Elena Varga

I embed with customers to ship RAG and agent workflows on their data, with evals and handover playbooks so teams own the system after launch.

• Deployed document Q&A for a top-5 EU bank with citation-only answers
• Built field-service copilot reducing mean time to resolution by 28%
• Trained customer champions on prompt libraries and incident triage

1. Senior Solutions Engineer (AI)

   Northline Intelligence · 2022 — Present

   Led EU banking RAG rollout: multi-tenant ingestion, citation-only answers, human approval queue for outbound text, and immutable audit logs. Ran weekly golden-set evals; cut off-topic responses by 62% vs baseline chat. Built field-service copilot for utility technicians: offline-first mobile, tool-calling into work orders, and guardrails for safety-critical steps. Mean time to resolution down 28% in pilot regions. Onboarded customer champions: office hours, incident triage ladder, and versioned prompt packs in Git.

2. Backend Engineer

   Harborstack · 2018 — 2022

   Backend and data engineering for regulated clients: services in Python/Go, Postgres, Kafka. Shipped first internal LLM experiment program (sandboxed inference, PII scrubbing, access reviews).