Back End Developer (AI Infrastructure)

About The Role What if the code you write could directly power the AI systems shaping how millions of people interact with technology? We're looking for Back End Developers in São Paulo to design, build, and optimize the server-side systems and APIs that drive cutting-edge AI products — from data pipelines and model-serving infrastructure to scalable microservices that handle real-world traffic at scale. This is a fully remote, flexible contract role. Whether you're a seasoned engineer looking for meaningful project work or a strong developer ready to apply your skills to AI-adjacent infrastructure, this is your chance to build things that matter. Organization: Alignerr
Type: Hourly Contract
Location: Remote
Commitment: 10–40 hours/week What You'll Do Design, develop, and maintain robust back end services, APIs, and data pipelines
Build scalable, high-performance server-side architecture to support AI training and inference workloads
Write clean, well-documented, and tes...