Build something people love Wealthsimple is Canada’s leading financial innovator. The company offers a full suite of simple, sophisticated financial products across managed investing, do-it-yourself trading, cryptocurrency, tax filing, spending and saving. Wealthsimple currently serves more than 4 million Canadians and holds over $155 billion in assets under administration.

The company was founded in 2014 by a team of financial experts and technology entrepreneurs, and is headquartered in Toronto, Canada. ML Platform & Infrastructure Team The Machine Learning Infrastructure & Platform team builds the foundational architecture powering AI and GenAI initiatives across Wealthsimple. We sit at the intersection of production MLOps and cutting-edge GenAI enablement.

As our AI footprint expands rapidly, our priority is evolving our robust MLOps foundations into a scalable, high-performance LLM serving and routing platform. We build self-serve systems that allow Data Scientists and Engineers to host open-source LLMs reliably, optimize inference latencies, manage GPU infrastructure, and benchmark model performance safely in production. We are looking for an experienced MLOps or ML Platform Engineer who is excited to pivot their deep background in model orchestration, serving, and platform tooling toward solving the unique challenges of LLM inference and infrastructure .

In this role, you will bridge the gap between traditional MLOps (model lifecycles, pipeline orchestration, serving infrastructure) and modern GenAI stack requirements (vLLM, GPU cluster management, intelligent model routing, and automated Evals). You will take end-to-end ownership of setting the technical direction for operating enterprise-grade LLM systems company-wide.

Turn MLOps expertise to GenAI: Transition traditional ML lifecycle and serving patterns into state-of-the-art LLM inference engines and GPU orchestration systems. LiteLLM integration)



to dynamically direct requests across managed cloud providers (AWS Bedrock) and self-hosted open-source models. Architect and manage high-performance GPU serving environments on Kubernetes using engines like vLLM, Ray, and Triton.

Build automated Evals and observability frameworks to empower engineers and data scientists to validate model quality, latency, and drift against production requirements. Empower self-serve ML across Wealthsimple: Partner with product engineering and data science teams to build framework-agnostic platform tooling that abstracts infrastructure complexity.

Drive cost & performance optimization: Improve price-performance across self-hosted and managed inference by optimizing capacity, utilization, batching, routing, and model selection while meeting quality and reliability objectives 7+ years of software engineering experience in ML Infrastructure, MLOps, ML Tooling, or Data Platform engineering. ~ Deep experience in MLOps/ML Platform practices: Proven track record building and operating self-serve ML platforms, model registry workflows, experiment tracking, or production serving infrastructure (Kubeflow, MLflow, Ray, Triton, SageMaker). ~ Advanced proficiency in Python, container orchestration via Kubernetes , infrastructure-as-code ( Terraform ), and cloud provider ecosystem (AWS). ~ Strong appetite to specialize in LLM serving: A genuine desire to leverage your existing MLOps skillset to tackle LLM-specific challenges (vLLM, model routing, prompt engineering tooling, vector databases, GPU memory optimization,



or LLM evaluation frameworks). ~ Backend performance & observability focus: End-to-end technical ownership: Proven capability to lead architectural roadmaps, guide multi-functional projects with high autonomy, and maintain complex platform systems for the long run. Direct experience serving open-source Large Language Models in production (vLLM, SGLang, TensorRT-LLM, Dynamo). Hands-on work with CUDA, GPU partitioning, or distributed inference frameworks (Ray Serve).

Container &

• Infrastructure: Kubernetes, Terraform, AWS GPU Infrastructure ML Serving &

• LLM Tooling: vLLM, Ray, Triton, LiteLLM, AWS Bedrock, MLflow, SageMaker Languages &

• Frameworks: Python, FastAPI, PyTorch Data &

• Streaming: Top-tier health perks and life insurance Long-term group savings with employer match, through Wealthsimple for Business 20 vacation days, 4 wellness days, and unlimited sick and mental health days per year* ✈️ Employee resource groups, including Rainbow (2SLGBTQ), Women of WS, and Black at WS Technology &

• Innovation at Wealthsimple: That means we're always looking for better ways to work — whether that's new tools, AI, or rethinking how we approach a problem. We don't expect you to have all the answers, but we do expect curiosity and a willingness to evolve alongside the products we're building.

Inclusion Statement: We're building products for a diverse world, and we need a diverse team to do it well. We strongly encourage applications from everyone, regardless of race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability status.

AI in Hiring: We may use artificial intelligence (AI) tools to support parts of our hiring process, such as reviewing applications, analyzing resumes, or assessing responses. If you have questions about how your data is used, reach out to us.

📌 Senior Software Developer, ML Platform & Infrastructure (Toronto)
🏢 Wealthsimple Technologies
📍 Toronto