Company: Walter Bushnell Research & Development Center Pvt. Ltd. Job Title: Chemical Process Engineer -API R&D;

Location:
Kolkata Department: Research & Development (API) Reporting To: R&D; Manager / Head Process Development Employment Type: Full time Role Overview We are seeking a skilled and motivated Chemical Engineer to join our API R&D; team. The role involves developing and optimizing chemical processes, ensuring scalability, safety, and efficiency, and supporting seamless technology transfer to manufacturing.

Key Responsibilities

- Develop and optimize synthetic processes for Active Pharmaceutical Ingredients (APIs) at lab and kilo scale in collaboration with chemists and process scientists.
- Design and execute experiments using Design of Experiments (DoE) and conduct reaction engineering studies for critical unit operations.
- Assess process scalability, safety, and sustainability to enable efficient technology transfer to manufacturing plants.
- Perform material and energy balances, process simulations, and equipment sizing.
- Prepare and maintain comprehensive process documentation, including PFDs, P&IDs;, risk assessments, scale-up reports, and technology transfer dossiers.




- Conduct and participate in process hazard analysis (PHA), HAZOP studies, and safety evaluations.
- Troubleshoot issues related to scale-up and manufacturing in coordination with production teams.
- Support preparation of regulatory documentation, including DMFs and QbD filings.
- Collaborate with cross-functional teams such as Analytical R&D;, Quality Assurance, and EHS.
- Stay updated with and apply modern API manufacturing technologies such as flow chemistry, continuous processing, and photochemistry. Qualifications & Experience
- Bachelors or Masters degree in Chemical Engineering (B.
E./B.
Tech or M.
E./M.
Tech).
- 58 years of experience in API process development or pharmaceutical R&D.;
- Strong knowledge of chemical reaction engineering, kinetics, and unit operations.
- Familiarity with cGMP, ICH guidelines, QbD principles, and regulatory requirements for APIs.
- Hands-on experience with lab-scale and kilo-lab equipment (reactors, filtration, drying systems).
- Experience with process simulation tools such as Aspen Plus, ChemCAD, or equivalent is preferred.

📌 Chemical Process Engineer (Kolkata)
🏢 Walter Bushnell
📍 Kolkata