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We are looking for:

The Polymer Sr. Additives Application Scientist (Polyolefin Stabilization & Formulations) will provide technical application leadership to develop, validate, and support polymer additive solutions for polyolefins, with deep expertise in functional additives and formulation development. Also the purpose of the role is to generate high-quality application data, translate customer needs into robust formulations, and support commercial growth across key segments including automotive, agriculture, building & construction, wire & cable, durable goods, and molding applications.

We count on you for:

Application & Formulation Development

• Design and optimize polyolefin stabilization packages (UV stabilizers, UV absorbers and antioxidants) for PP/PE and related resin systems.
• Able to formulate with complementary additives (e.g., pigments, flame retardants, slip/antiblock agents, fillers) to meet performance and regulatory requirements for targeted applications.
• Build "Cause and Effect" understanding linking additive chemistry, processing history, and end-use performance.

Polymer Processing & Sample Preparation

• Plan and execute polymer processing trials using extrusion (single/twin-screw), injection molding, compression molding, and related compounding/conversion methods.
• Define processing windows and assess effects of shear/temperature/oxygen exposure on stabilization performance (melt stability, color, odor, die build-up, etc.).

Testing, Characterization & Data Generation

• Lead accelerated weathering and durability evaluations (e.g., UV exposure, thermal aging), including test plan definition, controls, and interpretation.
• Conduct, analyze, and interpret test results. (e.g., MFR/MFI, DSC/OIT, TGA, tensile/impact/flexural, hardness, color/E, gloss, haze, density; as relevant).
• Develop statistically sound application datasets and technical documentation to support product positioning, claims, and customer trials.

Technical Support & Troubleshooting

• Provide expert technical support to internal teams and customers: troubleshoot formulation, processing, and performance issues; propose corrective actions and validate solutions.
• Troubleshoot and maintain key lab/testing instruments; coordinate repairs/calibration with vendors and internal resources as needed.

Cross-Functional Collaboration

• Partner with R&D, Product Management, Sales, Manufacturing, Quality, Regulatory, and Supply Chain to align on priorities, launch readiness, and customer support.
• Contribute to innovation pipelines by identifying unmet needs and proposing new additive concepts, test methods, or application platforms.

External Visibility & Knowledge Sharing

• Prepare and deliver technical presentations at customer meetings and industry conferences; contribute to papers/posters where appropriate.
• Capture competitive intelligence and market trends; share learnings internally to improve products and messaging.

You can count on us for:

• We offer the opportunity to join an exciting growth company
• A full range of benefits as expected of a successful company
• Opportunities for growth and learning
• Encouraging a diverse and inclusive workplace culture that values and respects individual differences and backgrounds

You will bring:

• PhD or MSc in Polymer Science, Chemistry, Chemical Engineering, Materials Science, or related field (or equivalent experience).
• 10+ years of experience in polymer additives application development, with strong focus on polyolefin stabilization and formulations.
• Demonstrated expertise in UV stabilizers/HALS, UV absorbers, antioxidants, including interactions and performance trade-offs (process vs. long-term stability).
• Solid knowledge of polyolefin end-use requirements in automotive, agriculture, building & construction, wire & cable, durable goods, and molding applications.
• Hands-on experience with polymer processing: extrusion, injection molding, compression molding (compounding/conversion experience strongly preferred).
• Experience with accelerated weathering and durability testing and interpreting failure modes.
• Competency in polymer characterization and physical testing; ability to design test plans and draw clear, defensible conclusions.
• Familiarity with additional additives: pigments, flame retardants, slip/antiblock agents, processing aids, etc.
• Strong communication skills: clear technical writing, data storytelling, and conference-level presentation capability.

Preferred Qualifications

• Experience with customer trial support and stage-gate development projects.
• Knowledge of relevant standards/methods (e.g., ISO/ASTM; weathering standards and durability requirements).
• Experience in instrument troubleshooting, method development, and lab safety/quality practices.

Key Competencies

• Experimental design and data rigor; practical problem-solving mindset
• Customer-oriented technical leadership and collaboration across functions
• Ability to translate chemistry into application performance and value propositions
• Strong organization and prioritization across multiple projects

You will get:

• Competitive salary and benefits package
• The U.S. annual base salary range reasonably expected to be paid for this new hire is: $112,000 to $140,000.  Actual compensation will be determined based on a variety of factors unique to each candidate, such as skills, experience, qualifications, etc. and can ultimately be more or less than the posted salary range. Total compensation for this role also includes bonus and/or other incentives.
• 16, or more, weeks of maternity/paternity and co-parenting leave, according to local regulations
• Training platform for all employees
• Free well-being sessions (physical and psychological)

About Us:

• Syensqo is a science company developing groundbreaking solutions that enhance the way we live, work, travel and play. Inspired by the scientific councils which Ernest Solvay initiated in 1911, we bring great minds together to push the limits of science and innovation for the benefit of our customers, with a diverse, global team of more than 13,000 associates. Our solutions contribute to safer, cleaner, and more sustainable products found in homes, food and consumer goods, planes, cars, batteries, smart devices and health care applications. Our innovation power enables us to deliver on the ambition of a circular economy and explore breakthrough technologies that advance humanity.
• At Syensqo, we seek to promote unity and not uniformity. We value the diversity that individuals bring and we invite you to consider a future with us, regardless of background, age, gender, national origin, ethnicity, religion, sexual orientation, ability or identity. We encourage individuals who may require any assistance or accommodations to let us know to ensure a seamless application experience. We are here to support you throughout the application journey and want to ensure all candidates are treated equally. If you are unsure whether you meet all the criteria or qualifications listed in the job description, we still encourage you to apply.
• Syensqo is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other legally protected characteristics.