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We are looking for a

Full Stack Lead Developer with AI Focus

About Us

At Buy2Sell, we develop innovative solutions for e-commerce and product evaluation. We’re building a new platform where AI will
play a central role — including automatic pricing, condition assessment via 3D
images, and machine learning-based analysis of product data.

Your Responsibilities

  • Develop web applications using modern frontend technologies like
    React or Vue.js
  • Backend development with Node.js or Python
  • Integrate AI models for pricing, image analysis, and recommendation
    systems
  • Deploy via cloud platforms such as AWS, Azure, or similar
  • Collaborate with designers and AI specialists to ensure an optimal
    user experience

What You’ll Be Doing

Use AI to aggressively ship high-quality code. We
expect you to stay on top of the latest tools, models, and trends in
AI-assisted software engineering. Using AI is no longer optional.

We expect you to be excellent at prompting, know when to leverage different
models, and have hands-on experience with Claude Code, Cursor, and opencode,
among others.

At the same time, we expect you to know when not to use LLMs and instead
debug or design an algorithm manually.

We Expect You To

  • Have experience with both frontend and backend development
  • Have worked with AI tools and ML frameworks
  • Be familiar with Git and CI/CD workflows
  • Have a strong interest in innovation and technological development
  • Speak and write fluent Danish and English

We Offer

  • A creative and informal work environment
  • Opportunities to work with cutting-edge AI solutions
  • Social events and a strong team culture

This Role Is For You If

  • Software is your hobby. You’ve built apps for personal use or
    explored side projects to learn new tech
  • You love styling buttons in the morning, adjusting the database
    schema at noon, and deploying to production in the afternoon — you’ll
    thrive here
  • You value speed and pragmatism. You know how to prioritize and cut
    the right 5% of a feature to simplify implementation by 100x
  • You take security seriously, without blindly relying on modern
    frameworks
  • You write fast software. From optimizing SQL queries to reducing
    frontend reflows and choosing the right number of threads — you’re always
    looking for ways to keep applications fast
  • You’re a generalist. You don’t need to be an expert in every area of
    software development, but you’re comfortable wearing multiple hats and
    learning quickly

Application

Upload your application and CV no later than December 12, 2025 on this fomr below.

Interviews are expected to take place in week 3.

If you have questions about the position, feel free to contact us at info@buy2sell.dk

Career at Buy2Sell

Join a fast-growing team in Sønderborg that’s redefining circular economy and automation

At Buy2Sell, we believe in creating meaningful work experiences where innovation, collaboration, and diversity thrive. Whether you're a student looking for hands-on learning or a seasoned professional seeking your next challenge, we offer flexible roles across departments like electronics, mechanics, customer support, and logistics.

🌱 Why Work With Us?
  • Freedom to Innovate: We’re a young company with room to grow. Many of our processes are still evolving, which means you can help shape them.
  • Inclusive Culture: We value diversity and strive to create jobs for everyone. Our team includes people from various backgrounds working together to build something great.
  • Real Impact: From listing and testing products to packing and shipping worldwide, every role contributes directly to our success.

You can also visit our Meet the Team page to learn more about who we are.