Helped the overall architecture that needs to be used in the app.

Implemented the app using AWS services (mainly AWS amplify).

Troubleshot and maintained the app, and implemented new features after soft-launch.

Designed the architect of perso.id (web and mobile apps).

Managed a small team consisted of a graphic designer and tester to deliver a mobile app to fulfill the requirements.

Made adjustment and pivoted strategy in terms of technology used in Perso.id.

Implemented the apps initially using Python and Flutter, but then pivoted to use Golang and Flutter with some adjustment of the algorithms and flows used in the mobile app.

Monitored the mobile app performance in terms of latency, correctness and number of users.

Implemented new features in the front end, back end, and other microservices.

Refactored front-end code to be more maintainable. The front end is in React and Gatsby.

Refactored the back end to improve testability especially concerning unit testing. The back end code is using Golang.

Restructured the back-end code to increase the modularity of each package.

Guided and provided a pattern for the existing to follow when implementing new features, new services, and new products.

Implemented a feature to highlight pages in PDF.js.

Enabled page redirection via a PDF file so that when users search for a term on the file, they can click in that term directly for redirection.

Implemented document classification based on category.

Developed a feature for document citations to track which documents have more importance.

Migrated a search platform from Solr 3.6 to the latest Apache Solr, which was quite challenging since version 3.6 and the latest version (7.6) were very different.

Developed the back end using Django and PostgreSQL as a database.

Built the front end using React Native for the productivity app that they were developing.

Installed a social login and JWT authentication mechanism on the front end.

Incorporated an expo so that the employer can easily view the front end.

Implemented Carousel on the front end for a description section of what the app is all about.

Managed three teams—the front end, back end, and big data—which were scattered across many countries like Indonesia, Singapore, India, and Ukraine.

Coded the back-end side using Python and Django technologies.

Implemented a DevOps strategy using Docker that was easily configurable, easy-to-deploy, and scalable.

Designed interfaces that were used by teams involved in the project.

Implemented a unit-test strategy for the back-end part of the project.

Selected new technologies using open-source solutions to replace existing .NET solutions.

Guided and trained the technical team in a technology migration.

Defined software architecture based on best practices for front end, back end, and mobile solutions.

Communicated with the customers regarding the requirements—requirements gathering.

Proposed possible architecture types as solutions regarding the requirements, including their pros and cons.

Implemented new features on the existing product used by organizations throughout the world.

Maintained products by fixing new problems found either during testing or in the production phase.

Coordinated inter-team work to implement new requests from customers.

Made estimations on the costs of implementing new features.

Trained and supported the new product or new feature rollout.

Led the development team in implementing new features.

Architected the new product and new service using various technologies like Golang, Elixir, and more.

Set up a DevOps environment on Google Cloud Platform mainly using Kubernetes.

Mentored and assisted developers in difficult tasks.

Planned the development phases using scrum methodologies.

Investigated cases and customer complaints about service performances.

Optimized the system's performance to match the clients' expectations, turning the response time to less than five seconds.

Translated the UX design from a Sketch file format to a web layout.

Implemented a React app as the platform's front end.

Developed a Django project that will serve as the cryptocurrency trading platform.

Migrated the existing code that the previous developer made. Unfortunately, there was not much information on the developed work, which brought some challenges to this project.

Constructed the trading platform to cover several cryptocurrencies—Bitcoin, Bitcoin Cash, Ethereum, Ripple, and Monero.

Implemented single sign-on service in several PHP websites.

Enabled a Go app to synchronize the data among the databases.

Built a PHP module for data synchronization among databases.