Back end Engineer [Brazil]

Arena.im; Brasil; Presencial; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

Arena.im, a leading AI startup, seeks a backend developer to enhance app performance and develop AI features. Join a team of experienced engineers tackling challenges in a supportive work environment with growth opportunities, competitive salary, and a global reach.

Serviços

Competitive salary and benefits

4 weeks paid time off

Learning and development budget

Growth opportunities in a fast-expanding company

Supportive work environment emphasizing work-life balance

Qualificações

• Minimum 3 years as a backend developer.
• Experience with high-traffic, high-performance applications.
• Curious and experimental with AI and AI agents daily.

Responsabilidades

• Enhance app and API's speed, scalability, and flexibility.
• Develop real-time messaging support for 500,000 concurrent users.
• Design and build AI Agents and optimize existing features.

Conhecimentos

TypeScript

Node.js

TDD

REST APIs

MongoDB

Descrição da oferta de emprego

Join Arena - A Leading AI Startup in Silicon Valley

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 over 2,000 customers in 150 countries and more than 50 million users engaging with our Agent AI monthly.

If you're passionate about solving meaningful problems, enjoy challenging code refactoring, and want to be part of a rapidly growing AI startup, Arena offers an exciting opportunity.

What You Will Be Doing:

Work with a team of experienced engineers to enhance our app and API's speed, scalability, and flexibility. Collaborate with product and engineering teams to develop AI-powered features and optimize existing ones.

The Challenges:

• Develop real-time messaging support for 500,000 concurrent users per application
• Ensure API responses are within 10ms
• Design and build AI Agents, RAG pipelines, model fine-tuning, and crawling systems
• Implement sharding, master-master, and master-slave architectures for scalability
• Maintain high availability for systems on popular websites and apps

Our Tech Stack:

• Node.js, TypeScript
• Golang
• WebSocket
• AWS Lambda/Serverless
• AWS services (API Gateway, S3, VPC, IAM, Fargate, EC2, ALB, CloudFront, Kinesis, SQS, CloudWatch)
• Google Firestore/Firebase
• Redis
• Cloudflare
• Unit testing

Work Experience:

• Minimum 3 years as a backend developer
• Experience with high-traffic, high-performance applications
• Curious and experimental with AI and AI agents daily

Must-Have Skills:

• TypeScript
• Node.js
• TDD, BDD, or ATDD
• REST APIs
• MongoDB, AWS DocumentDB, or similar

Nice-to-Have Skills:

• Experience with Java, C#, Go
• Object-oriented and functional programming
• AWS expertise
• SQL knowledge
• React

Example Projects:

• Build scalable real-time chat for 1 million users
• Design and optimize AI agent architectures, RAG pipelines, and LLM systems
• Integrate with data sources handling millions of data points
• Create complex business rules similar to Reddit, Discord, WhatsApp

Perks:

• Be part of a Silicon Valley team with a global reach
• Work with leading AI engineers
• Competitive salary and benefits
• 4 weeks paid time off
• Learning and development budget
• Growth opportunities in a fast-expanding company
• Impact real-world AI applications serving millions
• Supportive work environment emphasizing work-life balance

About Arena:

Backed by top-tier investors like CRV, Redpoint, and Craft Ventures, Arena offers a unique work culture emphasizing ownership, autonomy, and growth across multiple countries.

Apply Now:

Fill out the required fields to join our innovative team and shape the future of AI.