Middle Node.js Data Engineer (Dashboards) (вакансія неактивна)

Core Responsibilities

• Design, develop, and maintain backend services in Node.js to support data-driven dashboards.
• Build efficient data pipelines for aggregating, transforming, and preparing data from multiple sources (databases, APIs, flat files).
• Develop and optimize RESTful or GraphQL APIs to feed dashboard frontends.
• Collaborate with frontend engineers, data analysts, and product managers to define dashboard requirements.
• Implement data models and storage solutions (SQL/NoSQL) for efficient querying.
• Optimize data queries and API responses for real-time or near real-time dashboard updates.
• Ensure data integrity, consistency, and accuracy in all visualizations.
• Integrate authentication and authorization for secure dashboard access.
• Participate in code reviews, testing, and deployment processes.

Required Skills & Qualifications

• 3+ years of professional experience with Node.js in backend development.
• Strong knowledge of JavaScript (ES6+) and familiarity with TypeScript.
• Proficiency with SQL and at least one relational database (PostgreSQL, MySQL) and/or NoSQL database (MongoDB, Redis).
• Experience building REST APIs and/or GraphQL APIs.
• Solid understanding of data structures, ETL processes, and data modeling.
• Familiarity with dashboard frameworks (e.g., Metabase, Superset, Grafana) or integrating with charting libraries (e.g., Chart.js, D3.js, Highcharts).
• Knowledge of API authentication methods (JWT, OAuth2) and role-based access control.
• Understanding of performance optimization for backend services and database queries.
• Proficiency with Git and collaborative development workflows.
• Basic knowledge of Docker or containerized environments.