Senior Cloud & Systems Engineer - Reliability & Security

ZenithFlow, Inc.; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

ZenithFlow, Inc. is seeking an IT/Systems Engineer for Technical Operations to own the infrastructure behind CognitiveOS and internal systems. You will ensure reliability, security, and speed across cloud, networks, and core services.

The role emphasizes end-to-end ownership, hands-on administration of Linux servers, IaC, monitoring, incident response, and security best practices in a fast-moving environment.

Qualifications

• 4+ years in systems/infrastructure engineering, IT ops, SRE, or related
• Hands-on experience with a major cloud provider (AWS, GCP, or Azure) — compute, networking, IAM
• Strong Linux administration and command-line troubleshooting
• Practical infrastructure-as-code experience (Terraform, Ansible, or similar) and Git
• Scripting ability in Bash plus at least one language (Python or Go)
• Solid networking fundamentals (DNS, TCP/IP, HTTP, TLS, VPNs, firewalls) and debugging skill
• Monitoring/incident experience (Datadog, Prometheus/Grafana, CloudWatch, or similar) with calm incident judgment
• Security-first mindset: least privilege, secrets management, defense in depth

Responsibilities

• Provision, configure, and maintain cloud compute, storage, and networking (secure and cost-aware)
• Manage infrastructure as code (Terraform or equivalent) and write scripts to eliminate manual toil
• Own Linux server administration, patching, and hardening, plus core services (DNS, load balancing, certificates)
• Build and tune monitoring/observability so issues are caught early with meaningful alerts
• Lead or support incident response and write blameless postmortems that drive real fixes
• Administer identity and access — SSO, MFA, role-based access across cloud/SaaS tools (least-privilege)
• Support internal IT: endpoint provisioning, device security, onboarding/offboarding
• Strengthen security/compliance posture: backups, disaster-recovery procedures, controls

Skills

Cloud compute

Terraform

Linux admin

Bash scripting

Python

Go

Networking basics

Monitoring

Incident response

IAM

Tools

Datadog

Prometheus

Grafana

CloudWatch

Terraform

Job description

ZenithFlow, Inc. is seeking an IT/Systems Engineer for Technical Operations to own the infrastructure behind CognitiveOS and internal systems. You will ensure reliability, security, and speed across cloud, networks, and core services.

The role emphasizes end-to-end ownership, hands-on administration of Linux servers, IaC, monitoring, incident response, and security best practices in a fast-moving environment.