Senior Machine Learning Engineer

About the role

We’re looking for a Senior Machine Learning Engineer to join Lightspeed’s Data Science Enablement team. The focus of the team is to build the tools, frameworks, and best practices that support building production ML / AI solutions at Lightspeed. An example of a data science use case is in collaboration with Lightspeed Capital. This group powers our lending products and helps small and medium businesses around the world access the funds they need to grow. Our ML models are at the core of how we decide how much capital to offer each customer, making this role critical to our mission of enabling entrepreneurs everywhere.

As a Senior ML Engineer, you will be a hands‑on technical leader , building and scaling the MLOps platform that powers our model lifecycle; from training to validation to deployment. You’ll collaborate closely with data scientists, ensuring they can move quickly and safely from experimentation to production. This is a role with high autonomy, technical ownership, and direct business impact .

Note : As a global company with employees and clients outside of Quebec, fluency in English as a working language is required for this position.

What you’ll be doing

• Design and implement scalable ML infrastructure , including data and model pipelines.
• Build and evolve the MLOps platform , enabling automation of the full ML lifecycle.
• Integrate leading ML frameworks and tools into Lightspeed’s ecosystem.
• Manage and optimize cloud‑based ML workloads, ensuring performance and cost efficiency .
• Partner with data scientists to streamline experimentation and deployment workflows.
• Monitor, maintain, and optimize model performance in production.
• Mentor teammates and promote best practices in ML engineering.

What we’re looking for

Experience deploying and monitoring ML models in the cloud.

Nice to have

Why you’ll love this role

What’s in it for you

…. And enjoy a range of benefits that will keep you happy, healthy and (not) hungry.

To all recruitment agencies : Lightspeed does not accept unsolicited agency resumes. If we have not directly engaged your company in writing to supply candidates for a specific vacancy, Lightspeed will not be responsible for any fees related to unsolicited resumes.

Lightspeed is a proud equal opportunity employer and we are committed to creating an inclusive and barrier‑free workplace. Lightspeed welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of this selection process.

Where to from here?

Obviously, this has to be mutually beneficial : we want you to step into a role you love, and we want to offer you a place you’re proud to come to every day. For a glimpse into our world check out our career page here.

Lightspeed is building communities through commerce, and we need people from all backgrounds and lived experiences to do that. We were founded in 2005, in Montreal’s gay village and our original members were all part of the LGBTQ+ community. The ethos of our business has been about inclusion from the very beginning, and we strive to provide a workplace where everyone belongs.

Who we are : Powering the businesses that are the backbone of the global economy, Lightspeed's one‑stop commerce platform helps merchants innovate to simplify, scale, and provide exceptional customer experiences. Our cloud commerce solution transforms and unifies online and physical operations, multichannel sales, expansion to new locations, global payments, financial solutions, and connection to supplier networks.

Founded in Montréal, Canada in 2005, Lightspeed is dual‑listed on the New York Stock Exchange (NYSE : LSPD) and Toronto Stock Exchange (TSX : LSPD). With teams across North America, Europe, and Asia Pacific, the company serves retail, hospitality, and golf businesses in over 100 countries.

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