Lead AI Engineer - LangChain & GenAI Delivery Lead

Focused; United States; Hybrid; USD 175,000 - 250,000; Full time

Job summary

Focused is seeking an hands-on, full stack engineer to drive AI-powered software for diverse clients. You will lead delivery across backend services and modern web UIs, mentor developers, and shape engineering culture.

You will work closely with clients and internal teams, practicing TDD and continuous improvement. You’ll bring experience with LangChain, LangGraph, LangSmith, and multiple languages (Python, Node, React/Next.js) to architect and implement scalable solutions while staying focused

Qualifications

• Hands-on full stack engineer with agile experience.
• Experience with LangChain or similar agentic frameworks.
• Experience leading engineering teams and mentoring.
• Commitment to code quality, TDD, and pairing.
• Experience across multiple languages/frameworks.

Responsibilities

• Engage with clients and provide expertise via pair programming on LangChain apps.
• Deep expertise in LangChain, LangGraph and LangSmith.
• Lead teams through end-to-end delivery across the stack, from backend services to modern web UIs.
• Pair program daily with teammates and clients to share knowledge, improve code quality, and grow together.
• Practice TDD and continuous refactoring to ensure code is reliable, maintainable, and understandable.
• Guide architecture decisions to support scalability, observability, and performance.
• Collaborate closely with designers, product managers, and stakeholders to continuously deliver valuable software.
• Coach developers on the team through pairing, mentoring, and modeling healthy engineering culture.
• Influence technical direction beyond the team, working across client orgs and Focused’s internal practices to share lessons, shape approaches, and raise the collective bar.
• Stay curious through experimenting with new patterns in the GenAI space, share what works (and what doesn’t), and help evolve how we build AI-powered software.

Skills

Full stack engineering

Team leadership

TDD / pairing

LangChain experience

Cross-functional collaboration

Tools

LangChain

LangGraph

LangSmith

Python

Node/JavaScript

React/Next.js

Job description

Focused is seeking an hands-on, full stack engineer to drive AI-powered software for diverse clients. You will lead delivery across backend services and modern web UIs, mentor developers, and shape engineering culture.

You will work closely with clients and internal teams, practicing TDD and continuous improvement. You’ll bring experience with LangChain, LangGraph, LangSmith, and multiple languages (Python, Node, React/Next.js) to architect and implement scalable solutions while staying focused