Greenlight is looking for a Senior Software Engineer, Developer Experience to join our Developer Experience (DevEx) team, a team dedicated to ensuring every engineer has the right tools, processes, and environment to do their best work. This role blends hands-on developer tooling engineering with performance and reliability expertise, and carries a forward-looking mission: leverage AI to transform how we build and operate our developer infrastructure.

You will own tooling that spans the full developer lifecycle, from local development environments and CI/CD pipelines to performance testing frameworks and AI-powered automation. Your work will directly reduce friction for engineering teams, accelerate delivery, and ensure that every release meets Greenlight's high bar for performance and reliability.

Technologies we use:

• Backend: Kotlin, TypeScript/Node.js
• Cloud experience (AWS preferred)
• Kubernetes, Ambassador, Helm
• Github Actions (or other CI experience i.e CircleCI, Jenkins, TravisCI)
• Continuous Delivery (ArgoCD or equivalent)
• Software and Shared Library development experience
• All major AI tools and infrastructure

Your day-to-day:

• 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

What you'll bring to the team:

• 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

Not sure this one's for you? Don't count yourself out. Show us what you've got and we'll reach out if there's a great fit.

Work perks at Greenlight:

• Medical, dental, vision, and HSA match
• Paid life insurance, AD&D, and disability benefits
• Traditional 401k with company match
• Unlimited PTO
• Paid company holidays and pop-up bonus holidays
• Professional development stipends
• Mental health resources
• 1:1 financial planners
• Fertility healthcare
• 100% paid parental and caregiving leave, plus cleaning service and meals during your leave
• Flexible WFH, both remote and in-office opportunities
• Fully stocked kitchen, catered lunches, and occasional in-office happy hours
• Employee resource groups

Our stance on salaries:

Greenlight provides a competitive compensation package with a market-based approach to pay and will vary depending on your location, experience and skill set. The total compensation package for this position will also include a discretionary performance bonus, equity rewards, medical benefits, 401K match, and more. Greenlight conducts continuous compensation evaluations across departments and geographies to ensure we are keeping our pay current and competitive.

The estimated base pay range for this position in (NY, CA, WA): $130,000- 180,000

The estimated base pay range for this position in (CO): $130,000- 155,000