👋 About Us

sunday is building the fastest and simplest way to pay at restaurants. By simply scanning a QR code, customers can pay, leave a tip, and leave in about 10 seconds. We believe the best products should be obvious, not complicated, and we are relentlessly focused on simplicity while earning the trust of restaurants and customers through every interaction. Today, sunday powers payments in thousands of restaurants across the United States, the United Kingdom, and France, helping venues increase table turnover, boost tips, and leverage valuable customer data. We challenge ourselves to exceed expectations, with a strong sense of ownership, fast execution, and ambitious growth.

About the Role

As a Customer Onboarding Intern at sunday, you will be at the heart of the company's growth. Your mission will be to support new restaurant partners as they adopt sunday’s solutions—from technical setup to team training—ensuring a seamless experience from day one.

You will work closely with the Sales and Account Management teams to turn every signed deal into a successful launch. Acting as a true project manager, you will own key onboarding milestones and play a direct role in product adoption and customer satisfaction.

This internship is a unique opportunity to join a fast-growing startup, learn by doing, and develop real expertise in the operational challenges of a high-impact SaaS product.

Key Responsibilities

1. Manage customer account administration and configuration in our internal tools (Locker, Salesforce, Zeus) and in Chargebee for billing.

2. Coordinate KYC/KYB verification processes through Checkout.com by collecting the legal documentation required to activate payments.

3. Ensure technical integration between sunday and the restaurant’s POS system, and oversee QR code and payment terminal orders.

4. Configure all sunday solutions according to each restaurant’s specific needs, including payment page customization, menu setup, and tipping rules.

5. Serve as the main point of contact for customers throughout the onboarding phase, providing clear and proactive updates on progress.

6. Organize and lead training sessions for restaurant teams to ensure full adoption of our tools.

7. Collaborate with Sales and Account Management teams to ensure smooth handovers and flawless launches.

8. Identify friction points in onboarding processes and propose concrete improvements.

About You

Must-Haves

• You are currently pursuing a degree in business, engineering, or a related university program and are looking for a final-year internship.

• You are detail-oriented and highly organized, capable of managing multiple projects simultaneously without losing track of priorities.

• You are comfortable with digital tools and learn quickly—working with a CRM or back-office platform does not intimidate you.

• You have strong interpersonal skills and can build trust with customers from the very first interaction.

• You communicate clearly, both verbally and in writing, in French.

Nice-to-Haves

• Previous experience (internship, part-time job, etc.) in a SaaS, customer success, support, or project management environment.

• Interest in technology topics and software integrations.

• Fluent English skills, which would help you grow quickly within our UK and US markets.

What We Offer

• A unique learning experience surrounded by exceptional people, with supportive mentorship to help build your career.

• A comfortable office in the heart of Paris.

• €1,250 monthly internship compensation.

• Meal vouchers.

• 50% reimbursement of public transportation costs.

Interview Process

1. Share your background by submitting your resume.

2. Get to know us through an introductory phone interview.

3. Impress your future colleagues with a case study.

4. Offer stage: we would love to welcome you to the team!

Thank you for taking the time to apply—we look forward to getting to know you!

sunday is an equal opportunity employer and does not discriminate. All qualified applicants will be considered without regard to race, creed, color, sex, affectional or sexual orientation, gender identity or expression, gender, ethnicity, religion, national origin, ancestry, nationality, age, disability, marital status, veteran status, genetic information, or any other characteristic protected by law (except where a characteristic constitutes a bona fide occupational qualification).