Senior Python Developer – Security Automation

Location: Markham or Toronto, ON – Hybrid, currently 2 days onsite

Duration: Contract

Preferred Location: Markham The Role

We are seeking a Senior Python Developer to join an enterprise security automation team responsible for building secure, scalable cryptographic automation solutions.

The successful candidate will primarily develop Python/FastAPI REST APIs that orchestrate certificate and key lifecycle workflows and integrate with enterprise security, DevOps and service-management platforms.

Key Responsibilities

- Design, develop and maintain RESTful APIs using Python and FastAPI.
- Build automation supporting certificate and cryptographic key lifecycle workflows.
- Integrate APIs with platforms such as ServiceNow, certificate lifecycle management (CLM), key management systems (KMS) and DevOps tools.
- Develop and maintain infrastructure and deployment automation.
- Participate in code reviews and architecture discussions.
- Document API contracts and technical solutions.
- Develop unit and integration tests.
- Provide L3 production support and troubleshooting.
- Deliver new features, maintenance enhancements and bug fixes.

Must-Have Skills




- 8+ years of security-related technology experience.
- 5+ years of strong professional Python development experience, specifically including FastAPI.
- 3+ years of automation and Infrastructure-as-Code experience using tools such as Ansible, Terraform, Jenkins, GitHub Actions or equivalent.
- Solid REST API development and integration experience.
- Strong troubleshooting and problem-solving skills.
- Excellent communication, organization and attention to detail.
- Self-starter who can adapt effectively within a technical environment.

Nice to Have
- TLS/SSL certificate management and PKI concepts, including issuance, renewal and revocation.
- Experience with Venafi, HashiCorp Vault, CyberArk or similar PKI/secrets-management platforms.
- Venafi REST API experience is a strong asset.
- ServiceNow integration experience, including CMDB or workflow automation.
- Linux and/or Windows server support experience.
- CISSP certification.

Note: We use AI tools to: obtain basic information, detect plagiarism, false employment history or references, categorize your skills, and do an initial match with job posting.

📌 Senior Python Developer – Security Automation (Toronto)
🏢 Infotek Consulting
📍 Toronto