Full Stack Developer, AI Solutions

Bestseller Textilhandels GmbH; Brande; On-site; DKK 520,000 - 860,000; Full time

Job summary

Bestseller Brande in Denmark is seeking a Full Stack Developer to build and test AI-enabled solutions that move from experiments to production. You will work across ONLY Brand House and Brand Tech, turning business needs into practical software.

You’ll collaborate with business and technical teams, design and implement frontend and backend AI features, and stay current with AI developments to scale solutions.

Qualifications

• Strong full stack development capabilities across frontend and backend.
• Practical knowledge of modern AI technologies, including generative models, RAG and agentic frameworks.
• Familiarity with automation platforms such as Zapier, n8n and Microsoft Power Automate.
• Skills within API design, MCP, microservices, integrations and cloud-based environments.
• The ability to collaborate with non-technical colleagues and share knowledge across different areas of expertise.

Responsibilities

• Partner with subject matter experts across the business to identify opportunities for AI and automation.
• Run time-boxed pilot projects to explore potential and test assumptions.
• Ideate, design and build AI solutions for specific business use cases.
• Take the lead on AI practices within the developer team and help colleagues make the most of new tools and techniques.
• Stay on top of developments within AI, from technology and data to what it takes to scale solutions successfully.

Skills

Vue

PrimeVue

ExpressJS

Node.js

LLMs/RLMs

RAG

Agentic frameworks

API design

Microservices

Cloud environments

Collaboration

Tools

Zapier

n8n

Power Automate

Job description

Do you want to build AI solutions that move beyond experiments and into everyday use? Are you curious enough to test, challenge and learn as you go? And do you enjoy working directly with the people who will actually use what you build?

Then join us and put your development skills and curiosity for AI into play, building solutions that create value across ONLY Brand House.

YOUR TEAM

You’ll work across ONLY Brand House and Brand Tech, connecting business needs with digital possibilities. By working closely with both sides, you’ll get a strong understanding of the challenges we want to solve and the technology that can help us solve them. You’ll be part of a skilled product team built on trust, autonomy, ownership and continuous improvement. Your time will be split evenly between ONLY Brand House and Brand Tech, putting you close to both the business and the developers building the solutions that support it.

YOUR ROLE

As our Full Stack Developer, you’ll build, test, break and learn. You’ll spot opportunities where AI and automation can make a real difference, prototype quickly and turn the best ideas into solutions that work in practice.

Your key responsibilities include:

• Partnering with subject matter experts across the business to identify opportunities for AI and automation
• Running time-boxed pilot projects to explore potential and test assumptions
• Ideating, designing and building AI solutions for specific business use cases
• Taking the lead on AI practices within the developer team and helping colleagues make the most of new tools and techniques
• Staying on top of developments within AI, from technology and data to what it takes to scale solutions successfully.

YOUR BENEFITS

You’ll join a role with plenty of room to explore, learn and influence how AI is put into practice. You’ll get the autonomy to test new approaches while being part of a skilled product team where your expertise can grow along with the technology. Look forward to:

• Room to experiment, testing new AI technologies and approaches and learning from what works
• Growing your expertise within AI engineering, agentic systems and modern software architecture
• Making an impact beyond your own solutions, sharing your knowledge and helping strengthen how we work with AI across ONLYand BESTSELLER.

YOUR PROFILE

You don’t need 10 years of experience. You might have it, or you might be fresh out of school and already experimenting with AI, building things and testing what the technology can do.What matters is that you know how to develop, you’re genuinely curious about AI and enjoy learning together with others.

We’re looking for someone with:

• Strong full stack development capabilities across frontend and backend, using Vue, PrimeVue, ExpressJS and Node.js
• Practical knowledge of modern AI technologies, including generative models (LLMs/LRMs), RAG and agentic frameworks
• Familiarity with automation platforms such as Zapier, n8n and Microsoft Power Automate
• Skills within API design, MCP, microservices, integrations and cloud-based environments
• The ability to collaborate with non-technical colleagues and share knowledge across different areas of expertise

WORKPLACE

Brande, Denmark. Please note that the position is on-site.

ABOUT BESTSELLER

At BESTSELLER, we are more than 20,000 people in 38 different countries working for over 20 fashion brands such as JACK & JONES, SELECTED, VERO MODA, ONLY, PIECES, VILA, OBJECT, MAMALICIOUS, NAME IT, NOISY MAY and Y.A.S. We are a family-owned company with a strong foundation and values to build on, empowering us to pursue the ideas we believe in to take BESTSELLER forward. We are committed to diversity and provide equal opportunities for everyone, irrespective of sex, race, ethnicity, religion or belief, disability, age, sexual orientation or gender identity. We strive to create an empowering environment where people can thrive and develop. For more information, visit www.bestseller.com.

You will become part of the BESTSELLER family, a culture where new ideas are welcomed, and all voices are heard. We believe in entrepreneurship; this means you have the freedom to do this in the way which works for you. You get responsibility and the opportunity to develop yourself and your area from day one. We believe in flexibility and autonomy in your daily routine and working location.

At BESTSELLER, we own it. Every chance. Every challenge. Every choice. We’re the global fashion company that’s fast paced and family run. We’re the business that’s built some of the strongest brands in the industry. By empowering every individual to own their journey, we’ve found the courage to keep getting better. To act more sustainably. To foster diversity and provide equal opportunities. To compete more confidently. And to keep challenging the status quo. Time and time again. We are BESTSELLER - and together, we own it.

Apply by 2 October 2026.