Full-stack AI Agent Engineer (LangChain) at DoubleO.ai

Location: Remote (Preference for India; open to South America & Europe time zones, flexible working hours)
Type: Full-time

DoubleO 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 a Full Stack AI Engineer to 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 where everyone 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.

What You’ll Do

• Build full-stack AI applications using Python, LangChain, and LangGraph;

• 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.

Who You Are

• 5–6 years of total software engineering experience, including full-stack development;

• Hands-on with AI tools: comfortable building with LLMs, LangChain, and RAG;

• 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.
  
  

What we offer

• 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.

Application deadline: ASAP.

Please note that the later you apply - the more intensive your selection process will be, for example, you will have less time for the test assignment, etc.

1. Fill in the application form - attach your CV and Github profile;

2. Have a Zoom interview with Hire5 Recruiter;

3. Complete a practical test assignment;

4. Have a Zoom interview with the CTO;

5. Have a Zoom interview with the Middle Engineer from the team;

6. Have a Zoom interview with the CEO;

7. Get hired!