Full-stack AI Agent Engineer (LangChain)

Hubstaff blog; Los Gatos (CA); Remote; USD 100,000 - 160,000; Full time

Job summary

An innovative company is seeking a Full Stack AI Engineer to join their dynamic AI team. This role involves building cutting-edge AI applications, from backend logic to user interfaces, using tools like Python and LangChain. You'll collaborate with talented engineers to create impactful solutions that streamline workflows and enhance productivity. This position offers the opportunity to work remotely, allowing you to contribute from anywhere while being part of a forward-thinking team that prioritizes rapid development and real-world applications. If you're passionate about AI and eager to make a difference, this is the perfect opportunity for you.

Qualifications

• 5–6 years of software engineering experience, including full-stack development.
• Hands-on with AI tools and building intelligent workflows.

Responsibilities

• Build full-stack AI applications using Python, LangChain, and LangGraph.
• Develop and deploy RAG systems and LLM-powered agents.

Skills

Python

LangChain

LLMs

RAG

React

Tools

LangGraph

cloud infrastructure

vector databases

Job description

Full-stack AI Agent Engineer (LangChain) full time

https://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.