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.