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Senior Python Backend Engineer (RAG & AI Workflows)

BeaconFire Inc. United State
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AI Summary

Design and develop high-quality Python web applications and AI-driven RAG pipelines on Google Cloud/Vertex AI. Build agentic workflows, optimize performance, and ensure secure, scalable production deployments. Requires deep expertise in Python, Django/Flask, and advanced AI/ML tooling with a focus on retrieval, evaluation, and observability.

Key Highlights
Build and optimize RAG pipelines (chunking, embeddings, retrieval, reranking) on Google Cloud/Vertex AI
Develop agentic workflows with Python-first frameworks (LangChain, LlamaIndex, etc.) for tool use and structured outputs
Ship production-grade APIs with CI/CD, monitoring, cost/performance optimization, and security best practices
Key Responsibilities
Collaborate with the team to design and develop high-quality web applications using Python, Flask, and Django
Design and implement RAG pipelines on Google Cloud/Vertex AI, including chunking, embeddings, indexing, retrieval, reranking, and grounding
Build agentic workflows using Python-first frameworks for tool use, planning, reflection, and structured outputs
Perform code reviews, testing, and ensure code maintainability, reusability, and adherence to best practices
Create and maintain technical documentation for web applications and AI systems
Participate in project planning, estimation, and prioritization while staying updated on Python and AI technologies
Define and run evaluations (retrieval metrics, answer quality, hallucination checks) to improve system quality iteratively
Deploy APIs, monitor performance, optimize costs, and ensure security and observability in production environments
Technical Skills Required
Python Django Google Cloud Platform (GCP)
Benefits & Perks
Equal employment opportunities
Visa sponsorship provided
Nice to Have
Master’s Degree in Computer Science, Software Engineering, or related field
Experience with RESTful API development in Python
Experience with AWS services
Knowledge of knowledge graphs (entity linking, graph traversal + retrieval fusion)
Streaming/messaging (Pub/Sub, Kafka) and document pipelines (Document AI)
Experience with evaluation tooling (RAGAS, TruLens, custom eval harnesses)
Frontend integration (React/Next.js) or internal developer tooling

Job Description


Job 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 (tool use, planning, reflection/guardrails, structured outputs)

using Python-first frameworks.

● 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/grounding

checks), and improve system quality iteratively.

● Ship to production: APIs, monitoring/observability, cost/performance optimization, CI/CD,

and security best practices.


Requirement:

● Experience in software development in Python3.

● Decent understanding of the software development/testing life cycle.

● Knowledge of relational databases (e.g. MySQL, PostgreSQL, etc)slanguage skills

● Experience with version control tools, such as Git.

● Experience building RAG solutions (hybrid search, reranking, chunking strategies,

embeddings, prompt + schema design).

● Familiar with at least one agentic framework (e.g., LangGraph/LangChain, LlamaIndex,

Semantic Kernel, AutoGen) and tool/function calling patterns.


● Solid knowledge of vector search concepts and at least one vector DB in production.

● Strong engineering practices: code reviews, testing, telemetry, secure-by-design,

reliability mindset.


Preferred Qualifications:

● Master’s Degree in Computer Science, Software Engineering, or related field.

● 1+ year professional experience in Python web application development with either

Flask or Django.

● Experience in RESTful API development in Python.

● Understanding of Python web application frameworks such as Flask or Django.

● Experience with Cloud services, such as AWS.

● Experience with Vertex AI and GCP fundamentals (IAM, logging/monitoring, Cloud

Run/GKE, storage).

● Knowledge graphs for RAG (entity linking, graph traversal + retrieval fusion).

● Streaming/messaging (Pub/Sub, Kafka), document pipelines (Document AI), and

multilingual retrieval.

● Experience with evaluation tooling (RAGAS, TruLens, custom eval harnesses),

prompt/version management.

● Frontend integration (basic React/Next.js) or platform enablement (internal developer

tooling).

BeaconFire is an E-verified company and provides equal employment opportunities (visa

sponsorship provided).


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