Senior Ruby on Rails Engineer, AI

At ioet , a leading software company with a talented team across LATAM, we provide Software Engineering as a service to clients worldwide. Join us for exciting professional challenges, working on projects ranging from innovative startups to globally recognized brands. Our positions are full-time, remote, and offer competitive compensation in USD. We are looking for an experienced Senior Ruby on Rails Engineer who is eager to grow professionally within our dynamic and highly skilled software development team. In this role, you will help build the next generation of AI-powered capabilities within a mature software platform, combining strong backend engineering with practical experience designing and shipping production-ready AI solutions. You will work across a Ruby on Rails backend and modern React applications, building scalable product features while leading the adoption of AI-powered workflows. This role is ideal for an engineer who is equally comfortable debugging a large Rails application, integrating LLM-powered features, and helping the engineering team adopt modern AI development practices. Requirements: 5+ years of professional experience developing applications with Ruby on Rails . Experience working in large, production-grade Rails applications or monolithic architectures. Hands-on experience designing and shipping LLM-powered features in production. Experience building retrieval-based systems, AI workflows, or structured LLM integrations . Experience evaluating AI systems and measuring model quality through testing or evaluation frameworks. Strong understanding of Ruby , JavaScript , and modern software engineering best practices. Working knowledge of React to develop, test, and troubleshoot frontend features. Experience integrating with third-party APIs and external services. Strong debugging, problem-solving, and architectural decision-making skills. Experience working collaboratively through code reviews, technical discussions, and Agile development practices. Strong English communication skills – Minimum B2 level proficiency . Send your application and CV in English (mandatory). Based in Latin America . Nice to Have: Experience designing AI agents capable of interacting with business systems or automating workflows. Experience implementing Retrieval-Augmented Generation (RAG) architectures. Familiarity with vector databases , semantic search, or embedding-based retrieval systems. Experience building AI evaluation pipelines and observability for LLM applications. Experience with Heroku , Vercel , or similar cloud deployment platforms. Experience mentoring engineers and promoting AI best practices across development teams. Benefits: Remote work Flexible schedule Collaboration with international clients USD compensation Paid Holidays and Vacations Paid family and sick leaves English classes Educational and wellness bonus Structured career plan with regular salary reviews Emphasis on personal growth and mentorship Are you ready to be part of the ioet journey? Get your CV in English and Apply Now. If you are curious to know more about our culture, technologies, and blogs, visit www.ioet.com