Full Stack Engineer

Exchange Solutions; Toronto; On-site; CAD 120,000 - 160,000; Full time

Job summary

Exchange Solutions in Toronto seeks a Senior Full-Stack Engineer to own features across a Next.js/React frontend and an AWS serverless backend. You will leverage Claude Code and similar AI tools to plan, implement, review, and refine production-ready software, ensuring security, quality, and maintainability.

You will mentor engineers, collaborate with Product, QA, UX, Security, and Cloud teams, and contribute to AI governance and architecture discussions while modeling DynamoDB data for

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related discipline.
• 5+ years of full-stack software development experience.
• Expertise in TypeScript, React, and Next.js.
• Strong AWS serverless experience (Lambda, API Gateway, DynamoDB).
• Experience with Infrastructure as Code (CloudFormation, CDK, SAM, or Terraform).
• Practical knowledge of DynamoDB data modelling and event-driven architectures.
• Experience using AI-assisted coding tools such as Claude Code, Cursor, or GitHub Copilot.
• Strong testing, code review, and software quality practices.
• Experience mentoring developers and collaborating across technical teams.

Responsibilities

• Own features end-to-end across the React/Next.js application and AWS serverless platform.
• Use Claude Code and similar AI coding tools to plan, implement, review, and refine production-ready software.
• Develop effective prompts, validate AI-generated code, and ensure security, quality, and maintainability.
• Promote AI-assisted engineering best practices across the team.
• Build and maintain TypeScript, React, and Next.js applications.
• Design and implement serverless AWS solutions using Lambda, API Gateway, DynamoDB, and Infrastructure as Code.
• Develop scalable, event-driven services supporting enterprise loyalty platforms.
• Apply unit, integration, and end-to-end testing practices.
• Participate in test-driven development and continuous integration workflows.
• Monitor production systems and support continuous improvement.
• Mentor engineers and perform high-quality code reviews.
• Collaborate with Product, QA, UX, Security, and Cloud Engineering teams.
• Contribute to engineering standards, architecture discussions, and AI governance.
• Model DynamoDB data effectively using access patterns and single-table design.
• Support Infrastructure as Code using CloudFormation, CDK, SAM, or Terraform.

Skills

TypeScript

React

Next.js

AWS serverless

DynamoDB

AI-assisted coding tools

CI/CD

Testing

Mentoring

Education

Bachelor's degree in Computer Science or Software Engineering

Tools

CloudFormation

CDK

SAM

Terraform

Job description

Reports To: Engineering Manager (or Director, Engineering)

Location: Toronto

Type: Full-time

Role Overview

Exchange Solutions is building an AI-first, API-driven loyalty platform supporting high-volume, multi-tenant enterprise retail programs across North America. The Senior Full-Stack Engineer operates within an AI-augmented engineering environment, using agentic development tools such as Claude Code as a core part of the software development lifecycle. This role owns the design, development, testing, deployment, and operational excellence of scalable full-stack solutions across a Next.js/React frontend and serverless AWS backend, while helping establish best practices for AI-assisted software engineering.

Primary Responsibilities

1. AI-Augmented Software Development

• Own features end-to-end across the React/Next.js application and AWS serverless platform.
• Use Claude Code and similar AI coding tools to plan, implement, review, and refine production-ready software.
• Develop effective prompts, validate AI-generated code, and ensure security, quality, and maintainability.
• Promote AI-assisted engineering best practices across the team.

2. Full-Stack Application Development

• Build and maintain TypeScript, React, and Next.js applications.
• Design and implement serverless AWS solutions using Lambda, API Gateway, DynamoDB, and Infrastructure as Code.
• Develop scalable, event-driven services supporting enterprise loyalty platforms.

3. Quality, Testing & DevOps

• Apply unit, integration, and end-to-end testing practices.
• Participate in test-driven development and continuous integration workflows.
• Monitor production systems and support continuous improvement.

4. Technical Leadership & Collaboration

• Mentor engineers and perform high-quality code reviews.
• Collaborate with Product, QA, UX, Security, and Cloud Engineering teams.
• Contribute to engineering standards, architecture discussions, and AI governance.
• Model DynamoDB data effectively using access patterns and single-table design.
• Support Infrastructure as Code using CloudFormation, CDK, SAM, or Terraform.

Capability Requirements – education, skills & experience

• Bachelor's degree in Computer Science, Software Engineering, or related discipline.
• 5+ years of full-stack software development experience.
• Expertise in TypeScript, React, and Next.js.
• Strong AWS serverless experience (Lambda, API Gateway, DynamoDB).
• Experience with Infrastructure as Code (CloudFormation, CDK, SAM, or Terraform).
• Practical knowledge of DynamoDB data modelling and event-driven architectures.
• Experience using AI-assisted coding tools such as Claude Code, Cursor, or GitHub Copilot.
• Strong testing, code review, and software quality practices.
• Experience mentoring developers and collaborating across technical teams.
• Experience with multi-tenant SaaS, CI/CD, observability, loyalty, retail, or high-volume transactional systems is an asset.