The Oracle Big Data Developer position is 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. Responsibilities:<ul><li>Conduct tasks related to feasibility studies, time and cost estimates, IT planning, risk technology, applications development, model development, and establish and implement new or revised applications systems and programs to meet specific business needs or user areas</li><li>Monitor and control all phases of development process and analysis, design, construction, testing, and implementation as well as provide user and operational support on applications to business users</li><li>Utilize in-depth specialty knowledge of applications development to analyze complex problems/issues, provide evaluation of business process, system process, and industry standards, and make evaluative judgement</li><li>Recommend and develop security measures in post implementation analysis of business usage to ensure successful system design and functionality</li><li>Consult with users/clients and other technology groups on issues, recommend advanced programming solutions, and install and assist customer exposure systems</li><li>Ensure essential procedures are followed and help define operating standards and processes</li><li>Serve as advisor or coach to new or lower level analysts</li><li>Has the ability to operate with a limited level of direct supervision. </li><li>Can exercise independence of judgement and autonomy. </li><li>Acts as SME to senior stakeholders and /or other team members.</li><li>Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firms 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.</li></ul> Qualifications:<ul><li>5+ years of Oracle PL/SQL development experience in web application development.</li><li>Expertise in logical and physical data models, maintenance of DDLs.</li><li>Expertise in Oracle objects, PL/SQL code, and abilities to write complex SQLs.</li><li>Must collaborate with server side/UI developers, and DBAs to develop end-to-end solution.</li><li>Strong on data analytics with executing SQL queries in different databases for example: Oracle, SQL, Mongo, PostgreSQL, hive/impala/spark to analyze data and fix data issue as and when required.</li><li>Strong experience on data structure.</li><li>Improving performance by twisting SQL queries.</li><li>Discovering areas of automation for making the business process more efficient.</li><li>Performing and documenting data analysis, data validation, and data mapping/design.</li><li>Proficient in SQL coding and Tuning.</li><li>Experience in systems analysis and programming of software applications</li><li>Good knowledge of Big Data querying tools, such as Hive and Impala.</li><li>Knowledge on Hadoop v2, MapReduce, HDFS, Pyspark, and Spark is plus but not mandatory.</li><li>Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements</li><li>Familiarity developing advanced reporting, analytics, dashboards, and other business-intelligence solutions using Tableau is a plus.</li><li>Familiarity with AWS cloud, prepare to migrate applications, services, and data to AWS.</li><li>Familiarity with ETLs, data migrations.</li><li>Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements</li></ul> Education:<ul><li>Bachelor’s degree/University degree or equivalent experience</li></ul>------------------------------------------------------Job Family Group: Technology------------------------------------------------------Job Family:Applications Development------------------------------------------------------Time Type:Full time------------------------------------------------------Primary Location:Irving Texas United States------------------------------------------------------Primary Location Full Time Salary Range:$107,120.00 - $160,680.00 In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental &amp; vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.------------------------------------------------------Most Relevant Skills Please see the requirements listed above.------------------------------------------------------Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------Anticipated Posting Close Date:Sep 10, 2025------------------------------------------------------Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review <a href="https://www.citigroup.com/citi/accessibility/application-accessibility.htm" target="_blank">Accessibility at Citi</a>. View Citi’s <a href="https://www.citigroup.com/global/eeo-aa-policy" target="_blank">EEO Policy Statement</a> and the <a href="https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf" target="_blank">Know Your Rights</a> poster.

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