Gradoid DOO

Founded an app studio with my wife Biljana.

We design, build & grow mobile apps for ourselves and the clients.

Our own apps:

1. Guess the Drawing - 10k users drawing game monetized with ads
2. Mind - bite-sized spirituality lessons app with 217K+ users and $108K+ revenue
3. Delicious - social sharing recipes app
4. Košnica - services marketplace app for web and mobile

Founder

Toptal

Built mobile apps for 10 clients via Toptal platform:

1. Android (Kotlin) Engineer for adult card game (2019)
2. Flutter Engineer for healthcare app (2019)
3. Flutter Tech Lead for FinTech app (2020)
4. Flutter Tech Lead for security app (2020)
5. Flutter Tech Lead for live streaming app (2020 - 2021)
6. Flutter Tech Lead for store management app (2022)
7. Flutter Tech Lead for FinTech app (2023)
8. Flutter Tech Lead & Team Lead for Crypto Wallet app (2023)
9. Flutter Tech Lead for Color app (2023)
10. Flutter Tech Lead for Storage Management System (2023)

Flutter & Firebase Engineer

Homemade Method

Head of Engineering

Verb Technology Company, Inc .

Mobile Tech Lead (via Toptal)

North Shore Research

Mobile Engineer (via Toptal)

Bmapp

Full Stack Engineer

Gradoid

Ellipsis Health

Full Stack Engineer (via Toptal)

Evil Studios Limited

Android Engineer (via Toptal)

Schneider Electric DMS NS

Software Developer

I help app founders make more money.

My journey:

📱 2007 - Built my first app for Nokia phones in high-school.
🚀 2011 - Launched my first startup: local places & events app.
💰 2018 - Raised VC money and participated in 2 startup accelerators.
🛠️ 2018 - Joined Toptal as Mobile Apps Engineer and built apps for 10 clients.
📈 2019 - Built an app portfolio that brought $108,596 in revenue with 214K users.
👥 2022 - Founded an app agency (3 devs, 1 designer, 1 QA). Amazing, but stressful.
👉 2024 - Shut down the agency in April, now helping app founders make more money.

Milos Jokic

6IT CodePress Ltd.

Web and Mobile application development from design, planning thru implementation to deployment.

If you have a greenfield or brownfield project, we are glad to support you in your business success.

Whether your project is old-fashioned or abandoned by development team we can save it and put back into operation.

Co-Founder

Viktor Borbely

Freelance Mobile Engineer — Your end-to-end solution for mobile and web development. 

Expert in Flutter, covering architecture to app store launches. 

Also skilled in React Native and Kotlin for native Android experiences. 

Back-end prowess with Spring Boot and Ktor, complemented by cloud solutions in GCP and Firebase. 

UI/UX prototyping in Figma. 

Skillset: Flutter, Kotlin, Spring Boot, Firebase, GCP.

Freelance Mobile Application Developer

Grepton

Lead Cross platform Mobile App Development

Mobile Application Developer

Combit Zrt.

Project Manager for Mobile Applications — Led daily tech development, specializing in Android (Kotlin) and multi-platform (Flutter) mobile apps. 

Managed back-end development using Spring Boot and server-side ops on Nginx. 

Versatile in Linux administration. 

Skillset: Project Management, Kotlin, Flutter, Spring Boot, REST API

Valeo

Software Development Coordinator at Valeo — Served as the liaison between product owners, validation teams, and customers. 

Excelled in resource allocation to meet customer requirements. 

Spearheaded the planning and verification process, ensuring seamless design and development.

Software Design Leader

Embedded Software developer for Climate Control module.
Automotive industry.

Keywords: C, Python, Matlab, Verification, Test

Software Engineer

Ericsson

Global Systems Integrator at Ericsson — Specialized in integrating Location-Based Services and Mobile Positioning Systems into customer networks across EMEA and APAC. 

Expertise in configuring Solaris/Linux OS and proprietary Ericsson software. Delivered tailored solutions during customer integrations. 

Offered 2nd-level 24/7 support and conducted customer training. 

Involved in pre-implementation solution design.

Services Engineer

Continental

Focused on developing diagnostic applications in C for brake control units in embedded systems. Collaborated daily with international team members, reviewed technical specifications, and analyzed test results to optimize ECU performance.

Informer Net Informatics Ltd.

I worked as a site developer. My work was to develop the site from scratch. My work based on specification. I often took part in the specification design.

Site Developer

Invitel

In my job I had the following tasks: I had to receive the incoming calls of the customers of the firm. I supported them to solve the internet connection problems, or
setting up the e-mail box account. I also registered Trouble Tickets to follow-up the
status.

Helpdesk Support Agent

TLDR;
Looking for a reliable, project-based Flutter developer for your mobile app? I'm your go-to expert for hands-on, immediate engagement. Contact me to elevate your project.

Long version

Expert Freelance Mobile App Developer in Hungary — Mastery in Flutter for unparalleled UI and peak performance, conceptualized in Figma. 

Backend finesse with Firebase and Spring Boot, with a laser focus on security and performance. 

Proven leader in both automotive and mobile app sectors, experienced in managing teams of 5-8. 

Ready to accelerate your project to the next level. 

Specialties: Flutter, Project Management, Spring Boot, GCP, AWS.

taplio

The Battle

Milos Jokic

Viktor BORBELY

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