Senior Full-stack Engineer

2 months ago


New York City, United States Circle.so Full time

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 150 (and growing) team members from 30+ countries around the world. We strive to find exceptional talent, empower them to do their best work, and in turn, have a meaningful impact in their own lives. We don’t track hours, but we manage for outcomes in an a-synchronous culture.


Twice a year, we bring the whole company together for incredible company retreats in beautiful places around the world


About the role

We're looking for a Senior Full-stack Engineer to join the special projects team as we aim to make Circle the top choice for creator/brand-led communities. You’ll be working on internal tools used by everyone at Circle, cutting-edge AI features, and new customer-facing features used by millions.


In this role, you will collaborate with our leaders, designers, other engineers, and participate in all stages of the development lifecycle --from initial task definition to final deployment. As a senior engineer, you'll break down large epics into actionable tasks, follow through with development and testing, review PRs, push updates to production, and gradually release behind feature flags. Your responsibilities will also include bug-fixing and continuous improvement of the codebase. This role requires a high level of technical proficiency and a strong understanding of software development best practices.

What you’ll be doing

  • Work autonomously on a product built in Ruby on Rails backend and React front-end.
  • Build critical features and improvements for our web app, with a product-first mindset.
  • Work closely with Circle's leaders throughout the feature design process.
  • Work closely with our designers to create a world-class user experience.
  • Improve the quality of our codebase and identify architectural deficiencies
  • Learn, implement, and maintain new integrations with services like OpenAI, Zendesk, Hubspot, Notion, and Slack to improve the daily operations of our customer-facing teams.
  • Foster a bias for action, prioritizing speed of iteration without compromising on the quality of code or user experience.

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 C1 / ILR Level 5.
  • 6+ years experience working as a full-stack engineer on complex web applications with significant scale (100k+ rpm, 100GB+ databases).
  • Strong proficiency in Ruby on Rails, MySQL/Postgresql, ReactJS, TypeScript, CSS/SCCS, TailwindCSS.
  • Familiarity with both frontend and backend is necessary, but a high degree of proficiency in both is not a requirement. Or, put another way: you should be able to individually build most small to medium features end-to-end across the stack, but you can be much better at backend than at front-end.
  • A desire to work in an environment which values speed of iteration and individual autonomy, while also embracing personal accountability and the ability to collaborate effectively as part of a dynamic team.
  • Great communication skills both in writing and verbal/oral (English).
  • Should be able to lead a complex project end to end with judgment and an attention to detail when it comes to architectural, product, design, and process decisions, your judgment should inspire a high level of trust within the team.
  • Experience working on a fully distributed remote team.
  • Comfortable in a fast-paced environment with a certain level of ambiguity, especially when learning and picking up new technologies when projects require it.

Bonus points

  • Previous experience working with community and / or creator platforms.
  • Experience with creating robust integrations with external services.
  • Experience with OpenAI, large language models, or other AI tools.
  • Experience at a fast-growing start-up.
  • A track record of picking up new technologies and skills as you ship high-quality code.

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 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 We’ve had past retreats in Colombia, Portugal, and Mexico, with more planned on the horizon.

Check out our Careers page 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 competitive U.S. benchmarked compensation 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.



  • New York, United States Imprint Payments Full time

    The mission of the Customer Technology team is to build an innovative frontend user experience for Imprint cardholders and merchants by providing mobile and web applications. Our mission is to leverage cutting-edge technologies to reinvent banking sy Full Stack Engineer, Engineer, Full Stack, Senior, Technology


  • New York, United States Care Dynamics, LLC Full time

    Job DescriptionJob DescriptionSenior Full Stack EngineerAbout the JobJoin a fast-growing team transforming the $1T US trucking industry with a rideshare freight platform that uses machine learning to optimize truck space and lower shipping costs. As a Senior Full Stack Engineer, you'll play a critical role in shaping the future of our product, working...


  • New York, New York, United States Allstar Gaming, Inc. Full time

    About the RoleWe are seeking a highly skilled Senior Full Stack Engineer to join our team at Allstar Gaming, Inc. as a key member of our engineering team. As a Senior Full Stack Engineer, you will be responsible for the delivery of critical features in existing applications across both frontend and backend.Key ResponsibilitiesDesign, develop, and deploy...


  • New York, New York, United States Allstar Gaming, Inc. Full time

    About the RoleWe are seeking a highly skilled Senior Full Stack Engineer to join our team at Allstar Gaming, Inc. as a key member of our engineering team. As a Senior Full Stack Engineer, you will be responsible for the delivery of critical features in existing applications across both frontend and backend.Key ResponsibilitiesDesign, develop, and deploy...


  • new york, United States Motion Recruitment Full time

    Our client is a leading online reservation company - they specialize in seamless reservations for the venue/restaurant of your choice. They are looking for a Senior Full Stack Engineer who is experienced with ReactJS, TypeScript, and Python. You can also use NodeJS for the back end.  Responsibilities Work Full Stack with ReactJS/NodeJS/Python Help...


  • New York, New York, United States The Developer Link Full time

    The Developer Link has partnered with a growing early-stage startup in the tech industry that is searching for a Backend Leaning Senior Full Stack Engineer to join their team. This company has a team comprising of experienced professionals from renowned organizations, and is well-funded, with backing from investors that have previously invested in successful...


  • New York, United States Datadog Full time

    Senior Software Engineer - Full Stack Paris, France; Nantes, France; Bordeaux, France; Sophia Antipolis, France; Lyon, France; Montpellier,France; Tel Aviv, Israel The mission of the inbox team is to manage alerts coming from any system, service or infrastructure for organizations. This means having to sort thousands of alerts everyday, from dozens of...


  • New York, United States TIJ Global Services IINc Full time

    Job DescriptionJob DescriptionThis is a contract role for a Senior Full Stack Engineer based in New York, NY.Must send linkedin profile link.QualificationsNeed expert level in Python, typescript , react etcStrong understanding of database management and design (SQL, NoSQL)Ability to work collaboratively in a team setting and excellent communication...


  • New York, United States tlnt Full time

    Job DescriptionJob DescriptionOur client, a well-funded and rapidly growing FinTech startup, is seeking a talented Senior Full-Stack Engineer to join their team. This is a unique opportunity to be part of a company that's revolutionising the business expense management industry. About the Company This startup has developed a groundbreaking approach to...


  • New York, United States Spot & Tango Full time

    Job DescriptionJob DescriptionWho We AreSpot & Tango is an innovative pet health & wellness brand that delivers personalized meal plans on a subscription basis. Our recipes are developed by leading animal nutritionists, and are made with only real, human-grade ingredients... and nothing artificial! We have lofty goals (to make every dog in the country...


  • New York, United States Looking Glass Factory Full time

    Job DescriptionJob DescriptionWho we areHi! We’re Looking Glass — a company based out of Brooklyn & Hong Kong — and we make holograms. We are a small (and growing!) passionate team of artists, inventors, and engineers building a completely new interface paradigm - one that is three-dimensional, shared, and magical. To help us expand and improve our...


  • New York, United States Looking Glass Factory Full time

    Job DescriptionJob DescriptionWho we areHi! We’re Looking Glass — a company based out of Brooklyn & Hong Kong — and we make holograms. We are a small (and growing!) passionate team of artists, inventors, and engineers building a completely new interface paradigm - one that is three-dimensional, shared, and magical. To help us expand and improve our...


  • New York, New York, United States Sparc The World Full time

    About the RoleWe are seeking a highly skilled and experienced Senior Full-Stack Engineer to join our team at Sparc The World. As a key member of our engineering team, you will play a critical role in shaping the technology strategy and direction of our company.Key ResponsibilitiesDesign, develop, and deploy scalable and efficient software solutions that meet...


  • New York, United States GreenLite Technologies Full time

    The Role As a Senior Full Stack Software Engineer at GreenLite, you will play a crucial role in designing and developing scalable applications from both back-end and front-end perspectives. You'll take full ownership of features in a fast-paced environment, working with a modern technology stack that evolves as our early-stage startup progresses. Your...


  • New York, United States GreenLite Technologies Full time

    The Role As a Senior Full Stack Software Engineer at GreenLite, you will play a crucial role in designing and developing scalable applications from both back-end and front-end perspectives. You'll take full ownership of features in a fast-paced environment, working with a modern technology stack that evolves as our early-stage startup progresses. Your...


  • Alexander City, Alabama, United States Accord Technologies Inc. Full time

    **Job Title:** Senior Full Stack Engineer**About Accord Technologies Inc.:**We are a leading technology company that specializes in developing innovative software solutions for the financial services industry.**Job Summary:**We are seeking a highly skilled Senior Full Stack Engineer to join our team. As a key member of our engineering team, you will be...


  • New York, New York, United States Convene Full time

    About the RoleWe are seeking a highly skilled Senior Full Stack Software Engineer to join our team and play a key role in developing and implementing technology solutions that power our Meetings and Workplace product offerings.Key Responsibilities:Lead the technical creation and evolution of our customer-facing products in collaboration with the overall...


  • New York, United States Capital One Full time

    Center 1 (19052), United States of America, McLean, VirginiaSenior Software Engineer, Full StackDo you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and...


  • New York, United States Capital One Full time

    Locations: VA - McLean, United States of America, McLean, VirginiaSenior Software Engineer, Full StackDo you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers,...


  • New York, United States Care Dynamics, LLC Full time

    Job DescriptionJob DescriptionSr Full Stack EngineerAbout the job We are Care Dynamics, a recruitment agency specializing in delivering customized solutions to our diverse portfolio of clients. With a focus on innovation and excellence, we are seeking an experienced Sr Full Stack Engineer to join our client, a leading AI-text identification platform.Whats in...