I built the entire SpringBoot Java backend GQL server from scratch. I was, and I still am, responsible for everything about the backend from top to bottom. I write the code, I test the application, I deploy new releases, I monitor the database, etc... And I am adding to it as we develop more features for the site. The server uses JPA to read and write data. It has an integration with Helcim for payment processing. And it has a REST API and a GQL API. I am also contributing middleware code for the frontend to help them to use the backend API.

Develop Kotlin code for Apollo GraphQL queries and mutations using Reactor Core

Develop Java code for backend microservices

Develop mobile application for user acquisition flows for paid and organic traffic

Develop A/B experiments on signup page and checkout page (e.g. Apple Pay)

Develop Incentive campaigns (eligibility, redemption, gaming prevention)

Develop blog publishing system for SEO

Sprint planning, spikes, documentation and other non-coding technical work

Developing front end GUI of web application using HTML and JavaScript.

Developing back end using LAMP, with Ubuntu, Apache, MySQL and PHP running on AWS EC2.

Developing Java REST services using Spring Boot.

Developing front end GUI using React.

Technologies: HTML, JavaScript, jQuery, Ubuntu, PHP, MySQL, Java, React, GIT.

Developing front end and back end of open source data analytics platform using Java.

Technologies: Java, XML, Maven, GIT, JUnit.