Senior Engineer

Company Description Founded in 2018 and based in the United States in Minneapolis, Minnesota, Claros Technologies is a global leader in PFAS mitigation, with two core divisions. The ClarosTech™ division focuses exclusively on the permanent destruction of PFAS, offering affordable, high-flow, scalable, and field-ready systems that destroy long, short, and ultra-short chain PFAS compounds. ClarosLabs™, the company's ISO/IEC 17025:2017 accredited analytical division, is a leading commercial laboratory dedicated solely to PFAS detection, quantification, and exposure assessment. We are a diverse team of scientists, engineers, business builders, and impact-driven leaders dedicated to solving critical environmental problems. In 2026, Claros closed a $55 million financing round, positioning us to fulfill commercial adoption and expand globally. If you're a mission-driven and highly motivated individual looking to solve problems without creating new ones, join our team in accomplishing our mission to take the ‘forever’ out of “forever chemicals” and destroy PFAS for good. Job Summary The Senior Engineer is responsible for leading the engineering projects and strategic activities that support the commercialization and scale-up of Claros' PFAS destruction technology. This role also serves as the bridge between Research & Development (R&D), product development, our pilot and applications teams, and commercial growth - ensuring Claros delivers scalable, cost-effective, and market-ready solutions. Working closely with teams from Engineering, Operations, and R&D, this leader will drive the transition of emerging technologies into commercial systems, establish engineering standards and processes, and build a high-performing engineering organization focused on growth, innovation, and customer success. Key Responsibilities Engineering Leadership Support customer projects at pilot and commercial scale Manage engineering priorities, resources, and budgets to achieve company objectives and commercialization milestones. Coordinate external engineering firms, consultants, and technical partners as needed. Lead vendor, fabricator, and equipment supplier relationships to meet business needs. Engineering Resource Development Support engineering efforts to transition PFAS destruction technologies from pilot-proven concepts into scalable commercial products. Develop standardized system designs, technical specifications, and product platforms that support repeatable and efficient deployment across markets. Drive product improvements related to performance, reliability, manufacturability, energy efficiency, and cost reduction. Establish engineering best practices, design standards, and quality processes that support long-term growth and scalability. Cross-Functional Leadership Collaborate with the Research & Development (R&D) team to translate scientific advancements and emerging technologies into commercially…