Igor Khromov

Online travel agency for finding discount rates for travel-related purchases such as airline tickets and hotel stays. The company facilitates the provision of travel services from its suppliers to its clients.

Goals:
• Develop microservice with Spring Boot built on hexagonal architecture.
• Create an Akka Stream pipeline to consume, process, and produce Apache Kafka messages.
• Create logging, tracing, metrics configs to integrate with NewRelic.
• Write unit integration tests to cover the most important parts of application logic.

Developed a critical event management communication system using emails, SMS, telephone calls, faxes, pager messages, and more. As one of the largest and most reliable critical communications providers in the world, the company combines artificial intelligence (AI), machine learning, unmatched expertise, and a modern platform.

Goals:
• apply requirement developed by US Government for Securing Cloud Services (FedRAMP);
• Split big monolithic applications to microservices.
• Create microservice integrations with queues, files, DBs.
• Create deployment flow with Docker and Kubernetes.
• Create Selenium tests.
• Create unit tests.
• Create integration tests with Testcontainers.
• interviewed new team members, junior or middle-level members mentoring.
• Backlog management.

A single-page web application for project management that allows users to create projects and tasks, upload files, and write comments on tasks.

Goals:
• Design and develop SpringBoot RESTful API for Web UI application.
• Design and develop a security application layer with Spring Security and Redis as session storage.
• Integrate services with AWS S3 to download and upload files on Web UI and share objects with a presigned URL;
• Create unit and integration tests to cover the most important application functionality.
• Create Docker images to deploy with docker-compose on local and remote environments.
• Design database schema for PostgreSQL.
• Create DB migration process using Liquibase to safely evolve database schema.

REST API for a mobile application that allowed students to improve English language skills by extending the language dictionary.

Goals:
• Register and log in with Email, Google Auth, Facebook Auth.
• Token-based authorization with Redis as session storage.
• RBAC with Spring security.
• User profile management.
• Cross-platform user subscriptions on iOS, Android, and web.
• Database schema and migrations.
• Build statistical service tools to analyze big text datasets using Natural Language Processing (NLP) libraries.

Provider of an e-commerce platform for local goods. The company develops an online platform that offers digital.

Responsibilities:
• Lead a team of six people.
• Interview and hire developers for the globally distributed team.
• Develop SpringBoot RESTful service for a mobile application as a client.
• Develop SpringBoot RESTful service for Web admin page for goods management, specifically the approval process.
• Install and support clustered Openfire XMPP jabber server as a chat server for mobile iOS and Android mobile applications.
• Create a custom plugin for Openfire to store chat history in PostgreSQL.
• Create CI/CD with Jenkins.

International art market around the clock with daily art world news, expert commentary, and event reviews.

Goals:
• Extend existing system with new features and functionality.
• Profile and fix bottlenecks with slow code, SQL executions.
• Develop new monolith modules.
• Manage three team members.
• resolve build system dependency conflicts;
• follow best practices in responsive UI development for phone, tablet, and desktop screens support.