<h2>We are looking for a Developer to join our Data Engineering team. The candidate will be responsible for designing and maintaining grammar using JavaCC, implementing processors and visitors, and developing business rules based on ASTs (Abstract Syntax Trees). This role also involves integrating with Apache Spark applications and working with data stored in Oracle, Hive, and HDFS.<br /><br /><b><u>Responsibilities:</u></b></h2><ul><li><h2>Design and implement grammars with JavaCC and integrate through Visitors.</h2></li><li><h2>Build and maintaing processors to execute rules based on ASTs.</h2></li><li><h2>Develop and optimize Java integrations with Apache Spark</h2></li><li><h2>Analyze, interpret, and optimize Spark DAGs to improve job performance and resources usage.</h2></li><li><h2>Work with Hive and Oracle to exatract and manipulate large datasets.</h2></li><li><h2>Manage and organize data in HDFS, ensuring performance and scalability.</h2></li><li><h2>Collaborate with team on code reviews, architecture discussions, and continuous improvements.</h2></li></ul><h2><br /><b><u>Qualifications:</u></b></h2><ul><li><h2>5-8 years of relevant experience</h2></li></ul><h2></h2><h2><b>Required Qualifications</b>:</h2><ul><li><h2>Strong experience with Java (preferably Java 8++).</h2></li><li><h2>Advanced knowledge of Apache Spark (DataFrames, job executions, DAG optimizations). </h2></li><li><h2>Hands-on experience with JavaCC (grammar creation, ASTs, visitors).</h2></li><li><h2>Proficiency in Hive and Oracle (queries, large-scale data manipulations).</h2></li><li><h2>Practical experience with HDFS (read/write operations, data organization).</h2></li><li><h2>Strong analytical and problem-solving skills.</h2></li></ul><h2></h2><h2><b>Nice to Have</b>:</h2><ul><li><h2>Experience in Big Data projects within regulatory or financial reporting contexts.</h2></li><li><h2>Knowledge of distributed ETL and data engineering best practices.</h2></li><li><h2>Experience with Unix/Linux and shell scripting (ksh/bash).</h2></li><li><h2>Familiarity with Maven and CI/CD practices.</h2></li></ul><h2><br /><b><u>Education:</u></b></h2><ul><li><h2>Bachelor’s degree/University degree or equivalent experience</h2></li></ul><h2></h2><h2><br />This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.</h2><h2></h2><p><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span>------------------------------------------------------</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></p><p><b><span>Job Family Group: </span></b></p>Technology<p><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span>------------------------------------------------------</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></p><p><b>Job Family:</b></p>Applications Development<p><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span>------------------------------------------------------</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></p><p><b><span>Time Type:</span></b></p>Full time<p><span><span>------------------------------------------------------</span></span></p><p><b>Primary Location Full Time Salary Range:</b></p>$94,300.00 - $141,500.00<p><span><span><span><span><span><span><span><span>------------------------------------------------------</span></span></span></span></span></span></span></span></p><p><b><span>Most Relevant Skills </span></b></p>Please see the requirements listed above.<p><span><span><span><span><span><span><span>------------------------------------------------------</span></span></span></span></span></span></span></p><p><b><span>Other Relevant Skills </span></b></p>For complementary skills, please see above and/or contact the recruiter.<p><span><span><span><span><span><span><span>------------------------------------------------------</span></span></span></span></span></span></span></p><p><i><span>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.</span></i></p><p><i><span> </span></i></p><p><i><span>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 </span></i><i><a href="https://www.citigroup.com/citi/accessibility/application-accessibility.htm" target="_blank">Accessibility at Citi</a><span>.</span></i><br /><br /><i><span>View Citi’s </span><a href="https://www.citigroup.com/global/eeo-aa-policy" target="_blank">EEO Policy Statement</a><span> and the </span><a href="https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf" target="_blank">Know Your Rights</a><span> poster.</span></i></p>