Full-stack AI Agent Engineer (LangChain)

Company: Hubstaff blog
Location: Los Gatos
Posted on: May 9, 2025

Job Description:

Full-stack AI Agent Engineer (LangChain) full timehttps://www.doubleo.ai/ exists to give non-technical people the superpowers of elite AI engineers. Born from years of experience building award-winning AI tools for product teams, we've developed a powerful platform that allows anyone to build intelligent automations - no coding required.Founded by leaders from Meta, Rippling, and PlayStation, and backed by top Silicon Valley investors, we're an engineering-led company pushing the boundaries of what AI can do in real business workflows.We're looking for aFull Stack AI Engineerto join our tightly-knit AI team. You'll build internal tools and customer-facing AI agents end-to-end - from back-end logic to UI, from prompt design to LangChain flows.You'll be part of a team whereeveryone is an AI engineer. We don't silo frontend/backend or infra/data. Instead, we move fast, write 50% of our code with AI tools, and ship useful agents that save users real hours every day.

• Build full-stack AI applications usingPython,LangChain, andLangGraph;
• Work on both internal workflows and external, user-facing agent tools;
• Develop and deploy RAG systems and LLM-powered agents;
• Own features end-to-end - from problem scoping and prompt design to database modeling and UI;
• Collaborate with a small, senior team to prototype quickly and ship constantly;
• Leverage AI tools to move faster and write better code.
• 5-6 years of total software engineering experience, including full-stack development;
• Hands-on with AI tools: comfortable building withLLMs,LangChain, andRAG;
• Hands-on experience. You still write and ship code daily. You're curious, fast, and obsessed with learning;
• Strong Python skills, with bonus points for exposure to React or similar front-end tools;
• Have 2-3 years of LangChain experience;
• Familiar with building intelligent workflows or automations, not just CRUD apps;
• Bonus: experience with cloud infra, vector DBs, or fine-tuning LLMs.
• Full-time job. Please note that we won't consider candidates planning to combine this job with another one.
• Remote work. You may be located in almost any country, just need a good Internet connection, a computer to work from, and the opportunity to adjust your working schedule for the team.
• Work with some of the brightest minds in AI from companies like Meta and Rippling.
• Join an early team with a massive impact on product and culture.
• Build things that people use immediately, not in quarters.
• Salary will be discussed during the interview. Paid in USD.
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Keywords: Hubstaff blog, San Jose , Full-stack AI Agent Engineer (LangChain), Sales , Los Gatos, California