Skill: Python, Pyspark, SQL
Exp: 6 to 12 years
Location: Pune
We are seeking a highly skilled Python / PySpark / SQL Developer to design, develop, and optimize large-scale data processing pipelines. The ideal candidate will have strong expertise in Python programming, PySpark for distributed data processing, and SQL for data querying and transformation. You will work closely with data engineers, analysts, and business stakeholders to deliver efficient, scalable, and reliable data solutions.
Key Responsibilities:
- Design, develop, and maintain ETL/ELT pipelines using PySpark and Python.
- Write optimized SQL queries for data extraction, transformation, and loading.
- Work with big data platforms (e.g., Hadoop, Databricks, AWS EMR, Azure Synapse, or GCP Dataproc).
- Implement data quality checks, validation, and error handling in pipelines.
- Optimize PySpark jobs for performance and scalability.
- Collaborate with cross-functional teams to understand data requirements and deliver solutions.
- Maintain documentation for data flows, transformations, and processes.
- Ensure data security, compliance, and governance standards are met.
- Troubleshoot and debug data processing issues in production environments.
Required Skills & Qualifications:
- 3+ years of experience in Python development.
- Strong hands-on experience with PySpark (RDDs, DataFrames, Spark SQL).
- Proficiency in SQL (complex joins, window functions, CTEs, performance tuning).
- Experience with big data ecosystems (HDFS, Hive, Delta Lake, etc.).
- Familiarity with cloud data platforms (AWS, Azure, or GCP).
- Strong understanding of data modeling and ETL best practices.
- Experience with version control (Git) and CI/CD pipelines.
- Knowledge of performance tuning for Spark and SQL queries.
- Excellent problem-solving and communication skills.
Preferred Skills:
- Experience with Airflow, Luigi, or other workflow orchestration tools.
- Knowledge of NoSQL databases (Cassandra, MongoDB, etc.).
- Familiarity with containerization (Docker, Kubernetes).
- Exposure to machine learning pipelines in Spark.
- Understanding of data warehousing concepts (Snowflake, Redshift, BigQuery).
关于高知特 (Cognizant)
高知特(Cognizant)（纳斯达克代码：CTSH）作为一家AI Builder和相关技术服务提供商，致力于通过打造全栈AI解决方案，帮助企业将人工智能投资转化为实际价值。公司凭借深厚的行业经验、流程优化和工程技术专长，将企业独特的业务场景融入科技系统，赋能组织释放人才潜能，推动切实成果，并帮助全球企业在瞬息万变的环境中保持领先。如需了解更多详情，敬请访问 cognizant.ai 或关注@cognizant。
补充雇佣信息
薪酬信息截至本职位发布之日为准。Cognizant 保留在适用法律允许的范围内随时修改该信息的权利。
申请人可能需要通过现场面试或视频会议的方式参加面试。此外，候选人在每次面试时可能需要出示其当前所在州或政府签发的有效身份证件。
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