We are looking for a Lead AI Developer to build an MVP test-intelligence platform that helps QA teams trust AI-driven semantic matching and classification across two game franchises. You will own AI/ML features end-to-end, including evaluation methodology and a data-heavy UI that explains scores and confidence.
Responsibilities
- Design and deliver end-to-end AI/ML application features across backend, evaluation harnesses, and frontend surfaces
- Build and maintain a semantic vector index service including gateway client integration, incremental embedding, normalization, HNSW indexing, and neighbor-query APIs
- Implement embedding backfill runs for multiple content streams with throughput controls and spend governance
- Design an evaluation corpus for semantic matching including label definitions, sampling methodology, and adjudication rules
- Run labeling passes and measure precision across confidence thresholds to set and validate gating criteria
- Implement a measured-confidence semantic matching route with off-until-measured gating and safety checks




- Build a semantic-to-deterministic link conversion pipeline that promotes high-confidence matches into durable links
- Implement a direct-delta observation route that derives signals from content-level changes when metadata links are sparse
- Develop an area-to-test translation bridge using LLM-assisted classification with batched calls, structured output, spend limits, and versioned proposal sets
- Create enrichment agents that classify and tag records and write results back into the unified data store
- Build a presentation layer with ranked test lists, reason chains, score breakdowns, overrides, and export flows
- Implement degraded-run detection, channel-health surfacing, and safety-net broadening rules for reliable operation

Requirements
- 5+ years Python backend experience with FastAPI or equivalent frameworks
- 1+ years of relevant leadership experience
- Vector search experience with pgvector, HNSW index ma

📌 Lead AI Developer (Argentina)
🏢 EPAM Systems
📍 Argentina