Database Administrator (Oracle & Hadoop)

Location: Kolkata

Full time permanent position

Experience: 4 - 9 years

Key Responsibilities:

Oracle Database Administration:

• Install, configure, and upgrade Oracle databases across multiple environments (Dev, QA, Production).

• Perform database performance tuning and optimization using tools like AWR, capacity planning, and proactive monitoring.

• Implement backup and recovery strategies using RMAN and Data Guard.

• Manage database security, user access, and audit.

• Create and optimize PL/SQL procedures, triggers

• Manage data models for telecom application requirements.

Hadoop Administration:

• Install, configure, and maintain Hadoop clusters (HDFS, Hive, HBase, Spark, etc.).

• Monitor cluster performance, perform tuning, and troubleshoot issues in big data pipelines.

• Manage data ingestion processes using Kafka.

Qualifications:

• Bachelors or Master’s degree in Computer Science, Information Technology, or a related field, with consistent First class at board and university level examinations

• 4+ years of experience in Oracle Database Administration.

• 3+ years of experience managing Hadoop infrastructure.

• Strong knowledge of SQL, PL/SQL, shell scripting, and Linux-based environments.

Additional skills (desirable)

1. Knowledge of security (using Kerberos, Ranger, etc.) and role-based access continuous

2. Knowledge of Telecom domain, Familiarity with telecom data types (e.g., CDRs, subscriber data, real-time usage metrics)