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Added 1 month ago
U
Gestionnaire de développement de logiciels / Mgr. Software Development
UKG
Montreal, QC
- Full-time
Piloter la planification de la relève et l'efficacité de l'ingénierie, en mettant l'accent sur la qualité et l'expérience développeur grâce à des approches basées sur les données.
Added 2 months ago
BS
Full Stack Developer
Birdseye Security Solutions
Mississauga, ON
- Full-time
This needs to be an AI-native developer. We are not looking for someone who has merely tried ChatGPT, Copilot, or Claude. You should have fundamentally changed how you develop software…
Added 1 month ago
Principal Software Engineer, Money Movement (Questbank)
Questrade Financial Group
Toronto, ON
…judgment about generated code, not fluency in one language. Experience with C# and modern .NET is a nice to have, as the current estate is predominantly .NET, but strong Java, Go, or Kotlin…
Added 1 month ago
W
Senior AI Engineer, Full-Stack - Agent Factory
Workday
Vancouver, BC · Canada, BC, Vancouver
- Full-time
Strong experience with React or a comparable framework, TypeScript, state management, and modern build tooling, plus a commitment to accessibility (WCAG 2.1/2.2).
Added 1 month ago
QUALITY ASSURANCE AUTOMATION TESTER (UNIONIZED) - CONTRACT - HYBRID
Green Shield Canada
Toronto, ON · Windsor, ON
Minimum 3 years’ experience in creating, modifying and updating automated test scripts or Successful completion of approved Automation Tool course
Added 1 month ago
A
Senior Principal Engineer
Autodesk
Toronto, ON · AMER - Canada - Ontario - Toronto - University Ave
- Full-time
…the technical strategy and evolution of our cloud platform, developer experience, application delivery, and AI-enabled engineering capabilities within the GET Engineering - Horizontal…
Added 2 months ago
F
Senior Software Engineer (AI & Full Stack)
Fable
Remote, Canada
- Full-time
- Remote
Fable is looking for a highly motivated Senior Software Engineer with deep backend expertise, strong full-stack development skills, and hands-on experience building AI-powered applications…
Added 2 months ago
PG
Manager Platform Security
Paymentus Group Inc
Richmond Hill, ON
- Full-time
Ensure security tooling is effectively integrated into CI/CD pipelines with risk-based gates, actionable findings, developer-friendly feedback loops, and measurable remediation outcomes.
Added 2 months ago
P
Senior Application Security Engineer
Paymentus
Richmond Hill, ON
- $110,000 to $150,000 USD / year
- Full-time
Experience working with CI/CD pipelines, source control systems, artifact repositories, build systems, infrastructure as code, and developer workflow automation.
Added 3 months ago
AI Platform Engineer - DevOps
Staffinity Inc
Halifax, NS
…explicitly focused on developing value-add services that integrate with an existing DevOps stack, championing developer experience, and accelerating CI/CD pipeline automation within an…
Added 2 months ago
I
Quality Engineering Analyst
Infosys
Mississauga, ON
- Full-time
Experience in one or more programming languages such as Python, Perl, ABAP, Java, C++.
Added 2 months ago
Digital Architect
Government of Alberta
Edmonton, AB
Experience delivering digital services in agile, product-oriented environments and familiarity with languages such as Python, Java, .NET, or Node.js.
Added 2 months ago
G
Software Engineer, Full Stack
Gigi
Toronto, ON
- Full-time
You do not need prior experience with every agent framework or concept we use. We expect strong engineers to learn LangGraph, agent orchestration, evaluations, retrieval, and tool use on…
Added 2 months ago
O
Software Developer
OceanMD
Toronto, ON
- Full-time
Meet the growing demand for digital solutions with online booking and secure messaging that improves the patient’s experience, reduces the need for unnecessary phone calls, and makes…
Added 2 months ago
QUALITY ASSURANCE AUTOMATION TESTER - HYBRID
Green Shield Canada
Toronto, ON · Windsor, ON
Minimum 3 years’ experience in creating, modifying and updating automated test scripts or Successful completion of approved Automation Tool course
Added 1 month ago
AI and Data - Manager - AI Engineer
EY
Toronto, ON
At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you. And we’re counting…
Added 2 months ago
J
Senior Software Engineer, Applied AI (Netherlands)
Justworks
Toronto, ON
- €143,000 to €184,000 EUR / year
You are self-driven and like to work with others to remove roadblocks. You are curious and love to explore and learn new technologies. You have demonstrated the ability to build, deploy,…
Added 1 month ago
Senior Software Engineer, Applied AI (Spain)
Justworks
Toronto, ON
You are self-driven and like to work with others to remove roadblocks. You are curious and love to explore and learn new technologies. You have demonstrated the ability to build, deploy,…
Added 3 months ago
S
AI Platform Engineer – DevOps
Synechron
Halifax, Nova Scotia
- $85,000 to $100,000 CAD / year
- Full-time
Champion developer-experience and best practices in conjunction with DevOps to ensure no developer is left behind
Added 2 months ago
UO
Artificial Intelligence Systems Team Lead, Enterprise Architecture Data Management
University of Saskatchewan
Saskatoon, SK
- Full-time
Experience with AI and Machine Learning (ML) systems, cloud-based AI services, automation platforms, or intelligent workflow systems
Added 3 months ago
S
Senior Backend & Infrastructure Engineer
Scispot
Remote, Canada
- $80,000 to $120,000 USD / year
- Full-time
- Remote
You will work closely with the founders and product engineers.
Added 3 months ago
HM
Data Engineer
Hotspex Media
Toronto, Ontario
- $85,000 to $115,000 CAD / year
- Full-time
🔥 Finalist 'Best AI Tool', 2024 Digiday Technology Awards
Added 3 months ago
S
Full Stack AI Engineer
Scispot
Remote, Canada
- $80,000 to $120,000 USD / year
- Full-time
- Remote
Experience with AWS services (ECS, Lambda, RDS, S3, CloudWatch, etc.).
Added 3 months ago
C
Senior Software Developer - Agentic System
Coveo
Montreal, Quebec
- Full-time
Experience developing with TypeScript and/or Java.
Added 2 months ago
BS
Full Stack Developer
Birdseye Solutions
Mississauga, ON
- Full-time
This needs to be an AI-native developer. We are not looking for someone who has merely tried ChatGPT, Copilot, or Claude. You should have fundamentally changed how you develop software…

Gigi

Software Engineer, Full Stack

Toronto, ON, Canada

Base salary: $110k to $200k depending on experience level · Full-time

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Job details

Pay: Base salary: $110k to $200k depending on experience level
Job type: Full-time
Posting language: English
Posted: Aug 6, 2026

Original job description

Gigi is the agentic operating system of enterprise media buying. Our first product is the AI media manager for Amazon DSP. Since launching it in summer 2025, we've grown to manage hundreds of millions in advertising spend on behalf of the largest agencies in the world.

We're backed by top venture investors Golden Ventures and Aperiam Ventures. Our founding team has spent 15+ years building in Amazon Ads and ecommerce, including a prior $100M+ exit.

We doubled revenue in the past two months. We expect to double again by early Q4.

We're hiring an AI Builder - a full stack software engineer - to join our engineering team in Toronto and own end-to-end feature development for Gigi, our AI agent.

This is still fundamentally a software engineering role. Much of the work will feel familiar: designing APIs, building interfaces, modelling data, integrating services, writing tests, debugging production issues, and making architectural decisions. The main difference is the product we're building: agentic software where LLMs reason, use tools, and take actions on behalf of customers.

You do not need to be an AI researcher or have years of professional LLM experience. Strong full stack engineers who are excited to learn how agentic systems work should apply. You'll use tools such as Codex, Claude Code, and Cursor as a core part of how you work, while building across agent logic, backend services, data, and the customer-facing product.

This is the 12th role at Gigi. As an early employee, you will have a meaningful role in shaping our product, engineering culture, and company.

What you'll do

Ship end to end. You'll own features from the data layer through the agent logic to the interface a media buyer actually touches. Our stack includes Python, FastAPI, LangGraph and LangChain; TypeScript, Vue and Nuxt; Java and Spring Boot; PostgreSQL, pgvector, Redis and NATS; and AWS.
Build with AI as a core part of your development workflow. Use Codex, Claude Code, Cursor, and other coding agents to help plan, implement, test, debug, and review software. You are still responsible for the architecture, quality, and correctness of what gets shipped.
Build the agent's judgment, not just its plumbing. Decide what Gigi should do autonomously and what it must escalate to a human, then score actions on risk and confidence so recommendations read differently when the data is thin.
Draw the line between probabilistic and deterministic work. LLMs for reasoning, structured software for execution. Knowing where that boundary sits on any given feature is a daily call, not a settled architecture.
Build reliable agentic systems. You'll learn to design tools, retrieval, memory, evaluations, guardrails, and human approval flows that make Gigi dependable enough to take action inside real advertising accounts. Prior experience with all of these is not expected.
Work directly with customers. You'll sit in on calls, read transcripts, and take feedback straight from the media buyers using the product. You'll turn ambiguous customer problems into shipped product without waiting for a perfect spec.

What success looks like

First 30 days. Your code is in production. You understand what a media buyer's day actually involves and why the product is shaped the way it is.
Six months. You own a surface area of the product outright. When something breaks in it, or a customer asks for something new, you're the person who decides what happens.
Twelve months. You've shipped something we could not have built without you, and you've thrown out at least one thing you built because the abstraction was wrong.

What you'll bring

A track record of building and shipping production software used by real customers. We care more about what you have built and owned than an exact number of years.
Strong full stack software engineering experience. The fundamentals you already have - system design, APIs, data models, interfaces, testing, debugging, and operating production software - transfer directly to this role.
Comfort across the stack. Real depth somewhere, no allergy to the parts you're weaker in.
Experience using, or a strong desire to become highly effective with, AI coding tools such as Codex, Claude Code, Cursor, or similar tools. You do not need to be an expert on day one, but you should be excited to use them every day - and strong enough technically to review their work, reject weak abstractions, catch missing edge cases, and remain accountable for what ships.
Curiosity about how LLMs change software products and the way software gets built. You should be excited to develop good judgment around where AI belongs - and where conventional software is the better answer.
Judgment over specification. You can make a reasoned call, ship it, and iterate fast when it's wrong.
Speed and ownership. LLMs changed what “fast” means for a small team. You should be comfortable using AI coding agents to move quickly while maintaining a high bar for architecture, correctness, and maintainability.

What you don't need

You do not need an AI research background or experience training foundation models. We build products around existing models, combining them with tools, data, business logic, interfaces, and production infrastructure.
You do not need prior experience with every agent framework or concept we use. We expect strong engineers to learn LangGraph, agent orchestration, evaluations, retrieval, and tool use on the job.
You do not need prior advertising or Amazon DSP experience. Our team will help you learn the domain.

Bonus points if

You've built with LLMs in production: evals, guardrails, tool use, retrieval, agent orchestration, cost and latency work.
You've worked in advertising or ecommerce.
You've built real-time data pipelines at meaningful volume, or been early enough at a startup to know what the first 20 people actually do.
You've operated production systems where correctness, permissions, auditability, or customer trust mattered.

The hard parts

We'd rather you know this before you apply.

We work hard. We are trying to build a generational company, and early employees should expect intensity, ambiguity, and high standards.
Cash compensation is competitive for our stage, but we will not win every late-stage salary comparison. The upside is meaningful ownership and equity in a company growing quickly.
We throw out working code when the underlying abstraction is wrong. Some of what you build will not survive, and you'll be the one who calls it.
Nobody is siloed. You'll write frontend, debug backend, think through product, join customer calls, and solve whatever problem is blocking the customer.

Compensation and equity

Base salary: $110k to $200k depending on experience level
Meaningful equity. We want to be as generous with equity as possible, and top performers can expect equity top-ups early and often.

Life at Gigi

In-office culture. We work together downtown Toronto, but makers (i.e. engineers) can choose to work where they are most productive on Wednesdays.
Catered lunch every day from Toronto's best spots. Current rotation: Impact Kitchen, iQ Food Co., ChopHop, and Cumbrae's.
Real snacks: Greek yogurt, Mateína yerba mate, Barebells protein bars, Midday Squares. Tell us what you want and we'll add it.
Top-of-the-line Apple equipment.
Comprehensive health and dental coverage.

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More about this job

Responsibilities

You will own end-to-end feature development for an AI agent, managing everything from data layers and agent logic to customer-facing interfaces. You will also collaborate directly with customers to translate feedback into product improvements while maintaining high standards for architecture and code quality.

Requirements

Candidates should have a strong track record of building and shipping production software with proficiency across the full stack. You must be comfortable using AI coding tools and possess the technical judgment to oversee architecture, testing, and debugging.

Skills

Full stack development
Python
FastAPI
TypeScript
Vue
Nuxt
Java
Spring Boot
PostgreSQL
AWS
System design
API design
Data modeling
Agentic systems
LLM integration
Debugging

Benefits

Equity
Health insurance
Dental coverage
Catered lunch
Snacks
Apple equipment

Visa sponsorship

Not detected in the job text

Keywords

Software Engineer
Full Stack
AI
LLM
Python
FastAPI
LangGraph
LangChain
TypeScript
Vue
Nuxt
Java
Spring Boot
PostgreSQL
Pgvector
Redis
NATS
AWS
Codex
Claude Code
Cursor
Agentic systems
System design
API
Data modeling
Advertising technology
Ecommerce
Production software
Startup

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