99x Brazil (formerly Nextly)

Role Description 99x Brazil is seeking an Intermediate Python Developer to join our team focused on building AI-powered SaaS applications. In this role, you will collaborate with cross-functional teams to design, develop, and maintain scalable backend services that support cutting-edge AI features. You will work closely with data scientists, product managers, and frontend developers to deliver seamless AI experiences to our users. Our client operates multiple AI SaaS businesses and is growing rapidly. We are looking for developers who want to work in a fast-paced environment focused on building and scaling AI-powered products. You will be trained in their internal development processes, AI-assisted workflows, and modern development practices using tools like Cursor and AI copilots to build faster while maintaining high engineering standards. - Build and maintain AI SaaS products - Develop backend services and APIs using Python - Work on web applications and internal tools - Collaborate on feature development and product improvements - Use AI-assisted development tools to improve productivity and workflows - Participate in rapid development and deployment cycles Qualifications - Advanced English proficiency - 2-4 years of professional Python development experience - Familiarity with AI/ML concepts and frameworks (e.g., TensorFlow, PyTorch) is a plus - Experience building and consuming RESTful APIs - Knowledge of cloud platforms such as AWS, Azure, or Google Cloud - Understanding of SaaS architecture and microservices is preferred - Strong problem-solving skills and attention to detail - Good communication skills and ability to work in a collaborative team environment - Proactive attitude and eagerness to learn new technologies - Experience working with our tech stack: AWS, Flask, PostgreSQL, HTML, JavaScript, React, Node.js, Next.js 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 Company Description

Role Description We are seeking a skilled AI/MLOps Engineer to join the innovative team at 99x Brazil. In this role, you will be responsible for designing, deploying, and maintaining scalable machine learning infrastructure and pipelines that enable rapid development and reliable deployment of AI models. You will work closely with data scientists, engineers, and product managers to ensure seamless integration of AI capabilities into production systems. You will play a crucial part in automating ML workflows, monitoring model performance, and optimizing resource utilization in cloud environments. Join us to help drive the future of AI-powered solutions in a fast-paced, collaborative environment. Responsibilities - Design and maintain monitoring and observability solutions for AI applications and ML pipelines - Track logs, metrics, and traces using tools such as CloudWatch, Datadog, or similar platforms - Develop evaluation and testing frameworks for prompts, models, and AI workflows - Perform regression testing and quality validation for LLM-based systems - Manage prompt experimentation, versioning, and A/B testing processes - Debug AI workflows, including model outputs, orchestration pipelines, and infrastructure failures - Support deployment, scaling, and maintenance of AI/ML infrastructure in production environments - Collaborate with engineering and product teams to improve system reliability and performance - Analyze production data and user feedback to drive continuous improvement of AI systems - Contribute to operational best practices, documentation, and incident response processes Qualifications - Experience with DevOps, SRE, MLOps, or AI infrastructure engineering - Strong understanding of monitoring and observability concepts - Hands-on experience with tools such as Datadog, CloudWatch, Grafana, Prometheus, or similar - Experience supporting AI/ML or LLM-based applications in production - Familiarity with prompt engineering, model evaluation, and experimentation workflows - Knowledge of cloud platforms such as AWS, Azure, or Google Cloud - Experience troubleshooting distributed systems and production pipelines - Proficiency in Python, scripting, or automation tooling - Strong analytical and problem-solving skills - Excellent communication and collaboration abilities Nice to Have - Experience with LLM orchestration frameworks - Familiarity with vector databases and RAG architectures - Experience with CI/CD pipelines for ML systems - Knowledge of Kubernetes, Docker, and infrastructure-as-code tools - Experience with AI governance, security, or compliance practices 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

Role Description 99x Brazil is seeking a Senior Full-Stack Engineer with expertise in Angular and Node.js to join our innovative and AI-native development team. As part of a dynamic and collaborative environment, you will play a key role in building and evolving scalable web applications that leverage artificial intelligence to deliver exceptional user experiences. In this role, you will work closely with product managers, designers, and other engineers to implement new features, optimize existing codebases, and drive technical excellence. We value a startup mindset and the ability to navigate ambiguity while delivering high-quality software solutions. - Design, develop, and maintain full-stack web applications using Angular and Node.js. - Integrate AI-powered features and workflows to enhance product capabilities. - Collaborate with cross-functional teams to define requirements and deliver solutions. - Ensure code quality through testing, code reviews, and adherence to best practices. - Optimize application performance, scalability, and security. - Continuously research and implement emerging technologies and AI tools to improve development processes. - Mentor junior engineers and contribute to a culture of learning and innovation. Qualifications - Advanced English skills - 5+ years of experience in Angular and Node.js development - Strong proficiency in TypeScript, HTML, and CSS - You ship end-to-end. You own a feature from problem definition to production, with AI as a core tool in your workflow. - Generalist by instinct. You’ve worked across the stack or shown you can. Depth in one area, genuine curiosity about all of them. - First-principles thinker. You frame the right problem before writing a line of code, and you push back when the brief is wrong. - AI-native. You don’t use AI tools occasionally. They’re built into how you work. You can describe exactly how. - Production ownership. You don’t consider something done when it merges. You monitor, iterate, and stay accountable. 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.