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General information

Process Developer
Process Development is a department within the R&D unit, which focuses on the development of manufacturing processes of allergen preparations for therapeutic and diagnostic use. The department is composed of expertise teams working on the process development for HAL Allergy’s existing products, new product candidates and/or on enabling technologies such as formulation and freeze-drying. The Developer is responsible for the development and optimization of manufacture processes for a specified product line. The Developer will be involved in technology transfer of the production process to GMP operations.
Tasks and Responsibilities


  • Development and optimization of the manufacture processes for specified products;
  • Identify critical process parameters of production processes;
  • Tech-transfer of new or improved manufacturing processes to Operations;
  • Contribute to trouble-shooting with respect to production processes, and initiate improvements.
  • Deliver high-quality of the work and make sure that new and improved manufacturing processes comply with relevant regulatory guidelines (e.g., GMP).
  • Report experimental results



  • BSc degree in natural sciences, bio-processing or food technology (or equivalent)
  • A minimum of three years relevant experience
  • Experience with separation technology including extraction, chromatography and tangential flow filtration.
  • Experience with tech transfer from development to GMP production
Personal & Professional Skills
  • Accurate
  • Team player
  • Reporting
  • Communicative
  • Flexible

Key competencies:

  • Critical thinking and problem solving
  • Goal oriented and result-driven
  • Ownership
  • Creative
  • We offer you a highly dynamic job in an interesting environment.
  • You will be working from our headquarters in Leiden, where the products are produced on site.
  • HAL Allergy offers great benefits including a competitive salary, 13th month, 30 holidays, contribution to pension and health insurance.
Applications and more information
Interested? We look forward to receiving your application. To apply, please click the "Apply" button below to the right where you will be prompted to upload your CV first. 
Company Information

HAL Allergy is a modern leader in the field of biopharmaceuticals, located in the Leiden Bio Science Park in The Netherlands. Our core business is the development and manufacturing of therapies and diagnostics for allergic diseases.


With offices in major European countries, HAL Allergy is one of the European top players in the allergy immunotherapy business. Established in 1959 HAL Allergy has a long experience in developing, producing and selling allergy therapies with an immuno-modulatory effect, resulting in a reduction of symptoms and long-term disease suppression. These therapies are primarily used against common allergies such as hay fever, house dust mites allergy and allergic reactions towards wasp or bee stings.


We employ around 300 highly specialized people across various functions. The departments at our headquarters include Research & Development, Production, Quality Assurance, Clinical Development and Regulatory Affairs. Our staff works closely together with leading research institutes. At our locations in Germany, Poland, Austria, Spain and Italy we mainly focus on service and sales activities.


We are a steadily growing and dynamic company with a culture that is characterized by entrepreneurial spirit and a friendly and helpful atmosphere. The patient’s well-being is always our top priority. This combination is the basis for an interesting and challenging environment.


In addition to the core business of HAL Allergy, our subsidiary HALIX was founded in 2012. HALIX is a contract development and manufacturing organization (CDMO) licensed for the contract manufacturing of clinical and commercial medicines according to GMP standards. As an end‑to‑end service provider, HALIX will serve its customers the full range from the first development steps to start of commercial production after successful registration of products.