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Senior Software Engineer, Core

Fleetio

Salary not specified
Aug 20, 2025
Remote, US
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Fleetio is looking for a Senior Software Engineer to build and scale backend systems and frameworks that power solutions across their product verticals, ensuring reliability and maintainability.

Requirements

  • 5+ years of experience with Ruby on Rails, with deep expertise in backend architecture and design patterns.
  • Experience with React and TypeScript, capable of contributing to full stack solutions.
  • Proven ability to ship and iterate quickly, moving fast while maintaining high technical quality.
  • Strong understanding of object-oriented programming and relational databases (PostgreSQL preferred).
  • Experience designing scalable, observable, and well-documented systems.
  • Experience with unit testing frameworks
  • Experience with ElasticSearch or similar search index frameworks.

Responsibilities

  • Design and evolve mission-critical backend systems and frameworks that power features across Fleetio’s product verticals.
  • Collaborate with Product Managers, Designers, and Engineers in a highly async environment to consistently deliver high-quality software.
  • Build systems that are scalable, observable, and well documented, setting patterns and communicating best practices for the broader engineering org.
  • Mentor and support engineers through code reviews, async discussions, and technical guidance, raising the bar for engineering quality.
  • Take part in planning, designing, and implementing solutions for our Core framework products.
  • Lead the design and architecture of new frameworks, ensuring reliability, maintainability, and long-term scalability.
  • Engage in collaborative design and architecture of features.

Other

  • Self-driven and impact-oriented
  • Thrives on collaborating in an async environment
  • Clear, intentional communication skills with a track record of thriving in a highly async environment.
  • Bring initiative, hunger for impact, and help your team grow through mentorship and collaboration.
  • Be sure to mention "coffee" in your application, so we know you read this