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# Senior Product Engineer

- **Company:** Blacksmith Software
- **Location:** New York, United States
- **Experience:** Expert
- **Salary:** $200,000.0 - $300,000.0
- **Skills:** React
- **Published:** September 17, 2026
- **Apply:** https://jobs.ashbyhq.com/Blacksmith/604cabdf-a54d-4dba-8dee-904e88ed5f16/application?_gl=1*xhg7bv*_gcl_au*NzQ1MzUyMzk1LjE3ODc1OTY4ODA

## About the Role

 **You are a good fit if you**

- Have strong CS fundamentals and a deep understanding of React and modern frontend development.
- Can work closely with design to build polished, high-performance UIs — and aren’t afraid to go deep on browser performance, rendering bottlenecks, or complex component architecture.
- Have 5+ years of software development experience.
- Enjoy working in person 5 days a week in NYC.
- Enjoy working at a very early-stage startup and are comfortable with ambiguity.



## Description

 **What you could work on**

- Build and evolve Codesmith, our background coding agent — designing the workflows, UI, and infrastructure that let engineers delegate coding tasks to AI and ship faster
- Create tools that help engineers and AI agents debug flaky CI jobs: surfacing patterns in test failures, correlating logs with infrastructure signals, and making root cause analysis fast and intuitive
- Work closely with design to ship polished, high-performance product surfaces across our analytics and observability platform, where engineers go to understand their CI systems
- Prototype and iterate rapidly on AI-powered features — from natural language interfaces to automated fix generation — and own the full stack from prompt design to backend service to UI
- Contribute to the architecture of the agent platform: how we run sandboxed workspaces, and orchestrate agent sessions



## About Blacksmith Software

The fastest way to run your GitHub Actions. Trusted by [@supabase](https://x.com/supabase), [@trychroma](https://x.com/trychroma), [@clerk](https://x.com/clerk) and 1000+ others.



[Company profile](https://www.wearedevelopers.com/companies/4297-blacksmith-software)

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