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Mark Chen
Looking for a jobSenior Software Engineer
Senior software engineer at Instacart who built product search and AI integrations across retailer catalogs.
United StatesSenior Software Engineer at Instacart
Experience
Senior Software Engineer
Built search and AI integrations to help customers find relevant products across retailer catalogs. Led load testing, staged rollouts, and rollback planning for retrieval changes.
PostgreSQLPgvectorEmbeddingsSemantic SearchHNSWLLMQuery UnderstandingStructured OutputsTyped ToolsAuthenticationAuthorizationAudit LoggingLoad TestingStaged DeploymentsRollback PlanningPlatform Engineering
Senior Full Stack Engineer
Improved care-search backend services to help members find doctors using timely, reliable provider information. Optimized Go care-search services, reducing response latency from approximately 500 ms to 200 ms.
GoCachingCache InvalidationReconciliationsConcurrencyBatch ProcessingDeadline ManagementFallbacksTelemetryRequest TracingData consistency checksFreshness Monitoring
Software Engineer
Developed web experiences and supporting data pipelines, with a focus on feed functionality and application performance. Helped migrate legacy web experiences to React and server-side rendering.
ReactServer Side RenderingJavaScriptAPI IntegrationBatch ProcessingConcurrencyCachingFallbacksFeature FlagsStaged DeploymentsPerformance AnalysisRequest TracingKafkaS3Event Based Pipelines
Education
Loyola Marymount University
Bachelor of Science in Computer Science from Loyola Marymount University, completed in 2012.
Bachelor of Science in Computer Science from Loyola Marymount University, completed in 2012.