Principal Full Stack Engineer (Ruby + React) - Remote - Latin America

• *About FullStack**

FullStack is the most transparent IT talent network, connecting highly skilled individuals with top global companies and Silicon Valley startups for remote, on-demand projects. We focus on building a trusted, high-performance network where talent can thrive in a positive, respectful, and supportive environment. By prioritizing transparency, fair opportunities, and professional growth, we empower our engineers to deliver their best work while collaborating with innovative teams worldwide.

• *We’re Most Proud Of
• Offering life-changing opportunities for talented software professionals across the Americas.
• Enhancing highly-skilled software development teams of hundreds of the world’s greatest companies.
• Our 4.2-star rating on GlassDoor.
• Our client Net Promoter Score of 68, twice the industry average.
• *The Opportunity

Join our talent network and connect with U.S. clients for flexible, project-based development work as a Principal Full Stack Engineer

• You will integrate directly into our client's team and work alongside their existing designers and engineers on a daily basis.
• *What We're Looking For
• 10+ years of professional Full Stack engineering experience.
• Advanced English is required.
• Successful completion of a four-year college degree is required.
• Strong experience building backend systems using Ruby on Rails.
• Strong experience building modern frontend applications with React.
• Experience designing and implementing RESTful APIs and scalable web services.
• Solid understanding of software architecture, system design, and distributed systems.
• Experience working with relational databases such as PostgreSQL or MySQL.
• Experience building production-grade applications with strong performance and reliability requirements.
• Experience mentoring engineers and guiding technical decision-making across teams.
• Strong understanding of testing practices, code quality, and maintainable system design.
• Familiarity with cloud platforms such as AWS, GCP, or Azure.
• Experience with Elixir is a plus, or willingness to learn and apply it in production systems.
• Ability to work through new and difficult issues and contribute to libraries as needed.
• Ability to create and maintain continuous integration and delivery of applications.
• Forensic attention to detail.
• A positive mindset and a can-do attitude.
• Experience working on Agile / Scrum teams.
• Meaningful experience working on large, complex systems.
• Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon.
• Ability to identify with the goals of FullStack's clients, and dedicate yourself to delivering on the commitments you and your team make to them.
• Ability to consistently work 40 hours per week.
• *Nice To Have

We’re Seeking Engineers Who Are AI-enthusiastic In Their Workflow. Professional Experience Or Personal Project Work With The Following Is a Significant Plus

• Cursor, Windsurf, or Google Antigravity.
• Claude Code, Gemini CLI, Codex, or Copilot CLI.
• *What We Offer**
• Competitive pay.
• 100% remote work.
• The ability to work with leading startups and Fortune 500 companies.
• Continuing education opportunities.
• Opportunity to grow and expand your career.

Our talent network is committed to fostering a diverse, inclusive, and accessible environment where IT professionals can find opportunities that match their skills. We welcome individuals of all races, religions, genders, sexual orientations, national origins, abilities, and experiences. Our focus is on connecting talent with projects based on qualifications, ensuring a fair and transparent process that values diverse perspectives and global collaboration.

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