建了两个移动应用程序，作为交通行业数字产品的一部分，旨在帮助残疾用户, notifying staff to support them with train onboarding.
通过WebSockets和Firebase实时数据库进行实时客户端-服务器通信. 创建了一个自定义聊天功能，允许用户通过Mapbox分享实时位置.
开发了一个应用程序，提供了一个改进的会议记录替代方案. 该应用程序记录会议对话，并通过IBM沃森人工智能返回整个对话的完整文本.
成功将多个基于java的Android项目迁移到Kotlin，并将整个应用架构从MVP重构到MVVM.
Improved an app's UI/UX and performance; also upgraded audio file data transfers by converting the audio files from an mp3 format to Ogg using FFmpeg.

Technologies: Java、Kotlin、Android、Android NDK、持续集成(CI)、Jira, Mobile Development, Android Studio, Unit Testing, Agile, Mobile App Development, SMS, Telecommunications, Figma, REST APIs, Minimum Viable Product (MVP), Education, Cloud Firestore, APIs, RxJava, Model View ViewModel (MVVM), WebSockets, MySQL, Mobile, Android SDK, Gradle, Mobile Apps, Spreadsheets, Microsoft Excel, Firebase, Google Play Store, QR Codes, Android Jetpack, Integration Testing, RxJava 2, Confluence, Authentication, Push Notifications, User Experience (UX), User Interface (UI), Android Animations, Subscriptions, Debugging

Mid Mobile Developer

2017 - 2018

Nordlogic Software

为第三方摄像头控制器应用提供软件解决方案. Applied multiple video editing techniques through FFmpeg libraries.
构建一个应用程序，该应用程序通过与Facebook API的通信，根据用户的位置和偏好显示所有社交事件. The app architecture was an MVP.
为一位著名的好莱坞化妆师创建了一个演示应用程序. 提供自定义视图实现，类似于iOS原生UI组件. 整合应用与Spotify API，以及第三方支付与Two Tap.

Technologies: Java, Android, Android NDK, Embedded Java, Mobile Development, Android Studio, Unit Testing, Agile, Mobile App Development, SMS, REST APIs, Minimum Viable Product (MVP), APIs, Model View ViewModel (MVVM), Bluetooth, MySQL, Mobile, Smart Devices, Android SDK, Mobile Apps, Microsoft Excel, Google Play Store, Authentication, User Experience (UX), User Interface (UI), Android Animations, Debugging

Junior Mobile Developer

2016 - 2017

ServUsTECH

Developed a mobile business management application using REST APIs, Android SDK components, and custom views.
提供软件解决方案，通过最小化多个应用程序的内存泄漏和电池使用来改善UI/UX和提高应用程序性能.
使用地理定位、地图API和REST API开发社交媒体移动应用程序. Refactored app architecture and improved UI/UX.

Technologies: Java, Android, Mobile Development, Android Studio, Mobile App Development, REST APIs, APIs, Bluetooth, Mobile, Android SDK, Mobile Apps, Microsoft Excel, Google Play Store, User Experience (UX), User Interface (UI), Debugging

Experience

Capturi

http://en.capturi.com/

Capturi是一个基于java的Android应用程序，通过提供一个改进的替代记录来提高会议性能. 该应用程序将记录会议对话，并通过IBM的沃森人工智能返回包含整个对话的完整文本. I worked on improving application performance, fixing bugs, and handling result transcription real-time updates.

Cinefapp

http://play.google.com/store/apps/details?id=com.movie.cinefapp.cinef_app&gl=RO

An Android-based app for movie-related information. 这款应用程序可以保存用户想看的所有电影，并列出他们最喜欢的电影. 用户还可以随时了解即将上映的电影，并拥有最佳电影的列表.

这是一个个人项目，我负责开发、执行和设计的所有层面.

Sama | Spyfall

http://play.google.com/store/apps/details?id=com.spyfall.sama

A cross-platform game application developed in Flutter. 这款应用是让聚会、朋友和家庭聚会变得有趣的好方法.
这是一个个人项目，我独自完成了产品的所有阶段.

Skills

Languages

Java, Kotlin, Dart, C++

Frameworks

Android SDK, Flutter

Tools

Android Studio, Android Jetpack, Gradle, Android NDK, Jira, Jenkins, Charles, Confluence, ExoPlayer, Figma, Spreadsheets, MATLAB, Microsoft Excel

Paradigms

Class-based OOP, Object-oriented Programming (OOP), Agile, Mobile Development, Clean Architecture, Model View ViewModel (MVVM), Continuous Integration (CI), Test-driven Development (TDD), Unit Testing, Cross-platform

Platforms

Android, Mobile, Arduino, Firebase, MacOS, Windows, New Relic

Storage

Cloud Firestore, Databases, MySQL

Other

Push Notifications, Authentication, Mobile App Development, Minimum Viable Product (MVP), APIs, Mobile Apps, Google Play Store, User Experience (UX), User Interface (UI), Debugging, SSL, SSL Certificates, Breadboarding, Integration Testing, Coroutines, SMS, WebSockets, Bluetooth, Smart Devices, Internet of Things (IoT), QR Codes, Android Animations, Subscriptions, Electrical Engineering, Engineering, Data Structures, Embedded Java, Education, Video Streaming, Controls

Libraries/APIs

RxJava, RxJava 2, REST APIs

Industry Expertise

Telecommunications

Education

2012 - 2016

Bachelor's Degree in Mathematics and Computer Science

Technical University of Cluj Napoca - Cluj-Napoca, Romania

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