Full Stack Software Engineer I
American Express
Sunrise, FL, United States of America • 14m ago • On-site
Junior
On-site
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Quick Facts
Role: Full Stack Software Engineer I
Description
A motivated, hands-on Full Stack Software Engineer is needed to build scalable, enterprise-grade applications that combine Python backend development with Generative AI and Agentic AI. Responsibilities include designing RESTful APIs, working with relational and NoSQL databases, and implementing LLM-based solutions such as RAG pipelines, vector search, and agentic workflows. The role emphasizes testing, debugging, documentation, and secure coding practices.
Responsibilities
Design, develop, test, and maintain Python applications and backend services
Build and integrate RESTful APIs using FastAPI or Flask
Write clean, modular, reusable, maintainable code; implement unit tests, logging, and error handling
Develop SQL queries, manage schemas, and perform basic query optimization for relational databases
Implement data ingestion, retrieval, and integration workflows for NoSQL databases
Build GenAI applications using LLMs, including RAG pipelines and vector database-based retrieval
Handle document ingestion, chunking, embeddings, semantic search, and retrieval workflows
Integrate LLM APIs and perform prompt engineering
Develop agentic AI agents and workflows with tool calling and external system integration
Use LangChain, LangGraph, or similar frameworks for agent orchestration and workflow automation
Evaluate agent performance, reliability, and response quality
Use Git for version control and collaborate via code reviews in Agile teams
Write technical documentation and support application troubleshooting
Follow secure coding practices and data privacy requirements
Requirements
Bachelor’s degree in Computer Science/Software Engineering/Information Technology or related field, or equivalent practical experience
1–3 years of enterprise software development experience using Python
Strong Python fundamentals (OOP, data structures) and API development
Hands-on experience with at least one relational database and one NoSQL database
Working knowledge of SQL, database design, and data retrieval
Practical experience integrating LLMs into Python applications
Understanding of embeddings, vector databases, semantic search, and RAG architectures
Familiarity with frontier and open-source LLMs
Basic understanding of agentic AI concepts (tool calling, workflow orchestration)
Experience using Git and common development tools
Knowledge of Docker and CI/CD pipelines and deployment practices
Strong problem-solving, debugging, and communication skills
Employment eligibility to work in the United States (no visa sponsorship)
Benefits
Opportunity to work with modern AI technologies and contribute to enterprise-grade software applications
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