Senior Software Engineer, Developer Experience

Greenlight is the leading family fintech company on a mission to help parents raise financially smart kids. They are seeking a Senior Software Engineer, Developer Experience to join their Developer Experience team, focusing on improving developer tooling, performance, and reliability while leveraging AI to enhance developer infrastructure.

Responsibilities:

• Design, build, and maintain reusable developer tooling (CLI tools, NPM and Kotlin libraries) shared across all engineering teams
• Enable a consistent and friction-free local development experience for engineers
• Build and maintain robust CI/CD pipelines (GitHub Actions, ArgoCD) that provide fast, reliable feedback loops
• Identify and eliminate bottlenecks in the developer workflow through proactive engagement with engineering teams
• Contribute to and enforce standards for code reusability and maintainability across packages and libraries
• Integrate AI tooling (LLMs, agentic workflows, code generation) into CI/CD pipelines and developer workflows to accelerate delivery
• Build AI-assisted automation for test generation, code review, and performance anomaly detection
• Evaluate and adopt emerging AI developer tools (e.g., Claude, Cursor, custom agents) and drive their adoption across engineering
• Design intelligent observability solutions using AI to surface actionable signals from Datadog and other monitoring platforms
• Partner with cross-functional teams to embed AI capabilities into the full software delivery lifecycle
• Partner with architects, developers, and QA teams to design and execute a comprehensive performance testing strategy
• Validate performance, stability, scalability, and reliability across web and mobile product surfaces
• Build and maintain a scalable performance testing environment supporting both functional and load scenarios
• Perform root-cause analysis on performance bottlenecks and provide clear recommendations
• Coordinate performance testing across internal teams and external resources, ensuring complete test coverage for each release
• Communicate testing status and performance insights to engineering leadership, translating data into actionable recommendations

Requirements:

• 5+ years of experience in software engineering, with a focus on developer tooling, platform engineering, or DevOps
• You care deeply about developer productivity and treat your colleagues as your customers
• You are a strong systems thinker who can navigate both platform-level architecture and the day-to-day pain points of individual engineers
• You are excited by AI and actively look for ways to apply it to real engineering problems, not just as a buzzword
• You communicate clearly across engineering, QA, and leadership translating technical findings into business-relevant insights
• You are comfortable working in a cross-geography setup and can lead and mentor peers in a distributed environment
• You bring a quality-first mindset and champion best practices in testing, observability, and release confidence