Senior Backend Engineer (TypeScript + NestJS)

Description

Summary: Join a senior, high-impact engineering team to design and implement scalable backend solutions for a data-heavy analytics platform, focusing on data pipelines and APIs. Highlights: 1. Work on a data-heavy analytics platform trusted by major companies 2. Focus on data pipelines, APIs, and production systems in an AI-forward team 3. Collaborate on scalable backend solutions and mentor junior developers Join 99x Brazil as a Senior Backend Engineer and work with a US\-based, venture\-funded startup building a data\-heavy analytics platform for CHROs, trusted by companies like Uber, Figma, and DoorDash. You’ll be part of a senior, high\-impact engineering team delivering solutions used across North America and Europe. This is a strictly backend role focused on data pipelines, APIs, and production systems. You’ll build new features, debug complex issues, and work directly with production logs in a fast\-moving environment. The team is AI\-forward and values engineers who actively leverage modern AI coding tools to move faster and write better software. ### **Responsibilities** * Design and implement scalable backend solutions using modern technologies. * Optimize existing applications for maximum speed, scalability, and reliability. * Collaborate with front\-end developers and designers to integrate APIs and ensure seamless user experiences. * Troubleshoot and resolve backend\-related issues efficiently. * Conduct code reviews and provide mentorship to junior developers. * Stay updated with industry trends and best practices in backend development. **Requirements** * Bachelor's degree in Computer Science or a related field. * 5\+ years of experience in backend development * Must\-have: Strong TypeScript and NestJS. * Data proficiency: Strong SQL skills and experience with Snowflake (understanding data models/querying). * Debugging skills: Comfortable working with production logs to solve real customer issues. * AI\-Enabled: Experience with Claude Code or similar AI coding tools is considered super valuable by the client. * Nice to have: AWS, Terraform, Kubernetes experience. **Benefits** * Your pick when it comes to employment models: CLT/PJ/Cooperativa; * We provide resources for you to grow and learn on the job, including online courses, mentoring, and the latest gen laptops; * A fully remote work environment with flexible working hours; * Bonus for any referrals that we end up hiring.