What are the responsibilities and job description for the LangChain Engineer position at PTR Global?
Job Title: AI/ML Engineer
Duration: Contract to Hire
Location: Columbus, OH 43240 OR Plano, TX 75024 OR Jersey City, NJ 07310 (All days onsite)
***GC/ USC only*****
Must Have:
• AI/ML skillset - Java or python
• Building applications
Job Description:
• 10 plus years of software development experience (Java or Python).
• 2 plus years of hands-on experience building AI/ML applications in production.
• Strong proficiency with RAG architectures — chunking strategies, embedding models, vector stores (Pinecone, OpenSearch, pgvector, FAISS).
• Experience with AI orchestration frameworks: LangChain, LlamaIndex, Semantic Kernel, or CrewAI.
• Handson experience with AWS Bedrock, Anthropic Claude models, and model invocation APIs.
• Proven prompt engineering skills — system prompts, fewshot, chain-of-thought, tool use, structured outputs.
• Experience building conversational AI: chatbots (text) and voicebots (speechto-text, text-to-speech integration).
• Proficiency with AWS services (Lambda, Step Functions, API Gateway, S3, DynamoDB, SQS).
• Experience with CI/CD pipelines, containerization (Docker, ECS/EKS), and infrastructureas-code.
• Strong understanding of API design (REST, GraphQL), microservices architecture, and eventdriven systems.
• Familiarity with evaluation frameworks for LLM outputs.
• Experience with guardrails, content filtering, and responsible AI practices.