On-site AI Backend Engineer (Python/AWS) — RAG & LLMs

Entech; Malvern (Chester County); Hybrid; USD 120,000 - 160,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

401(k)

20 days PTO

Job summary

Entech is seeking a Senior Full Stack Python Developer (AI and AWS Bedrock) for a hybrid role in Malvern, PA. You will design and implement AI-powered backend services and scalable APIs, integrating RAG pipelines and LLMs into enterprise applications.

Ideal candidates have 5–8+ years of experience, strong Python and AWS skills, and experience with AI/LLM services, vector databases, and secure cloud-native architecture. This is a direct employment opportunity with Entech.

Qualifications

• 5-8+ years of experience in software development preferably in a fintech/financial services context.
• Strong Python (full stack) and backend development experience.
• Hands-on experience with AWS services (Lambda, S3, API Gateway, Step Functions, IAM, CloudWatch).
• Experience building and managing RESTful APIs and microservices.
• Experience integrating AI/LLM services (Bedrock, Claude or similar).
• Understanding of Retrieval Augmented Generation (RAG) and AI orchestration patterns.
• Familiarity with LangGraph and vector databases for semantic search.

Responsibilities

• Design, develop and maintain AI-powered backend services for intelligent document processing and content generation.
• Build scalable APIs and microservices supporting document ingestion, transformation, and publishing workflow.
• Develop RAG pipelines and integrate LLMs into enterprise applications; build orchestration workflows using AWS (Lambda, Step Functions, S3, API Gateway, EventBridge).
• Design secure, scalable, and resilient cloud-native applications following AWS best practices.
• Develop data processing pipelines for structured/unstructured content, AI services, vector search, and enterprise data sources.
• Collaborate with architects, product owners, and business stakeholders to deliver AI-enabled solutions; ensure performance and reliability of backend systems.

Skills

Python (Full Stack)

AWS services

RESTful APIs & microservices

AI/LLM services

RAG

LangGraph

Vector databases & semantic search

Job description

Entech is seeking a Senior Full Stack Python Developer (AI and AWS Bedrock) for a hybrid role in Malvern, PA. You will design and implement AI-powered backend services and scalable APIs, integrating RAG pipelines and LLMs into enterprise applications.

Ideal candidates have 5–8+ years of experience, strong Python and AWS skills, and experience with AI/LLM services, vector databases, and secure cloud-native architecture. This is a direct employment opportunity with Entech.