Full-Stack Developer

Joy_

Full-Stack Developer creating AI-based gift card solutions at Joy_. Collaborate with teams to deliver polished front-end and back-end experiences and maintain code health.

Posted 7/13/2026full-timeRemote • 🇩🇪 GermanyMid-LevelSenior💰 €60,000 - €70,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack development, with a strong focus on building and refining web products, particularly in the areas of APIs, services, and data models. Possesses a deep sense of product ownership and a pragmatic approach to quality, ensuring a healthy codebase and exceptional user experiences.

Highest-signal resume keywords

Full-Stack DevelopmentAPI DevelopmentB2B Product ExperienceE-Commerce KnowledgeExcellent English Communication

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Web DevelopmentBack-End DevelopmentFront-End DevelopmentData ModelingCodebase ManagementDesign SystemsEvent AnalyticsPayments IntegrationLoyalty ProgramsWidget Development

Soft Skills

Team CollaborationAttention to DetailExecution MindsetProduct OwnershipPragmatic Quality Approach

Tools & Technologies

StorybookDesign TokensShared Components

Industry Keywords

E-CommerceGift Card ExperienceLoyalty and Rewards ProductsSelf-Serve Product

About the role

Key responsibilities & impact

Own features from discovery to production.
Build and refine the gift card experience, from buying a card to redeeming it.
Develop the back-end that powers it: APIs, services, and data models.
Work on the partner side too, the B2B self-serve product and embeddable widgets.
Keep the codebase healthy, with shared components, design tokens, and sensible tests.

Requirements

What you’ll need

3+ years building modern web products, full-stack.
Genuinely comfortable on both the front-end and the back-end.
A deep sense of product ownership.
An exceptional teammate.
An elite execution mindset.
A real eye for detail.
A pragmatic approach to quality.
Excellent spoken and written English. German is a plus, not a must.
Bonus points for: payments, e-commerce, or loyalty and rewards products; design systems or Storybook; experiments and event analytics.

Benefits

Comp & perks

Real responsibility. You work across the whole product and sit close to the founders every day.
Growth. Build on the frontier of AI commerce alongside senior operators and engineers who have scaled before.
Autonomy. Remote-first, with the freedom to work how you work best.
Meaningful equity. We want you to win with us.
Real impact. Watch what you build go live in front of a whole country. Fast.