10/22/2025 updated
KK
100 % available
Senior Node.js Engineer
Sumy, Ukraine none
JavaScript (Programming Language)Application Programming Interfaces (APIs)Amazon Web ServicesData AnalysisCloud ComputingProgram OptimizationDatabasesContinuous IntegrationCommand-Query Responsibility Segregation (Software Development)DevOpsElasticsearchGithubPostgreSQLMongoDBMySQL
Backend Development with Node.js and Rust
Advanced expertise in Node.js development with 15+ years of experience, combined with proficiency in Rust programming language for high-performance backend services and system optimization.
Database Management and Optimization
Comprehensive knowledge of PostgreSQL, MySQL, MongoDB, and database optimization techniques including query optimization, indexing, and performance tuning for high-load systems.
Cloud Infrastructure and DevOps
Extensive experience with AWS services, Docker containerization, microservices architecture, and CI/CD pipeline implementation using GitHub Actions and various deployment strategies.
Microservices Architecture
Design and implementation of scalable microservices systems with event-driven architecture, REST and GraphQL APIs, following CQRS principles.
Testing and Quality Assurance
Comprehensive testing strategies using Jest, Mocha, Chai, Sinon, Istanbul, TDD mindset, E2E and Integration Testing methodologies.
Monitoring and Performance Optimization
Implementation of monitoring solutions using Sentry, Datadog, Kibana, Elastic Stack, Miro, Retool, Docker, and PM2 for system observability.
Frontend Technologies
Supporting frontend development capabilities with Vue.js, AngularJS, React, and Rust-based Dioxus framework.
Data Processing and Analytics
Experience with data-intensive applications, real-time data processing, and analytics pipelines using various database technologies and streaming solutions.
Advanced expertise in Node.js development with 15+ years of experience, combined with proficiency in Rust programming language for high-performance backend services and system optimization.
Database Management and Optimization
Comprehensive knowledge of PostgreSQL, MySQL, MongoDB, and database optimization techniques including query optimization, indexing, and performance tuning for high-load systems.
Cloud Infrastructure and DevOps
Extensive experience with AWS services, Docker containerization, microservices architecture, and CI/CD pipeline implementation using GitHub Actions and various deployment strategies.
Microservices Architecture
Design and implementation of scalable microservices systems with event-driven architecture, REST and GraphQL APIs, following CQRS principles.
Testing and Quality Assurance
Comprehensive testing strategies using Jest, Mocha, Chai, Sinon, Istanbul, TDD mindset, E2E and Integration Testing methodologies.
Monitoring and Performance Optimization
Implementation of monitoring solutions using Sentry, Datadog, Kibana, Elastic Stack, Miro, Retool, Docker, and PM2 for system observability.
Frontend Technologies
Supporting frontend development capabilities with Vue.js, AngularJS, React, and Rust-based Dioxus framework.
Data Processing and Analytics
Experience with data-intensive applications, real-time data processing, and analytics pipelines using various database technologies and streaming solutions.
Languages
EnglishFluent
Project history
Contributing to the backend development of a high-load, data-intensive system combining internal and client-facing modules with focus on scalability and performance optimization.
Contributed to the modernization of a large-scale healthcare insurance platform by migrating its backend monorepo from Lerna to Nx, improving build performance and system stability.
Contributed to the backend of an AI-powered knowledge-management platform used by customer-support teams and call centers to generate real-time responses.