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Title: Manager, Development Engineering Company Overview Treaty Oak Clean Energy, LLC (Treaty Oak) is a clean energy platform focused on developing, commercializing, building and operating utility-scale solar plus battery storage projects in targeted US energy markets. Our mission is to create a sustainable future by providing clean, low-cost energy solutions to the grid benefiting energy consumers, communities, and generations to come. Treaty Oak is a wholly-owned portfolio company of Macquarie Asset Management (Macquarie), pairing Treaty Oak’s renewables development expertise with Macquarie’s capital backing. Headquartered in Austin, Texas, Treaty Oak’s portfolio consists of 20 GW+ of in development and in construction utility scale renewable projects across the United States. Treaty Oak features an experienced management team with a track record of developing and commercializing 9 GW+ of utility-scale power projects and a collective 100+ years’ experience across critical competencies, including power markets, offtake structuring, design, engineering and real estate. The Role The Manager, Development Engineering is responsible for leading and managing technical engineering activities during the development, engineering, procurement, and pre-construction phases of utility-scale renewable energy projects, including solar photovoltaic (PV), battery energy storage systems (BESS), substations, transmission interconnections, and associated balance-of-plant infrastructure. This position serves as the primary technical representative for assigned projects and is responsible for coordinating multidisciplinary engineering efforts with internal stakeholders, engineering consultants, EPC contractors, utilities, Independent Engineers (IE), Owner's Engineers (OE), equipment manufacturers, permitting agencies, and regulatory authorities. The role requires advanced engineering judgment, technical leadership, and extensive knowledge of power systems, renewable energy project development, and utility interconnection requirements. The Manager, Development Engineering reports directly to the Senior Manager, Engineering and plays a critical role in ensuring projects progress from early development through construction with technically sound, commercially optimized, and schedule-driven engineering solutions. Key Responsibilities Technical Leadership Lead the engineering development of utility-scale solar PV, battery energy storage (BESS), substation, transmission line, and interconnection facilities. Provide technical leadership throughout project development, detailed engineering, procurement, construction support, commissioning, and project closeout. Evaluate engineering alternatives to optimize project cost, constructability, reliability, operability, maintainability, and long-term asset performance. Develop engineering execution strategies aligned with overall project development objectives. Engineering Management Manage multiple engineering consultants including Electrical Engineers of Record (EOR), Civil Engineers, Geotechnical Engineers, Surveyors, Environmental Consultants, Transmission Engineers, and Owner's Engineers. Direct engineering deliverables through all project milestones including conceptual design, 10%, 30%, 60%, 90%, Issued for Construction (IFC), and Record Drawing phases. Review engineering calculations, design reports, technical specifications, construction drawings, studies, and engineering documentation for technical accuracy and compliance. Coordinate multidisciplinary engineering reviews across civil, structural, electrical, mechanical, controls, telecommunications, and SCADA disciplines. Interconnection & Utility Coordination Lead technical coordination with electric utilities, Independent System Operators (ISO), Regional Transmiss