Samson Emelyanov Email and Phone Number

Development of web services(Spring Boot Apps):- Design of the application database, definition of entities, their description, relationships between service entities.- Design of the modular architecture of a monolithic application, as well as coordination of data flows for integration into the microservices architecture of a common system(200+ services).- Compilation of AVRO schemas, generation of application classes based on them (Gradle generator).- Configuration of Kafka producers and consumers, reading messages from the bus, as well as sending messages to the bus in accordance with a certain logic of the application, approved in the architecture of data flows.- Programming of CRUD operations, definition of appropriate DTO models and mechanisms of their conversions (MapStruct, GSON).- Using SignalR (ASP.NET) technology for reading events.- Programming of business logic. Automation engineering calculations to determine recommendations for the production process (advisors).- Coverage of the service with unit tests (JUnit, MockMvc).- Deployment using gitlab-ci & okd.Released services:- Production dispatching:1. Adapter for transmitting data to an external data tracking service (third-party supplier) for drawing a workshop mnemonic diagram.2. SignalR to Kafka event converter service (adapter).3. Aggregates state service(units statuses and stages calculation).- Converter production:4. Service for ordering charge (a mixture of scrap and cast iron) for production. Economic effect from implementation: 500 Mil Rub(5 489 950 USD). https://gorod48.ru/news/1952946/?erid=4CQwVszH9pWvodLVQq7

Development the backend part of the web application for projects:1. "Dragonfly" project https://strekoza.one (cargo delivering system).Features, added to project:- Development the registration/authentification system for project. Ensure multi-login/multi-logout from several devices simultaneously.- Adding claims processing service to project.- Ensuring non-relevant data's auto-collection from DB.Support activity:- Development of CRUD's endpoints.- Bug-fixing of current functionality of project.- Deploy team's front/back-end tasks to production.2. "NLMK" https://nlmk.com/ (manufacturer of high-quality steel products).Migration from Oracle forms architecture to Java(Spring)/JS(React) tech stack:- Creating requests statistics collection service.- Swagger Schema Validation by orval lib.- Development new pages for new functionality.- Bug fixing

1. Development the Web-application(https://targetangle.ru/):Making conception of the App, market analysis, definition of the stakeholders, them expectations and intended audience of App.https://github.com/SamsonEmelyanov/target_angle-rock_band.gitClient side:- Markup of the pages according with the BEM methodology.- Stylization using preprocessors. Ensuring the adaptive with media-screens, using animations(variable opacities,spinners, etc).- Programming different interactives on the pages: Tabulations, modal windows, calculators, sliders, timers.- Development single-page applications(SPA). AJAX requests to server side. Independent rendering recieved dates in the separated React's components.Server side:- Creating the functionality of the business logic layers and project databases. Development of the microservice architecture of the project according to the scheme "Controller-Service-Repository" on the Spring Framework (Boot, MVC, Data, Security, Cloud). Normalization of databases(1-3 forms). Optimization of SQL-queries to the database.- Writing test cases based on the customer's requirements. Modular (JUnit) and integration testing of the back-end part. Automated testing of the Web-application as a whole on the Selenium Web Driver.2. Development raiting control service for assessment posted messages using node.js:https://github.com/SamsonEmelyanov/message-avgRaiting