As an Entry Level Hadoop Developer, you will commonly be responsible for developing, testing, and troubleshooting big data applications using Hadoop ecosystem tools under the guidance of senior engineers. You’ll handle tasks such as loading data, writing simple MapReduce jobs, and maintaining data pipelines, often collaborating with data analysts, data scientists, and database administrators. Daily responsibilities may include monitoring Hadoop clusters, addressing performance issues, and assisting with basic data integration projects. The role provides valuable on-the-job training, and as you gain experience, you may take on more complex projects and grow into advanced developer or data engineering roles.