About the Role

Captura is seeking a highly skilled and experienced Membrane Development Technician to join our growing startup at a pivotal stage of development and scale up of the membrane technology. This is a unique opportunity to support quality control, membrane development, laboratory, and pilot scale up activities. The ideal candidate will have prior experience in polymers, material science, chemistry, chemical engineering, or a related technical field who enjoys working in the lab, understands technical processes, and can translate experimental results into clear documentation and actionable process improvements.

The successful candidate will contribute towards catalyst and membrane development including formulation, development, testing, characterization, and QC evaluation while maintaining strong laboratory organization, record keeping, and safe work practices. This position requires being comfortable working with chemicals, laboratory equipment, process materials, and appropriate personal protective equipment (PPE). They will take full ownership of critical projects in a fast-paced setting, playing a key role in preparing, executing and documenting experiments to evaluate membranes, and scale up while driving continuous improvements in both process performance and safety.

Responsibilities

Daily Laboratory Responsibilities

- Execute hands-on laboratory research and development activities focused on membrane casting, and process optimization for advancing Ion exchange membranes.
- Execute polymer production activities including synthesis of polymer, including polymer purification, washing and drying and polymer solution preparation to meet the target specifications at lab scale leading to pilot scale quantities.




- Design, execute, and document experimental protocols to evaluate polymer synthesis, and membrane casting tasks, to meet the product needs.
- Generate, collect, compile, analyze, interpret, and summarize experimental and process data utilizing statistical analysis tools and design of experiment (DOE) methodologies to support product development, root cause analysis, process validation, and continuous improvement initiatives.

Quality control and Testing

- Perform quality control (QC) and quality assurance (QA) testing of polymer solutions, membranes, and experimental lots using established analytical test methods, statistical process controls, and defined acceptance specifications.
- Collaborate in development and optimization of QC methods, inspection procedures, testing protocols, and process controls for polymers, casting solutions, membrane materials and related products.
- Monitor for process deviations, material issues, equipment concerns, or quality trends and communicate findings effectively to engineering, quality, and operations teams.

Laboratory operations and compliance, safety and management

- Operate, calibrate, and maintain laboratory equipment used for polymer synthesis, membrane casting, chemical processing, material characterization and performance evaluation.




- Maintain accurate and GMP/GLP compliant laboratory documentation, including batch records, test records, standard operating procedures (SOPs), work instructions, and technical reports.
- Comfortable working in the laboratory environment using solvents, chemicals and polymers adhering to established safety protocols and best practices.
- Adhere to all EHS requirements, chemical hygiene plans, and Personal Protective Equipment (PPE) requirements and secure handling procedures for hazardous chemicals, solvents, polymers, catalysts, laboratory equipment, and compressed gases.
- Maintain a safe, clean, and organized laboratory environment, including proper material labeling, storage, inventory management, waste disposal and handling, and housekeeping practices.

Qualifications

- Bachelor’s degree in chemical engineering, material science, polymer engineering, chemistry or related field.
- Minimum of 3years' experience particularly in membrane development, coatings, membrane casting and chemical formulations.
- Strong background working with polymers, membranes, catalyst, and solvents is highly desirable.
- Experience with analytical and characterization tools such as SEM, viscosity measurement, pH, conductivity, tensile testing or other material testing methods, and QC processes.
- Proficient in Microsoft suite, statistical tools, design of experiments (DOE), root cause analysis, process troubleshooting and continuous improvement projects.
- Excellent leadership, communication, and organizational skills.
- Demonstrated experience working with hazardous chemicals and implementing safety protocols.
- Ability to collaborate cross-functionally and cl

📌 Membrane Development Technician (Pasadena)
🏢 Captura
📍 Pasadena