Darya Bortnik Email & Phone Number

Georgia

WynnBet/BetbullA betting company which operates on web, iOS and Android platforms and provides the patrons access to digital betting on sports as well as a variety of casino games. The primary market is the USA.- Contributed to Sportsbook and other core elements of the app, which included deposit & withdrawal, cashout, and promotions. - Identified and fixed bugs, ensuring smooth performance of the application.- Collaborated with cross-functional teams to integrate a third party service Leanplum which resulted in increased user engagement.- Implemented caching strategies using Redis to optimize application performance, reducing both the response time and server load.- Leveraged RabbitMQ to develop event-based data updates, ensuring real-time data synchronizations and improving communication between different components of the application.- Conducted thorough investigations of app logs using Kibana and Datadog, effectively identifying and resolving issues, improving overall application reliability, and troubleshooting performance bottlenecks.Stack: Java 8 & 11, Spring, Spring Boot, PostgreSQL, Redis, RabbitMQ, GraphQL, Jenkins.Testing & monitoring: Swagger, Postman, Kibana, Datadog.

G.J. Gardner Homes - GreenHouse 5.0Сhallenges:- to keep the full scope of the current system’s functionality, while boosting its capabilities with advanced web technologies adopted to the corporate use.- to improve multi-nation system architecture.- to enhance document management and template management;Applications:- Builder Portal: everyday franchise work (CRM, Docs templating, Estimation, Jobs, Accounting, Schedule, Marketing, Reporting, etc);- Customer Portal: accessing shared artifacts and sign contractual docs via Eversign;- Supplier Portal: working on invoices, accessing shared artifacts, calendar events; - Scheduled Task: repeatable tasks that runs on scheduler;- Reporting Community: reporting for Builder Portal;- Reporting Commercial: on Demand analytical ad-hoc reporting;Integration Points: • Google Apps For Work (Gmail API, Drive API, Admin SDK) • XERO • MailChimp • Eversign • PayPal • Nexmo/Twilio3rd Party Component: • Jasper Reports Responsibilities: bugfixing, performing change requests enhancing existing functionality connected with PayPal integration, document processing, Mailchimp email campaigns. Developing a microservice for widgets to improve execution speed and decrease database load. Stack:Main project: Java 8, J2EE, PostgreSQL 9.6, Maven, WildFly, Keycloak, Mapstruct, Apache Deltaspike, Quartz.Microservices: Spring & Hibernate, Spring Boot, Lombok.

Minsk, Belarus

EMS - Employee Management System (VAC)vac.softeq.com is a web-based application that allows its users to view the remaining Vacation balance, request Regular Vacation, and Sick Leaves from the app, cancel requests and see the history of all requests. It also makes the approval process quick and robust so no more accidentally forgotten inquiries can be found.Responsibilities: Implementation of new API connected with Events, Listeners, and Processors as a part of Approval Flow and test coverage. Architecture design & planning of the backend and database for new features. Code review.Stack; Java 14, Spring & Hibernate, Spring Boot, PostgreSQL 12, FlyWay, JUnit 5, Mockito, MapStruct, Gradle, Docker

Minsk, Belarus

DCCP - The Delay Code Clearing PortalAn airport flight control and information system. The functions are:- The airport team can manage flight delays. - Airlines can enter information about a particular flight delay – duration, code, cause, etc. - The system processes the delays – raises warnings automatically, sends emails, and etc. - An airline agent can keep track of all the delays and monitor occurring changes.Responsibilities: Was involved in analysis, estimation of CRs, planning, and development of new features. Provided test coverage and tested the code on the dev & staging environment. Took part in refactoring old functionality and bug fixing. Performed code review, provided feedback on PR.Stack: Java 8, Java EE, Git, Junit / Mockito, Postman, Maven build tools, Oracle DB----------Epson - Ink Replenishment System (IRS)A web-based application that enables users to never run out of ink by leveraging IoT technologies. The functions are: - The system tracks and analyses ink levels of registered printers. - It forecasts when a certain printer is going to run out of ink and orders the replenishment in advance. - - On the portal, the user can also manually order ink cartridges and manage their draft orders.Responsibilities: Bug fixing and refactoring activities. Added test coverage, performed local testing. Took part in code review.Stack: Java 8, J2EE, WildFly 10, Keycloak, IntelliJ IDEA, Git, Maven, Junit / Mockito, Postman

Student, Junior Java Developer, Jd01 «Java Programming. Basic Level»

During the course the following topics have been mastered both in theory and in practice: - Introduction in Java, OOP principles - Types.

Junior C/C++ Developer, Programming

Basic programming knowledge (C/C++)

Bachelor'S Degree, Logistics, 9,3

Activities and Societies: Совет старост БГУ. Команда по волейболу.Принимала участие в научных конференциях с работами на русском и.

Front End Development Certification, Computer Software Engineering