Phillip Beltre

Experience

1. Senior Software Engineer

   Yahoo

   Jun 2024 — Present

   Content Platform Engineering & GraphQL• Designed and optimized large-scale GraphQL APIs powering Yahoo’s Networkcontent platform, integrating Apollo Federation, complex resolver logic, andautomated hydration of content, assets, and metadata across multiple AWS regions.• Implemented internal content schemas (LightYear) and integrated withmulti-region OpenSearch clusters, enabling fast content retrieval, dynamicclassification, and schema-driven data contracts.OpenSearch & Distributed Search Infrastructure• Designed, migrated, and optimized OpenSearch indices for content, tags, andprovider metadata (100M+ docs), including alias swapping, rollover, and slim indexstrategy for improved latency and query performance.• Built performance monitoring dashboards (CloudWatch, OTel, Splunk) to analyzequery “took” vs client-side execution latency, enabling root cause detection ofindexing hotspots and cluster coordinator node bottlenecks.Flink Streaming & ETL Engineering• Refactored AWS Glue-based ETL into modular Apache Flink streaming pipelines forcontent ingestion, JSON transformation, OpenSearch indexing, and DLQ handling —supporting parallel ingestion of millions of records.• Implemented schema-based dynamic field extraction, OpenSearch mappinggeneration, and DLQ recovery strategies in Flink on Amazon Managed Service forApache Flink.Test Automation & CI/CD• Developed comprehensive GitHub Actions pipelines including pytest, coverageenforcement, schema validation, containerized test environments (Redis,OpenSearch, MySQL) using testcontainers.Documentation, Runbooks & Cross-Team Leadership• Authored multiple Confluence runbooks on OpenSearch maintenance, trafficshifting, resolver caching strategy, Flink architecture, and Apollo Federation schemaoptimization.• Coordinated cross-squad engineering efforts (NetworkAPI, Content Gateway,Creation Squad, Pipeline Squad) to align ingestion, schema mapping, and contentvalidation workflows.

Education

• Syracuse University

  Bachelor of Arts - BA, Economics

  2012 — 2014

• Metis

  Data Science

  2019 — 2019

• Cardinal Hayes High School

  New York State Regents Diploma

  2006 — 2010

Skills

• Team-Oriented
• Microsoft Access
• Microsoft Word
• Access
• Teaching
• Research
• Social Media Outreach
• Hyperion Hfm
• Smartview
• Public Speaking
• Spanish
• Microsoft Excel
• Spanish-Speaking
• Social Media
• Community Organizing
• Microsoft Powerpoint
• Community Service
• Event Planning
• Teamwork
• Tutoring
• Leadership
• Customer Service
• Microsoft Office
• Cpr Certified
• Curriculum Design