LangChain Engineer

Job Title: AI/ML EngineerDuration: Contract to HireLocation: 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 applicationsJob 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.