J
Desenvolvedor Full Stack (m/f/d)
Joy_
Descrição da vaga
<p><strong>What we do</strong></p>
<p>Imagine <strong>every product on the internet, instantly available to you.</strong> You could take anything from any online shop, resell it, and earn from it. You could spend your Payback points or miles on <strong>something you actually want</strong>, instead of another forgettable knife set. And your AI could buy any product in the world for you, without your intervention.</p>
<p><strong>We built exactly that. It's live, and it's running today.</strong></p>
<p>Joy_'s AI infrastructure runs the <strong>entire e-commerce value chain end to end</strong>: sourcing, checkout, payment, fulfillment, customer care, and returns. Across any online shop on the planet. No merchant contracts, no closed networks. This is our <strong>Universal Purchasing Infrastructure</strong>, and it sits right at the center of where AI commerce is going.</p>
<p>On top of it, we build our own business models. The first one live and proven: <strong>the gift card.</strong> That is a 20 billion euro market in Germany alone, the single most-gifted thing in the country, and nobody has innovated on it in years. Now there is a gift card you can redeem for any product, from any shop, for any wish.</p>
<p>We've raised from top European funds and angels who have built and scaled some of the most relevant tech and commerce companies around. Behind it all: a team of twelve, spread across Europe, with a strong center and our office in Berlin.</p>
<p>The technology is live. Now we are growing the engineering team that builds on top of it, and the gift card is where you come in.</p>
<h2>Tasks</h2>
<p><strong>The role</strong></p>
<p>As a full-stack engineer, you work across the whole gift card product: the screens customers use and the services running behind them. Day to day, you will:</p>
<ul>
<li>Own features from discovery to production: You will partner directly with the other teams to scope ideas, design architectures, and ship features - collaborating closely with senior peers while leveraging AI tools to iterate with extreme speed.</li>
<li>Build and refine the gift card experience, from buying a card to redeeming it.</li>
<li>Develop the back-end that powers it: APIs, services, and data models.</li>
<li>Work on the partner side too, the B2B self-serve product and the embeddable widgets that let other companies plug Joy_ in.</li>
<li>Keep the codebase healthy, with shared components, design tokens, sensible tests, and an eye on performance and accessibility.</li>
</ul>
<h2>Requirements</h2>
<p><strong>What we're looking for</strong></p>
<p>We are not reading your CV for logos or degrees. Show us what you have built and shipped.</p>
<ul>
<li><strong>3+ years building modern web products, full-stack.</strong> Genuinely comfortable on both the front-end and the back-end.</li>
<li><strong>A deep sense of product ownership.</strong> You don't wait to be told what each step is. When you see a broken piece, you take it upon yourself to fix it. You ca
<p>Imagine <strong>every product on the internet, instantly available to you.</strong> You could take anything from any online shop, resell it, and earn from it. You could spend your Payback points or miles on <strong>something you actually want</strong>, instead of another forgettable knife set. And your AI could buy any product in the world for you, without your intervention.</p>
<p><strong>We built exactly that. It's live, and it's running today.</strong></p>
<p>Joy_'s AI infrastructure runs the <strong>entire e-commerce value chain end to end</strong>: sourcing, checkout, payment, fulfillment, customer care, and returns. Across any online shop on the planet. No merchant contracts, no closed networks. This is our <strong>Universal Purchasing Infrastructure</strong>, and it sits right at the center of where AI commerce is going.</p>
<p>On top of it, we build our own business models. The first one live and proven: <strong>the gift card.</strong> That is a 20 billion euro market in Germany alone, the single most-gifted thing in the country, and nobody has innovated on it in years. Now there is a gift card you can redeem for any product, from any shop, for any wish.</p>
<p>We've raised from top European funds and angels who have built and scaled some of the most relevant tech and commerce companies around. Behind it all: a team of twelve, spread across Europe, with a strong center and our office in Berlin.</p>
<p>The technology is live. Now we are growing the engineering team that builds on top of it, and the gift card is where you come in.</p>
<h2>Tasks</h2>
<p><strong>The role</strong></p>
<p>As a full-stack engineer, you work across the whole gift card product: the screens customers use and the services running behind them. Day to day, you will:</p>
<ul>
<li>Own features from discovery to production: You will partner directly with the other teams to scope ideas, design architectures, and ship features - collaborating closely with senior peers while leveraging AI tools to iterate with extreme speed.</li>
<li>Build and refine the gift card experience, from buying a card to redeeming it.</li>
<li>Develop the back-end that powers it: APIs, services, and data models.</li>
<li>Work on the partner side too, the B2B self-serve product and the embeddable widgets that let other companies plug Joy_ in.</li>
<li>Keep the codebase healthy, with shared components, design tokens, sensible tests, and an eye on performance and accessibility.</li>
</ul>
<h2>Requirements</h2>
<p><strong>What we're looking for</strong></p>
<p>We are not reading your CV for logos or degrees. Show us what you have built and shipped.</p>
<ul>
<li><strong>3+ years building modern web products, full-stack.</strong> Genuinely comfortable on both the front-end and the back-end.</li>
<li><strong>A deep sense of product ownership.</strong> You don't wait to be told what each step is. When you see a broken piece, you take it upon yourself to fix it. You ca
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