Senior Full-Stack Software Engineer, CMS
Circle•Wilmington, DE
•$140,000 - $140,000•Remote
About The Position
Circle is seeking a Senior Full-Stack Engineer to join the CMS Platform team. This team is responsible for the systems that compose and present content across the Circle platform, including the Page Builder experience, forms, and future AI-first interfaces. The role involves working on both product-facing experiences (editing, previewing, publishing, layout, components) and the backend systems (content models, rendering/publishing pipelines, permissions, performance). The ideal candidate enjoys transforming ambitious product ideas into polished, scalable systems.
Requirements
- Strong alignment with our values.
- 5+ years of experience building and scaling SaaS products.
- Deep experience with Ruby on Rails and strong proficiency with React & TypeScript.
- A product mindset—you care about the “why,” sweat UX details, and iterate based on customer needs.
- Experience building complex, stateful UI (editors, builders, or design tools) and/or the systems behind them.
- Solid architectural judgment and a high bar for quality, balanced with pragmatism.
- Comfort working with and alongside AI tools in your development workflow.
- Excellent async communication and collaboration skills.
- Exceptional written and verbal communication skills in English (CEFR C2 or equivalent), as most collaboration at Circle happens asynchronously.
Nice To Haves
- Experience working on site builders, page editors, or CMS platforms.
- Experience with rich text/content editing, drag-and-drop interactions, component systems, or design tooling.
- Familiarity with web performance, caching strategies, and scaling high-traffic rendering/publishing systems.
- Prior experience at an early-stage or growth-stage startup.
- Contributions to open-source projects or developer communities.
Responsibilities
- Build and ship Page Builder features that directly impact how customers design and publish their sites.
- Work across the stack using React & TypeScript (frontend) and Ruby on Rails (backend).
- Partner closely with product/design to translate specs into high-quality, user-friendly experiences.
- Improve the architecture of the builder/editor and publishing pipeline for reliability, extensibility, and performance.
- Own projects end-to-end—from technical design through implementation, testing, rollout, and iteration.
- Review PRs thoughtfully and contribute to a culture of quality and continuous improvement.
- Work async-first and communicate clearly and proactively.
Benefits
- U.S.-benchmarked compensation globally
- Equity in the company with ongoing refresh grants
- 35 days of paid time off each year
- Remote-only team
- Company retreats twice a year in incredible destinations around the world
- Incredible flexibility and autonomy
- Benefits package that supports health, wellbeing, and professional growth
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
