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Added 1 month ago
Senior, AI & Data Science
Welcome to the Jungle
Montreal, QC
…analysts, and digital experts to solve complex business challenges with pragmatic, production-ready…
Added 1 month ago
FG
Lead Software Engineer, Full-Stack Applications - Ratings Technology
Fitch Group
Toronto, ON
- $180,000 to $220,000 CAD / year
Fitch Ratings is seeking a Lead Software Engineer to join our global Ratings Technology team in Toronto. This is an opportunity to build mission-critical platforms while helping shape the…
Added 2 months ago
W
Senior Software Developer, LLM Infrastructure
Wealthsimple
Canada
- Full-time
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…
Added 1 month ago
AI & Agentic Engineer, Senior
Welcome to the Jungle
Montreal, QC
Artefact is looking for a Senior AI & Agentic Engineer: a full-stack engineer who takes AI features from idea to production.
Added 1 month ago
PI
AI Engineer (Agentic Workflows)
Protocase Inc./45Drives Ltd.
NS · Sydney, Nova Scotia
- Full-time
Position Title: AI Engineer (Agentic Workflows)
Added 1 month ago
TR
Lead Cloud Platform Engineer, Azure
Thomson Reuters
Toronto, ON · Canada, Toronto, Ontario
- Full-time
This is a hands-on senior individual contributor position with broad technical authority. You will write Bicep, operate and improve our AKS footprint, review other people’s infrastructure…
Added 1 month ago
T
Senior/Staff Software Engineer, Data Platform
Terminal
Toronto, ON
- $200,000 to $295,000 CAD / year
- Full-time
…together in person in Toronto, combining early-stage speed with late-stage maturity while processing many terabytes of vehicle data every…
Added 1 month ago
H
Senior Software Engineer, Machine Learning
Hive
Remote, Canada
- $123,600 to $187,900 USD / year
- Full-time
- Remote
As a Senior Data Engineer, you’ll play a vital role in evolving our data platform, which directly determines what our customers can do, how fast our product moves, and how confidently…
Added 1 month ago
C
Senior Software Engineer
Clutch
Toronto, ON
- $160,000 to $200,000 USD / year
- Full-time
Have experience with one or more modern programming languages such as TypeScript, Python, Go, Java, C#, Rust, or Ruby.
Added 1 month ago
F
Senior Security Engineer
Forma.ai
Toronto, ON
- $160,000 to $190,000 USD / year
- Full-time
As a Senior Security Engineer, you will be a hands-on technical leader strengthening security across Forma's application, cloud infrastructure, development lifecycle, internal systems, and…
Added 1 month ago
J
Senior Power System Studies Engineer
Jacobs
Calgary, AB
- $133,800 to $175,650 USD / year
- Full-time
As a power system studies engineer, you will closely work with regional and global power systems teams to support and/or lead ongoing projects as well as business development and proposal…
Added 1 month ago
J
Senior Power System Studies Engineer
Jacobs
Toronto, ON
- $133,800 to $175,650 USD / year
- Full-time
As a power system studies engineer, you will closely work with regional and global power systems teams to support and/or lead ongoing projects as well as business development and proposal…
Added 1 month ago
F
Senior Security Engineer
Forma.ai
Toronto, ON
- Full-time
As a Senior Security Engineer, you will be a hands-on technical leader strengthening security across Forma's application, cloud infrastructure, development lifecycle, internal systems, and…
Added 1 month ago
E
Senior AI Platform Engineer
Epiq
ON
- Full-time
…collections range from thousands to millions of records. As a Senior AI Platform Engineer, you will design and build the platform our AI agents and accelerators run on, including…
Added 1 month ago
WT
Senior Software Developer, LLM Infrastructure
Wealthsimple Technologies
Remote, Canada
- $152,900 to $189,000 CAD / year
- Full-time
- Remote
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…
Added 1 month ago
H
Senior Firmware and Embedded Software Engineer
Humanoid
Burnaby, BC
- Full-time
Strong proficiency in C and C++, with experience using Python for testing or tooling
Added 1 month ago
Senior Software Engineer, Recommendations
Lyft
Toronto, ON
Lyft is looking for software engineers from a scope of disciplines. We are growing our team with people who want to build, improve and incorporate technologies that make the lives of our…
Added 1 month ago
E
Senior DevOps Engineer
e-STORAGE
Kitchener, ON
- Full-time
We are seeking a talented Sr DevOps Engineer to join our dynamic team and contribute to the delivery of on-site and cloud-based Energy Management System (EMS) for utility grade systems. The…
Added 1 month ago
S
Applied Artificial Intelligence Engineer
SJC
Toronto, ON · North York, ON
- $110,000 to $130,000 CAD / year
- Full-time
Senior engineering ability: Write clean, documented code (Python, Go, JavaScript, etc.) and use agentic coding tools (Claude Code, Codex, Cursor, Hermes) as a core part of your development…
Added 1 month ago
XR
Senior AI - Computer Vision Engineer
XYZ Reality
Remote, Canada
- Full-time
- Remote
We’re looking for a Senior AI / Computer Vision Engineer with deep expertise in 3D computer vision and spatial AI to join the team and help develop the next generation of perception…
Added 1 month ago
S
Senior Ethical Hacker
Stantec
Toronto, ON
- Full-time
Engineer custom Python, Terraform, and Ansible extensions to enable specialized security and
Added 1 month ago
Senior Software Engineer, Full-Stack Applications (Python & React)
Fitch Group
Toronto, ON
…that support core business capabilities, partnering closely with engineers, product managers, and business stakeholders. We are looking for a highly experienced software engineer with deep…
Added 1 month ago
E
Senior SDET (IC4) - Senior Software Engineer in Test
Emburse
Toronto, ON
- Full-time
Emburse is seeking a skilled and detail-oriented Senior Software Development Engineer in Test (SDET) to join our engineering team. In this role, you will bridge the gap between software…
Added 1 month ago
S
Senior Quality Assurance Specialist
Synechron
Toronto, ON · Greater Toronto Area, Canada
- $120,000 to $125,000 CAD / year
- Full-time
Strong Python skills (pytest, pandas, numpy, cx_Oracle) and comfort with SQL (Oracle and/or Sybase/SQL Server).
Added 1 month ago
CI
Senior Quality Engineer, Real Assets, Alternative Investment Technology
CPP Investments | Investissements RPC
Toronto, ON
- Full-time
As a Senior Quality Engineer, you will design, build and implement test automation to ensure quality delivery in support of value-add technology solutions and products. You will proactively…

Wealthsimple

Senior Software Developer, LLM Infrastructure

Canada

Compensation Range: CA$152.9K - CA$189K · Full-time

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Job details

Pay: Compensation Range: CA$152.9K - CA$189K
Job type: Full-time
Experience: 6+ years of software engineering experience building production-ready distributed systems or data platform infrastructure.
Posting language: English
Posted: Aug 5, 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.

Compensation Range: CA$152.9K - CA$189K

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More about this job

Responsibilities

Design and implement the core backend and infrastructure to host and serve open-source LLMs reliably on cloud and GPU systems. Develop model-routing frameworks and evaluation tooling to optimize performance, cost, and latency for GenAI initiatives.

Requirements

Requires 6+ years of software engineering experience building production-ready distributed systems or data platform infrastructure. Proficiency in Python, Kubernetes, and Terraform is required, along with familiarity with the modern AI ecosystem and LLM serving tools.

Skills

Python
Kubernetes
Terraform
Distributed Systems
vLLM
Ray
LiteLLM
FastAPI
AWS GPU Infrastructure
Model Routing
Evaluation Frameworks
Backend Engineering
Kafka
Postgres
Redshift
Snowflake

Benefits

Health Benefits
Life Insurance
Group Savings With Employer Match
20 Vacation Days
4 Wellness Days
Unlimited Sick And Mental Health Days
Work Outside Canada For Up To 90 Days Per Year
Employee Resource Groups

Visa sponsorship

Not detected in the job text

Keywords

LLM Infrastructure
GenAI
Machine Learning
Open-Source Models
GPU Infrastructure
vLLM
Ray
LiteLLM
Bedrock
Kubernetes
Terraform
AWS
Python
FastAPI
Kafka
Postgres
Redshift
Snowflake
Distributed Systems
Model Routing
Evals
Benchmarking
Financial Services
Backend Systems
Cloud Computing
Inference Optimization

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