Ananta Pratama, Developer in Serpong Sub-District, South Tangerang City, Banten, Indonesia
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Ananta Pratama

Verified Expert  in Engineering

Full-stack Developer

Serpong Sub-District, South Tangerang City, Banten, Indonesia
Toptal Member Since
December 13, 2021

Ananta is a seasoned front-end engineer with 6+ years of experience delivering impactful solutions. Driven by his curiosity, he has honed his skills in React to become a master at creating user-friendly, high-performance web and mobile applications. Ananta's expertise in back-end development speaks to his versatile technical abilities. And, with his track record of success in leading projects and teams, Ananta's excellence makes him a valuable asset to any organization.


Container Exchange Services - Main
React, Next.js, Front-end, Unit Testing, Storybook, Material UI, Chakra UI...
Allegis - Cruise Automation - Main
React, TypeScript, UI Testing, Jest, Cypress, GitHub, React Redux, SQL...
React, React Native, Node.js, Agile Project Management, API Integration...




Preferred Environment

MacOS, MacBook, Visual Studio Code (VS Code), React, React Native, Express.js, TypeScript, Node.js

The most amazing...

...platform I've developed and launched is English Academy, an English learning platform with more than 1,000 weekly active users.

Work Experience

Senior Front-end React and Next.js Developer

2023 - 2024
Container Exchange Services - Main
  • Developed an internal portal where users can review suspicious transactions and act on whether to approve or deny them. This portal increased the transaction review process by 200%.
  • Developed end-to-end automated testing that reflects user behavior with reporting, recording, and coverage reports.
  • Planned and managed all aspects of the project's developments. From requirements gathering, technical designs, development work, and testing. Demonstrated exceptional management skills to ensure projects were completed within the timeline provided.
Technologies: React, Next.js, Front-end, Unit Testing, Storybook, Material UI, Chakra UI, UI Design, DevOps, Zustand

Front-end React and TypeScript Developer

2022 - 2022
Allegis - Cruise Automation - Main
  • Showcased exceptional problem-solving skills and a commitment to driving business results by playing a crucial role in a high-impact project that dramatically boosted new advisor success rates by 80% and accelerated the onboarding process by 50%.
  • Built an innovative training platform for advisors using React and Redux. Designed a comprehensive video replay system with dynamic inputs and automated playback, with a scoring system, resulting in an efficient and effective onboarding for advisors.
  • Planned and managed all aspects of project development, from gathering requirements to technical design, workload assignments, and successful deployment. Demonstrated exceptional leadership and managerial skills in ensuring project success.
Technologies: React, TypeScript, UI Testing, Jest, Cypress, GitHub, React Redux, SQL, Web Development, HTML5

Front-end Engineer

2020 - 2022
  • Designed and launched Skill Academy using React Native, resulting in over 400,000 downloads and a 5-star rating. Demonstrated expertise in mobile app development and a commitment to delivering exceptional user experiences.
  • Led the development and launch of the English Academy, resulting in a community of over 1,000 weekly active users. Showcased exceptional leadership skills, technical expertise, and a commitment to delivering impactful solutions.
  • Demonstrated outstanding leadership and project management skills by effectively overseeing the front-end team during the initiation, planning, and successful development of the English Academy platform.
Technologies: React, React Native, Node.js, Agile Project Management, API Integration, Architecture, REST APIs, JavaScript Testing, Figma, Next.js, HTML, APIs, eCommerce, Front-end, Prisma, Progressive Web Applications (PWA), Cloud, GitHub, Responsive Web Apps, Apollo, Mobile-first Design, Video Streaming, Marketplaces, Tailwind CSS, CSS, SQL, Mobile Development, Web Development, User Interface (UI), User Experience (UX), HTML5, Zustand

Front-end Engineer

2019 - 2020
  • Designed and delivered an innovative internal product for the warehouse management system, encompassing inbound, storage, and shipping management, showcasing expertise in software development and a commitment to streamlining business operations.
  • Demonstrated exceptional problem-solving skills by conducting an in-depth analysis of operational challenges and designing effective systems to address them, driving improved efficiency and productivity.
  • Planned and designed new systems and features to support the operational team, tailored to meet the evolving needs of the business. Exemplified exceptional strategic thinking and a commitment to driving continuous improvement.
Technologies: Node.js, React, JavaScript, Flow, Git, API Integration, Full-stack, REST APIs, HTML, APIs, Front-end, Progressive Web Applications (PWA), Cloud, GitHub, React Redux, Apollo, Mobile-first Design, Marketplaces, CSS, SQL, Web Development, User Experience (UX), HTML5

Full-stack Engineer

2017 - 2019
  • Exhibited exceptional leadership and project management skills by effectively assigning team members to projects based on requirements, creating comprehensive SOPs through extensive research, and staying up-to-date with industry trends.
  • Demonstrated strong analytical skills and project management acumen by accurately estimating project effort and time, successfully delivering high-quality software on schedule.
  • Exemplified exceptional communication and negotiation skills by effectively gathering project requirements from clients and negotiating timelines and budgets while ensuring team capacity, leading to successful and efficient project delivery.
Technologies: React, React Native, Android, iOS, Express.js, Node.js, API Integration, Architecture, Full-stack, REST APIs, Firebase Authentication, HTML, APIs, Front-end, Cloud, GitHub, Amazon Web Services (AWS), Apollo, UI Design, CSS, Mobile Development, Web Development, User Interface (UI), Firebase Cloud Functions, HTML5

Front-end Engineer

2016 - 2018
  • Created an app that connects sports enthusiasts by locating nearby events and facilitating workout partnerships. Local experts tested and verified the app, ultimately receiving recognition through an award for its innovative solution.
  • Engaged actively with local developer communities and expanded my network and knowledge by heading tech talks and participating in community projects. Exhibited a passion for software engineering and a drive for continued learning.
  • Imparted knowledge and shared expertise as a mentor for Facebook Developer Circles, delivering engaging lectures on React and React Native to cultivate the skills of aspiring developers.
Technologies: React, React Native, Node.js, JavaScript, API Integration, Full-stack, REST APIs, Firebase Authentication, HTML, APIs, Front-end, Cloud, GitHub, CSS, Web Development, Firebase Cloud Functions, HTML5

English Academy
English Academy is an English learning platform targeting the Indonesian and Thailand markets.

I developed this project from scratch and released it to the public. Currently, it has over 1,000 weekly active users and still increasing.

The platform key features are:
• Live teaching - users can interact and communicate with their teachers through a conference call.
• Ebook viewer - users can study through ebooks provided by their teachers.
• Quiz maker - teachers can create and deliver online exercises to their students.

Skill Academy
A general online learning platform designed to develop users' expertise in a specific field. It contains multiple courses from several top-level mentors.

The app has already surpassed 400,000 downloads on the Play Store.

Sorabel Warehouse Management System

A web-based app for managing Sorabel's warehouse that covers the warehouse's operations from inbound goods, storage management, and shipping systems. It offers 99% accuracy in tracking 100% of the items in the warehouse.

I developed the front-end web app and an intermediary back end to split the requests from the front end to multiple separate back-end services.

A mobile app designed to track and record users' pregnancy journey and symptoms. The application provides users with content according to the evolution of pregnancy and allows them to schedule appointments with doctors and midwives for online consultation.


Minato is a mobile app used to get information about suppliers and buyers looking to trade goods to and from Japan. The user can put his buying or selling interest into the app, so other users can contact him and arrange a transaction.

I developed the back end for this app using TypeScript, PostgreSQL, and Express.js.


Sportyway is a mobile app used to find sports events nearby. Users can submit a sports event so all the other users can see it. They can also search for a sports event according to their interest. The idea and prototype have been tested and approved by local and national experts.

I built the app using React Native and TypeScript and developed the back end using Express.js.

Snoonu is a mobile app for food delivery in the Qatar region.

I developed this user-facing app from scratch, delivered it two weeks prior to the deadline, and maintained it for six months. I used React Native and TypeScript for the app development.
2015 - 2019

Bachelor's Degree in Computer Science

University of Brawijaya - Malang, Indonesia


React, Node.js, REST APIs, React Redux, ReasonReact


GitHub, Prisma, Flow, Git, Webpack, JavaScript Testing, Figma, Firebase Authentication


Next.js, React Native, Express.js, Cypress, Jest, Tailwind CSS, Material UI


TypeScript, JavaScript, CSS, HTML, HTML5, GraphQL, SQL, Java, Reason ML


MacOS, Visual Studio Code (VS Code), Firebase, Android, iOS, Docker, Google Cloud Platform (GCP), Amazon Web Services (AWS)


PostgreSQL, MongoDB


Mobile Development, Agile Project Management, UI Design, Unit Testing, DevOps


MacBook, API Integration, APIs, Front-end, Progressive Web Applications (PWA), Web Development, Full-stack, eCommerce, Responsive Web Apps, Mobile-first Design, Zustand, Push Notifications, Architecture, Semantic UI, Cloud, UI Testing, Apollo, Video Streaming, Marketplaces, User Interface (UI), User Experience (UX), Firebase Cloud Functions, Storybook, Chakra UI

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