Nextmark

Staff Ruby Engineer

Contractor · Remote · 50 openings

In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.

Key Responsibilities

  • Design and architect scalable, maintainable systems using Ruby and Ruby on Rails
  • Develop and optimize database schemas and queries for performance and reliability
  • Lead API design and implementation, ensuring robust service-oriented architecture
  • Mentor and guide engineers, fostering a culture of code quality and technical growth
  • Analyze application bottlenecks and drive solutions for enhanced performance
  • Establish and enforce coding standards, best practices, and design principles
  • Collaborate with cross-functional teams to translate business needs into technical solutions

Required Skills & Qualifications

  • Expert-level proficiency in Ruby and Ruby on Rails
  • Proven experience in system design and architecture for large-scale applications
  • Strong background in database modeling, optimization, and management
  • Demonstrated ability in performance profiling and tuning of web applications
  • Extensive hands-on experience with API design and service-oriented systems
  • Track record of providing mentorship and technical leadership within engineering teams
  • Commitment to high code quality, automated testing, and best software practices

Preferred Qualifications

  • Experience leading complex projects or initiatives in dynamic environments
  • Background in scaling distributed systems and microservices architecture
  • Familiarity with modern DevOps practices and cloud platforms

$30–$80/hr

Remote