Hi, I'm Umar, an experienced full-stack mobile app Developer from Indonesia.

as an internationally certified developer with 2+ years of experience, I have developed cross-platform solutions and integrated to various backend models.

LinkedIn - PlayStore - Accredible - Credly - Github - Gmail - WhatsApp

What I mean with internationally certified developer:

Claiming as an expert with only words is not enough, so I come confidently with these international well-known certificates to talk more about me.
To make sure they are verified, I attached my certificates to two most credible platform on the world, Accredible and Credly (or you can just google them):

Accredible

Credly

What I mean with 2+ years of experience:

Roled mainly as Flutter mobile app developer, I have various projects on cross-platform technologies such as Flutter, MAUI, and even React Native. I'm also capable of developing back-end using .NET, SQL server, Firebase, Python, and Laravel.

And as final touch, I published them to various platform like PlayStore, AppStore, and IIS. Here is some of them:

Dimensi Map

[PlayStore] Featuring multi-role access maps with custom company markers, with zero server cost setup.

Minamas Head Office

[AppStore] Featuring GPS-based daily presence.

Minamas Overlay Map

[IIS] Featuring non-Google offline map for lower cost, manipulated geospatial data using Python.

Vizzy by Inovasy

[PlayStore] Featuring managerial report with AI integrated.

Minamas eSPB

[IIS] Featuring GPS-based offline-first reporting app with nested forms.

Minamas Widget

[IIS] Featuring managerial reporting charts with custom home-widgets.

Where did I work previously?

Jumping into different teams and company cultures wasn’t always easy, but it helped me learn how to adjust quickly, adapt to unique environments, work with different types of people, and see things from different perspectives. While some jobs pushed me out of my comfort zone, that’s exactly where I grew the most.

here are the companies I worked on, what was my role, and what did I achieve:

Inovasy startup, sub-company of Azzam Salma Mulia Ltd.Bekasi, Mar 2025 - May 2025Role: MAUI developer, on-site contract.Achievement: PlayStore-published "Vizzy by Inovasy" (closed testing).

Minamas Plantation Ltd, SD Guthrie (Sime Darby)Jakarta, Jul 2024 - Dec 2024Role: full-stack mobile app developer, on-site internship.Achievement: IIS-published 3 internal apps, all are offline-capable. those are: "Minamas eSPB", "Minamas Widget", "Minamas Overlay Map".

Dimensi Grup Indonesia Ltd.Bekasi, Nov 2023 - Jan 2024Role: PlayStore app developer, remote freelance.Achievement: PlayStore-published "Dimensi Map".

Minamas Plantation Ltd, SD Guthrie (Sime Darby)Jakarta, Aug 2023 - Oct 2023Role: cross-platform app developer, remote freelance.Achievement: IIS and AppStore published "Minamas Head Office" (unlisted).

Lauwba Techno Indonesia Ltd.Yogyakarta, Jun 2023 - Jul 2023Role: Flutter developer, on-site internship.Achievement: developed "Mother Time Management".

What kind of technology did I use?

Before everything, to be clear, a good programmer never stick to only few technologies. Good programmers always learn something new, improve their skills, adapt fast to newer work requirements. But,

No experience is ever wasted. There for sure difference between those that already used the technology and those that are new to the board. So, I'm here just to number approximately how long I spent my time for each technology (up to July 2025), in months:

Front-end