Vyacheslav (Slava) Korchagin Email & Phone Number

Remote

* Java lead, as a part of an international team I design and develop core modules of applications, backend and middleware services, frontend components, set up cloud infrastructure.Both these projects are high loaded, high secure software used in state healthcare system:- AWS serverless platform, Java 11 (GraalVM native), Lambda (plain with Dagger DI/Quarkus REST Lambda with Jakarta EE)/API Gateway/WebSocket API/custom Authorizers, Cognito, DynamoDB, S3, SSM, KMS, CloudWatch (custom logging, scheduler), CloudFormation, SAM.In the project we also use CloudFront, QuickSight, EMR/Spark, Glue/Parquet, Redshift, Athena.Front-end: React/Redux, TypeScript.- Spring Framework: Spring Boot, Data REST/JPA/JDBC, Security (+ Keycloak API), WebSockets/STOMP/RabbitMQ; Hibernate, JDBC templates, JAX-WS, JAXB; Oracle DB; Tools: JHipster, Gradle, Liquibase, Swagger, Docker.* Node.js/TypeScript back-end lead:- Social business network. AWS serverless platform, Node.js, Lambda, DynamoDB, S3, Cognito, DocumentDB etc.- CRM system with call center. AWS, microservices, Node.js, Twilio voice calls, Prisma ORM.- SCM system. AWS EC2, RDS, Node.js, Nestjs, TypeORM.* React FE development. DevOps tasks (AWS CDK, CloudFormation, Docker).

Moscow, Russian Federation

As a full stack Web/Java EE/SQL developer I performed a full cycle of development from architecture design to UI implementation. Most of my projects were office automation tools increasing the efficiency of communication between departments of Rosenergoatom Concern, the largest generator in Russia and the 2nd nuclear power producer in the world.Servers: SAP JEE Server; Apache Tomcat; Payara/GlassFish.Back-end: Java EE (Servlets, JDBC, JPA, EJB, JMS, JCA, JAX-WS/SOAP, JAX-RS/REST, JAXB); Spring Framework (MVC, Security, Data JPA, Data REST, AOP); Hibernate.Databases: Oracle DB, PostgreSQL.Front-end: Vue.js, Quasar; JQuery, Apache Wicket, JSP/JSTL, Thymeleaf; SAPUI5, Web Dynpro Java, HTMLB.Tools: Eclipse IDE (SAP NWDS), SAP NWDI/DTR, Apache Maven, Apache Ant; JUnit, Mockito; Redmine.

Remote Jobs

The most noticeable projects: - Transneft (the largest oil pipeline company in the world): I was responsible for a whole back-end design and realization in cooperation with a front-end developer and a system administrator. We developed a Customers' self-registration infrastructure. My participation included an implementation of business logic layer, data logic and model, web services integration, RESTful facade. Tech stack: SAP JEE 7.5, JPA, JAX-WS, JAX-RS, JMS, Java Crypto API. Database: Oracle, IBM DB2.- MegaFon (one of the Big-3 mobile and telecom operators in Russia): On team of four Java developers I designed and developed modules for integration with EDI-operator (JSON-RPC), OpenText (ArchiveLink, Archive Server, Content Sever). Tech stack: SAP PI (Java Proxy), SOAP, REST, EJB, JMS.- Evraz Group SA (one of the largest vertically-integrated steel-making, mining and vanadium businesses in the world): As an independent developer I implemented SAP XI/PI (Process Integration Bus) integration scenarios for document automation system "Corporate Contracts Directory". I performed all repositories and configuration migration from SAP XI 3.0 to SAP PI 7.31; adapted integration scenarios from SAP MDM 5.5 to MDM 7.1; developed a resource adapter (JCA 1.2) and some data-processing tools (EJB, JMS).

Moscow, Russian Federation

Design and development: J2EE applications, Portal components and services using Repository Framework, Flexible UI, User Management Engine API, Web Dynpro Java.Technical Team leading: implemented SAP Portal systems (three-level landscape) at six large-scale industrial complexes.Automated data exchange between SAP MDM and business systems using SAP XI: design and development of integration scenarios, configuring of SLD, ALE, implementation of configuration scenarios using ABAP Proxy, Java Proxy, custom XI MDM adapter, IDoc, JDBC, File, Mail adapters. Data mapping: XSLT, Java, UDF.Designed various technical and user interfaces for SAP MDM.

Moscow, Russian Federation

Put the SAP Enterprise Portal into service.Designed applications for SAP AS Java and SAP Portal.Created a corporative web-site based on SAP technology.Heterogeneous systems were consolidated using SAP Business Connector.

Moscow, Russian Federation

Development of web-based trading system for truck dealer (J2EE).

Moscow, Russian Federation

"MosaicFX" Portal's parts development (Perl, PHP).

Voronezh, Russian Federation

Design, development and integration of the clinic automation system (MS Visual FoxPro).