Mobile Developer

Jorge Díaz


Need a skilled mobile developer to bring your app ideas to life? Look no further! I'm a software engineer specializing in building exceptional mobile apps.

3+
Cross-platform apps done

5+
Android native apps done

5+
Companies worked with

1.5M+
Users reached

About Me

Unleash Your Creativity

A mobile tech lead based in Colombia, with 6+ years of experience

Developing Android native applications using Java and Kotlin and Flutter cross-platform applications using Dart. Worked for companies ranked among the top 100 Colombian startups by Forbes.

Expertise

My Skills

Every Day is a New Challenge

I've built many different kinds of projects, yet, at the end of the day, I'm not picky about the tech stack I'm using, as long as I'm building something cool!

Technical skills

These are the skills I want to highlight. However, they’re not my only ones.

Master
Expert
Advanced
Intermediate
Novice

My Services

What can I do best?

Mobile Applications

High-performing Android native and Flutter mobile apps built from scratch.

UX Design

Expert user interfaces with a focus on A/B testing and accessibility.

App Performance Analyses

Optimizing app efficiency for network, memory, CPU, and energy usage.

Leading Tech Teams

Leveraging team strengths to deliver top-quality mobile apps within budget.

Portfolio

My Creative Work

Employment & Education

My Experience Journey

2021 - 2022 Mobile Tech Lead / Celerik

Led the end-to-end development of Android native and two Flutter mobile applications, overseeing a team of three developers. Provided technical guidance, collaborated with clients from different countries to grasp requirements, estimate budgets, plan tasks and deliver progress presentations.

2016 - 2022BA Degree / Sergio Arboleda university

Got a Bachelor’s Degree in Systems and Telecommunications Engineering.

2020 - 2021Cloud Software Engineer / Sergio Arboleda University

Designed a cloud architecture for AI systems and implemented REST web services.

2019 - 2020Android Developer Engineer / Bold SAS

Led an Android Mobile team of 2 members as long as provided support for the app development.

2017 - 2019Project / Generador de Horarios

The university semester schedule is now created 95% faster (50 minutes less, on average) through this web platform. Currently, Generador de Horarios is implemented at Sergio Arboleda University, where more than 5,000 students are benefited by this tool.

2023 - PresentSenior Mobile Engineer / Parser

Implemented add-to-app feature to integrate Flutter code as a module to both Android and iOS native apps and successfully enabled the coexistence of native and Flutter screens while addressing cross-platform navigation challenges.

2022 Achievement / Honorable Mention from the 2022 ICPC Colombia

My team and I were among the top competitive programmers in Colombia, earning a spot in the 2023 ICPC Upcoming Regionals thanks to our teamwork, algorithms, and data structures skills.

2020 - 2021Android Software Engineer / Muni Tienda

Provided support for the app development and defined the initial approaches to address business requirements from a technical perspective.

2020Project / Creation of an Android development course

Created an Android course where I share all my mobile development knowledge with people, making it interesting and adding important focuses like competitive programming practices, clean code and techniques to develop Android applications faster and better.

2018 - 2019Android Developer Engineer / Transport Systems SAS

Provided support for the app development and implemented a clustering algorithm to support indoor location to detect user accurate location in malls.

2023 - PresentSenior Android Developer / Parser

Migrating an Android fintech app to Flutter codebase.

2021 - 2022 Mobile Tech Lead / Celerik

Development of 1 Android native and 2 Flutter cross-platform apps from scratch.

2022 Achievement / Honorable Mention from the 2022 ICPC Colombia

My team and I were among the top competitive programmers in Colombia, earning a spot in the 2023 ICPC Upcoming Regionals thanks to our teamwork, algorithms, and data structures skills.

2016 - 2022BA Degree / Sergio Arboleda university

Got a Bachelor’s Degree in Systems and Telecommunications Engineering.

2020 - 2021Android Software Engineer / Muni Tienda

Provided support for the app development and defined the initial approaches to address business requirements from a technical perspective.

2020 - 2021Cloud Software Engineer / Sergio Arboleda University

Designed a cloud architecture for AI systems and implemented REST web services.

2020Project / Creation of an Android development course

Created an Android course where I share all my mobile development knowledge with people, making it interesting and adding important focuses like competitive programming practices, clean code and techniques to develop Android applications faster and better.

2019 - 2020Android Developer Engineer / Bold SAS

Led an Android Mobile team of 2 members as long as provided support for the app development.

2018 - 2019Android Developer Engineer / Transport Systems SAS

Provided support for the app development and implemented a clustering algorithm to support indoor location to detect user accurate location in malls.

2017 - 2019Project / Generador de Horarios

The university semester schedule is now created 95% faster (50 minutes less, on average) through this web platform. Currently, Generador de Horarios is implemented at Sergio Arboleda University, where more than 5,000 students are benefited by this tool.

Happy Clients

Companies I have worked with

Mobile Developer

Do you have a project and want to connect with me? Fill out the form, and I’ll get back to you!

© JorgeDiaz 2020 | All Rights Reserved

Looking to contact me for further projects?

Drop me a line. I look forward to hearing from you!

© Jorge Díaz 2023 | All Rights Reserved

Flutter, Dart, BLoC, Clean Architecture, WorkManager

Argonovo

A cross-platform mobile application (Android & iOS) for taking and sharing photos instantly with those around you. For instance, when you are at a wedding, concert, or a good party and want all the photos.

My Role

Python, Flask, Docker, Kubernetes, Azure Pipelines, ServiceBus, SQL Databases...

Consig

a web platform for the competition regulator (SIC) in Colombia, to detect plagiarism in brand logos through AI images recognition, phonetic and syntactic analyses.

My Role

Android, Kotlin, MVVM, Clean Architecture, Jetpack Libraries, RxJava, GPS, Maps SDK, Location Manager API

MUNI

Android app for providing on-demand courier service that purchases, picks up, and delivers products ordered through its mobile app. This platform is similar to Rappi or UberEats.

My Role

Android, Java, Kotlin, MVVM, Clean Architecture, Jetpack Libraries, RxJava, BLE sensor

BOLD

an Android mobile application that, together with a payment terminal, processes bank transactions from credit cards with signature and debit and prepaid cards with PIN. This app also allows merchants to view their business account statement, the description of their monetary transactions and reverse/void payments.

My Role

Android, Java, MVP, Clean Architecture, GraphQL, RxJava, GPS, Maps SDK, BLE and WIFI sensors

Offrie

The app resorts to geolocation, maps, and GPS services to recommend products according to user preferences and debit and credit cards associated.

My Role