Oleksandr S.

Oleksandr S.

Full Stack Java + Javascript Developer

Kiev , Ukraine

Experience: 7 Years

Oleksandr

Kiev , Ukraine

Full Stack Java + Javascript Developer

67200 USD / Year

  • Immediate: Available

7 Years

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About Me

Proficient in software development and delivery in the financial business area using Agile SCRUM methodology with a solid computer science background and strong analytical, communication and soft skills.

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Skills

Portfolio Projects

Myo (Java, Angular 6, RxJS, Kotlin, Docker, Hibernate, Spring)

https://www.upwork.com/fl/oleksandrs53?p=1043989792804585472

Company

Myo (Java, Angular 6, RxJS, Kotlin, Docker, Hibernate, Spring)

Description

1) The client asked to create a Management System for nursing homes. 2) I've implemented both backend and frontend, backend with Kotlin + Spring Boot/JPA/Hibernate, frontend with TypeScript + Angular 6/RxJS. I've also implemented smart i18n in Angular app as well as sophisticated security features with Spring Security. This application was deployed using docker-compose, SSL was provided by Let's Encrypt service. 3) The client was satisfied since everything worked fine and in line with initial requirements

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CTR Social Selling (Java,Akka,Cassandra,Ionic,Stripe,Spring,AngularJS)

https://www.upwork.com/fl/oleksandrs53?p=1043992508025028608

Company

CTR Social Selling (Java,Akka,Cassandra,Ionic,Stripe,Spring,AngularJS)

Description

CTR is an enterprise-grade solution for data analysis in Social Media which includes natural language processing features and consists of 4 separate applications: 1) scalable analytics software + API 2) web-application for customers 3) cross-platform mobile application for executants 4) administration web-application All components were built from scratch by me as well as deployment process & infrastructure configuration. Technology overview: 1) Backend: Java, Spring, Akka, Cassandra, Hazelcast (for sharing data between application instances, multi-server scalable architecture), Solr (full-text search), Stanford-NLP (for natural language processing) 2) Frontend: AngularJS, Ionic, HTML5 3) Infrastructure: Docker

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Wordberry HTML5 game (fullstack dev),Java,Spring,Knockout,AI,bot,Kafka

https://apps.facebook.com/wordberry/

Company

Wordberry HTML5 game (fullstack dev),Java,Spring,Knockout,AI,bot,Kafka

Description

This is a *complex project* which included: 1) Backend + DB development 2) Frontend with HTML5 development 3) Graphical design - designers were found and hired as subcontractors 4) Integration with Social Networks (Facebook, VK) 5) Infrastructure(servers, hosting etc.), deployment procedures implementation and support services provided. Goals: develop high load and scalable Scrabble classic game implementation using HTML5 and Java for social platforms: Facebook and VK. Details: Both backend and frontend were developed. On backend Java + SpringMVC + Hazelcast + PostgreSQL were used. On frontend: HTML5/CSS3 + TwitterBootstrap + Javascript + KnockoutJS + WebSockets were used. Also, the deployment procedure was implemented as well as server infrastructure configuration. Results: Game was implemented quickly and got regular players.

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