Senior Backend Developer (Ruby on Rails)

About the Role We are looking for a Senior Ruby on Rails Developer (Backend Focus) to join a talented international team and contribute to the development of a scalable platform that connects families with educational providers. This is a direct hire opportunity with the client’s payroll, offering long-term stability and professional growth. Responsibilities • Design, develop, and maintain scalable backend solutions with Ruby on Rails. • Solve complex technical challenges related to performance, concurrency, and distributed architecture. • Lead technical initiatives and mentor other team members. • Collaborate with cross-functional teams (Product, Frontend, DevOps) in an Agile environment. • Participate in architectural decisions and support the migration of infrastructure to AWS. • Contribute to improving scalability, reliability, and performance of the platform. Requirements • Proven experience with Ruby on Rails in main projects in recent years (not only side projects). • Strong track record building and scaling large, complex products (high concurrency, millions of users, critical integrations). • Expertise in performance optimization, architecture design, and scalability. • Experience leading projects or technical teams in e-commerce, marketplaces, or large-scale digital platforms. • General frontend knowledge (React, HTML, CSS, JavaScript) is a plus. • Advanced English (C1 or higher, mandatory): you will work closely with international stakeholders. • Current residence in Argentina (mandatory). Tech Stack • Languages: Ruby, JavaScript, HTML, CSS • Frameworks: Ruby on Rails, React (in some areas of the project) • Database: PostgreSQL • Infrastructure: Active migration to AWS • Methodology: Agile Benefits • Competitive compensation: USD 5,000 – 6,000/month (on client’s payroll) 100% remote work, with occasional visits to the client’s office in Argentina • Direct and stable employment with the client • Opportunity to work with international stakeholders and high-level engineering teams • Involvement in complex projects with continuous learning opportunities Selection Process • Interview with Workana • Interview with People (Client) • Technical interview with the Team Lead (based in Silicon Valley) • Two final interviews with the client (one technical, one cultural) Apply now and join a global team building impactful platforms. • Location: Argentina (mandatory) • Modality: Full-time, direct hire on the client’s payroll • Company: Software company based in Pilar, Buenos Aires, providing services to global clients • Industry: Edtech / Marketplace for educational activities