Senior Big Data - Hadoop Developer

The Applications Development Intermediate Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to applications systems analysis and programming activities.

Required Skills & Experience:

• Strong Big Data Ecosystem Knowledge: 5-8 years of Demonstrable experience with Hadoop and its core components.
• Expertise in Hive for data warehousing and query processing.
• Experience with Impala for real-time querying of data in Hadoop.
• Solid understanding of data ingestion tools like Sqoop for RDBMS-to-Hadoop data transfer.
• Proficiency in Oracle Database: Extensive experience with Oracle SQL, PL/SQL, views, packages, and stored procedures.
• Proven ability in Oracle query tuning, performance optimization, and index management.
• Familiarity with Oracle database architecture, backup/recovery, and security concepts
• Analytical & Problem-Solving Skills: Excellent analytical, problem-solving, and debugging skills with a keen eye for detail.
• Communication: Strong verbal and written communication skills, with the ability to explain complex technical concepts to non-technical stakeholders.

Education:

• Bachelor’s degree/University degree or equivalent experience

Responsibilities:

• Utilize knowledge of applications development procedures and concepts, and basic knowledge of other technical areas to identify and define necessary system enhancements, including using script tools and analyzing/interpreting code
• Consult with users, clients, and other technology groups on issues, and recommend programming solutions, install, and support customer exposure systems
• Apply fundamental knowledge of programming languages for design specifications.
• Analyze applications to identify vulnerabilities and security issues, as well as conduct testing and debugging
• Serve as advisor or coach to new or lower level analysts
• Identify problems, analyze information, and make evaluative judgements to recommend and implement solutions
• Resolve issues by identifying and selecting solutions through the applications of acquired technical experience and guided by precedents
• Has the ability to operate with a limited level of direct supervision.
• Can exercise independence of judgement and autonomy.
• Acts as SME to senior stakeholders and /or other team members.
• Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

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