Founding Product Manager

JUST

Product

Paris, France

Posted 6+ months ago

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🤝 Permanent & full time contract

💮 +5 years at either start up or tech company

🌍 Location: Paris HQ

✨ Hey you,

Today, JUST offers a plug-and-play checkout experience that combines a high-performance, fast checkout with marketing triggers, enabling merchants to increase revenues and margins by an average of 10-15%.

With over 500 merchants onboarded in France and more than 1 million users, we’re now extending operations to the UK to drive innovation that will impact millions of consumers and brands worldwide.

Yes, we’re on a mission to reshape the entire customer journey and make shopping simple, smart, and social.

Our ambition is to serve a new generation of consumers for the next several decades, as PayPal did 30 years ago. But our vision goes beyond checkout: we draw inspiration from social commerce innovations in China.

We believe the future of shopping lies in seamless experiences that merge simplicity, personalization, and social interaction. This will empower consumers to make purchases effortlessly, track orders, receive fast refunds, enjoy personalized shopping experiences, and even engage in real-time shopping with friends.

"Becoming the new standard of shopping for the next decades" isn’t just a tagline—it’s our commitment to the future.

Join us on our mission to make shopping simple, smart, and social.

Here’s our landing page… take a look : getjust.eu

Can you do it?

At JUST, our mission is to change the way e-commerce operates by delivering a seamless checkout experience that rivals the best in the industry. As Founding Product Manager, you’ll play a key role in driving this transformation by shaping and executing our product vision, aligning cross-functional teams around a shared roadmap, and delivering innovative solutions that delight both merchants and shoppers.

Join us as a Founding Product Manager and be at the forefront of reshaping online shopping for merchants and consumers alike.

🔎 What is the focus of the role?

Establish a strong product culture: Champion a culture of curiosity, speed, experimentation, and continuous learning—embedding product thinking across the entire organization.

Design seamless and intuitive user experiences: wireframes, mockups, interactive prototypes.

Ideate and iterate on new features/products aligned with user needs and business goals.

Collaborate with the tech team to turn insights and mockups into concrete, prioritized solutions.

Measure design impact through product KPIs and continuously adjust using a data-driven approach.

Organize and facilitate Product Discovery: co-creation workshops, user testing, rapid iteration cycles.

Ensure visual and functional consistency across the product (design system, guidelines, cross-platform experience).

Act as a product and design culture ambassador by sharing best practices and promoting a user-centered approach.

The products you’ll be working on:

💳 Creating a world-class checkout experience

Continuously improving a fast, simple, and reliable checkout flow that already powers transactions for our merchants — with a focus on removing remaining friction points and optimizing for conversion and shopper satisfaction.

📈 Evolving the merchant dashboard

Enhancing the existing dashboard used by merchants to manage their relationship with JUST — making it more intuitive, insightful, and actionable to better support onboarding, configuration, and performance monitoring.

⚙️ Scaling technical integrations

Strengthening and expanding our current integration infrastructure to support a rapidly growing merchant base — solving new technical challenges around scalability, flexibility, and ease of implementation.

🌱 You and your approach to the role?

Strategic thinking

Ability to see the big picture, set a clear direction, and align the product roadmap with business goals and market opportunities.

Empathy

Deep understanding of both merchant and consumer needs, as well as the ability to listen, communicate, and lead with emotional intelligence across teams.

Strong communication

Clear and persuasive in both written and verbal communication — able to synthesize complex ideas and rally diverse stakeholders around a shared vision.

Collaboration & influence

Skilled at working cross-functionally and building trust with engineering, design, sales, and leadership — even without direct authority.

Adaptability

Comfortable navigating ambiguity, shifting priorities, and fast-paced change — staying focused while adjusting course when needed.

Curiosity & growth mindset

Always eager to learn, explore new ideas, and iterate — fostering a culture of experimentation and continuous improvement.

🔬 Preferred experience

Prior experience as a Founding Product Manager, ideally owning product management and product design execution.

Experience working in startup and tech environments, with a hands-on approach and comfort navigating ambiguity.

Has witnessed or contributed to a product or company scale-up journey — ideally from early traction to broader adoption.

Strong background in technical products — you’ve worked on APIs, data flows, integrations, or similar backend-facing experiences.

🎁 Bonus: Familiarity with the e-commerce ecosystem, including merchant tools, checkout systems, or payment infrastructure.

👊 Sounds like you? Then, we should probably chat.

If you're reading through this and recognize where you are now or how you're projecting yourself then we should probably chat.

If you're reading through this and have even the slightest doubt this role might be it for you, then we should probably chat.

Don't let us miss out on the opportunity to meet you 🙃

Send us your application !

If you want to learn more about JUST take a quick look at:

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➡️ What's next?

What are we looking for?

an overview of your background (either a resume or a Linkedin profile)

a short note to tell us why we're a great fit for each other and how you envision your future @JUST

Don't hesitate to share any questions you may have in mind while sending us your application. If you're wondering about it, we should probably share more info in here.

We'll get back to you within a week. No matter our decision, you will hear from us 🙃

🍰 What’s the process like:

The Screening Interview: 30-minute video call to better understand where you at right now, how you project yourself in the future, and how it all relates to JUST’s path. It's also during this first step that we talk about your salary expectations.

The Who interview: A 45 minutes to 1 hour interview with members of the team related to he job you’d be applying for, to learn more about you as a person, your motivations, and your past experiences. Our goal is to understand who is applying to JUST.

The Focused interview : Our Focused Interview is your chance to showcase how well your skills, experience, and values align with the role. This interview takes a deeper dive into the specific outcomes and competencies we’re looking for, going beyond a traditional job description. You’ll meet with team members who want to understand (i) your technical and (ii) behavioral skills, as well as (iii) how you align with our company culture. It’s designed to ensure that both you and the position are the perfect fit for one another. Think of it as the final step in making sure this opportunity is the right one for you, and a chance to highlight what makes you the best choice.

Founder call: 30-minute discussion with one of JUST's founders around vision, mission, and culture.

Reference calls: Once we reach the founder call, we’ll get back to you asking for a couple of contacts to serve as references for JUST.

We’ll get back to you as quick as we can after each steps. Our process usually last over 2 Weeks.

💌 How long until you get back to me?

Once we receive your application, we’ll review it and get back to you within 5 working days.

After each step of the interview process, you’ll receive feedback via email within 1 working day.

If you don’t hear from us in time, feel free to nudge us with an email (we all miss a deadline now and then 😉)!