Open to opportunities

Janko User

@jankouser

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Dynamic React Native Developer with expertise in building innovative applications.

Serbia

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What I'm looking for

Seeking a dynamic environment where I can leverage my React Native expertise to build innovative applications and contribute to a team focused on growth and technological advancement.

As a dedicated React Native Developer with over three years of experience, I specialize in creating dynamic and user-focused applications. My expertise spans React, JavaScript, and TypeScript, enabling me to design responsive and efficient interfaces. I have a proven track record of delivering seamless user experiences and collaborating effectively with cross-functional teams to ensure project success.

In my freelance work, I have successfully developed and published over five cross-platform mobile applications for iOS and Android. Some notable projects include NinetySix for football statistics, Nutsss for financial management, and Anderkat for local barber appointment scheduling. I am proficient in modern React Native libraries and frameworks, ensuring scalable and maintainable solutions.

I hold a Gymnasium Diploma and have completed courses in React, JavaScript, and TypeScript from Akademija Oxford and Udemy. I am committed to continuous learning and optimizing app performance to deliver exceptional user experiences.

Experience

Work history, roles, and key accomplishments

Current

Freelance React Native Developer

Current

Self Employed

Jan 2021 - Jan 2025 (4 years)

As a Freelance React Native Developer, I have over 3 years of expertise in designing, developing, and publishing cross-platform mobile applications for iOS and Android. Successfully delivered multiple apps, showcasing a strong ability to create user-focused, high-performance applications.

React Native iOS Development Android Development Expo Redux API Integration Client Communication Performance Optimization

React Developer

AIMTech

Sep 2023 - Nov 2024 (1 year 2 months)

As a React Developer at AIMTech, I developed dynamic user interfaces and enhanced overall user experience for web applications. Collaborated closely with designers and backend developers to ensure seamless integration and functionality, utilizing tools such as Redux and TypeScript.

React JavaScript TypeScript Redux User Experience Cross Functional Collaboration Agile Methodologies Code Review

Salesforce Developer

Comtrade 360

Aug 2022 - Sep 2023 (1 year 1 month)

As a Salesforce Developer at Comtrade 360, I customized Salesforce applications to meet specific business requirements, leveraging strong communication skills to collaborate with cross-functional teams. Developed tailored applications using Apex and Visualforce, ensuring scalability and efficiency.

Salesforce Apex Visualforce Troubleshooting Cross Functional Collaboration Data Management Reporting User Training

React and React Native Developer

DV Strategic

Dec 2021 - Sep 2022 (9 months)

In my role as a React and React Native Developer at DV Strategic, I built mobile and web applications that deliver high-quality user experiences. Collaborated with design and product teams to ensure consistency and performance across devices.

React React Native Mobile Application Development User Experience Performance Optimization Agile Development User Experience Design Cross Platform Development

React Developer (Internship)

Quantox

Sep 2021 - Dec 2021 (3 months)

During my internship as a React Developer at Quantox, I gained hands-on experience building dynamic and responsive user interfaces using React and React Native. Collaborated with cross-functional teams on real-world projects, enhancing my skills in JavaScript and API integration.