At Nokia Optical Networks, advanced photonic technologies become scalable products powering the world's communication infrastructure. Our team develops and manufactures cutting-edge Indium Phosphide (InP) photonic integrated circuits (PICs), enabling coherent optics, high-speed transceivers, tunable lasers, optical amplifiers, and next-generation networking solutions. As a Staff Wet Etch Process Engineer, you will develop, integrate, and optimize wet etch and wet clean processes used in the fabrication of advanced photonic devices. You will work hands-on with wet processing equipment, chemical delivery systems, consumables, and metrology systems to improve dimensional control, selectivity, surface morphology, contamination performance, yield, and manufacturability. • Develop, qualify, and sustain wet etch and wet clean processes for InP photonic integrated circuits and related optical devices. • Optimize etch rate, selectivity, undercut control, surface roughness, uniformity, contamination control, and yield. • Support fabrication of optical structures such as waveguides, SOAs, lasers, modulators, and passive optical components. • Drive defect reduction and yield improvement using DOE, SPC, and statistical analysis. • Analyze processes from a first-principles, physics-based approach to understand and manipulate mechanisms, not just recipes • Provide rapid response and technical leadership for process excursions and production issues. • Support a 24x7 manufacturing operation through on-call/on-site support and issue escalation. • Demonstrates flexibility in work schedule and is willing to work swing shifts based on business requirements. • Drive next-generation wet chemistry formulations and process development • Leverage AI and advanced analytics to improve process efficiency and decision making. • MS or PhD in relevant engineering or science discipline. • 5+ years semiconductor, photonics, or process engineering experience. • Strong understanding of wet processing, surface chemistry, contamination control, DOE, and SPC. • Strong ownership mindset and ability to independently drive projects and deliver results. • Ability to prioritize and respond quickly to manufacturing challenges. Preferred Qualifications • Experience with semiconductor wet benches and automated wet processing equipment. • Experience processing InP, GaAs, SiN, silicon photonics, or III-V technologies. • Passion for manufacturing excellence and continuous improvement. • Proven ability to thrive in a fast-paced fab environment balancing production and development priorities.