Senior Full-Stack Software Engineer, Applied AI

• Develop full-stack AI applications, including front-end components (ReactJS) and back-end services (Ruby on Rails), shipping projects end-to-end.
• Design and execute experiments, such as A/B tests and AI evaluations, to validate features, measure impact, and guide iterative improvements.
• Build and maintain infrastructure for AI inference, ensuring performance, reliability, and scalability.
• Collaborate with product, design, and leadership teams to shape features and drive innovation.
• Continuously improve processes, tools, and systems to accelerate AI feature deployment.
• Stay current with emerging AI research, tools, and technologies, applying relevant advancements to production use cases.
• Maintain high standards of code quality, user experience, and operational reliability.

Requirements:6+ years of experience as a full-stack engineer on high-traffic, production applications.Proficiency with Ruby on Rails, ReactJS, and relational databases (MySQL/PostgreSQL).Hands-on experience developing AI features in production (e.g., LLM-powered tools, RAG systems, AI agents).Strong experimentation mindset: designing, running, and iterating on tests to validate feature impact.Ability to work in a fast-paced environment with autonomy, personal accountability, and collaboration across teams.Comfortable learning new technologies quickly and navigating ambiguity.Strong alignment with organizational values.Proficient in English (CEFR Level C2 / ILR Level 5).Benefits:Competitive salary: $130,000 - $140,000 USD per year, with annual review and equity options.Fully remote: work from anywhere in the world.High autonomy and trust in executing your work.Generous paid time off: 35 days annually, plus paid sabbatical after 5 years.Comprehensive medical coverage or reimbursement

$130,000 - $140,000 Vollzeit HOME-OFFICE