Backend Engineer [Brazil]

What you will be doing:

Our team is made up of very experienced engineers, some with more than 10 years of experience. You will have an enormous impact on making our app and API service faster, more scalable and more flexible. You will add new features to the service and find ways to make the existing ones perform orders of magnitude faster.

The challenges:

• Real-time messaging to support 100,000 concurrent users per customer application;
• High performance: our API responses are in the 10ms range;
• High scalability: we use sharding, master-master, and master-slave to ensure scalability;
• High availability: our code is running on homepages of the most visited websites and apps on the internet;
• Distributed databases for our Data Platform storing every user engagement.

Our Stack:

• Node.js, TypeScript;
• Go Lang;
• Apollo GraphQL;
• AWS Lambda/Serverless framework;
• AWS (API Gateway, S3, VPC, IAM, Fargate, EC2, ALB, CloudFront, Kinesis, SQS, CloudWatch);
• Google Firestore/Firebase;
• MongoDB, PostgreSQL, DynamoDB;
• Redis;
• Websocket;
• Cloudflare;
• Unit test.

 Work Experience:

• 2-3 years of relevant backend programming experience.

Must-Have Experience:

• TypeScript;
• Node.js;
• TDD, BDD, or ATDD;
• REST APIs;
• MongoDB, AWS DocumentDB, or other document database;
• Fluent in written and spoken English.

Nice-to-Have Experience:

• Experience with statically typed languages (e.g. Java, C#, Go);
• Object-oriented and functional programming;
• Go Lang;
• AWS;
• SQL;
• React.

Example Projects You’ll Be Working on:

• Integrate systems with data sources and clients;
• Build internal tools for staff and other developers;
• Build complex business rules orchestrations;
• Build a real-time chat that can scale to 1M simultaneous users;