At Lummus Technology, innovation thrives, and excellence is a shared pursuit. When you join Lummus, you are empowered to make an impact and be part of a dynamic team that celebrates creativity, encourages professional development, and fosters collaboration. From our technology portfolio to our global workforce, Lummus is growing at a rapid pace, and we hope that you will grow with us during this exciting time. Become part of Lummus Novolen Technology GmbH, the Lummus Technology Polymers Business Unit, where we develop, globally license and service a portfolio of polymer technologies such as the successful Novolen® PP (the 1 licensed polypropylene technology in recent years), EXCENE™ HDPE, Hyperlene™ LDPE/EVA and Saplene™ Superabsorbent Polymer technology. We also develop and provide polymerization catalysts for use in our processes and continuously develop new products to meet the latest market requirements. Lummus Technology is developing solutions to manage the transition to a sustainable refining, petrochemical and polymer industry, and this includes polymer recycling technologies, energy efficient production routes, and bio-based feedstock processes with zero or even net-negative CO2 emissions. Join us on this journey to a sustainable future! For Lummus Novolen Technology GmbH in Mannheim/ Germany we are looking for a Principal Polymer Process Engineer (m/f/d) - LDPE to join our Project Execution team particularly in the field of high-pressure parts for low density polyethylene (LDPE). Key Responsibilities / Proficient in engineering skills like: Design and review piping systems and equipment for pressures up to 3000 bar, including autoclaves, compressors, and high-pressure loops Apply in-depth knowledge of critical design figures for high-pressure components Demonstrate expertise in international standards and best practices for high-pressure piping design, including ASME B31.3, B31.1, PED, ISO, DIN and EN codes Develop and maintain piping class specifications and pipe material specification (PMS) sheets in accordance with ASME and in-house standards Review and assess vibration calculations and dynamic analysis for high-pressure piping and equipment Review and assess support systems for high-pressure lines to ensure mechanical integrity and operational safety Develop plant layouts considering blast loads, maintenance access, and operability Perform safety valve sizing and design of pressure relief systems in accordance with process safety requirements Lead the development and review of P&IDs for new installations and system modifications Lead piping engineering activities for high-pressure process units, ensuring alignment with project goals, safety standards, and client expectations Provide technical support during fabrication, installation, and commissioning phases Participate in start-up supervision, troubleshooting, and performance validation of highpressure systems Coordinate with multidisciplinary teams and serve as the primary interface for pipingrelated matters with internal and external stakeholders Maintain professional communication with in-house teams, clients, and vendors to ensure clarity and alignment on technical deliverables Skills, Knowledge and Expertise: Accredited engineering degree, preferred M.S. in Chemical or Process Engineering 5-8 years of detail process engineering experience in lead role and / or specialization Generally current on latest scientific and engineering methods Essential to have good understanding of polymer technologies Familiar with key equipment suppliers in the field of high pressure goods Knowledge in using CAE tools (SmartPlant, Comos, etc.) Ability to communicate effectively (verbal and written, internal and external) Very good English language skills (verbal and written); German language skills advantageous Willingness for short term assignments to worldwide locations Lummus Technology is the global leader in developing technology solutions that make modern life possible and focus on a more sustainable, low carbon future. We license process technologies in clean fuels, renewables, petrochemicals, polymers, gas processing and supply lifecycle services, catalysts, proprietary equipment and digitalization to customers worldwide.