Senior Software Engineer - Full Stack Internal Tooling

Responsibilities

• Design, build, and ship high-quality features across the stack, with a focus on creating reusable, maintainable UI components and polished frontends that scale with the platform
• Contribute to backend systems to deliver cohesive, end-to-end product experiences
• Define and enforce clean API boundaries between frontend and backend systems
• Collaborate with teammates to build a platform that supports orchestrating complex deployment workflows, progressive rollouts across clusters and regions, automated rollback of failed deployments, and observability into deployment health and performance
• Translate complex infrastructure technologies and concepts (e.g., Kubernetes, Argo Rollouts, deployment policies) into intuitive, user-friendly interfaces
• Engage directly with engineers across Reddit—conducting user interviews, gathering feedback, and deeply understanding developer workflows—to shape an opinionated “paved path” for releases
• Raise the bar for full-stack engineering across the team through code reviews, mentorship, and knowledge sharing
• Participate in the team’s on-call rotation and contribute to the reliability of our platform
• Continuously grow your technical and non-technical skills

Requirements

• 5+ years of experience building full-stack applications, with strong frontend expertise
• Deep proficiency in modern frontend development; experience with component-based frameworks (e.g., React, Lit) is valuable, but strong fundamentals matter most
• Solid backend experience and understanding of API design, service boundaries, and system architecture
• Experience with CI/CD, build systems (e.g., Buildkite, GitHub Actions, Drone) and progressive delivery tools (e.g., Argo Workflows/Rollouts/CD, Kayenta)
• Familiarity with Temporal, Kubernetes, and cloud platforms (AWS, GCP)
• Excellent communication skills that you employ to drive alignment, to navigate tradeoffs, to influence decisions and priorities, and to empower others
• A high degree of empathy, curiosity, and humility, with a passion for improving both developer experience and Reddit’s reliability
• A strong sense of ownership. You take initiative, lead projects end-to-end, and go beyond your immediate scope to ensure successful outcomes and drive impact across the platform
• A self-directed, action-oriented approach. You are comfortable operating in ambiguity, learning quickly, and driving work forward even when the path is not fully defined

Nice-to-Haves

• Experience on developer experience, infrastructure, or platform teams
• Experience building systems for CI/CD, progressive delivery, or other internal developer platforms
• Experience conducting user research or gathering feedback from technical users
• Experience with implementing UI/UX design yourself and comfort with design software such as Figma
• Experience with backend-adjacent technologies such as GraphQL, REST, HTTP, gRPC, or Go
• Familiarity with multi-cluster or multi-region deployment strategies
• Interest in exploring and integrating emerging technologies (e.g., generative AI) to improve developer workflows