Full-Stack Developer (m/f/d) | JobSetuu

Description

Job Overview

• Source: Arbeitnow
• Location: Berlin
• Job Type: Full-Time

Job Description

What we do

Imagine every product on the internet, instantly available to you. You could take anything from any online shop, resell it, and earn from it. You could spend your Payback points or miles on something you actually want, instead of another forgettable knife set. And your AI could buy any product in the world for you, without your intervention.

We built exactly that. It's live, and it's running today.

Joy_'s AI infrastructure runs the entire e-commerce value chain end to end: sourcing, checkout, payment, fulfillment, customer care, and returns. Across any online shop on the planet. No merchant contracts, no closed networks. This is our Universal Purchasing Infrastructure, and it sits right at the center of where AI commerce is going.

On top of it, we build our own business models. The first one live and proven: the gift card. 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.

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.

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.

Tasks

The role

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:

• 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.
• 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 the embeddable widgets that let other companies plug Joy_ in.
• Keep the codebase healthy, with shared components, design tokens, sensible tests, and an eye on performance and accessibility.

Requirements

What we're looking for

We are not reading your CV for logos or degrees. Show us what you have built and shipped.

• 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. 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 care about the product actually working, not just clearing backlog tickets.
• An exceptional teammate. We are a small, tight-knit team. We win together. That means you are someone who proactively communicates, communicates clearly in a remote async environment, enjoys code reviews as a tool for teaching and learning, and leaves your ego at the door.
• An elite execution mindset. You use modern tools (like AI terminal agents) to strip away boilerplate and focus your brainpower on architecture, security, and user delight.
• A real eye for detail. You care deeply about typography, layout, and motion. You can comfortably navigate Figma to extract design intent, tokens, and variables to build polished, pixel-perfect user experiences.
• You think in systems. Data models, API design, and performance are things you weigh up rather than work around.
• A pragmatic approach to quality. Unit and e2e tests where they earn their keep, with steady attention to performance and accessibility.
• 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.

Our stack

This is the stack you'll work in, in rough order of priority. The essentials come first. The rest is a plus, and we're happy for you to grow into it with us.

Core application development

• TypeScript, the backbone of everything we build.

• Vue.js on the front-end.

• PostgreSQL: relational database design, query optimization, and data modelling.

• Nice to haves (or a strong curiosity to learn):

• Effect-TS for robust error handling and concurrency in TypeScript

• Nuxt.js

AI & Developer Workflows

• Git: For clean version control, branch management, collaborative PR reviews, and team tracking.
• Claude Code & Terminal Agents: We actively encourage using terminal-based AI workflows to navigate, refactor, and write boilerplate code.
• Figma MCP (Model Context Protocol): We utilize MCP servers to bridge our codebase directly with Figma variables, tokens, and layouts for tight design-to-code compilation.

Cloud and infrastructure (Nice to have)

• AWS & Kubernetes: For hosting our containerized services.
• Prometheus & OpenTelemetry: For distributed tracing, monitoring, and alerting across complex system behaviors.

Benefits

How we think

We think like caring jesters: joyful, kind, clever. We challenge the status quo by staying light on our feet and bold in our ambition. Our compass:

Aesthetics. Efficiency. Joy.

We believe great products come from delight, design, and a little magic, and that the most ambitious technology in the world should still feel human.

What's in it for you

• 🌱 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.

Interested?

If this feels like your kind of joyride, we'd love to hear from you. Apply through the form below and attach your GitHub or portfolio, or live product links. No formal cover letter needed.

One question, and it is the only one we ask:

Point us to a product you worked on end to end, front-end and back-end. What state was it in when you started, what did you change, and how did you know it worked?

At Joy_, everyone is welcome. We build with kindness, creativity, and curiosity. What counts is your energy and perspective, not your CV or where you studied. Let's create something joyful together.

Find more English Speaking Jobs in Germany on Arbeitnow

Expert Career Tips for Full-Stack Developer (m/f/d) Roles

To succeed in a competitive market as a Full-Stack Developer (m/f/d), you need more than just technical skills. Here are some expert strategies to elevate your profile:

• Build a Strong Portfolio: For technical roles, a clean GitHub or a personal project site is essential. For non-technical roles, a case study portfolio demonstrating problem-solving and impact is equally valuable. Show, don't just tell, what you have achieved in your previous positions.
• Master the Narrative: When interviewing, use the STAR method (Situation, Task, Action, Result) to structure your answers. Quantify your results wherever possible—mentioning "increased efficiency by 20%" is much more impactful than saying "improved efficiency."
• Continuous Learning: The industry moves fast. Whether it's staying updated with the latest AI tools or mastering a new management methodology, continuous professional development is key. Consider obtaining industry-recognized certifications that align with Full-Stack Developer (m/f/d) requirements.
• Networking: Connect with other professionals in similar roles. Join online communities, attend webinars, and engage in meaningful discussions on professional social networks. Often, the best opportunities come through referrals and community engagement.
• Soft Skills Matter: Communication, empathy, and leadership are often the deciding factors between two equally qualified technical candidates. Cultivate these skills as they are universally valued across all industries and seniority levels.

Additionally, research the specific company's culture and values. Tailoring your application to show how you align with their mission can significantly increase your chances of moving forward in the process.

Salary & Compensation

Salary not disclosed; typically competitive for the role.

Work Arrangement

Type: On-Site

Standard business hours at the office.

Comprehensive Application Strategy & Hiring Process

Applying for a new role is a marathon, not a sprint. Follow this strategic approach to maximize your success rate:

1. Initial Research & Tailoring

Don't send the same resume to every employer. Spend at least 30 minutes researching the company. Look for recent news, their product roadmap, and their team structure. Modify your summary and core competencies to reflect the specific keywords found in the job description.

2. The Perfect Cover Letter

If the application allows for a cover letter, use it to tell a story that your resume cannot. Explain why you are passionate about this specific company and how your unique background makes you the perfect fit for the challenges they are currently facing.

3. Navigating the Multi-Stage Interview

Most modern hiring processes involve 3-5 stages. This typically includes a recruiter screen, a technical or skill-based assessment, a peer interview, and a final leadership round. Prepare for each stage differently: focus on enthusiasm and fit for the recruiter, technical depth for the assessment, and strategic vision for the leadership round.

4. Post-Interview Follow-Up

Always send a personalized thank-you note within 24 hours of each interview. Reference a specific topic discussed during the call to demonstrate your active listening and genuine interest in the role.

By following these steps, you demonstrate a high level of professionalism and attention to detail that sets you apart from the average applicant.

Typical Interview Process

1. Resume screening
2. HR call
3. Skill interview
4. Final manager interview
5. Offer

Tip: Research the company's products and culture.

Global Market Intelligence & Relocation Insights

At JobSetuu, we specialize in helping talent navigate the global job market. Here is what you need to know about the current landscape in Berlin and beyond:

The demand for skilled professionals is increasingly borderless. For roles based in Berlin, understanding the local cost of living, visa requirements (if applicable), and cultural nuances is vital. If this is a remote role, consider the time zone alignment and the asynchronous communication culture of the hiring organization.

Relocation Support: Many forward-thinking companies offer relocation packages that include moving stipends, temporary housing, and legal assistance with work permits. When evaluating an offer, look beyond the base salary—consider the total compensation package, including equity, bonuses, and healthcare benefits.

Work-Life Balance Trends: Hybrid and remote work have become standard in many regions. Research the local labor laws and common practices regarding work hours and vacation time to ensure the role aligns with your lifestyle goals.

Leveraging JobSetuu's tools can help you compare salaries across different cities and understand the "purchasing power" of your potential offer, ensuring you make an informed decision for your long-term career path.

Skills & Competency Roadmap for Professional Development

To remain competitive in Professional Development, we recommend focusing on the following core competencies over the next 12-18 months:

• Technical Mastery: Deepen your expertise in the core tools and languages relevant to your field. For developers, this might be cloud architecture; for marketers, it might be data-driven attribution modeling.
• AI Augmentation: Learn how to leverage generative AI and automation tools to increase your productivity. Understanding how to integrate these technologies into your workflow is becoming a non-negotiable skill.
• Leadership & Strategy: Even in individual contributor roles, the ability to think strategically and lead projects from inception to completion is highly valued. Focus on stakeholder management and high-level project planning.
• Data Literacy: The ability to interpret data and use it to drive decisions is essential across all business functions. Familiarize yourself with data visualization and basic analytical concepts.

By investing in these areas, you not only prepare yourself for the role you are applying for today but also build a resilient foundation for the opportunities of tomorrow.

Apply via JobSetuu

Discover your next career milestone on JobSetuu. This Full-Stack Developer (m/f/d) position is part of our commitment to bringing you the most relevant and high-impact job openings globally. At JobSetuu, we simplify your job search by aggregating premier listings and providing the tools you need to stand out. Don't miss the chance to elevate your professional journey—explore more opportunities and career insights on our platform today.