applications from outside of Poland are deleted.

Company Description

At Battronics, is a data analytics company for batteries and raw materials with big data collection.

Role Description

full-time + remote from Home-office in Poland.

Front-end engineer, data visualisation (mid to senior)

Builds the client-facing dashboards of a data platform for critical raw-material and battery supply chains: interactive charts, maps and comparison views over a REST API, for three user groups from analysts to executives.

Must have

•  4+ years building one-page applications in TypeScript with React or Vue
• Data visualisation for analytical products: time series, balances, rankings, flow or network graphs, with a library such as ECharts, Plotly, Vega-Lite, D3 or similar
• Interactive maps with e.g. MapLibre, Leaflet or deck.gl
• Consuming REST APIs from OpenAPI specifications, including pagination, filtering and OIDC/JWT authentication
• Testing and static typing as routine: unit and component tests, strict TypeScript, linting in CI
• Docker and CI/CD pipelines on GitLab or GitHub
• Turning UX wireframes and domain-expert input into a working product with little supervision

Nice to have

• Accessibility (WCAG) and responsive layouts
• SQL and PostGIS basics
• Grafana dashboards
• Node or Python backend-for-frontend experience
• Interest in raw materials, batteries or energy markets

Valid work permit and living in Poland must already exist!