Senior Software Engineer

FuseAI; San Francisco (CA); Remote; USD 170,000 - 230,000; Full time

Benefits offered by this job

Remote-first

Stock options

Competitive compensation

Job summary

FuseAI is hiring a Senior Full Stack Engineer to join a fast-paced, high-impact engineering team. You will work directly with the co-founder and CTO to shape the future of AI-powered sales automation while building world-class software.

The role involves architecting and delivering end-to-end features using React, Node.js, MongoDB, AWS, and microservices, with a focus on AI-driven applications. This remote-first opportunity offers stock options and competitive cash compensation.

Qualifications

• 3+ years of full-stack development experience.
• Experience with React, Node.js, MongoDB, and AWS.
• Proficient in microservices architecture and Chrome extensions.
• Thrives in an ultra-fast startup environment with daily shipping.
• Interest in Langchain or agent architectures is a plus.
• Strong English communication skills.

Responsibilities

• Architect, develop, test, and maintain end-to-end features across the stack (React, Node.js, MongoDB, AWS, microservices, Chrome extensions).
• Collaborate with the CTO and engineering team to ship features rapidly.
• Design scalable, high-performance AI-driven applications and optimize system performance.
• Experiment with AI agent architectures and Langchain is a bonus.
• Foster a culture of rapid iteration, learning, and engineering excellence.

Skills

React

Node.js

MongoDB

AWS

Microservices

Chrome extensions

Langchain

Job description

The Role

We’re looking for a Senior Full Stack Engineer to join our fast-paced, high-impact engineering team. You will work directly with our co-founder and CTO, an AI startup veteran with a successful exit, a decade of ML experience, and a Forbes 30 Under 30 recognition. As a core team member, you’ll have the opportunity to shape the future of AI-powered sales automation while building world-class software at breakneck speed.

What You’ll Do

Architect, develop, test, and maintain end-to-end features across our stack (React, Node.js, MongoDB, AWS, microservices, and Chrome extensions). Collaborate closely with the CTO and engineering team to build and ship features at the speed of light.Design and implement scalable, high-performance AI-driven applications. Optimize system performance, reliability, and scalability in a microservices architecture. Experiment with AI agent architectures (bonus points for Langchain experience). Contribute to a culture of rapid iteration, continuous learning, and engineering excellence.

What We’re Looking For

• 3+ years of experience in full-stack development, ideally with experience in React, Node.js, MongoDB, and AWS.
• Experience working with microservices architecture and Chrome extensions.
• Ability to thrive in an ultra-fast-paced startup environment where we ship daily.
• Passion for AI-driven automation and interest in Langchain or agent architectures is a big plus.
• Experience working with sales tools or GTM automation is a bonus.
• High agency with a bias for action and ownership.
• Strong communication skills with proficiency in English.

Why Join Us?

• Work directly with world-class founders. Get mentorship from elite technical leaders and be a core part of building something game-changing. Extreme impact.
• Your work will directly shape the future of AI-powered GTM automation.
• Remote-first. Work from anywhere with WiFi while collaborating with an all-star team.
• Y Combinator-backed. Join a company with strong venture backing, a high-growth trajectory, and massive market potential.
• Competitive compensation. Mix of stock plus cash options, because we want you to have skin in the game too.

This is not an average 9-to-5 job—this is a starship. If you’re ready to push boundaries, move fast, and build the future of AI-powered sales, we’d love to hear from you!