Senior Full-Stack Architect: React/Next.js & AI

Fastbreak.ai, Inc.; London; On-site; CAD 110,000 - 160,000; Full time

Benefits offered by this job

401(k) with employer matching

Health, dental, and vision benefits

Competitive salary and equity package

Job summary

Fastbreak AI, Inc. is seeking a Senior Full Stack Engineer to design and ship high-performance web applications across a React/Next.js frontend and Node.js/Express backend.

You’ll own architectural decisions, explain tradeoffs, and mentor teammates, shaping requirements with product managers and stakeholders. This role invites you to decide what to build, drive implementation end-to-end, and help integrate AI features.

Qualifications

• Strong proficiency with React.js and Next.js on the frontend.
• Solid Node.js and Express.js experience on the backend.
• Hands-on experience with AWS services (EC2, S3, Lambda, or similar).
• Experience designing and consuming RESTful APIs and working within a microservices architecture.
• Clear communication skills; you can translate technical tradeoffs for non-technical stakeholder.

Responsibilities

• Design and develop scalable, high-performance web applications using React, Next.js, and Express
• Own architectural decisions and be able to articulate the reasoning and tradeoffs behind them
• Integrate AI and LLM-powered features into production applications thoughtfully and with an eye toward reliability and user impact
• Collaborate with product managers and stakeholders to shape technical requirements from the ground up
• Diagnose and resolve complex bugs across the full stack
• Champion engineering best practices and help define how the team works at its best

Skills

React.js

Next.js

Node.js

Express.js

AWS

RESTful APIs

Microservices

CI/CD

Architectural decisions

Mentorship

Communication

Copilot

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Tools

Git-based workflows

Copilot

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Job description

Fastbreak AI, Inc. is seeking a Senior Full Stack Engineer to design and ship high-performance web applications across a React/Next.js frontend and Node.js/Express backend.

You’ll own architectural decisions, explain tradeoffs, and mentor teammates, shaping requirements with product managers and stakeholders. This role invites you to decide what to build, drive implementation end-to-end, and help integrate AI features.