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LoadUp Logo LoadUp · IT - Software Development

Senior Software Engineer (Ruby)

United States 130000.00 - 150000.00 USD / Year · Job Posted January 18, 2026
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Job Description

A Senior Ruby on Rails Engineer role at LoadUp where you’ll lead scalable architecture, mentor engineers, and help shape a high-growth, mission-driven logistics platform.

Job Responsibility

  • Design, build, and maintain scalable, high-performance web applications using Ruby on Rails
  • Lead technical design discussions and contribute to architectural decisions
  • Collaborate with Product, UX, and QA teams to deliver impactful product features
  • Build and maintain frontend functionality using React, Stimulus, Turbo, and TypeScript
  • Optimize client-side and server-side performance, including database queries, memory usage, and HTTP requests
  • Develop and maintain APIs, background jobs, and third-party integrations using GraphQL, Redis, and Sidekiq Pro
  • Mentor junior and mid-level engineers through thoughtful code reviews and technical guidance
  • Participate in agile development processes and adapt to evolving product requirements

Requirements

  • 5+ years of experience building web applications using Ruby on Rails
  • 5+ years of experience working with SQL databases, ideally PostgreSQL or RDS
  • 5+ years working within a product organization alongside Product Managers, QA, and UX teams
  • 5+ years of frontend development experience using JavaScript and TypeScript
  • 5+ years of experience building responsive web applications with HTML and CSS
  • 3+ years of experience translating wireframes into clean, semantic, and performant UI
  • Strong understanding of performance optimization across frontend and backend systems
  • Experience with server-side rendered Rails views (HTML/ERB) and page-mounted React components
  • Ability to design scalable frontend architectures with attention to performance and memory management
  • Hands-on experience with cloud platforms such as Heroku, AWS, or Azure
  • Proficiency with Git and GitHub-based workflows
  • Strong communication skills and the ability to learn and adapt quickly
  • Experience mentoring engineers and supporting team growth
  • Proactive, strategic mindset with strong interpersonal skills
  • Comfortable working within agile product development teams

Nice to have

  • Experience integrating with payment APIs such as Stripe, Ruby Pay, or Braintree
  • Leadership aspirations with a passion for mentoring and technical excellence
  • Experience scaling and operating production cloud-based systems
  • Bachelor’s degree in Computer Science or equivalent practical experience preferred

What we offer

  • Comprehensive Health & Wellness Benefits – Medical, Dental, Vision, and Life Insurance
  • Flexible Spending & Savings Options – FSA and HSA plans for personalized healthcare planning
  • 401(k) with 5% Company Match
  • Employee Recognition Program
  • Monthly Lifestyle Stipends
  • Referral Rewards Program
  • PTO, Sick Days & Parental Leave
  • Growth & Development
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