An InfluxDB developer designs, develops, and maintains applications using InfluxDB, a high-performance data store written specifically for time series data. They work with this open-source database to handle large volumes of timestamped data, including metrics, events, and analytics. They use InfluxDB's SQL-like query language for interacting with data, and its built-in HTTP API for data ingestion. They also integrate InfluxDB with other technologies for data visualization and monitoring. They may also be responsible for optimizing database performance, ensuring data security, and troubleshooting any issues that arise. They typically collaborate with other developers, data scientists, and business stakeholders.