Hadoop / ETL Developer and PySpark

Job Description : We are seeking a highly experienced Senior Big Data & DevOps Engineer with 8+ years of professional experience in HDFS, Hive, Impala, PySpark, Python, and DevOps automation tools such as uDeploy and Jenkins. This role is responsible for managing end-to-end data operations, including HDFS table management, ETL pipeline development, multi-environment codebase governance, platform upgrades, and production support.

The ideal candidate will have strong expertise in Linux system operations, Big Data ecosystem tools, and experience with incident / change management using ServiceNow. This role plays a key part in ensuring the stability, scalability, and efficiency of enterprise data platforms while enabling seamless development-to-production workflows.

Key Responsibilities :

Big Data Platform Operations

Design, manage, and optimize HDFS directories, tables, and partitioning strategies.

Implement and enforce data retention and lifecycle policies across large datasets.

Administer Hive and Impala environments, ensuring high availability, performance tuning, and security compliance.

ETL Development & Data Engineering

Develop scalable ETL pipelines using PySpark, Hive, and Python.

Build reusable frameworks for data ingestion, transformation, and aggregation.

Optimize job performance through query tuning, resource management, and parallelization.

DevOps & Environment Management

Maintain and promote code across DEV, QA, UAT, and PROD environments.

Develop and support CI / CD pipelines using Jenkins and uDeploy for automated deployments.

Perform environment upgrades, patching, and dependency management aligned with release schedules.

Linux & Infrastructure Operations

Execute Linux administration tasks including performance tuning, disk management, and scripting (Bash / Python).

Troubleshoot cluster-level issues including node failures, job errors, and distributed system anomalies.

Change & Incident Management

Drive incident resolution and change execution using ServiceNow workflows.

Conduct root cause analysis (RCA) for critical issues and implement preventive solutions.

Ensure compliance with ITIL processes for change, incident, and problem management.

Collaboration & Technical Leadership

Partner with data engineers, developers, DevOps teams, and business analysts to ensure operational excellence.

Mentor junior engineers and contribute to technical leadership across the Big Data ecosystem.

Document operational procedures, troubleshooting guides, and architectural decisions for internal knowledge sharing.

Required Qualifications :

Bachelor's degree in Computer Science, Information Technology, or related field.

8+ years of experience in Big Data engineering and DevOps practices.

Advanced proficiency in HDFS, Hive, Impala, PySpark, Python, and Linux.

Proven experience with CI / CD tools such as Jenkins and uDeploy.

Strong understanding of ETL development, orchestration, and performance optimization.

Experience with ServiceNow for incident / change / problem management.

Excellent analytical, troubleshooting, and communication skills.

Nice to Have :

Exposure to cloud-based Big Data platforms (AWS EMR).

Familiarity with containerization (Docker, Kubernetes) and infrastructure automation tools (Ansible, Terraform).