Applied Scientist – Colloidal and Surface Chemistry

Haelixa is a pioneering company delivering a bulletproof DNA-based traceability solution to mark and trace products across global supply chains. From recycled fibres to luxury textiles and jewelry, we enable brands to verify origin and authenticity claims with a forensic science-backed approach. Our technology is trusted by leading global fashion, textile, and jewelry companies.

We are looking for a highly skilled Applied Scientist to join our fast-growing team. In this role, you will drive the development, optimization, and scale-up of our core technology, Haelixa’s DNA-based marker. Reporting directly to the CSO, you will play a central role in advancing our science into real-world applications and ensuring technical excellence in every stage of product development.

Location: Kemptthal, Switzerland
Start Date: As soon as possible or December 1st, 2025

Responsibilities

• Design and execute complex development projects in colloidal and surface chemistry, from concept through delivery.

• Develop, optimize, and scale up protocols for particle synthesis, surface modification, and product stabilization.

• Lead laboratory work on particle surface functionalization and product formulation.

• Characterize colloidal systems using advanced analytical and surface characterization methods.

• Translate laboratory-scale findings into scalable, reproducible production processes.

• Monitor, track, and report progress, risks, and deliverables directly to the CSO.

• Contribute to building a strong scientific culture while supporting the team in delivering outstanding products.

Your Profile

• PhD in Colloidal Chemistry, Surface Chemistry, Materials Science, Chemical Engineering, or a related field (or MSc & relevant experience)

• Proven expertise and hands-on experience in micro/nanoparticle synthesis, functionalization, and characterization.

• Solid understanding of colloidal stability, solution chemistry, and analytical techniques.
• Strong background in DNA chemistry and/or DNA-based nanoparticles is a plus.
• Demonstrated ability to independently design and execute complex experimental programs with high precision.
• Excellent organizational and project management skills, with a strong sense of ownership and accountability.
• Strong written and spoken communication skills in English.
• Passion for working in a start-up environment, with flexibility, energy, and drive.

What We Offer

• Great responsibility from day one; we value ownership and hold ourselves accountable for outcomes

• Alignment of objectives at company level; we set clear goals together and achieve them in a suitable and timely way

• Friendly and inclusive team spirit; we are optimistic and collaborative, our criticism is always constructive

• We believe that sports teach fairness, teamwork, discipline, perseverance, and respect. As a result, we offer a yearly sports subscription to all members.

• The offices are well-designed and located in a lively area between Zurich and Winterthur

• We arrange seasonal team events and achievement celebrations