Circle is looking for two Senior Full-Stack Software Engineers to join our CMS organization—one on CMS Core and one on CMS Builder. You'll be responsible for some of the most critical and widely-used surfaces across our product. If you're a product-minded engineer who enjoys tackling big, user-facing problems and shaping architecture with care, you'll feel right at home here.
What You'll Do
- Build and ship high-impact features used by millions of people.
- Work across the stack using React & TypeScript (frontend) and Ruby on Rails (backend).
- Improve the quality of our codebase and identify architectural opportunities for long-term evolution.
- Collaborate closely with Circle’s co-founders and product/design teams throughout the spec and design process.
- Review PRs with care, contributing to a culture of thoughtful and constructive feedback.
- Work async-first and bring clear, proactive communication to everything you do.
What We're Looking For
- Strong alignment with our values.
- You are proficient in English (spoken, written, and reading) at a CEFR Level C2 / ILR Level 5.
- 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” behind what you’re building and aim to deliver great UX.
- Experience working on high-throughput, high-concurrency systems.
- Sound 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.
Nice to Have
- Experience working on CMS platforms or site builders.
- Prior experience at an early-stage or growth-stage startup.
- Familiarity with performance tuning and scaling in Rails applications.
- Contributions to open-source projects or developer communities.
Technical Stack
- React
- TypeScript
- Ruby on Rails
Team & Environment
You'll be joining a fully remote company of around 200 (and growing!) team members, within the CMS organization on either the CMS Core or CMS Builder team.
Benefits & Compensation
- Salary: $130,000 - $140,000 USD per year + startup equity.
- Fully remote: work from anywhere in the world!
- Autonomy and trust to do your job: we care about outcomes over everything else.
- Paid time away: all employees are given 35 days of PTO annually.
- Paid sabbatical after 5 years.
- Generous U.S. benchmarked compensation and startup equity no matter where you are in the world.
- Awesome medical coverage with 100% coverage for you and your family, or medical reimbursement options where applicable!
- Parental leave for parents expanding their family, or just starting one.
- Home office stipend to help you get up and running.
- Learning & development stipend to help you level up your professional skills.
- Annual bonus potential for roles that don't already receive variable income or commission.
- Company retreats: Twice a year, the Circle team gets together for a fully paid company retreat in incredible places around the world!
Work Mode
This is a global, fully remote role. We collaborate across time zones, are highly async, and like to document a lot.
Circle is an equal opportunity employer and as such, we do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or any other characteristic protected by applicable laws.






