Cloud Engineer

NEPSE Trading; Brasil; Remote; BRL 150,000 - 270,000; Full time

Benefits offered by this job

Be part of the team in Silicon Valley

Competitive salary package & benefits

4 weeks of paid time-off

Learning and Development budget

Fast-learning environment, ambitious团队

Job summary

Arena is a fast-growing AI startup with a Silicon Valley origin and global reach. We are building scalable real-time infrastructure for agent AI, serving millions of users across multiple countries. Join a team that values autonomy, ownership, and continuous learning.

We seek a DevOps/SRE engineer with 3–5 years of experience in AWS, ECS/Fargate, serverless, IaC, and observability to help us scale high-availability systems and deliver reliable performance.

Qualifications

• 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
• Containerization using Docker and container orchestration with ECS
• Strong networking fundamentals: load balancers, DNS, VPNs, firewalls, CDNs
• Monitoring and observability using Datadog, CloudWatch, Prometheus
• Database operations with MongoDB/DocumentDB and PostgreSQL
• Fluent written and spoken English

Responsibilities

• 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

Skills

AWS infrastructure

ECS (Fargate)

Lambda

PostgreSQL

DocumentDB

S3

CloudFront

API Gateway

WAF

SES

IAM

VPC networking

Terraform

CI/CD with GitHub Actions

Docker

Observability/Monitoring

MongoDB

English proficiency

Tools

Terraform

Docker

GitHub Actions

CloudWatch

Datadog

Kong API Gateway

Job description

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

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