Software Engineer Intern

About OnePay

OnePay is the consumer fintech trusted by millions of Americans to make money better.

Our financial system is broken. High fees, low rates, and too few ways to actually grow your money. We're fixing it. And we're moving fast.

We're an all-in-one financial services platform that brings together banking, high-yield savings, credit cards, point-of-sale lending, investing, and crypto in one place. We also partner with employers, HCM providers, gig platforms, and others to deliver embedded financial services to millions of employees and frontline workers.

We're backed by Walmart, the world's largest retailer, and Ribbit Capital, one of fintech's most respected investors, giving us rare scale, distribution, and the opportunity to build something truly category-defining.

But what really sets OnePay apart is how we move. Our customers don't have time to wait... and neither do we. This place moves fast, and we're looking for people who are:

• Ready to run
• Hungry and driven by urgency
• Exceptional at what they do, with low ego
• Comfortable operating in motion

The Role

• Team Integration: As an intern, you'll be an essential part of our engineering team, working alongside skilled professionals on cutting-edge projects. You'll collaborate with cross-functional teams, including Platform, Product, and more, gaining exposure to the broader business.
• Real-World Projects: You'll take on a variety of projects that align with your skills and interests, contributing to key engineering initiatives. By the end of the program, you'll showcase your work through a final presentation to your team and peers.
• Skill Building & Career Growth: Throughout the internship, you'll attend workshops focused on technical skills, resume building, interview prep, and professional development. You'll also have the chance to engage with company leadership during networking events.
• Mentorship: Receive guidance and feedback from your manager, as well as a dedicated mentor who will help you navigate your internship experience, ensuring continuous learning and growth.

You Bring

• Pursuing a Bachelor's Degree: You're a current undergraduate student expected to graduate in the Fall of 2027/Spring of 2028 majoring in Engineering or a related field.
• Prior Experience : You've completed at least one previous software engineering internship, or have built substantial personal or academic projects you're excited to talk through.
• Availability: This is a full-time, 8-week program running June 21 - August 13, 2027. You are available to work in our New York City office at least 3-4 days a week throughout.
• Proactive & Collaborative Attitude: You have an act-like-an-owner mentality, thrive in a fast-moving environment, and enjoy working with others to achieve collective goals.
• Critical Thinking & Problem-Solving Skills: You enjoy tackling complex challenges, analyzing problems, and developing solutions. Clear communication of ideas is one of your strengths.
• Organized & Detail-Oriented: You're a keen listener with strong organizational skills, capable of managing multiple tasks efficiently.
• Excited to Learn & Grow: You are passionate about being part of a rapidly growing organization and look forward to expanding your skills in a real-world setting.

Tools We Use

We use Typescript front to back, with node and NestJS frameworks for server code and React Native for our iOS, Android, and Web clients. We run on a highly distributed cloud-native stack with Kubernetes and AWS, and scale and resiliency are at the heart of everything we build. We also embrace agentic development, so engineers have their choice of a variety of models and agent harnesses, including Claude Code, Cursor, Codex, and more to fit their workflow. While you don't need experience with our exact stack, familiarity with modern software engineering practices will help you ramp up quickly.

What We Offer

• Early access to a high potential, high growth fintech
• Beautiful Tribeca Office
• Fully stocked kitchen with beverages and snacks
• Weekly professional development and team social outings

Program & Application Timeline

• Program runs June 21 - August 13, 2027 (8 weeks, full-time, in our NYC office)
• We review applications and conduct interviews on a rolling basis as they come in
• No offer decisions will be made until the application window closes - all candidates are evaluated together before final decisions go out
• We are targeting a finalized cohort by December 1, 2026
• If there are intern spots still available, we may reopen applications in Spring 2027

Work Authorization: OnePay will not sponsor applicants who need employment sponsored visas for this position. Future sponsorship will not be considered.

Standard Interview Process

Our process varies by role. Most candidates go through:

• AI-assisted initial screen
• Interview with Talent Partner
• Technical or Hiring Manager Interview
• Team Interview
• Executive Interview
• Offer!

Equal Employment Opportunity

To build technology and products that are used and loved by people and solve real-world problems, we need to build a team with many different perspectives and experiences. We are an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We encourage candidates from all backgrounds to apply. Applicants in need of special assistance or accommodation during the interview process or in accessing our website may contact us at View email address on click.appcast.io.