Lead Developer

CarltonOne Engagement ULC•Markham, ON

3d•Onsite

About The Position

CarltonOne is a global B2B technology leader, and part of the Goldman Sachs portfolio, helping organizations around the world reward and inspire exceptional people. Our solutions empower employees to be more productive, sales teams to perform at their best, and customers to stay engaged and loyal. Our platform powers the global engagement industry, enabling companies to deliver impactful employee recognition, customer loyalty, rewards, sales, and channel incentive programs. We partner with over 450 clients, 500 vendors, and serve 14 million members across 185 countries. Beyond engagement, every CarltonOne solution drives our eco-action mission: funding tree planting to help restore the planet. To date, we’ve funded over 20 million trees and are on track to plant millions more each year. Learn more at carltonone.com [https://www.carltonone.com/]. About the Opportunity: As a Lead Developer, you will serve as a technical authority and hands-on leader across CarltonOne’s global platform. This role is responsible for guiding architecture, ensuring platform scalability, mentoring senior engineers, and setting engineering standards that support long-term growth. You will balance deep hands‑on development with strategic technical leadership, influencing how we design systems, modernize services, and responsibly adopt AI‑assisted development practices. You will collaborate closely with Engineering Leadership, Product, DevOps, and Architecture to solve complex problems and drive technical excellence across teams. This role is ideal for a seasoned engineer who enjoys solving hard problems, leading through influence, and raising the technical bar across an organization.

Requirements

8+ years of professional software development experience in modern web platforms
Demonstrated experience in senior, staff, or principal level engineering roles
Proven track record leading architecture and system design for large or complex applications
Experience influencing technical direction across multiple teams or domains
Strong proficiency in JavaScript/TypeScript, Node.js, and Vue.js or React
Deep experience building back-end services with NestJS
Advanced understanding of MySQL, relational data modeling, and performance optimization
Experience with Docker, containerized applications, and modern deployment workflows
Strong grasp of HTML5, CSS3, and modern JavaScript architectures
Ability to design, debug, and optimize distributed systems

Nice To Haves

Experience with GraphQL, Redis, Kafka, Kubernetes
Background in microservices architecture and Domain-Driven Design (DDD)
Exposure to PHP frameworks such as Zend, Laravel, Symfony, PHP Doctrine
Experience integrating or leading AI/ML tooling within engineering workflows
Experience working on globalized platforms (currencies, localization, compliance)

Responsibilities

Provide technical direction and architectural guidance across multiple product domains
Design and evolve scalable, secure, and high availability systems supporting global usage
Lead system design reviews, architectural decision-making, and modernization initiatives
Own and communicate architectural standards, patterns, and best practices
Identify technical risks and proactively guide mitigation strategies
Contribute production-quality code across critical services and shared platform components
Lead development of complex features using JavaScript/TypeScript, Node.js, NestJS, and Vue.js/React
Review and guide implementation of high-impact or high-risk changes
Support troubleshooting of complex production issues and system performance challenges
Champion secure development practices across the platform
Ensure solutions meet performance, reliability, and observability standards
Partner with DevOps on CI/CD pipelines, deployment strategies, and system monitoring
Advocate for automated testing, code quality tooling, and technical debt reduction
Mentor senior and team-lead engineers through design guidance, reviews, and coaching
Raise overall engineering capability through best practices, documentation, and knowledge sharing
Act as a technical escalation point for complex cross-team challenges
Influence engineering culture with a focus on quality, accountability, and continuous improvement
Champion responsible AI adoption across engineering practices
Establish standards for AI-assisted coding, refactoring, testing, and documentation
Ensure AI-generated output meets CarltonOne security, reliability, and maintainability standards
Evaluate and guide integration of AI tools that enhance productivity without compromising quality
Partner closely with Product, QA, UX, Data, and Operations stakeholders
Translate business and product goals into scalable technical solutions
Provide technical input into roadmap planning and long-term platform strategy