Sr. Cloud Security Engineer

About the Role:

Motive is looking for a Sr. Cloud Security Engineer to join our Security Engineering team. You will design and implement secure cloud architectures, build automations, and deploy AWS-native controls to protect our platform at scale. You will work hands-on in AWS, writing code, building guardrails, improving identity architecture, and creating secure patterns for infrastructure teams.

This is a highly technical role for engineers who want to build, not just review—engineers who enjoy designing systems, automating everything, and raising the security bar through engineering excellence.

What you’ll do:

• Architect and implement secure AWS infrastructure patterns (IAM, VPC, KMS, EKS, Lambda, ECS/Fargate, S3, CloudTrail, etc.)
  
  
• Write high-quality code (Python, Go preferred) to build automations, tooling, and internal security services
• Build cloud guardrails, AWS Config rules, SCPs, and automated remediation workflows
• Design and implement "secure defaults" and paved roads for engineering teams
• Partner with Infra, SRE, and Application teams to design secure systems and APIs
• Improve least privilege across human and non-human identities through automation
• Build event-driven detections using CloudTrail, EventBridge, Lambda, and Step Functions
• Threat model new services and provide actionable architecture guidance
• Own key domains such as secrets management, container security, and network segmentation
• Drive measurable security outcomes with data and code
• Contribute to documentation, playbooks, and reusable patterns
  
  

What we’re looking for:

• Strong cloud security fundamentals (identity, networks, encryption, isolation, boundary design)
• Deep hands-on experience with AWS security services: IAM, KMS, S3, CloudTrail, GuardDuty, Config, Security Hub, VPC, WAF
• Ability to design, write, and maintain automations using Python or Go
• Experience architecting multi-component distributed systems in AWS
• Ability to design solutions end-to-end and break them into executable pieces
• Strong debugging, root cause analysis, and system thinking abilities
• Experience with threat modeling and risk analysis in cloud workloads
• Proven ability to collaborate cross-functionally with Infra/SRE/Product teams
• Ability to self-manage and drive projects from design to deployment
• Strong communication habits and an ability to explain complex tradeoffs cleanly
  
  

Bonus skills:

• Experience with Kubernetes/EKS, ArgoCD, Terraform, or CloudFormation
• Experience with IoT or edge device security
• Experience with multi-account AWS Org design
• Experience with CI/CD security and software supply chain controls
• Experience building identity automation or least privilege workflows