Senior AWS Security DevOps Engineer

This role is part of a DevOps team focused on delivering security services for Mastercard’s RiskRecon product. The environment is 100% AWS-based, spanning dozens of accounts that provide infrastructure and security capabilities. The ideal candidate will be proficient in AWS services, especially in infrastructure, security, automation, deployment maturity, monitoring, and self-healing environments. This role requires close collaboration with development teams and product management to maintain a fast-paced delivery cycle while ensuring robust security and uptime.

Key Responsibilities

AWS Networking

• Configure and manage VPCs, Subnets, NAT, NACLs, Security Groups, VPC Endpoints, Transit Gateways, Routing Tables, Network Interfaces.

• Manage Application Load Balancers, Network Load Balancers, Target Groups, Listener Routing, and Network Bridging.

• Implement WAF rules, Shield configuration, DDOS protection, and CloudFront.

• Configure Route 53 for DNS management.

Compute & Container Services

• Manage EC2 instances: Linux, hardened AMIs, snapshots, Auto Scaling Groups, and Launch Templates.

• Work with ECS (Docker, Tasks, Clusters) and EKS (Docker, Kubernetes resources, clusters).

Monitoring & Security

• Utilize CloudTrail and CloudWatch for logging, monitoring, and alerting infrastructure/security events.

• Manage IAM roles, policies, resource policies, conditions, and SCPs for access control.

• Ensure compliance and reporting using AWS Config.

Automation & Administration

• Use AWS CLI and Systems Manager for automation and environment administration.

• Implement infrastructure as code using Terraform and AWS CodeCommit.

• Perform Linux system administration, shell scripting, host monitoring, and tuning.

Additional Services & Tools

• Work with RDS, KMS, HSM, AWS Workspaces, and Git for version control.

Qualifications

• 10+ years of experience in enterprise-level IT environments.

• 5+ years of hands-on experience with AWS multi-account environments.

• Strong knowledge of security, monitoring, and automation practices within AWS.

• Bachelor’s degree in Computer Science, Information Technology, or related field.

• Excellent communication skills and ability to work both independently and collaboratively.

• Experience in producing technical documentation and security reports.