Software Engineer, JavaScript
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.
Required languages
English | B2 - Upper Intermediate |
Ukrainian | Native |
Published 1 September
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$2000-3200
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