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Added 37 mins ago
SM
RQ11645 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with demonstrated experience designing, developing, testing, and supporting enterprise web applications and AI-enabled solutions. The…
Added 37 mins ago
SM
RQ11645 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with demonstrated experience designing, developing, testing, and supporting enterprise web applications and AI-enabled solutions. The…
Added 37 mins ago
SM
RQ11645 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with demonstrated experience designing, developing, testing, and supporting enterprise web applications and AI-enabled solutions. The…
Added 1 hour ago
A
Associate Director-AI&Data
Accenture
Ottawa, ON · Montreal, QC
- Full-time
Added 1 hour ago
MG
Director, Legal & Loan Operations
MarshallZehr Group Inc.
Waterloo, ON
- $110,000 to $130,000 CAD / year
- Full-time
Added 2 hours ago
AS
Applied Scientist II, Alexa Daily Essentials Science and Analytics
Amazon Science
Vancouver, BC
- Full-time
…for customers, and apply reinforcement learning to improve agent behavior through outcome signals. You'll own science end-to-end - from rapid prototyping through production deployment -…
Added 3 hours ago
C
AI Architect (T & I) (Telework/Hybrid)
CBC/Radio-Canada
Montreal, QC
- Full-time
Evaluate and standardize integration protocols such as Model Context Protocol (MCP) and agent-to-agent (A2A) architectures to interconnect our models with complex production platforms…
Added 4 hours ago
F
Co-Founder & CEO - InsurTech | AI-Native Insurance Brokerage
FutureSight
Canada
- Full-time
Added 4 hours ago
LI
Communications Manager
LanceSoft, Inc.
Montreal, QC
- Contract
Identify and implement AI, automation, and agent-based tools to improve communications workflows, partnering with Technology teams to pilot and scale solutions that enhance productivity and…
Added 4 hours ago
SS
Platform Architect
Simpro Software
Montreal, QC
- Full-time
…et l’AI gateway qui constituent le point d’entrée de chaque agent vers les systèmes métier, avec orchestration des API, fédération des tenants et exposition via…
Added 4 hours ago
P
Enterprise Application - Experienced Designer, Senior Associate (Reliability Security Clearance Required)
PwC
Ottawa, ON · Toronto, ON
- Full-time
Familiarity with the Salesforce digital customer platform, supported by certifications such as Salesforce Administrator, Platform Developer, App Builder, or Salesforce Architect.
Added 4 hours ago
P
Corporate Tax, Manager
PwC
Toronto, ON
- Full-time
Added 4 hours ago
W
Software Development Engineer - Agent Factory
Workday
Vancouver, BC · Canada, BC, Vancouver
- Full-time
Agent Factory is where Workday’s next chapter gets built. We’re forming small, senior, cross-functional AI teams that bring together product leaders, machine learning engineers, and…
Added 4 hours ago
SS
SDET Lead
Simpro Software
Montreal, QC
- Full-time
Build evaluation suites for LLM-based agents: curated test datasets, regression checks on prompts and tool calls, and LLM-as-judge scoring, run on every change to a model, prompt or agent.
Added 4 hours ago
Analyst, Artificial Intelligence
VIA HFR - VIA TGF Inc
Ottawa, ON · Toronto, ON · Montreal, QC · Quebec, QC
Platform Administration & Governance: Manage Azure AI Foundry, Copilot, and AI agent governance across the organization and governance processes to support business unit AI champions and…
Added 5 hours ago
NS
Senior DevOps Engineer, AI Platform
Network Solutions
Canada
- Full-time
We are looking for a hands-on Senior DevOps Engineer to build and operate the infrastructure powering our AI platforms, agent runtimes, web applications, backend services, APIs, and shared…
Added 5 hours ago
KG
Power Platform & (Copilot AI)
K&K Global Talent Solutions INC.
ON · Ontario, Canada
- Full-time
Position: Power Platform & AI Agent Developer
Added 5 hours ago
CD
Technical Lead / Architect – AI-Driven Development & Power Platform
Cloud Data Vision
Calgary, AB
- $70 to $80 CAD / hour
- Contract
Amazon Bedrock – LLM Agents, Agent Orchestration & Tool/Function Calling
Added 5 hours ago
MA
DZ Driver/Inside Sales Representative
Messer Americas
Cambridge, ON
- Full-time
Some administration duties include the use of handheld technology to process deliveries and reconcile agent consignment inventory balances
Added 5 hours ago
MA
DZ Driver
Messer Americas
Cambridge, ON
- Full-time
Some administration duties include the use of handheld technology to process deliveries and reconcile agent consignment inventory balances
Added 5 hours ago
MA
Route Driver
Messer Americas
Stratford, ON
- Full-time
Some administration duties include the use of handheld technology to process deliveries and reconcile agent consignment inventory balances
Added 5 hours ago
S
Technical Lead/Architect – AI & Power Platform
SharpAtoms
Calgary, AB
- Contract
We're looking for a full-stack web developer to build AI-powered web applications, from front-end UI through to the APIs and cloud infrastructure that support them.
Added 5 hours ago
LH
AI Augmented Quality Assurance Analyst II
LGI Healthcare Solutions
Montreal, QC
- Full-time
Added 6 hours ago
IC
ServiceNow Developer
Infotek Consulting Inc.
Toronto, ON
- $55 to $65 CAD / hour
- Contract
We are looking for a ServiceNow Developer for a 1 year contract with high possibility of extension. Role is hybrid with 3 days a week on site in Downtown Toronto.
Added 6 hours ago
BS
Senior ServiceNow Developer
Brainhunter Systems Ltd
Toronto, ON
- Contract
Brainhunter is currently seeking the services of a “Senior ServiceNow Developer ” for a contract opportunity with one of our Valued Clients.

HeyGen

Applied AI Engineer, Video Agent

Toronto, ON, Canada

$180,000 – $240,000 annually

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Job details

Pay: $180,000 – $240,000 annually
Posting language: English
Posted: Oct 2, 2026

Original job description

About HeyGen

At HeyGen, our mission is to make visual storytelling accessible to all. Over the last decade, visual content has become the preferred method of information creation, consumption, and retention. But the ability to create such content, in particular videos, continues to be costly and challenging to scale. Our ambition is to build technology that equips more people with the power to reach, captivate, and inspire audiences.
Learn more at www.heygen.com. Visit our Mission and Culture doc here.

About the Video Agent team

Video Agent turns a prompt, a document, or a handful of assets into a finished video. Behind a simple chat box sits a multi-step AI agent. It plans a storyboard, writes the script, chooses avatars, voices, and visuals, calls many tools along the way, and hands the result to our rendering pipeline. Customers use it every day to make training videos, product explainers, marketing content, and more.

We are a small team that owns the agent end to end. That covers the prompts and tools the agent uses, the backend services that run it, and the product screens where people chat with it and edit what it makes.

This is not a role where you only call someone else’s model through an API. HeyGen trains its own models in house, and the agent is built on top of them. You will work directly with those models and with the researchers who build them, which is an experience few applied AI roles offer.

About the role

You will make Video Agent better at doing what the user actually asked for, and you will prove it with data. Some weeks that means redesigning a tool the agent calls. Other weeks it means building an eval, running an A/B test, or shipping a new editing experience in React. You will own features from the first idea through launch and follow-up, and you will decide which problems belong to the model and which belong to plain, deterministic code.

What you’ll do

Build the agent. Design the tools, prompts, and context the agent works with. Improve how it plans, how it recovers from mistakes, and how it handles long, multi-turn conversations.
Measure quality. Build evals and offline replays of real sessions. Run experiments behind feature flags and read the results honestly. Watch real user sessions and agent traces to find where things go wrong.
Ship across the stack. Build user-facing features in TypeScript and React. Build backend services and long-running workflows in Python and Go.
Work closely with others. Partner with product managers, designers, and the research and rendering teams that the agent depends on.

What we’re looking for

You have built and shipped an AI agent that real people use. We mean a system where a model calls tools, plans across several steps, and acts on the results. A chat wrapper or a prompt demo is not enough on its own. We want to hear what broke in production and how you fixed it.
You know how to tell whether an AI system got better. You have built evals or test sets for model behavior. You can tell a real improvement from noise, and you are skeptical of results that look too good.
You are a strong full-stack engineer. You have 2 or more years of professional experience. You are fluent in TypeScript and React on the frontend and Python on the backend.
You have strong product sense. You use what you build, you care how it feels, and you look at how customers actually use it.
You take ownership. You do not wait for a spec. You find the most important problem, fix it, and tell people what changed.

A degree in computer science or a related field is welcome but not required. Equivalent experience counts.

Nice to have

You have fine-tuned models before.
You have worked on code-to-video models, which generate video by writing code such as HTML or animation scripts.
You have worked on video agent models in general.

Show us an agent you’ve built

With your application, please include a short note (a few sentences is fine) about an agent you have built. Tell us what it does, how you measured whether it worked, and one failure you found and fixed. A link to code, a demo, or a write-up is a bonus.

Compensation & Benefits

$180,000 – $240,000 annually
Equity in a high-growth AI company.
401K Match
Health, dental, and vision benefits.
Flexible PTO.
Opportunity to help define a new category in AI video.
High ownership, high velocity, and direct impact on revenue growth.

Equal Opportunity

HeyGen is an Equal Opportunity Employer. We value diversity and are committed to building an inclusive environment for all employees.

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More about this job

Responsibilities

You will design and build AI agents that plan, execute tasks, and handle multi-turn conversations while managing the full-stack implementation. Additionally, you will measure agent performance through data-driven evaluations and experiments to improve user-facing features.

Requirements

You must have at least 2 years of professional experience with strong proficiency in TypeScript, React, Python, and Go. A proven track record of shipping AI agents that utilize tool-calling and planning capabilities is required.

Skills

AI Agent Development
TypeScript
React
Python
Go
Model Fine-tuning
Prompt Engineering
System Architecture
Data Analysis
A/B Testing
Evaluation Frameworks
Full-stack Development
Product Sense
Workflow Automation
API Integration

Benefits

Equity
401k Match
Health Insurance
Dental Insurance
Vision Insurance
Flexible PTO

Visa sponsorship

Not detected in the job text

Keywords

AI Agent
TypeScript
React
Python
Go
Machine Learning
Full-stack
Prompt Engineering
A/B Testing
Data Evaluation
Backend Services
Workflow Automation
Video Generation
Fine-tuning
Product Development
Software Engineering
API
Rendering Pipeline
User Experience
Scalability

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