We are seeking a seasoned Senior Systems Administrator to lead the management and optimization of our Cloudflare environment and broader cloud infrastructure. This role demands hands-on expertise in Cloudflare services—DNS, WAF, CDN, caching, proxy, and security configurations—to enhance the performance and protection of our global web platforms.
You will also manage cloud platforms such as OCI, AWS, Azure, or GCP, with a strong focus on Linux/Unix systems, automation, observability, and hybrid infrastructure operations.
Key Responsibilities
Cloudflare Administration
Manage DNS, WAF, firewall rules, caching, and rate limiting policies
Optimize proxy configurations, security settings, and performance features (e.g., Argo, Workers)
Mitigate threats (DDoS, bots) and conduct regular audits
Maintain documentation and stay updated with new Cloudflare features
Cloud & Infrastructure Management
Administer and optimize OCI or other cloud platforms (compute, storage, IAM, networking)
Automate deployments using Terraform, Ansible, and CI/CD pipelines
Monitor and troubleshoot performance using Grafana, Prometheus, Zabbix, etc
System Operations
Perform system maintenance and patching on Linux/Unix platforms
Troubleshoot OS, hardware, and database (MySQL/PostgreSQL) issues
Automate routine tasks via Bash, Python, or Ruby scripts
Required Skills
3–5+ years of hands-on Cloudflare experience in production
Strong understanding of Cloudflare WAF, DNS, CDN, caching, and Zero Trust
Expertise in managing proxies (NGINX, HAProxy), DDoS mitigation
Scripting knowledge: Python, Bash, or Ruby
Proficiency with IaC tools (Terraform), observability (Grafana, Prometheus)
Solid networking fundamentals: TCP/IP, HTTP/S, DNS, TLS/SSL
Cloud experience with OCI or equivalent (AWS, Azure, GCP)
Preferred Experience
6+ years managing hybrid cloud infrastructure
Experience with Cloudflare Workers, Pages, or Load Balancing
Familiarity with CI/CD, Ansible, Puppet, or OCI CLI
Security/cloud certifications (OCI, AWS, Azure)
Why you'll love us
We offer a 100% remote position with a monthly home office allowance of R$180.00 and an additional allowance for purchasing items for your office.
We provide Meal Vouchers or Food Vouchers worth R$44.55 per working day.
Health and dental insurance with no co-payment for employees.
Well-being program: Wellhub and Telemedicine!
Do you have a dog, cat, rabbit, hamster, goat, turtle, or even a mini dragon? We have a partnership for pet health insurance!
Life insurance.
Free website hosting.
Merit and promotion annual cycle.
And muuuuuuch more!