RAG AI Engineer: Python Web Apps

BeaconFire Inc.; Philadelphia (Philadelphia County); On-site; USD 110,000 - 160,000; Full time

Job summary

BeaconFire Inc. seeks an experienced Python web developer to build scalable web applications using Flask/Django. You will design RAG pipelines on Vertex AI, implement agentic workflows, and own code quality through reviews, testing, and documentation.

You will collaborate with cross-functional teams, estimate work, and stay current with Python technologies, while delivering robust APIs and production-grade features.

Qualifications

• Decent understanding of the software development/testing life cycle.
• Knowledge of relational databases (e.g. MySQL, PostgreSQL).
• Experience with version control tools, such as Git.
• Experience building RAG solutions (hybrid search, reranking, chunking, embeddings, prompt + schema design).
• Familiar with at least one agentic framework (e.g., LangGraph/LangChain, LlamaIndex, Semantic Kernel, AutoGen) and tool calling patterns.

Responsibilities

• Collaborate with the team to design and develop high quality Web applications using Python, Flask, Django, and related technologies.
• Write clean and efficient code, and ensure code maintainability and reusability.
• Design and implement RAG pipelines on Google Cloud / Vertex AI (chunking, embeddings, indexing, retrieval, reranking, grounding).
• Build agentic workflows using Python-first frameworks and ensure proper tool use, planning, reflection/guardrails.
• Perform code reviews to ensure code quality and consistency.
• Conduct testing to ensure application quality and reliability.
• Create and maintain technical documentation for web applications.
• Participate in project planning, estimation, and prioritization.
• Stay up to date with the latest technologies for Python development.
• Define and run evaluation (retrieval metrics, answer quality, hallucination checks), and improve system quality iteratively.
• Ship to production: APIs, monitoring/observability, cost/performance optimization, CI/CD, and security best practices.

Tools

Python/Web development (Flask/Django)

Git

RAG solutions

Agentic frameworks

Vertex AI / GCP

LangChain/LangGraph

LlamaIndex

Semantic Kernel

AutoGen

Pub/Sub / Kafka

Job description

BeaconFire Inc. seeks an experienced Python web developer to build scalable web applications using Flask/Django. You will design RAG pipelines on Vertex AI, implement agentic workflows, and own code quality through reviews, testing, and documentation.

You will collaborate with cross-functional teams, estimate work, and stay current with Python technologies, while delivering robust APIs and production-grade features.