We are seeking a Senior AI Developer (Full-Stack) to build and validate AI-powered semantic matching features for a test intelligence platform used across multiple product lines. You will own end-to-end delivery from vector indexing and evaluation methodology to API and UI presentation.
Responsibilities
- Design the semantic match evaluation corpus with label definitions, sampling methodology, and adjudication rules
- Build and maintain a semantic vector index including gateway client integration, incremental embedding, HNSW indexing, and neighbor-query services
- Implement embedding backfill runs with throughput controls and spend governance across multiple datasets
- Implement semantic matching selection logic with off-until-measured gating and confidence-based routing
- Build a pipeline that converts high-confidence semantic matches into durable deterministic links
- Implement a direct delta observation route that derives change magnitude and area signals from content-level deltas
- Build an area-to-test translation bridge using LLM-assisted classification with batched calls,
structured outputs, versioned proposal sets, and budget limits
- Develop enrichment agents that classify and tag records and write results back to a unified data store
- Create a frontend presentation layer with ranked lists, score explanations, details views, override workflows, and export flows
- Implement calibration and settings surfaces that help QA teams interpret scores and thresholds
- Add degraded-run detection, channel health surfacing, and safety-net broadening rules to improve reliability
Requirements
- 3+ years Python backend experience with FastAPI or equivalent
- Vector database experience using PostgreSQL/pgvector, HNSW indexing, and similarity query design
- LLM API integration experience with batched calls, structured outputs, spend caps, and retry handling
- Embedding pipeline experience including text assembly, normalization, incremental embedding, and model/version stam
📌 Senior AI Developer (Argentina)
🏢 EPAM Systems
📍 Argentina
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