Brooklyn, NY, USA
Marcus C.
RAG and search infrastructure for content-heavy products
Open to offersHybridCohort · Technical
Skills
ClaudeChatGPTPythonTypeScriptWeaviatePostgres
Type of work
RAGagent building
Bio
Spent the last 18 months building the recommendation and semantic-search layer for a national news publication. Previously shipped infra at Spotify. Likes problems where the data is messy and the user's intent is ambiguous.
Currently · Senior Engineer, mid-size media company
Portfolio
3 itemsPDF
Semantic search rebuild
Write-up of how he replaced Elasticsearch with a hybrid retrieval stack.
Image
Latency benchmarks
Side-by-side p95 latency vs legacy system.
Video
Talk: 'When not to use RAG'
30-min conference talk from late 2025.
Video intro
References
“Marcus is the first engineer I've worked with who treats retrieval as an engineering problem, not a model problem.”
— Rachel Mendez · CTO, Beacon Media · Verified by Eduba