Principal Software Development Engineer, International

Cargurus
Boston, Massachusetts, United StatesPosted 24 February 2026

Job Description

<div class="content-intro"><p><strong>Who we are</strong></p> <p>At CarGurus (NASDAQ: CARG), our mission is to give people the power to reach their destination. We started as a small team of developers determined to bring trust and transparency to car shopping. Since then, our history of innovation and go-to-market acceleration has driven industry-leading growth. In fact, we’re the largest and fastest-growing automotive marketplace, and we’ve been profitable for over 15 years.</p> <p><strong>What we do</strong></p> <p>The market is evolving, and we are too, moving the entire automotive journey online and guiding our customers through every step. That includes everything from the sale of an old car to the financing, purchase, and delivery of a new one. Today, tens of millions of consumers visit CarGurus.com each month, and ~30,000 dealerships use our products. But they're not the only ones who love CarGurus—our employees do, too. We have a people-first culture that fosters kindness, collaboration, and innovation, and empowers our Gurus with tools to fuel their career growth. Disrupting a trillion-dollar industry requires fresh and diverse perspectives. Come join us for the ride!</p></div><p><strong>Role overview</strong><br>We’re looking for an accomplished and motivated Principal Software Engineer to provide technical leadership for international product initiatives in our Canadian and UK markets. In this role, you’ll collaborate with multiple cross-functional teams, mentor engineers, drive complex architectural decisions, and ensure the delivery of robust, high-quality solutions that respond to the evolving demands of our international business.</p> <p>Success in this role requires a balance of deep technical expertise and strong business judgement to guide teams in making strategic technology decisions that align with both immediate and future product needs. You must quickly learn and adapt to new challenges, working closely with engineers and stakeholders to translate requirements into scalable solutions.</p> <p>Potential project opportunity examples:</p> <ul> <li>Design greenfield projects that use modern distributed systems and AWS technologies.</li> <li>Advise and support enhancements to existing products to assist shoppers with financing, appointment scheduling, and vehicle trade-ins.</li> <li>Architect and guide integrations with external partners, leveraging service-oriented architectures and NoSQL databases.</li> </ul> <p>In this position, you’ll have the opportunity to shape the architecture, scalability, and long-term technical vision of our international teams. Car expertise is welcome but isn’t required, what matters most is your passion for technology, your commitment to engineering excellence, and your drive to have a real impact.</p> <p><strong>What you’ll do</strong></p> <ul> <li>Work closely with engineers, product managers, and stakeholders across the company to gather new product requirements and transform them into effective technical solutions.</li> <li>Own the full development lifecycle from refining initial concepts and architecting advanced features as robust microservices, to implementing and delivering practical, high-quality systems.</li> <li>Contribute to high standards of quality by ensuring code is reliable, performant, and well-tested, with automated tests across the testing pyramid that ensure strong production health of our systems.</li> <li>Promote a culture of observability by helping teams leverage operational metrics to diagnose, mitigate, and resolve challenging production issues across multiple services and boost operational excellence.</li> <li>Use AI technologies, optimizing the software development process and driving greater efficiency across teams.</li> <li>Mentor engineers by offering guidance, actionable feedback, and insightful recommendations to support sound technical decision-making.</li> </ul> <p><strong>What you’ll bring</strong></p> <ul> <li>Bachelor's degree or higher in ... (truncated, view full listing at source)