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Gabriel G.

@GaGozg

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Software Engineer

$55 USD / Hour

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Croatia (2:49 AM)

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Joined on October 11, 2009

$55 USD / Hour

・

I'm a fractional CTO and hands-on engineer with 12+ years shipping Android, Rust and full-stack products — from a streaming app with 10M+ users (HBO GO / Max) to a P2P-synced note app built on a Rust core (Recall). I set the technical strategy, then write the code to prove it, and lead by shipping. Recent work spans Android + Kotlin, Rust, Jetpack Compose, and AI-assisted engineering with Claude and Gemini.

Verifications

Freelancer Java Developers Croatia
See all Java Developers in Croatia

Portfolio

Portfolio

13982381
Built Voyage, a YNAB-style household-finance OS with a calm, luxury UI - buckets with income-share splits, an automated buffer and FIRE tracking, multi-currency EUR/RSD, plus a local-first ML transaction categorizer. Web and native SwiftUI over a PostgreSQL backend baked into the app image; imported about 5,630 real transactions.

Voyage - Household Finance OS

10996709
The client had an immediate need for revamping the app which has a basic functionality but a lot of legacy code and after the Discovery phase of the Geolocation Wristband, they liked my work and hired me on this one too In charge of Code Review, bug fixing & and updating the code which includes converting Java files to Kotlin, adding the MVVM architecture to the original no-architecture and following all the best practices Helped improve development processes like staging and production environment, instructions for onboarding the future Android developers, CI/CD pipeline and release cycle https://www.safeinhome.com/

OneTouch

10996702
Worked with Plume - on an enterprise app called Plume Workpass Worked as a part of 20 Android people team and more than 100 people team that worked on this app First project with a Clean architecture https://www.plume.com/resources/introducing-workpass/

Plume Workpass

10996697
I was in charge of implementing a screen reader accessibility feature from scratch. Working there was one of my best work experiences. Successfully finished adding the accessibility feature to every screen. https://onfido.com/

Onfido

10996690
Part of the 5-people team that Toptal provides for the client. 1 Senior and 1 Junior Delivery Manager, Project Manager and UX/UI designer. Communicating with 2 POs, 1 DevOps, 2 technical support persons and leading another Android Senior Engineer on daily basis I’m the go-to tech person for this project, Android Architect/Lead Engineer In charge of research and development and taking critical project risks. So far researched the market and watches by requirements from the client setup Epics and Stories for the MVP in collaboration with the team built a roadmap for delivery wrote the setup guide for the app to work properly in the KIOSK mode on the smartwatch Built native calls functionality with custom UI (not VoIP) Checkout client's page: https://www.safeinhome.com/

Geolocation Wearable

10996656
I was in charge of updating features in the Daily Fantasy part of the app while also updating the code from Java to Kotlin and from a variety of architectural patterns to MVVM with RxJava. Also, built guides for the refactoring for other developers to follow Built my own tasks according to product directions Agile Kanban with daily SCRUM meetings Helped update different developer guides, JIRA ticket templates, helped in optimizing processes inside the team Technologies used: Kotlin, Java, RxJava, Dagger, JIRA, Screwdriver, code with different architectures MVVM, MVP & MVC Checkout the app on Google Play https://play.google.com/store/apps/details?id=com.yahoo.mobile.client.android.fantasyfootball&hl=en&gl=US

Yahoo Daily Fantasy

13982381
Built Voyage, a YNAB-style household-finance OS with a calm, luxury UI - buckets with income-share splits, an automated buffer and FIRE tracking, multi-currency EUR/RSD, plus a local-first ML transaction categorizer. Web and native SwiftUI over a PostgreSQL backend baked into the app image; imported about 5,630 real transactions.

Voyage - Household Finance OS

10996709
The client had an immediate need for revamping the app which has a basic functionality but a lot of legacy code and after the Discovery phase of the Geolocation Wristband, they liked my work and hired me on this one too In charge of Code Review, bug fixing & and updating the code which includes converting Java files to Kotlin, adding the MVVM architecture to the original no-architecture and following all the best practices Helped improve development processes like staging and production environment, instructions for onboarding the future Android developers, CI/CD pipeline and release cycle https://www.safeinhome.com/

OneTouch

10996702
Worked with Plume - on an enterprise app called Plume Workpass Worked as a part of 20 Android people team and more than 100 people team that worked on this app First project with a Clean architecture https://www.plume.com/resources/introducing-workpass/

Plume Workpass

10996697
I was in charge of implementing a screen reader accessibility feature from scratch. Working there was one of my best work experiences. Successfully finished adding the accessibility feature to every screen. https://onfido.com/

Onfido

10996690
Part of the 5-people team that Toptal provides for the client. 1 Senior and 1 Junior Delivery Manager, Project Manager and UX/UI designer. Communicating with 2 POs, 1 DevOps, 2 technical support persons and leading another Android Senior Engineer on daily basis I’m the go-to tech person for this project, Android Architect/Lead Engineer In charge of research and development and taking critical project risks. So far researched the market and watches by requirements from the client setup Epics and Stories for the MVP in collaboration with the team built a roadmap for delivery wrote the setup guide for the app to work properly in the KIOSK mode on the smartwatch Built native calls functionality with custom UI (not VoIP) Checkout client's page: https://www.safeinhome.com/

Geolocation Wearable

10996656
I was in charge of updating features in the Daily Fantasy part of the app while also updating the code from Java to Kotlin and from a variety of architectural patterns to MVVM with RxJava. Also, built guides for the refactoring for other developers to follow Built my own tasks according to product directions Agile Kanban with daily SCRUM meetings Helped update different developer guides, JIRA ticket templates, helped in optimizing processes inside the team Technologies used: Kotlin, Java, RxJava, Dagger, JIRA, Screwdriver, code with different architectures MVVM, MVP & MVC Checkout the app on Google Play https://play.google.com/store/apps/details?id=com.yahoo.mobile.client.android.fantasyfootball&hl=en&gl=US

Yahoo Daily Fantasy

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Experience

Android Senior Engineer

Oct, 2015 - Present

•

10 years, 9 months

Digital Media Experience

Oct, 2015 - Present

•

10 years, 9 months

I am one of the 3 Android developers working in a 15+ team. We have developed and now are maintaining a multi-million user app. I'm responsible for solving any task that comes my way.

Oct, 2015 - Present

•

10 years, 9 months

CEO, Founder & Android Expert

Jun, 2014 - Present

•

12 years, 1 month

Epigraph Android Consultants

Jun, 2014 - Present

•

12 years, 1 month

All my expertise in a single role. I am responsible for everyone and everything. We translate businesses into useful Android software led by user focused engineering. Dedicated development of Android native applications is the main service at Epigraph. Don't hesitate to contact me if you have a need for a mobile development expertise, because I can help.

Jun, 2014 - Present

•

12 years, 1 month

Android Freelancer

Jan, 2014 - Sep, 2015

•

1 year, 8 months

UpWork

Jan, 2014 - Sep, 2015

•

1 year, 8 months

Worked on 15+ projects where I was reviewing code, giving suggestions and plugging into existing code to make revisions.

Jan, 2014 - Sep, 2015

•

1 year, 8 months

Publications

From Android Beginner to a 5-Star Freelancer

Droidcon & Netokracija

The article is talking about my speech at Zagreb Drodicon conference 2015. http://www.netokracija.com/freelance-developer-reputacija-droidcon-102500

Certifications

US English - Level 1

US English

Freelancer logo US (International) / English
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