Sr. Software Engineer

Position

Sr. Software Engineer (Front/Back End)

Summary

A growing startup IT company is seeking a highly skilled Senior Software Engineer to join their team. The ideal candidate will play a key role in designing, developing, and deploying API services powered by Large Language Models (LLMs) while integrating seamlessly with existing TypeScript-based backend systems.

Essential Duties

• Design, develop, and deploy a Python-based API server with LLM
• Build API endpoints using FastAPI
• Implement LLM workflows using LangChain/LangGraph libraries
• Develop vector search functionality with Qdrant DB
• Implement real-time communication with the frontend using WebSockets
• Effectively integrate with the existing TypeScript backend
• Optimize LLM functionality for performance and cost
• Collaborate with team members to improve the overall system

Working Hours, Working style

Monday - Friday; 8 hours a day

• Flexible schedule outside core hours
• Hybrid Remote

Working Location

Irvine, CA

Salary/Benefit

$100K - 140K DOE

• Health insurance
• Retirement plan (simple IRA)
• ​Paid time off (PTO) & sick leaveHolida

ysSaturd

ays, Sundays, and major US holidaysQualif

icationsBusine

ss-Proficiency in English (both spoken and written)Solid experience with Python development [Over 5 years]Experience integrating with LLMs (such as Azure OpenAI and Google Gemini)Knowledge of REST API design and implementationExperience with or willingness to learn the following technologies:FastAPI (API framework)LangChain/LangGraph (LLM workflow libraries)Vector databases (Qdrant preferred)WebSocket communication for real-time interactionsBasic TypeScript & React knowledge for seamless integration