Backend Developer (Data platform)
Do you want to be a part of a fast-moving start-up with highly driven team members? Are you excited about designing, building, and maintaining reliable, scalable, and high-performance data infrastructure? If so, Hakio sure sounds like a place for you!

Send your resume to techcareers@hakio.com
Why we're here
At Hakio, we combat global waste in logistics, production, and consumption of fashion – and our weapon of choice is data. We build advanced forecasting models and a platform that, when combined, help brands like Hummel, Carhartt, and Organic Basics make better, faster, and more accurate decisions. This reduces overproduction and avoids lost sales due to poor stock visibility.
It’s good for business, and great for the planet.
And we’re a startup, meaning we’re always evolving. We think change is exciting - it keeps us on our toes. While some of us love sticking to a good plan more than others, a common trait is that we’re not afraid to shake things up when we learn something new.
Let's talk about you!
Problems excite you, and the more complex, the better. You’re all about practical solutions that actually work, and you’re intuitively great at navigating your way through chaos.
You think clearly and confidently, explaining complex issues in a simple manner. That’s your strength. You’re the kind of person who doesn’t just solve problems alone, you help others see them clearly and enjoy working out the solution together.
And last but not least, you have a “focus mode” you turn on when you need to dig deep into something complex and deliver without distractions.
Your responsibilities:
Your teammates trust you because taking ownership and following through come naturally to you. At Hakio, you’ll be motivated by responsibility to:
- Develop and maintain our data ingestion pipeline in collaboration with the team, from integrations with external systems until it reaches our core application.
- Help onboarding customers with large amounts of data by collaborating with them to match their data with our ingestion setup.
- Ensure the code can be deployed on our infrastructure across multiple environments with optimal performance and scalability.
You'll thrive here if you have:
- Experience building, deploying, and maintaining a backend handling large amounts of data with a focus on scalability.
- Strong proficiency in Python and SQL.
- Hands-on experience with tools like BigQuery, Redshift, Synapse, or similar.
- Great communication and collaboration skills - you enjoy talking your way to solutions with sharp teammates.
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Our Tech Stack
Frontend:
- React (Typescript)
- Vite
- TailwindCSS
- tRPC
Backend:
- Python
- BigQuery
- Postgres
- Auth0
Infrastructure:
- GCP (BigQuery, Cloud Run, Cloud Run Functions)
- Terraform
- Github Actions
- Docker
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We offer
- Be a part of a cross-functional team with experienced developers, data scientists, and designers, where learning and personal development are highly valued.
- A culture built on continuous integration and deployment, ensuring that our solutions are scalable, reliable, and always improving.
- A culture of continuous learning and curiosity, regardless of seniority, where we grow and celebrate wins together.
- Ability to work in a hybrid setup (not fully remote) with a base in our HQ in Aarhus N or our upcoming office in Copenhagen.
- Join an established start-up backed by reputable investors who share our long-term vision.
- Team events, health insurance, incredible lunch, snacks, and more.
If you don’t tick all the boxes, we’d love to hear why you’d be a great fit anyway. Like the people we hope to hire, we’re eager to learn from new perspectives, backgrounds, and experiences.
Apply by sending your resume and cover letter to techcareers@hakio.com. Interviews will be held on an ongoing basis. We look forward to hearing from you!
Interested in working with us?
Whether your career path to a role you’re interested in is traditional or not, please apply. We want to hear from all enthusiastic candidates.
Please add the title/team you are applying for in the subject line of your email, so the right person on our team will read it.