Senior Software Engineer, Integrations

Fleetio is a modern software platform that helps organizations manage their fleet operations. They are seeking a Senior Software Engineer to join their Integrations team, where the role involves delivering reliable solutions and improving usability across the product while working with both frontend and backend systems.

Responsibilities:

• Collaborate closely with Product Managers, Designers, and Engineers to deliver high-quality solutions for Integration Partners
• Build and evolve partner-facing user experiences with a focus on clarity, usability, and design consistency
• Develop and maintain backend functionality that supports integrations, workflows, and data processing
• Help design and implement new integrations with external partner systems and data sources
• Work with complex and high-volume data to ensure reliability, performance, and accuracy
• Contribute to technical and architectural decisions within the Integrations team
• Deliver well-tested, maintainable, and performant code across the stack
• Provide thoughtful code reviews and mentorship to help raise the quality and consistency of the team’s work
• Participate actively in planning, discovery, and iterative improvement of features

Requirements:

• 5+ years of professional experience building production software with Ruby on Rails
• 2+ years of experience building modern, user-focused web applications with React and TypeScript
• Strong understanding of frontend best practices, including component architecture, state management, and performance considerations
• Experience working closely with designers and translating designs into polished, accessible user interfaces
• Experience building and consuming APIs and working with external integrations
• Comfort working with data-intensive systems and complex business logic
• Experience writing unit, integration, and UI tests
• Familiarity with relational databases (PostgreSQL preferred)
• Strong written and verbal communication skills
• Experience improving or contributing to shared design systems or UI component libraries
• Background working on partner-facing or B2B SaaS products
• Experience with background processing, asynchronous workflows, or event-driven systems