Senior Full Stack Engineer

Neulinx; New York (NY); Hybrid; USD 190,000 - 250,000; Full time

Benefits offered by this job

Equity

Hybrid work

Unlimited PTO

Health insurance

Dental insurance

Vision insurance

401(k) matching

New York office

Job summary

Neulinx is seeking a Senior / Staff Full Stack Engineer (Applied AI) in New York City to build an AI-powered copilot and production-grade agents. This hands-on role offers significant ownership across the AI stack—from backend services to modern frontend apps—and close collaboration with Product and Design to bring AI features to production.

You’ll work with Python backends (Django/Flask), React or Angular, and LLM integrations, focusing on performance, reliability, and scalable tooling.

Qualifications

• 5+ years of full-stack software engineering experience.
• Hands-on experience with LLM-powered applications and AI tooling.
• Strong API design and relational database knowledge.

Responsibilities

• Build and scale production AI agents that automate workflows.
• Develop MCP tools, LLM integrations and agent orchestration frameworks.
• Design reliable tool-calling workflows with streaming responses and guardrails.
• Improve AI performance with observability and regression testing.
• Develop full-stack features across Python backend services and frontend apps.
• Collaborate with Product and Design to bring AI features to production.

Skills

Full-stack

React

Python

LLM experience

API design

Tools

Celery

Redis

Kubernetes

RabbitMQ

AWS

Job description

Senior / Staff Full Stack Engineer - Applied AI

New York City

$190,000-$250,000 + Equity | Hybrid working

Neulinx have partnered with a high-growth, Series D-backed TravelTech company that’s transforming the $100bn+ travel industry through technology and AI.

Following a recent $60m Series D funding round, the business is expanding its engineering team to build intelligent products that help thousands of travel entrepreneurs automate workflows, manage clients and scale their businesses.

We’re looking for a Senior / Staff Full Stack Engineer (Applied AI) to help develop an AI‑powered copilot, building production‑grade AI agents, orchestration systems and intelligent automation tools.

This is a hands‑on, product‑focused role offering significant ownership across the AI stack, from backend infrastructure and agent frameworks to user‑facing applications.

What you’ll be doing

• Building and scaling production AI agents that automate complex business workflows.
• Developing MCP tools, LLM integrations and agent orchestration frameworks.
• Designing reliable tool‑calling workflows, streaming responses, retries and guardrails.
• Building evaluation, observability and regression‑testing systems to improve AI performance.
• Developing full‑stack features across Python backend services and modern frontend applications.
• Working closely with Product and Design to take AI features from concept through to production.
• Improving latency, scalability and reliability across AI‑powered applications.

What we’re looking for

• 5+ years of full‑stack software engineering experience.
• 3+ years of React, React.js or Angular experience.
• 3+ years of Python backend development (Django, Flask or similar).
• Hands‑on experience building and deploying LLM‑powered applications.
• Strong API design, distributed systems and relational database experience.
• Experience with agentic AI, tool calling, MCP, RAG or LLM evaluation frameworks.
• Comfortable working with emerging AI technologies and taking ownership in a fast‑moving environment.

Bonus points for:

Anthropic/OpenAI APIs, agent orchestration, streaming infrastructure, Celery, Redis, RabbitMQ, AWS or Kubernetes.

What’s on offer

• $185,000-$235,000 base salary + equity
• Join a well‑funded TravelTech company investing heavily in Applied AI.
• Build AI products with genuine commercial applications and an established user base.
• Significant technical ownership and influence over AI architecture.
• Hybrid working from the company’s New York office.
• Unlimited PTO, healthcare, dental, vision and 401(k) matching.

Interested in building AI agents that solve real‑world problems rather than another proof of concept?