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Added 1 month ago
PA
AI Software Engineer, Product
Palona AI
Toronto, ON
- Full-time
Our stack includes Python and FastAPI services, PostgreSQL, TypeScript, React and Next.js applications, real-time voice agents built with LiveKit, cloud infrastructure on AWS, and modern…
Added 1 month ago
B
Software Engineer - AI Developer Productivity
Baseten
Montreal, QC
- $165,000 to $330,000 USD / year
- Full-time
…applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production. We're growing…
Added 1 month ago
IC
Full Stack Developer
Infoya Career Connect
Vancouver, BC · Ottawa, ON · Toronto, ON · Waterloo, ON · Montreal, QC · ON
- $85,000 to $115,000 CAD / year
- Full-time
We are seeking a talented Full Stack Developer to design, develop, and maintain modern web applications. The ideal candidate will have experience building scalable frontend and backend…
Added 1 month ago
B
MarTech Developer
BrainStation
Toronto, ON
- $90,000 to $120,000 USD / year
- Full-time
As a MarTech Developer, you'll be tasked with working on a variety of client-facing marketing technology initiatives. Working within cross-functional project teams, your responsibilities…
Added 1 month ago
C
Senior Software Engineer
Clutch
Toronto, ON
- $160,000 to $200,000 USD / year
- Full-time
Continuously improve the systems, tools, and developer experience that power Clutch.
Added 1 month ago
F
Senior Security Engineer
Forma.ai
Toronto, ON
- $160,000 to $190,000 USD / year
- Full-time
Ability to write scripts using Python, Bash, PowerShell, or a similar language.
Added 1 month ago
PA
AI Infrastructure Engineer
Palona AI
Toronto, ON
- Full-time
Our current environment includes Python services, Docker, AWS and selected Azure services, ECS and Lambda workloads, API Gateway, load balancers, relational data systems,…
Added 1 month ago
PA
AI Modeling Engineer
Palona AI
Toronto, ON
- Full-time
Strong Python skills and experience with modern ML tooling such as PyTorch, JAX, Hugging Face, or equivalent systems
Added 2 months ago
FR
Analyst, Model Development Team (Quantitative Analyst) - Toronto
Fitch Ratings
Toronto, ON
- Full-time
Programming and model development experience in Python or Excel/VBA
Added 1 month ago
J
Senior Power System Studies Engineer
Jacobs
Calgary, AB
- $133,800 to $175,650 USD / year
- Full-time
Knowledge of programming languages to streamline studies using Python.
Added 1 month ago
VN
Solutions Architect, AI Systems
Viral Nation
Toronto, ON
- Full-time
Write and maintain working code (Python, SQL, APIs) to operationalize models and pipelines - doesn't need to be enterprise-grade, needs to run.
Added 1 month ago
J
Senior Power System Studies Engineer
Jacobs
Toronto, ON
- $133,800 to $175,650 USD / year
- Full-time
Knowledge of programming languages to streamline studies using Python.
Added 1 month ago
A
Manager, Software Development
AlayaCare
Montreal, QC · Greater Montreal Metropolitan Area
- Full-time
Added 2 months ago
E
Project Engineer -Water & Wastewater
EXP
Brampton, ON
- Full-time
Knowledge of scripting or automation tools (Python, MATLAB) for model enhancement.
Added 1 month ago
F
Senior Security Engineer
Forma.ai
Toronto, ON
- Full-time
Ability to write scripts using Python, Bash, PowerShell, or a similar language.
Added 1 month ago
P
Software Developer - Talent Community
Portfolio+
Whitchurch-Stouffville, ON
- Full-time
As a Software Developer with Portfolio+, you will play a key role in shaping and enhancing our financial software solutions, empowering customers to achieve their goals. Leveraging your…
Added 1 month ago
Gen AI Developer
Capgemini
Mississauga, ON
- Design develop and deploy AIML and Generative AI solutions using Python
Added 1 month ago
M
Automation Engineer
MDA
Sainte-Anne-de-Bellevue, QC
- Full-time
Knowledge of programming languages (Python, C#, SQL, C++, Java, VB (.NET), etc.) is an asset
Added 1 month ago
WT
Senior Software Developer, LLM Infrastructure
Wealthsimple Technologies
Remote, Canada
- $152,900 to $189,000 CAD / year
- Full-time
- Remote
Strong proficiency in Python and infrastructure tooling like Kubernetes and Terraform.
Added 1 month ago
J
Manager, Credit Risk
Jobber
Remote, Canada
- Full-time
- Remote
Proficiency in SQL and Python (or a similar language), enough to independently pull, analyze, and interrogate data and to collaborate credibly with Data Science and Analytics.
Added 1 month ago
V
Machine Learning Engineer Lead
Vancity
Vancouver, BC · Toronto, ON
- Full-time
Developing production-quality Python code, APIs, automation workflows, and machine learning services to integrate ML capabilities into business applications and processes
Added 1 month ago
PX
Data Scientist (AI/ML)
Project X
Toronto, ON
- Full-time
Proficiency in Python and SQL, with experience in data wrangling, statistical analysis, and model development
Added 1 month ago
A
Intern, AI Developer/ Stagiaire en développement IA
Autodesk
Montreal, QC
- Full-time
Expérience avec les frameworks d'apprentissage profond : PyTorch (de préférence), Tensorflow. Solides connaissances en C/C++ ou Python
Added 1 month ago
FB
Analyst, Data Analytics- Retail Financing (Fixed Term Contract)
Fairstone Bank
London, ON · Toronto, ON
- Full-time
Advanced proficiency in SQL, Python/R, and data visualization tools (Alteryx, Power BI - Tableau and asset)
Added 1 month ago
CI
Director of Business Intelligence & Analytics (Permanent)
CoreFactor Inc.
Toronto, ON
- Full-time
Proficiency in data visualization tools (e.g., Tableau, Power BI), statistical software (e.g., Python), and CRM platforms (e.g., Salesforce); with a strong working knowledge and…

Wealthsimple Technologies

Senior Software Developer, LLM Infrastructure

Remote, Canada

Remote

$152,900 to $189,000 CAD / year · Full-time

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Job details

Pay: $152,900 to $189,000 CAD / year
Job type: Full-time
Workplace: Remote
Experience: 6+ years of software engineering experience building production-ready distributed systems or data platform infrastructure.
Posting language: English
Posted: Aug 12, 2026

Original job description

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.

We're proud of what we've built - and we're just getting started. Read our Culture Manual and learn more about how we work.

Machine Learning Infrastructure Team

The Machine Learning Infrastructure team builds the core foundation powering AI and GenAI initiatives across Wealthsimple. As our AI footprint expands, our priority is building scalable, cost-effective infrastructure that enables high-performance inference using open-source models alongside vendor solutions. Our responsibilities are to:

Build and maintain infrastructure to host and serve open-source LLMs reliably on cloud/GPU systems.
Implement intelligent model-routing frameworks to optimize performance, cost, and latency.
Develop evaluation and benchmarking tooling (Evals) to test, validate, and compare model performance across use cases.
Set the technical direction for operating scalable LLM infrastructure company-wide.

The Role

As a Senior Software Engineer on the ML Infrastructure team, you will design and implement the core backend and infrastructure powering our AI systems. You will work closely with data scientists, platform engineers, and engineering leaders to scale our GenAI footprint efficiently and securely.

In this role, you will have the opportunity to:

Build model-routing architecture (e.g., LiteLLM integration) to dynamically direct requests across internal and external models.
Provision and manage high-performance GPU infrastructure for serving open-source LLMs.
Build evaluation frameworks (Evals) that enable engineers and data scientists to benchmark model quality against production requirements.
Drive key cost-optimization and infrastructure efficiency initiatives without sacrificing system accuracy or reliability.

We are looking for people who have:

6+ years of software engineering experience building production-ready distributed systems or data platform infrastructure.
Strong proficiency in Python and infrastructure tooling like Kubernetes and Terraform.
Proven experience designing and operating highly performant, observable backend systems.
Practical experience or deep familiarity with the modern AI ecosystem (e.g., serving open-source models, vLLM, Ray, model routing, or evaluation frameworks).
Track record of owning technical projects end-to-end with high autonomy.

Our stack includes:

Container & Infra: Kubernetes, Terraform, AWS GPU infrastructure
Languages & APIs: Python, FastAPI
LLM Tooling & Serving: LiteLLM, vLLM, Ray, Bedrock
Data & Streaming: Kafka, Postgres, Redshift, Snowflake

Why Wealthsimple?

🌸 Top-tier health benefits 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

✈️ 90 days away: work outside Canada for up to 90 days per year

👥 Employee resource groups, including Rainbow (2SLGBTQ), Women of WS, and Black at WS

🌎 We are a hybrid team with over 1,500 employees across North America. The people are one of the best parts of working here: you'll collaborate with incredibly talented, curious, and driven teammates who are deeply committed to doing great work.

ICYMI

Technology & Innovation at Wealthsimple: We move quickly and build thoughtfully. 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.

Accessibility Statement: We're committed to an accessible hiring experience. If you need any accommodations throughout the interview process, please let us know - we'll work with you to make sure you have what you need. We also welcome any feedback on how we can better accommodate candidates with accessibility needs.

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. These tools assist our team but don't replace human judgment – all final hiring decisions are made by people. If you have questions about how your data is used, reach out to us.

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More about this job

Responsibilities

Build and maintain scalable infrastructure to host and serve open-source LLMs while implementing intelligent model-routing frameworks. Develop evaluation and benchmarking tooling to validate model performance and drive cost-optimization initiatives.

Requirements

Requires 6+ years of software engineering experience in building production-ready distributed systems or data platform infrastructure. Strong proficiency in Python, Kubernetes, and Terraform is essential, along with practical experience in the modern AI ecosystem.

Skills

Python
Kubernetes
Terraform
Distributed systems
Data platform infrastructure
LLM infrastructure
Model routing
Evaluation frameworks
GPU infrastructure
vLLM
Ray
FastAPI
AWS
Kafka
Postgres
Snowflake

Benefits

Health benefits
Life insurance
Long-term group savings with employer match
20 vacation days
4 wellness days
Unlimited sick and mental health days
90 days away work program
Equity compensation

Visa sponsorship

Not detected in the job text

Keywords

Software Engineering
LLM
Infrastructure
Machine Learning
GenAI
Distributed Systems
Python
Kubernetes
Terraform
AWS
GPU
LiteLLM
vLLM
Ray
FastAPI
Kafka
Postgres
Redshift
Snowflake
Model Routing
Benchmarking
Evals
Backend
Cloud
Data Platform
Cost Optimization
Scalability
Reliability
Inference
Financial Technology

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