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

Kobe Apps

Integrated native biometric SDKs (Kotlin/Swift) into the credit card module of a high-traffic retail app with over 10M monthly visits and 6M+ Android downloads. Delivered the solution modularly to preserve SaaS architecture and avoid impact on other clients.

Customized a shared credit card module for one of Kobe's clients by developing new features and integrating with their provider’s API. Delivered a client-specific package using repository interfaces, ensuring full compliance with the SaaS’s multi-tenant architecture.

Flutter Developer

Navit

Independent Affiliate

FanHero

Led mobile development of a whitelabel video and audio streaming platform with 2.5M+ downloads. Delivered scalable features such as live streaming, background playback, analytics (Firebase, Mux, Plausible), and maintained CI/CD pipelines and i18n support.

Lead Mobile Engineer

FTeam | Especialista em Aplicativos 

Mobile Application Developer

As a highly skilled outsourced Flutter mobile developer, I have consistently demonstrated my ability to lead teams, make strategic decisions, and deliver high-quality code to help various organizations achieve their goals. I have successfully collaborated with prominent companies such as Quem Contrato, Bonus Telecom, e-space, AgroNeural, Docnix, Pupz, Walkbeat, PPIX, Fanhero, and Inspire.

In my role as an outsourced Flutter instructor, I have imparted my knowledge and expertise to numerous teams, empowering them to create exceptional apps using Flutter. Notable among my clientele are Santander, Sicoob, Gama, and Toth Lifecare.

As an outsourced Flutter consultant, I have played a pivotal role in enhancing team performance and optimizing project outcomes for companies like Serasa, Toth Lifecare and Ecomilhas. My in-depth industry knowledge and strategic insights have consistently contributed to the success of the teams I've collaborated with.

Flutter Specialist

Walkbeat

Mobile Engineer

AllPro Creative Studio

Chief Program Officer & Cofounder

Autônomo

Desenvolvedor

Flutter Developer @ Kobe Apps

Flutter developer with over 5 years of experience delivering high-performance and scalable apps with solid architecture. I have worked on dozens of projects. I led teams, made technical decisions, and handled complex native SDK integrations.
To learn more about the projects I've worked on, click the "Check out my work" button near my profile picture.

Adby Santos

taplio

The Battle

Milos Jokic

Adby Santos

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