s
soxterman

Marko J

@soxterman

Senior Frontend Developer

Serbia
English, Serbian
About me
I am a Senior Frontend Developer with over 5 years of professional frontend development experience, specializing in React, TypeScript, and modern web applications. I have experience building and maintaining enterprise-scale applications, developing reusable UI components, and working with cross-functional teams to deliver reliable, high-quality software. I’m available for small freelance tasks, React and Next.js bug fixes, responsive UI improvements, Figma-to-React implementations, and focused frontend development.... Read more

Skills

s
soxterman
Marko J
Offline • 

See my services

Bug Fixes
I will fix bugs and improve your react or next js frontend
From$25 / projectMore details
Customization
I will fix layout issues and make your website responsive
From$30 / projectMore details

Portfolio

Work experience

Endava

Endava

Full-time • 1 yr 4 mos

Project - Adobe Loyalty Challenges | Position - React Developer

Mar 2026 - Present • 6 mos

Develop and maintain an enterprise React 18 SPA using React, TypeScript, GraphQL/Apollo Client, and Zustand. Build CRUD workflows for loyalty challenges, tasks, rewards, and event definitions, including scheduling, lifecycle management, audience targeting, and dependencies. Develop reusable UI components with React Spectrum and Spectrum S2, following Adobe design-system and accessibility standards. Integrate GraphQL APIs with organization-scoped, sandbox-aware data access using IMS authentication and authorization. Implement automated tests with Jest, React Testing Library, and Cypress, using Parcel, pnpm, Jenkins, and Adobe SPA Pipeline.

Project - Hartisan | Position - React Developer

Nov 2025 - Mar 2026 • 4 mos

Developed a mobile-optimized React application for a connected coffee-machine ecosystem. Implemented workflows for machine setup, brewing, recipes, maintenance, firmware updates, telemetry, and subscriptions. Built reusable React/TypeScript and React Spectrum components and integrated REST APIs with backend services and connected devices. Served as the primary frontend developer, owning feature implementation and production releases. Collaborated with backend engineers, QA, designers, and product owners across development, testing, bug fixing, and performance optimization.

Project Name - Adobe Workfront | Position - React Developer

Sep 2024 - Mar 2025 • 6 mos

Led frontend development of an activity-tracking feature monitoring user interactions and saved data. Owned frontend implementation as the sole frontend developer, from development through testing and optimization. Built reusable UI components using React, TypeScript, and React Spectrum. Implemented feature flags for controlled rollout of new functionality. Integrated Cypress for end-to-end testing and maintained frontend quality.