Worked on the ElasticGraph repository to deliver two major backend features focused on data aggregation and analytics accuracy. Introduced an optional nested_context parameter to nested aggregations, enhancing the flexibility and correctness of nested field filtering while expanding RSpec test coverage and refining RBS type signatures. Added min_doc_count support for date histogram aggregations, reducing noise and optimizing performance through constructor adjustments. Improved code quality by performing linting cleanups and upgrading test infrastructure, including better use of instance_double for mocking. Utilized Ruby, Ruby on Rails, and GraphQL to ensure robust, maintainable code that supports more reliable analytics and streamlined backend performance.