About the role
Job Application for Cloud Engineer at Arena.im Cloud Engineer Brazil - Remote Apply About Arena: Arena is a Series A company backed by top-tier investors such as CRV, Redpoint and Craft Ventures. Arena offers a unique work environment and the chance to collaborate with diverse teammates across multiple countries, with a culture of ownership (autonomy, growth, and responsibility). We are a startup created in Silicon Valley with a mission to build communities for creators, publishers and brands with the power of AI. Companies using Arena include Disney, Reuters, Fox, Red Bull and NFL. We have +2,000 customers in 150 countries and with +50M users having conversations on Arena per month and engaging with our Agent AI. Sometimes you're stuck in a job that doesn't make sense. Refactoring code from ages ago, the stack is miles away from what it's supposed to be. If you love a good challenge, enjoy solving meaningful problems, and want to be a part of one of the fastest-growing AI startups in the Silicon Valley — then Arena is the company you're looking for. The challenges: Real-time messaging infrastructure supporting 100,000 concurrent users per customer application; High performance systems with API responses in the 10ms range; Highly scalable architecture using auto-scaling policies, distributed systems and container orchestration; High availability infrastructure powering homepages of some of the most visited websites and apps on the internet; Managing distributed databases for our Data Platform storing every user engagement; Building infrastructure that enables product teams to ship fast with reliability and observability. Our Stack: AWS; DigitalOcean; Terraform; Docker; GitHub & GitHub Actions; Node; React; TypeScript; Vercel; Datadog; CloudWatch; Kong API Gateway; Cloudflare; Varnish. Work Experience: 3–5 years of relevant DevOps / Infrastructure / SRE experience. Must-Have Experience: AWS infrastructure experience with: ECS (Fargate); Lambda; RDS (PostgreSQL); DocumentDB (MongoDB compatible); S3; CloudFront; API Gateway; WAF; SES; IAM; VPC networking. Infrastructure as Code using Terraform ; CI/CD pipelines using GitHub Actions (or similar); Containerization using Docker and container orchestration with ECS ; Strong networking fundamentals: load balancers, DNS, VPNs, firewalls, CDNs ; Monitoring and observability using Datadog, CloudWatch, Prometheus or similar ; Database operations with MongoDB/DocumentDB and PostgreSQL ; Fluent written and spoken English. Nice-to-Have Experience: Kong API Gateway or other gateway technologies (NGINX, Envoy); DigitalOcean infrastructure; Varnish cache configuration and CDN optimization; FinOps and cloud cost optimization; Cloudflare DNS/CDN management; Serverless frameworks for Lambda deployments; OpenVPN configuration and administration; Experience with high-scale systems (1M+ concurrent connections). Example Projects You’ll Be Working on: Build fully redundant production environment with automated switchover capabilities; Build fully automated CI/CD pipeline; Build fully automated production scaling system; Build fully automated monitoring and early-warning systems; Implement SOC 2 / ISO 27001 compliance; Monitor and maintain systems security and data privacy. We also have some sweet