Software Engineer, Ruby on Rails

Mudflap serves the $800B trucking industry — the backbone of the U.S. economy. Our market-leading payment products help truckers save thousands of dollars on fuel (their #1 business expense), while providing our fuel stop partners with access to new, hard-to-reach customers. We’re a fast-growing, customer-obsessed company looking for exceptional software engineers of all experience levels to help us build and scale the next generation of our payments and transactions platform. Whether you’re early in your career or a seasoned technical leader, you’ll have the opportunity to make a massive impact on a product used by hundreds of thousands of small trucking businesses nationwide. Work Location This role can be fully remote within the U.S. While we operate across multiple time zones, most collaboration happens during Pacific Time working hours. Candidates should be able to work a schedule aligned with PT. What You’ll Do Depending on your experience level, you’ll: 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. What We’re Looking For We hire talented engineers across experience levels. Here’s how we think about it: Software Engineer (1+ years) 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. Senior Software Engineer (4+ years) 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. Staff / Team Lead Engineer (8+ years) 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. Our Tech Stack Backend / API: Ruby on Rails Database: Postgres / AWS Aurora Web: Vue.js + REST iOS: Native (Swift) Android: Native (Kotlin) Infrastructure: AWS (ECS), CircleCI for CI/CD Why You’ll Love Working Here 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!”) Base Salary Range: $150,000 – $250,000 This information reflects the total base salary range for this position, spanning all experience levels. The exact compensation will depend on the candidate’s skills, experience, and other relevant factors. Who We Are Mudflap is on a mission to transform the trucking and logistics industry by leveling the playing field for owner-operators and small fleets. Backed by top-tier investors including QED, Matrix Partners, Commerce Ventures, NFX, and 500 Startups — and featured on the Forbes Fintech 50 — Mudflap helps small trucking businesses save money and grow. Our Values Be Customer Obsessed : We deeply understand customer needs and put them at the center of everything we do. Make it Count : Act like an owner by focusing on the impact of your work. Find a Way : Be a creative problem solver who pushes past roadblocks to win for our customers and teammates. Sweat the Details : We keep our standards high and achieve them by paying attention to every detail. Be Curious : Use a growth mindset to question assumptions, take risks, and stretch the boundaries of what’s possible.