Neurons - Senior Fullstack Engineer

About the Position

Neurons, a company revolutionizing how brands understand and engage with people, is seeking a Senior Full Stack Engineer to join their team in the Greater Copenhagen Area. This role is hybrid and focuses on building scalable AI-driven products at the intersection of neuroscience and marketing.

Responsibilities

• Design & Scale the Core Platform: Architect and build backend services that power Neurons’ predictive insights, ensuring they are fast, secure, and highly scalable.
• Deliver Features That Matter – Fast: Work closely with product and design teams to translate ideas into working software, from backend logic to frontend interfaces.
• Ensure Reliability, Quality, and Clean Code: Drive engineering excellence through clean, maintainable code, robust testing practices, and thoughtful architecture.
• Shape Product Direction With Your Expertise: Collaborate with cross-functional teams to influence the product roadmap and balance ideal architecture with practical business needs.
• Mentor and Multiply Your Impact: Build a strong engineering culture by mentoring junior developers and leading by example in code reviews.

Requirements

• ~5+ years of professional experience building and scaling web applications
• Proven expertise with Python (Django or FastAPI)
• Strong skills in TypeScript, React, and modern frontend architecture (React Query is a plus)
• Hands-on experience with distributed systems, asynchronous programming, domain-driven design, and event-driven architecture
• A history of delivering robust testing strategies and maintaining production-grade codebases
• Strong communication skills and a collaborative mindset; comfort working in cross-functional, Agile teams
• A curious mindset, with a strong interest in learning and understanding client problems to deliver value

We Offer

• Work on technology that merges AI, neuroscience, and marketing-solving problems few others are tackling
• Tackle complex engineering challenges with a team that values creativity, collaboration, and craftsmanship
• See your work deliver measurable impact for some of the world’s biggest brands

About the Company

Neurons fosters an inclusive culture where innovation flourishes. The company believes true progress comes from being yourself, sharing ideas freely, and collaborating with inspiring colleagues.

Innovation at the Core: With an 11-year legacy founded by neuroscientist and bestselling author Dr. Thomas Zoëga Ramsøy, Neurons continues to push boundaries through data, AI, and applied neuroscience.

Team Spirit and Culture: Collaboration, personal growth, and strong teamwork are central to building something extraordinary.

Results with Empathy: Neurons balances ambition with empathy, encouraging continuous feedback and measuring success not only in results, but also in relationships and positive impact.

Diverse and Inclusive: With 85 employees from 30 nations, Neurons celebrates diversity and is committed to creating a welcoming environment for all backgrounds.

At Neurons, the journey is as exciting as the destination-offering a career where innovation, teamwork, and meaningful results come together.

Benefits

• Employee health and well-being initiatives such as yoga, healthy breaks, and mental health resources
• Social connection through Friday Hygge activities (karaoke, bingo, video games, board games)
• In-house lunch
• Pension plan
• Private health insurance
• Parental leave benefits
• Quarterly company events
• Team events

Contact

For questions or additional information, please contact Peter Kold at [email protected] or +45 2989 0903.

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Location: Neurons Inc, Taastrup, DK

Remote status: Hybrid

Employment type: Full-time