Backend Engineer – Python, AWS & GenAI

Accountabilities: Design, build, and maintain scalable backend systems using Python and frameworks such as FastAPI, Flask, or Django. Develop backend services supporting document retrieval, processing pipelines, and AI/GenAI workflows. Design and implement reliable APIs that integrate AI models, vector databases, embedding services, and other internal or external systems. Build reusable Python components and services that integrate effectively with AWS infrastructure. Develop and maintain containerized applications using Docker and modern deployment practices. Implement asynchronous processing and distributed system components to support scalable and reliable backend operations. Build and maintain logging, metrics, tracing, and internal monitoring tools to track system performance and reliability. Write clean, maintainable, testable, and reusable code, ensuring clear separation between business logic and infrastructure. Contribute to backend architecture, technical design, and engineering decisions. Take end-to-end ownership of backend systems, including development, deployment, monitoring, optimization, and long-term maintenance. Identify and resolve complex technical issues while continuously improving system performance, scalability, and reliability. Requirements: 4–8 years of professional experience in software engineering, with strong hands-on expertise in Python backend development. Practical experience with Python backend frameworks such as FastAPI, Flask, or Django. Proven ability to design and develop scalable APIs and backend services. Exposure to AI/ML or Generative AI applications, including model integrations, vector databases, embeddings, or document-processing systems. Hands-on experience working with AWS services and cloud-based infrastructure. Experience using Docker and modern deployment pipelines. Familiarity with distributed systems, asynchronous processing, and service-to-service communication. Understanding of functional programming concepts and maintainable software design principles. Ability to write clean, reusable, and testable code. Strong analytical and problem-solving skills, with the ability to work independently and take ownership of technical challenges. Professional-level English communication skills. Applicants must currently be based in Brazil. Benefits: Full-time, long-term contractor engagement. 100% remote working arrangement within Brazil. Opportunity to build advanced backend systems supporting AI and GenAI products. Ownership of technically challenging projects with meaningful enterprise impact. Collaboration with an international team of skilled professionals. Fast-paced environment that encourages innovation, autonomy, and continuous professional growth.