Job Title

Senior Manager – System Design & Costing (BESS) Location: Mumbai Reporting To: Pre-sales - Lead (BESS) About the Company Waaree is expanding its Battery Energy Storage Systems (BESS) business across utility-scale and commercial & industrial segments. As BESS projects scale in size and complexity, accurate system design, technical configuration, and cost modelling for the entire BESS project is critical for winning bids and protecting margins. About the Role The Senior Manager – System Design & Costing (BESS) will own end-to-end system architecture, technical configuration, and cost modelling for BESS projects, covering battery systems, PCS, balance-of-system design & equipment. This role acts as the single owner of technical and cost assumptions during the bid and proposal stage, ensuring that solutions offered are technically compliant, commercially accurate, and executable. Responsibilities System Design & Architecture Define overall system architecture for BESS projects across utility-scale and C&I applications Finalise technical configuration covering: Battery containers / racks PCS selection and sizing Transformers, switchgear, protection systems, metering, and auxiliary systems up to the POI Own sizing philosophy, design assumptions, and technical compliance for bids Review and approve SLDs, layouts, and system-level design documentation Costing & Commercial Support Own complete project-level cost models covering: BESS equipment and auxiliaries Electrical systems and infrastructure from PCS up to the POI Installation, testing, commissioning, logistics, duties, and contingencies Prepare and validate BOMs, cost sheets, and pricing inputs for bids Work closely with sourcing and procurement teams to validate vendor pricing Support sales teams with margin analysis and sensitivity scenarios Standardisation & Value Engineering Develop standard system configurations and reference designs for faster bid turnaround Drive value engineering initiatives to optimise system cost while meeting performance and safety requirements Create cost benchmarks for different project sizes, grid conditions, and use cases Bid Review & Risk Management Participate in bid review meetings to validate technical and cost assumptions Identify key technical, execution, and commercial risks related to design and POI integration Provide recommendations on risk mitigation and pricing strategy Cross-Functional Coordination Work closely with pre-sales, sales, sourcing, and project execution teams Ensure smooth technical handover from bid stage to execution Support execution teams during early project stages to maintain design intent and cost assumptions Knowledge Management & Team Development Build internal capability in BESS system design and costing Mentor junior engineers and pre-sales team members Develop internal design standards, costing templates, and technical playbook Qualifications Bachelor’s degree in Electrical / Power / Energy Engineering (Master’s preferred) 8–12 years of experience in power systems, renewables, or energy infrastructure At least 3–5 years of direct experience in BESS system design, solution engineering, or pre-sales Strong exposure to system integration and costing up to the Point of Injection Required Skills BESS system architecture and operating philosophy Battery technologies (LFP / NMC), degradation, and lifecycle modelling PCS characteristics and system limits Electrical systems, protection philosophy, and grid interconnection up to POI Applicable standards, certifications, and grid requirements Preferred Skills Experience with project management tools and methodologies Strong analytical and problem-solving skills Excellent communication and interpersonal skills