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Added 4 mins ago
H
Data & Analytics Architect
HRConnects
Toronto, ON
- Full-time
Are you passionate about shaping the future of data and AI solutions? Join us as a Data & Analytics Architect and lead transformative projects that elevate enterprise data platforms to new…
Added 5 mins ago
L
Senior Applied Epic Business Systems Analyst
Lockton
Toronto, ON · Greater Toronto Area, Canada
- $115,000 to $140,000 CAD / year
- Full-time
Lead or support requirements, testing, defect management and implementation readiness.
Added 7 mins ago
Structural Engineer
LAPORTE L.E.I.
Toronto, ON
…structural design and analysis, who will contribute to the integration of structural solutions in our industrial projects. This person will play a key role in the design, implementation,…
Added 7 mins ago
Structural Engineer
LAPORTE L.E.I.
London, ON
…structural design and analysis, who will contribute to the integration of structural solutions in our industrial projects. This person will play a key role in the design, implementation,…
Added 1 hour ago
PH
Medical Lead, Advanced Cardiac Imaging - BC Children's Hospital & The University of British Columbia (UBC)
Provincial Health Services Authority
Vancouver, BC
- Part-time
…is to build an advanced imaging program that strengthens the integration between Radiology and Cardiology. Its primary goal will be to produce imaging that maximizes value for clinical…
Added 1 hour ago
UO
Coordinator, Student Development
University of Victoria
Victoria, BC
- Full-time
Reporting to the Manager, Educational Integration, the Coordinator, Student Development is responsible for leading the design, coordination, implementation, and evaluation of…
Added 1 hour ago
DR
Senior Financial Analyst 3 - Financial Services
Durham Region (The Regional Municipality of Durham)
Whitby, ON
- Temporary
Lead or participate as a subject matter expert in various projects involved in the development, upgrade and enhancement of financial system applications, accountability frameworks,…
Added 1 hour ago
NC
Project Manager, Internal Initiatives
Nuvollo Corp.
Toronto, ON
- Full-time
Lead and coordinate internal projects across HR, Finance, Operations, Technology, and Corporate Services
Added 1 hour ago
GC
Geomodeller/Structural Geologist
GEI Consultants, Inc.
Listowel, ON
- Full-time
…strengthening our local roots while expanding our reach. This integration brings together deep regional knowledge, a legacy of trusted relationships, and the technical excellence GEI is…
Added 1 hour ago
J
Environmental Impact Assessment Professional
Jacobs
Ottawa, ON
- $15,000 to $98,500 USD / year
- Full-time
Lead internal and client progress meetings, workshops, and page flips
Added 1 hour ago
CI
Ingénieur mécanique principal / Senior Mechanical Engineer
Calian in Space & Technology
Vaudreuil-Dorion, QC
- Full-time
Fournir un soutien à l’équipe d’intégration des antennes.
Added 1 hour ago
ST
Technical Expert - Aircraft Structures
SEGULA Technologies
Montreal, QC
- Full-time
Lead the development of conceptual layouts and integration solutions for structures and systems across the complete airframe.
Added 1 hour ago
ST
Technical Expert - Aircraft Structures
SEGULA Technologies
Montreal, QC
- Full-time
Lead the development of conceptual layouts and integration solutions for structures and systems across the complete airframe.
Added 1 hour ago
J
Environmental Impact Assessment Professional
Jacobs
Toronto, ON
- $15,000 to $98,500 USD / year
- Full-time
Lead internal and client progress meetings, workshops, and page flips
Added 1 hour ago
K
Senior Mechanical Engineer
Kinectrics
Toronto, ON
- Full-time
Provide senior mechanical engineering leadership for the design, fabrication, procurement, integration, testing, commissioning, and troubleshooting of nuclear equipment, skid-based process…
Added 1 hour ago
J
Environmental Impact Assessment Professional
Jacobs
Burnaby, BC
- $98,500 to $153,850 USD / year
- Full-time
Lead internal and client progress meetings, workshops, and page flips
Added 1 hour ago
LA
Sr. Content Manager & Influencer Partnership
Loblaw Agency
Brampton, ON
- Full-time
This role will lead social content and influencer programming across assigned portfolios, connecting brand strategy, creator partnerships, and platform-native storytelling into integrated…
Added 1 hour ago
C
Solution Delivery and Integration Lead
CGI
Toronto, ON
- Contract
We are seeking an experienced Solution Delivery and Integration Lead to drive the end-to-end delivery of complex, integrated technology solutions across multiple teams, systems, and…
Added 1 hour ago
FI
Director, Product & Strategy
Fulfillment IQ
Toronto, ON
- $140,000 to $160,000 CAD / year
- Full-time
We are looking for a Director, Product & Strategy to lead our Tech Delivery practice across both sides of the house: the internal teams that build, and the client relationships that fund…
Added 1 hour ago
CS
Salesforce Project Manager / Scrum Master
Cloud SynApps Inc.
Montreal, QC
- Full-time
Cloud SynApps is a fast-growing consulting and systems integration firm that focuses on cloud applications, primarily on Salesforce-based platforms. Cloud SynApps has its major operations…
Added 1 hour ago
FH
Learning Facilitator/Instructor (Nursing)
Fraser Health Authority
Surrey, BC
- $49.2 to $67.08 CAD / hour
- Full-time
…to clinical and non-clinical staff, enabling the successful integration of digital technologies into daily…
Added 2 hours ago
NB
Associate Director or Director
National Bank of Canada
Montreal, QC
- Full-time
…leverage your expertise in securities trading and financing to lead the assessment and integration of complex, high-impact initiatives by influencing key operating model design decisions,…
Added 2 hours ago
HT
Financial Manager
Husky Technologies
Bolton, ON
- Full-time
During the month end close, review process and integration issues in BAAN and AX. Liaison with IT and/or Controllership to resolve prior to the period close. This requires a comprehensive…
Added 2 hours ago
SI
Faculty Development & Learning Management System Coordinator
Saskatchewan Indian Institute of Technologies (SIIT)
Saskatoon, SK
- Full-time
…faculty and teaching staff. The role provides support for the integration of instructional content into the SIITs LMS, providing instructional design support to faculty, and ensuring…
Added 2 hours ago
BI
R&D Design Engineer
Bourgault Industries Ltd.
Saskatoon, SK
- Full-time
Lead and support prototype fabrication, assembly, and testing in both shop and field environments.

Opendoor

Application Security Engineer

Toronto, ON, Canada

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Job details

Posting language: English
Posted: Jun 17, 2026

Original job description

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.

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

We're looking for team members who are enthusiastic about an in-office culture - people who want to build alongside others and not from a distance. This role is based in one of our talent hubs where we welcome everyone 5 days a week with the requirement of Mo, Tu, Th, Fri.

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More about this job

Responsibilities

The Application Security Engineer will define and operate vulnerability identification capabilities while building AI-driven workflows to automate security triage and remediation. They will also lead threat modeling, security design reviews, and partner with engineering teams to harden production services and infrastructure.

Requirements

Candidates must have strong software engineering experience with a security focus and proficiency in Python, Go, TypeScript, or Ruby. The role requires hands-on expertise in application security tooling, cloud/container security, and a proven track record of using automation to solve security challenges.

Skills

Application Security
Software Engineering
Python
Go
TypeScript
Ruby
GraphQL
Kubernetes
AWS
GCP
Threat Modeling
Vulnerability Management
CI/CD
Offensive Security
AI Automation
Cloud Security

Visa sponsorship

Not detected in the job text

Keywords

Application Security
Security Engineering
Go
Python
TypeScript
Ruby
Terraform
AWS
GCP
Kubernetes
Apollo GraphQL
GitHub Advanced Security
CodeQL
Dependabot
Semgrep
HackerOne
Burp Suite
Cloudflare WAF
AI Agents
Threat Modeling
Red Teaming
Offensive Security
API Security
Shift-left
Vulnerability Triage
Identity and Access Management
CI/CD Pipeline Security
OSCP
OSWE
Mobile Security

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