Java Developer

с декабря 2021 г. по июнь 2023 г. (1 год и 6 месяцев)

Software Engineer

Project: Fertility-focused healthcare website Spring Boot, MySQL, Flyway, REST, Drools, Stripe • Took over an unfinished project after 1.5 years of development • Refactored and launched the project into production within 6 months • Had a lead role as the primary backend developer • Cleaned and organized the database, implemented migrations • Removed code duplications and extracted common functionalities into a separate shared module • Integrated the Stripe payment system • Implemented document signing by patients via email magic link and storing them in S3 • Implemented a rule engine module (utilizing Drools system) for generating medical reports based on health questionnaires and medical test results • Developed functionality for uploading medical tests and questionnaires, and preprocessing them for the rule engine • Created a portal component, allowing doctors to track the status of each order, access medical records, and generate reports • Implemented paired product workflows with email notifications for both woman and her partner • Upgraded the patient appointment booking system, which was synchronized with doctors' Google Calendars

с декабря 2021 г. по июнь 2023 г. (1 год и 6 месяцев)

Software Engineer

Project: Modular services for managing customers, devices, firmware. Spring, JAX-RS, Postgres, Keycloak, JWT, Things Board, REST • Reconfigured and migrated the Keycloak to a newer version in the JAX-RS module of the system • Implemented Keycloak authentication in another Spring Boot module, replacing the custom authentication service; combined both authentication systems for flexibility during the migration process • Added offline token authentication • Improved data fetching speed by refactoring the system's component communicating with the Things Board API; configured the asynchronous data retrieval • Added JWT token caching for Keycloak and Things Board API • Implemented the REST API for system modules communication Project: Email journaling service Spring Boot, MySQL, Box CMS, Amazon SES, Java Mail API • Implemented a specialized service that tracked emails related to user actions in the Box CMS, fetched additional data using the Box API, created journaling emails for archiving purposes, and generated reports with statistics

с января 2021 г. по ноябрь 2021 г. (10 месяцев)

Full Stack Developer

Project: sazka.cz – the primary lottery website in the Czech Republic .NET MVC, Kentico CMS, HTML5, Sass, TypeScript, Vue.js • Developed and maintained the website, participated in the migration process from .NET Web Forms to MVC platform • Restructured multiple widgets using the Razor Pages framework • Improved outdated JavaScript components by refactoring them using TypeScript and Vue.js • Created dynamic pages for both desktop and mobile devices, covering the backend and frontend aspects

с августа 2019 г. по декабрь 2020 г. (1 год и 4 месяца)

Software Developer

Project: Intranet web applications Java EE, MSSQL, JavaScript, JQuery, CSS, Bootstrap, HTML • Participated in the development of new features for the app that tracked offers on medical products • Implemented an extension service to display and update basic information for products available in stock • Refactored the product ticket generation app, implemented error handling for invalid input files • Participated in the internationalization of web apps and automated the substitution of texts with appropriate variables • Consistently supported web apps and addressed various bug fixes