GraphRAG Developer Challenge – Legal Document Processing (Prototype)Role: Senior RAG Systems Developer (Contract/Freelance)Compensation: $600 — paid only if you pass (> 95% benchmark)Timeline: 3–5 days from materials receipt to live demoPurpose: Technical evaluation for potential long-term hireFrontend/UI: None (backend prototype only)Contact: s.lilliu@revortis.com ObjectiveWe're seeking an expert in graph-based retrieval (GraphRAG) to build a high-accuracy prototype for legal document reasoning. This is a paid technical test that may lead to a long-term position. The goal is a true GraphRAG system featuring explicit knowledge-graph construction and traversal, multi-hop reasoning, agentic orchestration, and strong focus on retrieval accuracy and explainability.Materials Provided/docs/ → Pre-processed Markdown legal documents with metadata/sample_questions.Json → Example question format/sample_answers_rag.Json → Example answer formatDownload materials: https://drive.Google.Com/drive/folders/19ZQ6cZDIe3stu0DXbXoG6p-AEQwZWdCt?usp=drive_link (Benchmark uses unseen questions.)DeliverableImplement two functions in Python 3.12 (Poetry project):def ingest(document_paths: List[str]) -> None: """Ingest Markdown docs and build the knowledge graph."""def query(questions: List[str]) -> List[str]: """Return answers with Vancouver-style citations grounded in retrieved sources."""Requirements: No UI, no API keys provided. Any stack may be used. query(...) must support parallel execution (~400 questions in ≤60 min) and show a progress indicator. Test thoroughly for correctness and performance before the demo.Live DemoIn a 60-minute live session you will:Receive ~400 unseen questions.Run query(...) to produce /answers.Json.Explain your architecture: how the graph is built, traversed, and used to generate grounded answers.Only the developer(s) who wrote the code may present.EvaluationPassing requires an overall score above 95%, measured by (LLM as a judge): Faithfulness (grounded, no hallucinations), Relevance (retrieval matches intent), Completeness (covers key legal points), and Clarity (structured, legally coherent writing).Payment & Next StepsIf you pass, you'll receive $600 USD after verification of reproducibility and hand-over of the repo (codebase, Poetry lock, run instructions, brief tech note). Top performers may be invited to interview for a long-term paid role. Failure to pass or complete within 60 minutes = no payment (you keep your code).Key PrioritiesParallelization, graph-based reasoning, correctness, and explainability.Note for AgenciesWe will not engage in pre-contract discussions with agencies. If an agency wishes to propose a developer, communication will proceed only after that developer passes the benchmark test. This ensures time efficiency and direct technical validation.