Apply on Kit Job: kitjob.ca/job/2fssgm

We are a global media and tech company that connects people to their passions. We reach nearly 900M people around the world, bringing them closer to what they love—from finance and sports to shopping, gaming and news—with the trusted products, content, and tech that fuel their day.

About the Role

We are looking for a Senior Machine Learning Engineer to design and scale personalization systems that power contextual ad rendering and recommendation experiences.

This role focuses on building production-grade, low-latency ML systems that leverage user signals and smart insights to improve relevance, engagement, and yield—while maintaining strong privacy, security, and compliance standards.

What You’ll Do

- Design and implement scalable end-to-end ML systems and infrastructure for personalization and ranking use cases
- Build and optimize classification, ranking, and contextual models
- Develop and productionize models with ownership across the full ML lifecycle (training, evaluation, deployment, monitoring)
- Build and maintain ML pipelines, feature stores, and model monitoring systems
- Optimize ML systems for low-latency, high-availability production environments
- Improve model and system performance (latency, throughput, quantization, pruning, system bottlenecks)
- Develop privacy-safe data pipelines and ensure secure handling of sensitive user signals
- Support experimentation frameworks (A/B testing) to improve business metrics such as engagement and yield




- Partner with cross-functional teams to deliver reliable, scalable ML solutions at scale

Required Qualifications

- 6+ years of experience in Machine Learning Engineering or ML Systems Engineering
- Recent hands-on experience designing and deploying scalable ML systems (within last 12 months)
- Strong experience with:

-Machine learning algorithms and statistical modeling

-Recommendation systems, ranking, or contextual personalization

-End-to-end model lifecycle management in production

-ML infrastructure, pipelines, and monitoring

- Experience optimizing ML inference for performance and scale
- Robust programming skills in Python (Java is a strong plus)
- Hands-on experience with Tensor Flow or PyTorch
- Experience with distributed systems, streaming architectures, or high-availability microservices
- Experience with containerization and orchestration tools (Docker, Kubernetes)
- Knowledge of CI/CD and infrastructure tools

Nice to Have

- GCP ML Tech stack
- Experience with IaC
- Experience in AdTech, large-scale consumer platforms, or marketplace systems
- Experience operating ML systems in PII-heavy or regulated environments
- Familiarity with privacy-preserving ML techniques (tokenization, anonymization, differential privacy)
- Experience optimizing models for revenue, CTR, or conversion metrics

Engagement Highlights:

-Commitment: Full-time (40 hr/week) preferred

-Client will provide a laptop for this engagement

-Required Overlap: 6 hours with PST

Apply on Kit Job: kitjob.ca/job/2fssgm

📌 Machine Learning Engineer (Canada)
🏢 Toptal
📍 Canada