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Added 3 months ago
Forward Deployed Engineer, Supply Chain
Jetson Home
North Vancouver, BC
A builder who ships. Strong engineering fundamentals, good judgment, and a drive to get things into people's hands. You're fluent in TypeScript, Python, or other high-level language,…
Added 3 months ago
Forward Deployed Engineer, Finance
Jetson Home
North Vancouver, BC
A builder who ships. Strong engineering fundamentals, good judgment, and a drive to get things into people's hands. You're fluent in TypeScript, Python, or other high-level language,…
Added 2 months ago
Modern Workplace Engineer - Intune & Endpoint Management
Scotiabank
Toronto, ON · Scarborough, ON
The Role: Intune Automation Engineer - AI & Modern Workplace
Added 3 months ago
CS
Staff Software Engineer, GPU Inference
Cerebras Systems
Remote, Canada
- Full-time
- Remote
We are hiring a Software Engineer to productionize and optimize our GPU serving stack, working across our custom inference APIs, the vLLM serving runtime, the AMD ROCm software stack, and…
Added 2 months ago
Staff Software Engineer (Platform)
Dialpad
Kitchener, ON
…work every day. We put powerful AI tools in every employee’s hands so they can move faster, think bigger, and achieve…
Added 3 months ago
S
Senior Data Engineer
ShyftLabs
Toronto, ON
- Full-time
ShyftLabs is seeking an experienced Senior / Lead Data Engineer to lead the design, architecture, and delivery of enterprise-scale data platforms for Fortune 500 organizations. This is a…
Added 3 months ago
J
Senior Software Engineer, Applied AI (Toronto)
Justworks
Toronto, ON
- $188,000 to $242,000 CAD / year
We are seeking a Senior Software Engineer with a strong passion for building AI-native systems in a product environment. The ideal candidate will be able to take ownership of large segments…
Added 3 months ago
VG
Software Engineer - Team Lead (Forward Deployed)
Volaris Group
Mississauga, ON · Canada - Mississauga, ON
- Full-time
We’re looking for a Software Engineer Team Lead (Forward Deployed) to join our customer engineering team as a player/coach. You’ll work directly with enterprise clients to design,…
Added 1 month ago
A
Test/Lab Engineer
Actalent
Oakville, ON
- Contract
Our client in the automotive industry, is looking to hire a Test/Lab Engineer.
Added 4 months ago
F
AI Full Stack Engineer
Feathery
Toronto, Ontario
- $90,000 to $140,000 CAD / year
- Full-time
To keep pace with that ambition, we're looking for a Full Stack Engineer to join the AI team and own these capabilities end-to-end.
Added 4 months ago
T
Senior QA Automation Engineer
Tubi
Toronto, Ontario
- Full-time
Tubi is seeking a highly skilled and experienced Senior QA Automation Engineer to lead quality assurance initiatives for our cutting-edge streaming and AI-driven product features. This…
Added 4 months ago
I
Senior AI Software Engineer
iManage
Toronto, Ontario
- Full-time
Being a Senior AI Software Engineer at iManage Means
Added 4 months ago
O
Cloud Security Engineer
Opendoor
Toronto, Ontario
- Full-time
As our Cloud Infrastructure Security Engineer, you'll own the security of everything Opendoor runs on including multi-account AWS, Kubernetes clusters, the identity plane connecting every…
Added 4 months ago
O
Application Security Engineer
Opendoor
Toronto, Ontario
- Full-time
As our Application Security Engineer, you'll own how we find, prioritize, and drive down application-layer risk across the consumer flows that put cash offers in homeowners’ hands, the…
Added 4 months ago
T
QA Automation Engineer
Tubi
Toronto, Ontario
- Full-time
Tubi is seeking a highly skilled and experienced QA Automation Engineer to lead quality assurance initiatives for our cutting-edge streaming and AI-driven product features. This pivotal…
Added 3 months ago
A
Sr Associate Software Engineer - Applied AI
Amgen
Burnaby, BC
- Full-time
As a Sr Associate Software Engineer, you will be an integral member of the Applied AI – AI Productivity/Custom GPT Solutions Practice team, which empowers Amgen teams and staff members to…
Added 2 months ago
Staff Software Engineer
Dialpad
Vancouver, BC
…work every day. We put powerful AI tools in every employee’s hands so they can move faster, think bigger, and achieve…
Added 3 months ago
BS
Tech Lead - ToolHound
Beacon Software
Remote, Canada
- Full-time
- Remote
Lead and grow the team. Mentor the current engineer, raise their ceiling, and establish the best practices.
Added 3 months ago
M
Senior Software Developer, API Platform
Miovision
Remote, Canada
- $150,000 to $170,000 CAD / year
- Full-time
- Remote
…development experience in Kotlin and/or Java (preferred), or Go, Python, or C, paired with hands-on experience in cloud-native ecosystems, AWS infrastructure, and…
Added 1 month ago
PC
Sr. Data Engineer - Toronto, ON (Hybrid)
Pozent Corporation
Toronto, ON
- Contract
We are seeking a hands-on Data Engineer to support the Total Fund Management Portfolio Management Technology team. This role focuses on building and optimizing large-scale data processing…
Added 1 month ago
PC
Senior AI Engineer - Toronto, ON
Pozent Corporation
Toronto, ON
- Contract
We are seeking an experienced AI Engineer to design and deliver scalable GenAI solutions. This subcontractor role focuses on building production�?ready AI products using Python, React, and…
Added 4 months ago
E
Thanks for visiting our Job Board. Please review our open positions and apply to the positions that match your qualifications.
Evertz
Burlington, Ontario
- Full-time
The FPGA Design Engineer at Evertz contributes to the development of advanced broadcast equipment used in real-time video and audio production, processing, and transport for Live sports…
Added 2 months ago
A
CCaaS Engineer
Accenture
Toronto, ON · Vancouver, BC · Calgary, AB
- Full-time
A hands-on CCaaS Engineer with deep technical expertise in Amazon Connect and Google Cloud Contact Center AI (CCAI). You are passionate about building scalable, intelligent customer…
Added 3 months ago
A
Senior Digital Twin Engineer (NVIDIA Omniverse / OpenUSD
Arcadion
Ottawa, ON
- Contract
Strong hands-on OpenUSD (USD Python API, composition arcs, custom schemas).
Added 3 months ago
V
Senior Machine Learning Engineer
Vancity
Vancouver, BC
- Full-time
As a Senior Machine Learning Engineer, you will join our Data Science & AI Pod, focused on designing, building, and deploying enterprise-wide AI and machine learning solutions that support…

Opendoor

Application Security Engineer

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Posting language: English
Posted: Jun 18, 2026

Original job description

About Opendoor

At Opendoor our mission is to tilt the world in favor of homeowners and those who aim to become one. Homeownership matters. It's how people build wealth, stability, and community. It's how families put down roots, how neighborhoods strengthen, how the future gets built. We're building the modern system of homeownership giving people the freedom to buy and sell on their own terms. We’ve built an end-to-end online experience that has already helped thousands of people and we’re just getting started.

About The Role

Our Security Engineering team builds intelligent systems that protect Opendoor and our customers while enabling unprecedented engineering velocity. We apply software engineering and AI to solve security problems across product, infrastructure, and operations by building guardrails where they matter, not gates where they don't.

As our Application Security Engineer, you'll own how we find, prioritize, and drive down application-layer risk across the consumer flows that put cash offers in homeowners’ hands, the GraphQL APIs that power our products, and the AI agents and vibe-coded tools our engineers ship every week. The job is to make it safe to build fast, not to slow things down.

What You'll Do

Define, build and operate Opendoor’s application vulnerability identification capability - the tooling, triage workflow and remediation techniques across our consumer products, internal admin tools and GraphQL API powering home acquisition, resale, mortgage, title and escrow.
Assess, rationalize and own our AppSec tooling stack - static and dynamic security testing, software supply chain risk detection and secrets scanning and integrate findings into developer workflows where engineers already live (GitHub, Linear, Slack).
Own and mature our HackerOne program: tightening the triage workflow, improving signal to noise on incoming reports, strengthening researcher relationships and closing the loop with engineering teams so root causes get addressed quickly.
Lead threat modeling and security design reviews for new services, APIs, and mobile features. Turn the patterns you see into rules, lint checks, and CI guardrails so the next team doesn't make the same mistake.
Build AI agents and automated workflows that triage vulnerability reports, validate exploit reproductions, and draft remediation pull requests, replacing manual security review with high-signal automation.
Partner with engineering teams to harden authentication, authorization, and input validation across our codebase and production services, including the GraphQL gateway (Apollo) and our Kubernetes workloads - while driving a shift-left strategy that catches vulnerabilities before they ship.
Build Opendoor’s offensive security capability. Scope and run internal security testing, red team exercises and adversarial analysis of our highest-risk flows ensuring findings directly harden detection and response.
Set the bar for what "secure by default" looks like for AI-maximalist engineering, including vibe-coded apps, MCP servers, and agent-driven workflows that touch production data.
Build Opendoor’s security culture by establishing secure design standards, embedding into engineering team rituals and developing a strong security mindset - creating a foundation for engineers to think like attackers without slowing down.

Tech Stack

Languages: Go, Python, TypeScript, Ruby, Terraform
Cloud: AWS, GCP, Azure, Kubernetes, Apollo GraphQL
AppSec Tooling: GitHub Advanced Security (CodeQL, Dependabot, secret scanning),

Semgrep, HackerOne, Burp Suite, Cloudflare WAF

AI Tooling: Claude, OpenAI, various agent frameworks, MCP - used heavily for vulnerability triage, exploit verification, and remediation drafting

What You'll Need

Deep conviction that AI and automation should eliminate manual work and increase the team's impact, and a track record to prove it. You’ve built agentic systems that replaced reactive security work, not just configured off-the-shelf tools.
Comfort operating with high autonomy in ambiguous environments. You’ve defined what “good” looks like in a domain where no playbook existed, you’re energized by that, not unsettled by it.
Business enablement security mindset. You measure success by business impact and informed risk-taking, not by tickets opened or pen test reports filed.
5+ years of application security or software engineering experience with a security focus, with strong skills in at least one of Python, Go, TypeScript, or Ruby, and the ability to read and write code across the others.
Hands-on expertise across the security risk detection toolchain with real deployment experience using GitHub Advanced Security, Semgrep, or equivalent.
Strong grasp of common application and API vulnerability classes including GraphQL, REST, and gRPC security pitfalls - broken authorization, mass assignment, introspection exposure, insecure direct object references.
Practical threat modeling skills. You can take an architecture diagram and a 30-minute conversation and walk out with the three things that actually matter.
Experience with cloud and container security on AWS and Kubernetes, including identity and access management, secrets management, and continuous integration / continuous deployment pipeline security.
Humility and genuine curiosity. You're as excited to learn from product engineers and enable their work as you are to break things.

Bonus Points

Offensive security experience including pentesting, API security, or mobile security, and/or red team operations.
Experience running a bug bounty or coordinated disclosure program at scale.
Mobile application security review experience (iOS and Android).
Experience securing AI and machine learning pipelines, agent frameworks, or MCP-style integrations.
OSCP, OSWE, or similar offensive certifications.

Location

This role is based in our downtown Toronto office, in-person four days per week (Monday, Tuesday, Thursday, Friday). Candidates must be based within commuting distance of the office.

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More about this job

Responsibilities

As an Application Security Engineer, you will define and operate Opendoor’s application vulnerability identification capability and lead threat modeling and security design reviews. You will also build AI agents and automated workflows to enhance security processes and partner with engineering teams to improve security across the codebase.

Requirements

Candidates should have 5+ years of application security or software engineering experience with a focus on security, and strong skills in at least one programming language such as Python, Go, TypeScript, or Ruby. A deep understanding of application and API vulnerabilities, along with practical threat modeling skills, is essential.

Skills

Application Security
Software Engineering
Python
Go
TypeScript
Ruby
Threat Modeling
Cloud Security
Kubernetes
GitHub Advanced Security
Semgrep
Vulnerability Management
Automation
AI
Security Testing
Incident Response

Visa sponsorship

Not detected in the job text

Keywords

Application Security
Software Engineering
Python
Go
TypeScript
Ruby
Terraform
AWS
GCP
Azure
Kubernetes
Apollo GraphQL
GitHub Advanced Security
Semgrep
HackerOne
Burp Suite
Cloudflare WAF
AI
Automation
Vulnerability Management
Threat Modeling
Security Testing
Incident Response
Mobile Security
Pentesting
Red Team Operations
Bug Bounty
Continuous Integration
Continuous Deployment
Identity Management

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