CallRail is seeking a Senior Backend Engineer to join their Integrations Team, focusing on a core product that integrates with major business partners like Google Ads, Salesforce, and HubSpot. The role combines technical expertise in Ruby on Rails with system design and leadership responsibilities. As a senior engineer, you'll be instrumental in building and maintaining integrations while mentoring team members and driving technical decisions. The position offers a collaborative environment with modern tech stack including Ruby, Rails, Angular, and various databases. CallRail provides comprehensive benefits including fully-covered healthcare options, equity from day one, and flexible work arrangements. The company values diversity and maintains an inclusive culture where all team members can thrive and grow. This role is perfect for experienced backend developers who enjoy working on integration challenges while contributing to a supportive team environment.