Full-Stack Application Developer Brazil

Description Onebeat is a fast-growing retail technology company helping some of the world's leading retailers make smarter inventory decisions using AI and advanced optimization. Our platform enables retailers to optimize replenishment, allocation, inventory balancing, and store operations—improving product availability while reducing excess inventory. Joining Onebeat means building software that solves real-world retail challenges at scale. Every feature you develop has a direct impact on global customers and millions of inventory decisions every day.

We're looking for a Full-Stack Application Developer to join one of our product teams and own features from technical design through production.

This is an opportunity for an engineer who enjoys building high-quality software, solving complex technical problems, and working across both frontend and backend technologies.

You don't need to be an expert in every technology we use. If you're strong in React, Node.js, PostgreSQL, and AWS , and excited to expand into modern data technologies like Apache Spark and ClickHouse , we'll support your growth. We also embrace AI-powered development tools to help engineers work faster while maintaining high engineering standards.

Please note that we will only review CVs submitted in English.

We are looking for candidates who are based in Recife or São Paulo, or who are willing to relocate to one of these locations.

What You Will Do

• Own product features end-to-end—from design and development to deployment and production support.
• Build scalable frontend and backend applications.
• Enhance and maintain a mature production platform while balancing speed, quality, and maintainability.
• Write secure, clean, and well-tested code.
• Build automated tests and continuously improve software quality.
• Use AI development tools to accelerate implementation, debugging, testing, and code exploration.
• Investigate and resolve production issues.
• Participate in code reviews and Agile ceremonies.
• Collaborate closely with Product, Data Engineering, DevOps, Customer Success, and global Engineering teams.

Requirements Required Qualifications

• 3+ years of professional Full-Stack development experience.
• Strong hands-on experience with:
• React
• Node.js
• PostgreSQL
• AWS
• Experience building and maintaining production applications.
• Solid understanding of frontend, backend, and API design.
• Comfortable working in cloud environments.
• Familiarity with DevOps practices such as CI/CD, monitoring, logging, and troubleshooting.
• Experience using AI coding assistants in day-to-day development.
• Strong problem-solving skills and ability to work independently.
• Excellent written and spoken English.

Nice to Have

• Experience with Apache Spark or ClickHouse.
• Exposure to data pipelines or distributed systems.
• Experience working in SaaS or product companies.
• Background in Retail, Supply Chain, Inventory Optimization, or other data-intensive B2B platforms.
• Startup experience.

Why Join Onebeat?

• Work on an AI-powered SaaS platform used by global retailers.
• Own features from idea to production.
• Collaborate with talented engineers in an international environment.
• Learn modern data engineering technologies.
• Enjoy a high level of ownership and autonomy.
• Help shape products that solve real business challenges at scale.