Software Engineer, Ruby on Rails

🕒 November 11, 2025

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Mudflap

WebsiteLinkedInAll Job Openings

11 - 50 employees

🚗 Transport

💸 Finance

🤝 B2B

💰 Pre Seed Round on 2018-11

Transport • Finance • B2B

Mudflap is a fast-growing provider of fuel cards and a discount fuel app in the United States. The company offers drivers and fleets a way to save on diesel at over 2,700 truck stops nationwide by using the Mudflap Fuel Card and App, which come with no fees and significant discounts per fill-up. The Mudflap network is the largest diesel discount network in trucking and is recommended by a significant majority of carriers, owner-operators, and small fleets. The service also includes a partnership program for truck stops. Mudflap supports its users with a comprehensive app and card dashboard, FAQs, and customer support. The Mudflap Fuel Card is accepted wherever Visa is accepted, allowing for broader use and convenience for fleet managers and drivers.

📋 Description

• Build and scale production-grade web applications and APIs using Ruby on Rails. • Collaborate cross-functionally with product, design, and business teams to deliver impactful solutions. • Own features end-to-end — from technical design and implementation to deployment and monitoring. • Design and evolve architecture to ensure scalability, reliability, and performance. • Create clean, well-tested, maintainable code, with thoughtful attention to detail and edge cases. • Mentor teammates, conduct code reviews, and elevate engineering standards (for senior and staff levels). • Contribute to technical strategy and system design for key initiatives (for staff and team leads). • Continuously improve processes and tools to enable faster, higher-quality development.

🎯 Requirements

• Professional experience building web applications or APIs. • Familiarity with Ruby on Rails or similar frameworks. • Solid understanding of SQL databases (we use Postgres/AWS Aurora). • Comfortable with Git, testing, and debugging. • Curious, eager to learn, and passionate about growing your skills. • Deep experience building scalable production systems in Ruby on Rails. • Strong understanding of API design, database schema design, and integrations. • Ability to take ownership of complex features and projects. • Excellent communication skills and a desire to mentor others. • Pragmatic problem-solver who balances speed, quality, and long-term sustainability. • Proven technical leadership experience in designing large-scale systems. • Expertise in Ruby on Rails and backend architecture. • Track record of mentoring, influencing technical direction, and driving key initiatives. • Strong sense of ownership and accountability for outcomes. • Strategic thinker who can simplify complex problems for others. • For Team Lead candidates, experience managing 2+ full-time employees.

🏖️ Benefits

• Competitive salary and equity in a high-growth, profitable company • Multiple health benefit options • 401(k) with company match • Responsible Time Off policy • Opportunities and support for major career growth • Annual company offsite (“Mudfest!”)