Senior Software Developer, LLM Infrastructure

🕒 August 5

🇨🇦 Canada – Remote

💵 CA$152.9k - CA$189k / year

⏰ Full Time

🟠 Senior

🗣️ LLM Engineer

👻 Ghost score 15%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Wealthsimple

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 2014

💼 Consulting

🛡️ Insurance

💳 Fintech

🔥 Funding within the last year

💰 $393M Series E - Wealthsimple on 2025-10

Consulting • Insurance • Fintech

Wealthsimple is a Canadian financial technology company that provides consumer banking, investing, and wealth management services. It offers chequing accounts, savings, credit cards, self-directed trading (stocks, ETFs, options), cryptocurrency trading, managed portfolios, tax services, and advisory wealth management for high-net-worth clients. Wealthsimple combines digital-first banking and low-fee investing products aimed at retail customers, along with tools and educational content to support personal finance.

📋 Description

• Build model-routing architecture, including 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) for benchmarking model quality against production requirements • Drive cost-optimization and infrastructure-efficiency initiatives while maintaining system accuracy and reliability • Design and implement core backend and infrastructure powering AI systems • Collaborate with data scientists, platform engineers, and engineering leaders to scale the GenAI footprint efficiently and securely • Help define the technical direction for scalable LLM infrastructure company-wide

🎯 Requirements

• 6+ years of software engineering experience building production-ready distributed systems or data platform infrastructure • Strong proficiency in Python • Proficiency with Kubernetes and Terraform • Proven experience designing and operating highly performant, observable backend systems • Practical experience or deep familiarity with the modern AI ecosystem, including serving open-source models, vLLM, Ray, model routing, or evaluation frameworks • Track record of owning technical projects end-to-end with high autonomy • Candidates located in Canada must be legally eligible to work in Canada

🏖️ Benefits

• Top-tier health benefits and life insurance • Long-term group savings with employer match, through Wealthsimple for Business • 20 vacation days • 4 wellness days • 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 • Equity compensation for permanent employees • Accessible hiring experience and interview accommodations