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- Manage and maintain security updates across multiple Linux distributions, focusing on Amazon Linux 2023.
- Oversee package management and updates for critical infrastructure components, including GitLab, MySQL, NGINX, and Wazuh.
- Implement and maintain email security protocols, such as DNS, DKIM, and SPF configurations.
- Manage enterprise-wide certificate lifecycle, including automated deployment using various certificate authorities and management systems.
- Design and implement Zero-Trust architecture and VPN solutions.
- Develop and maintain custom RPM repositories and packages.
- Create and maintain automation scripts using Bash and PowerShell.
- Perform security audits and implement remediation measures.
- Design, deploy, and maintain cloud infrastructure on AWS and Azure platforms.
- Collaborate with architecture and development teams to ensure cloud solutions align with business requirements.
- Monitor and optimize cloud resources to ensure performance, security, and cost-efficiency.
- Implement and manage DevOps practices, including CI/CD pipelines and automation.
- Stay up-to-date with industry trends and emerging technologies to recommend enhancements to the cloud infrastructure.
- Bachelor's degree in computer science, engineering, or a related field (or equivalent work experience).
- Strong proficiency in DNS management, Cloudflare, GitLab, and certificate management and deployment.
- Strong proficiency in Linux system administration and troubleshooting (minimum 7 years).
- Extensive experience with package management systems (RPM, YUM, DNF).
- Experience implementing and managing DevOps practices and tools.
- Solid understanding of networking concepts and protocols.
- Strong knowledge of email security protocols and implementations.
- Advanced scripting abilities in Bash, Python, and PowerShell.
- Experience building and maintaining custom RPM packages.
- Strong communication skills to interact with both technical and non-technical stakeholders.
- Deep understanding of Zero-Trust security principles and VPN technologies.
- Experience with containerization technologies (Docker, Kubernetes).
- Familiarity with infrastructure as code (IaC) tools like Terraform, Ansible, or CloudFormation.
- Knowledge of database administration (MS SQL, MySQL) is a plus.
- Strong knowledge of cloud infrastructure resources (AWS/Azure).
- Ability to interact effectively with stakeholders, architects, or solve technical challenges and issues.
- Provide prompt and accurate feedback to relevant stakeholders.
- Communicate effectively with managers, developers, and other stakeholders.
- Escalate unresolved issues to appropriate internal teams and senior stakeholders.
- Experience mentoring junior team members.
- Establish standards or best practices for cloud deployments, configuration, etc.
- Take ownership of issues reported and see problems through to resolution.
- Prioritize and manage several open issues to closure.
- Track issues through to resolution, within agreed time limits or commitments.
- Make use of internal tools for task management (experience with ITSM and/or Atlassian suite advantageous).
- Document and update the technical knowledge base, driving a learning culture and equipping the broader team for success.
- Proven knowledge of networking concepts is essential (e.g., TCP/IP, DNS, DHCP, subnets, routing, and firewalls).
- Experience implementing 24/7/365 monitoring and detection with alerts (e.g., uptime, utilization, resources, workloads, and optimization). Use of CloudWatch, Graylog, Zabbix, or other tools is essential.
- Experience deploying and implementing various cloud or open-source-based tools to support operational requirements.
- Experience implementing security best practices, such as IAM and roles, public clouds vs private zones, least privileges, segregation of duties, and change control, etc.
- Proven experience implementing CI/CD techniques (Octopus Deploy, TeamCity, Atlassian Pipelines, Jenkins, etc.).
- Beneficial experience promoting and architecting serverless workloads (e.g., Lambda, API Gateway, etc.) is highly beneficial.
- Experience in Docker and Kubernetes is beneficial.
- Experience migrating on-premises workloads to cloud or hosted-based environments; specifically, Windows and database (MSSQL, PostgreSQL, or MySQL) is beneficial.
- Experience in orchestration (Terraform, CloudFormation) is beneficial.
Senior Security Engineer - Johannesburg - Doxim Inc.

2 weeks ago

Description
Senior Systems Security Engineer
We are seeking an experienced Senior Linux Systems Security Engineer to oversee cloud and on-premise infrastructure security, system updates, and certificate management. The ideal candidate will have extensive experience with Linux systems administration, security protocols, and automation. You will collaborate with cross-functional teams to deliver seamless solutions that meet the needs of our business, including product support for various Doxim products hosted on these platforms.
Responsibilities
Qualification / Experience Requirements:
Preferred Qualifications
Attributes: Communication Skills:
Ownership:
Knowledge:
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