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First National Financial LP

AI Engineer

Toronto, ON, Canada
East York, ON, Canada

Job type: Full-time
Apply by: Oct 22, 2026
Posting language: English
Posted: Sep 22, 2026

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Original job description

We are hiring an AI Engineer, Application Development!

Reporting To

Assistant Vice President IT, Application Development

Full-Time/Part- Time

Full-time

Posting Date

September 22, 2026

Closing Date

October 20, 2026

Hours Of Work

8:30 a.m. – 5:00 p.m.

Grade

Office Location:

14.4

Toronto

Great location! Steps away from the main public transit station

What We Offer

Highly competitive compensation package which includes, base salary, bonus, benefits, and career advancement opportunities!

Eligibility for benefits is dependent on the terms of employment

The Opportunity

The AI Engineer reports to the AI Engineering Lead and works within First National’s Residential Underwriting Product Squad, accountable for designing, building, testing, and improving AI enabled mortgage workflows that enhance productivity, decision quality, policy adherence, and user experience.

This is a hands on engineering role focused on agentic workflows, document and policy intelligence, retrieval augmented generation, deterministic rules and calculations, tool integration, human in the loop review, and measurable model quality.

How You Will Contribute

Design and build AI enabled workflows for residential mortgage use cases, including document extraction, policy interpretation, retrieval augmented generation, summarization, tool calling, deterministic decision logic, calculations, exception handling, and human in the loop review.
Translate First National business rules, underwriting policies, process steps, and edge cases into modular prompts, agents, retrieval pipelines, tools, services, and testable acceptance logic, in partnership with the Residential Underwriting Business SME and the Merlin Product Owner.
Build on shared AI Factory services and approved patterns across Databricks and Azure, including governed data, Vector Search, model and prompt registries, evaluation harnesses, APIs, identity, logging, monitoring, and controlled access to model providers, and raise platform gaps to the AI Engineering Lead and the Technical Product Manager rather than building parallel platform components.
Develop production quality code using Python, SQL, FastAPI, Git based workflows, automated tests, CI/CD, and modern engineering practices, and integrate AI services with Merlin, core mortgage systems, document repositories, data sources, and user facing applications through the interfaces and data contracts owned by the AI Data and Integration Engineer.
Create representative use case test cases and evaluation datasets to the methodology, acceptance thresholds, and quality standards set by the AI Quality and Evaluation Lead, and work with IT QA to analyze failure patterns and improve grounding, policy adherence, confidence, precision, recall, and exception routing.
Implement safeguards for privacy, security, auditability, model and prompt versioning, observability, feedback capture, rollback, and cost control, following First National engineering and production readiness standards.
Support UAT, parallel runs, defect triage, production releases, incident analysis, and ongoing monitoring, and rapidly address edge cases identified through user feedback, evaluations, and operational telemetry.
Refactor partner delivered or prototype components into modular, documented, maintainable services, and contribute reusable prompts, tools, retrieval patterns, and lessons learned back to the AI Factory component catalog.

The Experience You Need

Bachelor’s degree in computer science, engineering, data science, mathematics or a related discipline.
5 plus years of progressive software engineering, machine learning engineering, data engineering, applied AI, or related technology experience.
Hands on experience building production AI or generative AI solutions, including RAG, agentic workflows, document intelligence, prompt and tool design, model serving, evaluation, observability, and human in the loop controls.
Strong practical experience with Python, SQL, APIs, automated testing, Git based delivery, CI/CD, and cloud services. Experience with Microsoft Azure, Databricks, MLflow, Vector Search, Azure OpenAI Service, or comparable platforms is strongly preferred.
Ability to combine probabilistic AI techniques with deterministic rules, calculations, validations, and workflow controls to meet business, policy, audit, and operational requirements.
Working knowledge of retrieval quality, prompt testing, confidence scoring, error analysis, model and prompt drift, guardrails, red teaming, privacy, security, and cost optimization.
Experience collaborating with product owners, domain experts, full stack engineers, QA, security, data, and platform teams through design, UAT, production release, monitoring, and continuous improvement.
Experience in financial services, mortgage lending, lending operations, servicing, broker channels, third party partnerships, or regulated technology environments is preferred.

Relationships

External: Engages implementation partners, cloud providers, data and AI platform providers, and specialist vendors on solution delivery, code and prompt quality, production readiness, and knowledge transfer to First National.

Internal: Works day to day within an AI Product or AI Platform Squad.

Working Environment And Physical Demands Analysis

Office environment
Periods of high volume with tight timelines
Long periods of stationary position/sitting
Prolonged periods of repetitive movement (i.e. using a keyboard and mouse)
Long periods of time in viewing a computer screen
Multi-tasking may include speaking to customers on a telephone call while looking up information on a computer program.

Why join First National?

Competitive Compensation
Comprehensive benefits program (i.e., Health Spending Account, Maternity and Parental Leave Top Up)
Extensive training programs to set our employees up for success
Modern office environment conducive to collaboration
Supportive teamwork culture
Opportunities to give back to the communities and work through events focused on a variety of charities
Ongoing social events throughout the year

The Team You’ll Join

Founded in 1988, First National is one of Canada’s largest non-bank lenders. We provide residential mortgages exclusively through the mortgage broker channel and we are Canada’s largest commercial mortgage lender.

First National has been consistently recognized as a great place to work and we are proud that our employee engagement feedback is higher than our industry partners.

We would like to thank all applications for their interest in this existing vacancy, but only candidates selected for an interview will be contacted.

Artificial Intelligence is not used in our recruitment or hiring process for this role.

First National is proud to be an equal opportunity employer and is committed to diversity and inclusion regardless of race, color, religion, national origin, age, gender identity, physical or mental disability, sexual orientation and any other category protected by law.

First National supports requests for accommodation from applicants with disabilities; please contact Human Resources at accessibility@firstnational.ca should you need an accommodation at any point in the recruitment process.

#FNLOON

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More about this job

Responsibilities

Design, build, and test AI-enabled mortgage workflows to enhance productivity and decision quality. Collaborate with business stakeholders to translate underwriting policies into modular agents, retrieval pipelines, and deterministic decision logic.

Requirements

Requires a bachelor's degree in a technical field and 5+ years of experience in software or machine learning engineering. Strong practical experience with Python, SQL, cloud platforms like Azure, and generative AI techniques is essential.

Skills

Python
SQL
FastAPI
Git
Generative AI
RAG
Agentic workflows
Azure
Databricks
MLflow
Vector search
Prompt engineering
CI/CD
Machine learning engineering
Data engineering
Cloud services

Benefits

Competitive compensation
Bonus
Benefits
Career advancement opportunities
Health spending account
Maternity and parental leave top up
Training programs

Visa sponsorship

Not detected in the job text

Keywords

AI Engineer
Python
SQL
FastAPI
Git
CI/CD
Azure
Databricks
MLflow
Vector Search
Azure OpenAI Service
Generative AI
RAG
Agentic Workflows
Document Intelligence
Prompt Engineering
Machine Learning
Data Engineering
Mortgage Lending
Financial Services
Underwriting
API
Observability
Automated Testing
Human-in-the-loop
Model Registry
Prompt Registry
Deterministic Rules
Software Engineering
Cloud Computing

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