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Cloud Engineer at Arena.im. . Location: Brazil - Remote.  . . 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 perks like:. . 🔥 Be a part of the team in Silicon Valley and join a global team. . 💪 A team of exceptional engineers leading the cutting-edge AI Agents.. . 💶 Competitive salary package & benefits. . ⛱️ 4 weeks of paid time-off. . 📖 Learning and Development budget. . 🚀 Key moment to join Arena in terms of growth and opportunities. . 💻 Ability to put your stamp on real-world AI applications that serve millions of users.. . 📚 Fast-learning environment, entrepreneurial and strong team spirit. . 🌍 Multiple nationalities: cosmopolite & multi-cultural mindset. . 💆‍♀️ Our people matter, work-life balance is important at Arena. .