Senior Software Engineer - Backend

About CodeRabbit CodeRabbit is the governance and control layer for agentic software development, helping engineering teams trust the code they ship. AI can generate code faster than people can review and understand it. Teams still need to know whether each change solves the right problem, fits their architecture, and is safe to ship. We provide independent validation grounded in codebase context and team standards, giving people the evidence they need to judge what should ship. Across Review, Triage, Explain, and Secure, our platform challenges changes before merge, prioritizes pull requests by value, impact, and risk, explains what changed and why it matters, and monitors the codebase for security vulnerabilities after merge. CodeRabbit serves nearly 20,000 customers and supports approximately 300,000 open-source repositories, performing over 2 million code reviews each week. Our $143M Series C, raised at a $1.5B valuation, supports further product development and international expansion. Role Overview As a Software Engineer at CodeRabbit, you'll be contributing to the development of advanced applied AI systems that revolutionize code review processes. You'll work at the intersection of intelligent systems and software engineering, creating tools that empower developers to iterate rapidly in complex environments. Your expertise will be crucial in developing solutions that enhance code quality, scalability, and developer productivity. You’ll help architect and build core backend systems — the infrastructure that powers our AI agent workflows, context-enriched code reviews, repo-level planning tools, and dashboard interfaces. You’ll work alongside AI researchers, infra specialists, frontend engineers, and product thinkers to build reliable, intelligent backend systems that power our developer tools at scale. Responsibilities Architect and build scalable backend services, APIs, and distributed systems Collaborate with ML engineers to integrate models into agent-based systems and AI products involving autonomous or task-driven agents Guide junior engineers through mentorship and technical reviews Own architectural decisions in new product features Ensure reliability, performance, and security across systems Contribute to an engineering culture of speed, quality, and pragmatic innovation Qualifications Education : Degree in Computer Science, Engineering, Artificial Intelligence, or a related technical field, or equivalent practical experience Experience : 5+ years building backend systems and distributed infrastructure Technical Expertise : Fluency in TypeScript and Node.js, or a similar modern backend stack; experience with micro services, async job queues, and event-driven architectures Systems Thinking : Familiarity with cloud platforms (AWS/GCP), containerization (Docker/Kubernetes), CI/CD pipelines, devops tooling, runtime infrastructure, and production observability Engineering Craft : Strong understanding of software engineering best practices, including testing, code reviews, and version control workflows Product Mindset : Thoughtful about trade-offs, user experience, and fast iteration Team Leadership : Willing to mentor, lead by example, and influence technical direction without being a pure manager Bonus Points Experience with code search, code graphs, tree-sitter, or static analysis tools, and an understanding of how to apply them in real-world engineering environments Experience integrating AI/LLM-based systems into product workflows Contributions to open-source or community projects Experience designing or implementing agent-based systems or AI products involving autonomous or task-driven agents Why Join Our Engineering Culture? CodeRabbit is building the next generation of AI-native developer tooling — starting with code review. We combine large language models with deep software engineering context to help teams ship faster, catch more bugs, and make better architectural decisions at scale. We are a high-ownership engineering culture. That means no passive execution, no waiting for perfect tickets, and no narrowly defined task boundaries. Engineers here find problems before they're assigned, use AI as a core part of how they build, ship with judgment, and own outcomes from proposal to production. Our operating philosophy : bias toward action, ship the smallest necessary coherent slice, validate proportional to risk, watch what happens, and make the system better. AI drafts; humans decide. Speed matters, but so does understanding what you ship. This opportunity will be energizing for people who want real ownership, pace, and high standards . It's uncomfortable for people who prefer slow consensus or heavily managed workflows. If you want to build tools that are changing how software gets written, and be held to the standard that the best engineers thrive under; we'd love to talk. Our Values 🤝 Collaborative Humans : Prioritizing collective intelligence 🚀 Fearless Innovators : Turning obstacles into growth opportunities 💪 Persistent, Passionate Developers : Thriving on complex, long-term challenges 🎯 Impact-Driven Creators : Crafting intuitive tools for developers 🧠 Rapid Learners and Un-learners : Adapting quickly in our fast-paced technological world