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Added 3 days ago
Senior Software Engineer, Internal Tools
Tubi
Toronto, ON
Full-time
Strong programming proficiency in a statically typed language such as Rust, Go, C++, Java, Kotlin, C#, or TypeScript. Production Rust is a plus rather than a requirement.
Added 3 days ago
Integrator engineer
Tata Consultancy Services
Montreal, QC
Full-time
4. Strong focus on delivery when presented with short timelines and increased involvement from senior management.
Added 3 days ago
Python (Ab Initio) Engineer
Citi
Mississauga, ON
Full-time
The Applications Development Senior Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application…
Added 3 days ago
Senior AI Engineer
Tekgence Inc
Toronto, ON
Contract
Strong JVM engineering (Java; Kotlin or Scala a plus) with solid practices: Git workflows, code review, automated testing, structured logging, and clean design.
Added 3 days ago
Senior Software Engineer, Internal Tools
Tubi - Canada
Toronto, ON
Strong programming proficiency in a statically typed language such as Rust, Go, C++, Java, Kotlin, C#, or TypeScript. Production Rust is a plus rather than a requirement.
Added 4 days ago
Applications Development Technology Lead Analyst - Lead Java Developer - Vice President
Citi
Mississauga, ON
Full-time
The Applications Development Technology Lead Analyst (Lead Java Developer) is a senior-level position responsible for leading the architectural design, implementation, and continuous…
Added 4 days ago
Software Developer - Full Stack - Senior (Java and WebFOCUS exp)
Bevertec
Toronto, ON
Contract
Job Role: Software Developer - Full Stack - Senior (Java and WebFOCUS exp)
Added 5 days ago
Senior Software Engineer
Great Value Hiring
Canada
Contract
Contribute expert-level code samples, debugging strategies, and development insights in Python3, Java, Rust, Go, C++, or TypeScript
Added 5 days ago
Senior Software Engineer, Backend
Brex
Vancouver, BC
As an engineer at Brex, you will help develop new products from concept to launch, whether for a 5-person startup or a 5,000-person-strong enterprise. We’re looking for folks with an…
Added 6 days ago
Software Developer 1, Canada Tax Content
Intuit
Toronto, ON
Full-time
…products. This is an entry-level, growth-oriented role for an engineer developing proficiency across the full software development lifecycle - you'll deliver well-defined tasks under close…
Added 14 days ago
Lead Software Engineer
RBC
Toronto, ON
Full-time
As a Lead Software Engineer at RBC, you will play a key role in designing, developing, and delivering software solutions of high complexity. This role emphasizes independence, adaptability,…
Added 11 days ago
Lead Full Stack Developer
RBC
Toronto, ON
Full-time
At its core, this role requires excellent problem-solving skills and C#/.Net, Java, Python and full stack coding capability. This role will need to effectively communicate, collaborate, and…
Added 6 days ago
Software Development Manager
EDealer
Canada
Full-time
This role exists because the team is senior and self-directed enough not to need a full-time coordinator, and because we would rather its manager stay close to the work than drift away from…
Added 7 days ago
Senior Integration Engineer
Agiloft
Canada
Full-time
We are hiring a Senior Integration Engineer to build and productize integrations between Agiloft and strategic ISV partners. This is a hands-on engineering role with regular partner…
Added 6 days ago
Senior AI Engineer
Apptoza Inc.
Toronto, ON
Contract
We are looking for an experienced and highly motivated Senior AI Engineer to join Canada segment’s Technology Strategy team.
Added 6 days ago
Backend Engineer, Consumer
HelloFresh
Toronto, ON
We are looking for an engineer to help implement solutions & write beautiful code, working with various team members as we build out our consumer facing applications & the infrastructure…
Added 6 days ago
Senior Software Engineer – Full Stack (AI First)
Precisely International Jobs
Canada
We are seeking an experienced and technically strong Senior Software Engineer to join our Master Data Management (MDM) product line within Precisely’s Data Integrity Suite. In this role,…
Added 6 days ago
Java Software Engineer
Randstad Enterprise
Montreal, QC
Full-time
We are seeking a Java Engineer in the Firm Market Risk Technology team, you will design, build, and optimize high-performance Java systems powering the Firm Market Risk Platform. In this…
Added 6 days ago
Senior Data Engineer
Galent
Markham, ON
Contract
Added 7 days ago
Senior Applications Developer - Assistant Vice President
Citi
Mississauga, ON
Full-time
…within Equities Technology. This role is for a hands-on Software Engineer experienced in JVM-based languages development who has strong architectural and design expertise to work on the…
Added 7 days ago
Team Lead, Senior Fullstack Engineer
Arcadia
Toronto, ON
$160,000 to $220,000 CAD / year
Full-time
A fast-growing AI software company is hiring a Team Lead, Senior Full Stack Software Engineer in Toronto to help build a modern enterprise platform used to manage, monitor, and scale AI…
Added 7 days ago
Senior Software Engineer II, KYC
Carta
Waterloo, ON
Full-time
As a Senior Software Engineer II, KYC, You Will Lead Technically Complex Projects And Serve As a Multiplier For Your Team. You’ll Work To
Added 7 days ago
Senior Software Engineer II, KYC
Carta
Toronto, ON
Full-time
As a Senior Software Engineer II, KYC, You Will Lead Technically Complex Projects And Serve As a Multiplier For Your Team. You’ll Work To
Added 7 days ago
Software Engineering Team Lead
Exchange Solutions
Toronto, ON · Greater Toronto Area, Canada
Full-time
As a Team Lead at Exchange Solutions, you are the senior hands-on engineer on your team, delivering a product area of our platform. You set the technical standard in the code your team…
Added 7 days ago
Senior Analytics Developer
CNN
Ottawa, ON · Kanata, ON
Full-time
You think about the long-term health of your work, your monitoring, your alerting, and your documentation. You nurture all of these in parallel to your engineer responsibilities.

Closed listing

Epsilon Solutions Ltd.

Offensive Security Engineer

Toronto, ON, Canada

Job type: Contract
Closing date: Oct 21, 2026
Posting language: English
Posted: Sep 21, 2026

This opening has closed.

The original listing is kept below for reference.

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Added 1 day ago
Senior DevSecOps & AI Engineer
J&M Group · Toronto, ON, Canada
Added 2 days ago
SecOps Engineer
CSC Generation · Toronto, ON, Canada
Added 8 days ago
Senior Penetration Tester & Red Team Engineer
Cognizant · Toronto, ON, Canada
Added 9 days ago
Offensive Security Engineer
Epsilon Solutions Ltd. · Toronto, ON, Canada

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Original job description

Archived listing. The details below describe a past opening.

Role: Offensive Security Engineer

Toronto, Hybrid

Job Description

As “Principal Consultant, Agentic AI Cybersecurity Engineer” you will work hands-on alongside our cybersecurity engineering and application security teams to build, operate, and advance the agentic AI systems that find, exploit, and remediate vulnerabilities end-to-end across our application and infrastructure estate. Operating at a principal engineer level, you will personally direct frontier AI models do discover vulnerabilities in production code, develop proof-of-concept exploits, generate and validate fixes, and integrate them into CI/CD pipelines with safe human-in-the-loop controls. You will also build reusable AI skills, prompts, and tooling that make agentic vulnerability management efficient and scalable across the estate. You will bring deep dual expertise across offensive and defensive security, penetration testing, and software engineering, and apply that fluency to push the boundaries of what is possible with agentic AI in a regulated enterprise environment.

What will you do?

Architect and operationalize the end-to-end agentic AI patching pipeline spanning detection, fix generation, automated testing, and release across SAST, DAST, SCA, IAST, container, and server vulnerabilities.
Use frontier AI models to discover novel vulnerabilities in production application and infrastructure code, develop proof-of-concept exploits, and validate that AI-generated fixes close the underlying root cause.
Build and maintain the library of reusable AI skills, prompts, evaluation harness, and tooling that power agentic vulnerability discovery, triage, remediation, false positive analysis, and exemption workflows at scale.
Design and operationalize AI-driven false positive analysis and exemption processes to reduce manual triage burden and surface only actionable findings to development teams.
Conduct hands-on penetration testing and red team exercise against critical applications and infrastructure to validate defensive controls and agent-generated remediations.
Extend agentic remediation coverage across SAST, SCA, DAST, IAST, container, and server vulnerabilities, including the data and tooling needed to connect findings back to source.
Design agent prompting, guardrails, evaluation frameworks, and appropriate human-in-the-loop controls to ensure safe autonomous code changes, testing, and deployment.
Drive integration of agentic remediation into enterprise CI/CD pipelines (Github, Jenkins, etc.) across the deployment landscape.
Communicate technical design, risk trade-offs, and delivery progress clearly to senior stakeholders including CIO, CISO, 2LOD, and Audit functions.

Must-have:

10+ years hands-on experience across software engineering, offensive security, and defensive security at a principal engineer level, with demonstrated personal contributions to production codebases and published vulnerability research or penetration testing engagements.
Advanced technical proficiency in multiple programming language (Java, C#, C, C++, Python, JavaScript/TypeScript, .NET, Go) with proven ability to personally write, review, and remediate production code.
Deep fluency in vulnerability classes including memory safety, injection authentication and authorization flaws, cryptographic misuse, deserialization, race conditions, and supply chain attacks, with hands-on experience finding and exploiting each.
Extensive hands-on experience with penetration testing, red teaming, exploit development, reverse engineering, and secure code review against OWASP Top 10 and SANS 25, combined with defensive engineering experience building detection and remediation capabilities.
Extensive hands-on experience with application security testing tools (SAST, DAST, IAST, SCA), including tuning, false positive analysis, exemption workflow design, and enterprise vulnerability management at scale.
Deep technical fluency with agentic AI coding tools and frameworks (Claude, Devin, Copilot, Windsurf, Cursor, MCP, including prompt engineering, agent orchestration, reusable skill and tool design, guardrail design, and evaluation.
Strong architectural knowledge of modern CI.CD, container platforms (Docker, Kubernetes), cloud-native deployment patterns, and integration of security automation into developer workflows.

Nice-to-have:

Relevant security certifications (OSCP, OSCE, OSEP, GXPN, GWAPT, CISSP, or equivalent).
Experience in financial services or highly regulated industries with exposure to SOX, SOC1, and regulatory audit.
Public evidence of offensive capability: published CVEs, bug bounty track record, conference talks (DEFCON, Black Hat, Offensive Con, Recon), CTF placements, or open-source security tooling contributions.
Hands-on experience with enterprise vulnerability tooling (Tenable, Aqua, Snyk, BrightSec) and remediation at scale.
Demonstrated ability to advise senior technology leaders and deliver within complex, multi-stakeholder enterprise environments.

About employer

More about this job

Responsibilities

You will architect and operationalize end-to-end agentic AI systems to detect, exploit, and remediate vulnerabilities across application and infrastructure estates. Additionally, you will build reusable AI skills and tooling to scale vulnerability management while conducting red team exercises to validate defensive controls.

Requirements

The role requires 10+ years of hands-on experience in software engineering, offensive security, and defensive security at a principal level. Candidates must possess deep technical fluency in multiple programming languages, vulnerability classes, and modern agentic AI coding frameworks.

Skills

Offensive Security
Defensive Security
Agentic AI
Penetration Testing
Software Engineering
Vulnerability Management
CI/CD Pipelines
Prompt Engineering
Red Teaming
Secure Code Review
Python
Java
Docker
Kubernetes
Cloud-native
Application Security

Visa sponsorship

Not detected in the job text

Keywords

Offensive Security Engineer
Agentic AI
Cybersecurity
Penetration Testing
Red Teaming
SAST
DAST
SCA
IAST
CI/CD
Docker
Kubernetes
Python
Java
JavaScript
TypeScript
Go
Prompt Engineering
Vulnerability Research
OSCP
CISSP
OWASP Top 10
SANS 25
Cloud-native
Reverse Engineering
Secure Code Review
Automation
Risk Management
Financial Services
Compliance

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