Web application developer Jobs in Montreal, QC

Job Description – Senior Application Security Developer (Python & AI Security)

Position Overview

We are seeking a Senior Application Security Developer with strong Python development expertise and hands-on experience in Application Security and AI/LLM Security.

This is a development-focused role for someone who can build, automate, and integrate security capabilities into enterprise applications and CI/CD pipelines, with a particular focus on leveraging AI to improve vulnerability detection, prioritization, analysis, and remediation.

Must-Have Requirements

• Strong hands-on Python development experience, including API development, scripting, automation, and integration.
• Strong experience with Application Security (AppSec) and secure software development practices.
• Experience integrating and automating security tooling within CI/CD and DevSecOps pipelines.
• Experience applying AI/LLM technologies to Application Security, including:
  • AI-assisted SAST and SCA
  • Secrets scanning
  • Vulnerability prioritization
  • Exploitability and reachability analysis
  • Attack path analysis
  • Automated remediation
• Hands-on knowledge of LLMs, AI agents and RAG architectures.
• Understanding of prompt security, AI model security, AI guardrails, runtime protection, and model lifecycle security.
• Experience developing or integrating AI-powered security tooling and capabilities.
• Strong understanding of Cloud Security and modern cloud-native application architectures.

Key Responsibilities

• Develop Python-based security applications, APIs, automation, and integrations.
• Build and enhance AppSec capabilities across the software development lifecycle.
• Integrate SAST, SCA, secrets scanning, and vulnerability management tooling into development workflows.
• Develop AI-assisted capabilities for vulnerability analysis, prioritization, exploitability assessment, and remediation.
• Build security controls and guardrails for LLM and AI-enabled applications.
• Support the implementation of AI Security Posture Management (AI-SPM) and AI asset inventory capabilities.
• Automate security processes and integrate security capabilities into CI/CD pipelines.
• Contribute to AI security standards, ML SecOps practices, and secure AI development guidelines.

Good-to-Have

• Java development experience.
• Experience building scalable, self-service security platforms for development teams.
• Experience with cloud-native security and containerized environments.
• Experience building or integrating enterprise AI/LLM security solutions.

Experience integrating APIs for AI models (OpenAI, Anthropic, or similar) Ability to translate security requirements into automated AI workflows By submitting to this position, you are agreeing to be included in our talent pool for future hiring for similarly qualified positions

EEO Notice

Vaco by Highspring is an Equal Opportunity Employer and does not discriminate against any employee or applicant for employment because of race (including but not limited to traits historically associated with race such as hair texture and hair style), color, sex (includes pregnancy or related conditions), religion or creed, national origin, citizenship, age, disability, status as a veteran, union membership, ethnicity, gender, gender identity, gender expression, sexual orientation, marital status, political affiliation, or any other protected characteristics as required by federal, state or local law.

Vaco by Highspring and its parents, affiliates, and subsidiaries are committed to the full inclusion of all qualified individuals. As part of this commitment, Vaco by Highspring and its parents, affiliates, and subsidiaries will ensure that persons with disabilities are provided reasonable accommodations. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please contact HR@vaco.com.

Vaco by Highspring also wants all applicants to know their rights that workplace discrimination is illegal.

Representation Notice

By submitting to this position, you agree that you will be giving Vaco by Highspring the exclusive right to present your as a candidate for the foregoing employment opportunity. You further agree that you have represented information about yourself accurately and have not affirmatively misrepresented your qualifications. You also agree to maintain as confidential, to the fullest extent permitted by law, any information you learn from Vaco by Highspring about the position and you will limit disclosure of information about the position only to the extent necessary to perform any obligations in furtherance of your application. In exchange, Vaco by Highspring agrees to exercise reasonable efforts to represent you through all solicitation, job screening and resume dispersal.

For residents of Ontario, Canada: Based on Highspring’s discussions with its Client, Highspring’s understanding is that this position for employment is a current vacancy (either through Highspring as a contractor or with the client directly).

Privacy Notice

Vaco by Highspring and its parents, affiliates, and subsidiaries (“we,” “our,” or “Vaco by Highspring”) respects your privacy and are committed to providing transparent notice of our policies.

• California residents may access Vaco by Highspring HR Notice at Collection for California Applicants and Employees here.
• Virginia residents may access our state specific policies here.
• Residents of all other states may access our policies here.
• Canadian residents may access our policies in English here and in French here.
• Residents of countries governed by GDPR may access our policies here.

Additionally, submissions to this position are subject to the use of AI to perform preliminary candidate screenings, focused on ensuring minimum job requirements noted in the position are satisfied. More details about Vaco by Highspring’s use of AI can be found here (https://www.highspring.com/ai-use-notices/). Further assessment of candidates beyond this initial phase will be conducted by recruiters and hiring managers. Vaco by Highspring does not know and cannot opine on if its client’s use of AI products in hiring.

Pay Transparency Notice

Determining compensation for this role (and others) at Vaco by Highspring depends upon a wide array of factors including but not limited to:

• the individual’s skill sets, experience and training;
• licensure and certification requirements;
• office location and other geographic considerations;
• other business and organizational needs.

With that said, as required by local law, Vaco by Highspring believes that the following salary range referenced above reasonably estimates the base compensation for an individual hired into this position in geographies that require salary range disclosure. The individual may also be eligible for discretionary bonuses.