Cloud Engineer

Arena

Cloud Engineer responsible for real-time messaging infrastructure supporting multiple clients in AI startup. Collaborate within a global team, enhancing systems reliability and performance for millions of users.

Posted 5/22/2026full-timeRemote • 🇧🇷 BrazilMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSDistributed SystemsDNSDockerFirewallsMongoDBPostgresPrometheusTerraform

About the role

Key responsibilities & impact

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.

Requirements

What you’ll need

3–5 years of relevant DevOps / Infrastructure / SRE 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.

Benefits

Comp & perks

🔥 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

ATS Keywords

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Hard Skills & Tools

DevOpsInfrastructureSREAWSTerraformCI/CDContainerizationNetworking fundamentalsDatabase operationsMonitoring and observability

Soft Skills

Fluent written and spoken English