[Hiring] Senior Full-Stack Engineer, Payments Platform @Circle.so

Circle.so; United States; Remote; USD 130,000 - 140,000; Full time

Job summary

Circle.so, a fully remote company, is hiring a Senior Full-Stack Engineer. This role is critical in evolving their payments infrastructure, requiring extensive experience with Ruby on Rails, ReactJS, and payment system integration. The position offers competitive compensation, fully remote flexibility, and generous benefits including 35 days of PTO annually.

Benefits

35 days of PTO annually

Paid sabbatical after 5 years

100% medical coverage for employees and families

Annual bonus potential

Home office stipend

Learning & development stipend

Company retreats twice a year

Qualifications

• 5+ years of experience as a full-stack engineer.
• Strong proficiency in Ruby on Rails and ReactJS.
• Deep experience with payment systems like Stripe and PayPal.

Responsibilities

• Lead complex projects end-to-end and ensure high-quality releases.
• Integrate and scale payment solutions.
• Collaborate with leadership and design teams for seamless user experiences.

Skills

Ruby on Rails

ReactJS

MySQL/PostgreSQL

TypeScript

CSS/SCSS

TailwindCSS

Payment Systems Integration

Agile Development

Education

Bachelor's degree in Computer Science or related field

Job description

Jun 30, 2025 - Circle.so is hiring a remote Senior Full-Stack Engineer, Payments Platform. Salary: $130,000 - $140,000 usd per year. Location: USA.

About Us

Circle is building the world’s leading all-in-one platform for online communities. We make it possible for creators, coaches, educators, and businesses to bring together their audience with engaging discussions, live streams, events, chat, courses, and payments — all in one place, all under their own brand.

We’re proud to be a fully remote company of around 180 (and growing!) team members from 30+ countries around the world. We seek exceptional individuals around the world, set them up to do the best work of their lives, and in turn, create a meaningful impact in their own lives. We don't track hours, but we do manage for high expectations very closely. We collaborate across time zones, are highly async, and like to document a lot.

Twice a year, we bring the whole company together in beautiful places around the world for our company offsites. So far, we’ve hosted offsites in Turkey, Portugal, Mexico, Thailand, Colombia, Italy, Ireland, and more, with still more to come!

About the role

We’re looking for a seasoned full-stack engineer to help evolve and expand Circle’s payments infrastructure. As part of our Payments Platform team, you’ll play a key role in building, maintaining, and scaling the critical systems that power how our communities monetize on Circle.

This role focuses on the infrastructure behind our payment experiences — from integrating new payment providers to ensuring our checkout flows are reliable, secure, and seamless. You’ll be involved in all stages of the development lifecycle, from technical design to deployment and ongoing support.

As a senior engineer, you'll break down large projects into actionable tasks, lead development efforts, review PRs, and ensure high-quality releases behind feature flags. Your responsibilities will also include bug-fixing and continuous improvement of the codebase. This role requires high technical proficiency and a strong understanding of software development best practices.

If you're excited about scaling critical systems, integrating checkout flows with multiple payment providers, and collaborating across teams, this could be the perfect fit!

What you'll be doing

• Work autonomously across our Ruby on Rails backend and React front-end.
• Lead complex projects end-to-end, making thoughtful decisions around architecture, design, and product.
• Integrate and scale payment solutions like Stripe, PayPal, and native in-app payment providers.
• Scale our checkout experiences — ensuring they are seamless, reliable, and optimized.
• Build and improve critical monetization features with a strong product focus.
• Collaborate closely with Circle's leadership and product teams during feature design.
• Partner with designers to deliver seamless, intuitive user experiences.
• Move fast with purpose — balancing iteration speed with technical and UX excellence.

What you'll need to be successful

• Strong alignment with our values, find our values on our career page if you haven’t read up on them yet
• You are proficient in English (spoken, written, and reading) at a CEFR Level C2 / ILR Level 5.
• 5+ years of experience working as a full-stack engineer on complex web applications.
• Strong proficiency in Ruby on Rails, MySQL/PostgreSQL, ReactJS, TypeScript, CSS/SCSS, and TailwindCSS.
• Deep experience integrating and maintaining payment systems (e.g. Stripe, PayPal) — ideally with multiple providers in a production environment.
• A strong understanding of checkout flows, payment processing, subscriptions lifecycle, and monetization architecture.
• Motivation to understand the business, our users, their requirements, and to deliver results.
• A desire to work in an environment that values speed, autonomy, and accountability.
• Comfortable in a fast-paced environment with a certain level of ambiguity.
• Adaptable and able to change direction quickly when needed.
• Familiar with agile software development principles.
• Experience working on a fully distributed remote team.

Bonus points

• Experience Stripe’s advanced features, such as Connected Accounts, Invoicing, Subscriptions, and Subscription Schedules.
• Previous experience working with community platforms or creator monetization tools.

$130,000 - $140,000 USD per year

The cash compensation range shown is a starting point. In addition to equity, benefits and perks, your cash compensation is subject to an annual review and increase on a once per year basis.

The fun stuff

• 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. We also offer a paid sabbatical after 5 years.
• Generous U.S. benchmarked compensationand startup equity no matter where you are in the world.*
• Awesome medical coveragewith 100% coverage for you and your family, or medical reimbursement options where applicable!*
• Parental leavefor parents expanding their family, or just starting one.
• Home office stipendto help you get up and running.
• Learning & development stipendto help you level up your professional skills.
• Annual bonus potentialfor 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! We’ve had past retreats in Colombia, Portugal, and Mexico, with more planned on the horizon.
• Check out ourCareerspage for more.

*Your role, location and unique circumstance may affect this.

Diversity, Equity & Inclusion

As a fully-remote international company, diversity is baked into our DNA. Here’s how our CEO, Sid Yadav, frames our hiring mission: “let’s find talent in underserved and under-represented corners of the world, set them up to do the best work of their lives, and in turn, change their life.” To achieve this hiring mission, we offer competitiveU.S. benchmarkedcompensation no matter where someone’s located in the world, and we proactively seek candidates who expand representation of backgrounds, cultures and lived experiences in our teams.

Equal Employment Opportunity

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.If you require any accommodations during the recruitment process, please let us know and we will work with you to meet your needs.

How We Use Candidate Data

At Circle, we are committed to protecting your personal information. As a job applicant, the personal data you provide to us is collected and processed in accordance with theGeneral Data Protection Regulation (GDPR) in the EU and the California Consumer Privacy Act (CCPA). This notice outlines the types of personal information we collect, the purpose for collecting it, and your rights.

Information We Collect: We collect the following categories of personal information from job applicants:

• Contact information (such as name, email address, phone number)
• Employment history and qualifications
• Education history
• References and any other information you choose to share with us during the application process

Purpose of Collection: We collect this information for the following purposes:

• To assess your qualifications and suitability for the position
• To communicate with you during the recruitment process
• To comply with legal and regulatory obligations

Your Rights Under GDPR and CCPA: You have the following rights regarding your personal information:

• The right to request access to the personal information we hold about you.
• The right to request the deletion of your personal information, subject to certain legal exceptions.
• The right to opt out of the sale of your personal information (Note: We do not sell personal information).

For more information about how we handle your personal data or to exercise your rights, please refer to our full Privacy Policy.

By submitting your application, you acknowledge that you have read and understood this privacy notice.