Lead Mechanical Engineer

Company Description Sisir Radar Private Limited is building India’s first drone-borne Synthetic Aperture Radar (SAR), delivering the world’s highest-resolution L-band SAR imaging capability. The company focuses on all-weather, day-and-night radar imaging that functions reliably through clouds, smoke, fog, and darkness, making critical data accessible and affordable. Its technology uncovers fine, previously invisible details for commercial, tactical, strategic, and civilian applications. Sisir Radar is led by founder Tapan Misra, a globally recognized expert in imaging radar, former Director of ISRO’s Space Applications Centre and Physical Research Laboratory, and principal designer of the RISAT satellite series and the NASA-ISRO NISAR mission.
Role Description The Lead Mechanical Engineer will oversee the mechanical design and development of drone-borne SAR systems and related hardware in an on-site role based in Kolkata. This full-time position involves leading the design of mechanical components and assemblies, creating and reviewing CAD models and drawings, and ensuring mechanical integrity, reliability, and manufacturability. The role includes coordinating with cross-functional teams (electronics, RF, software, and flight operations), managing project timelines and deliverables, and supporting prototyping, testing, and validation activities. The Lead Mechanical Engineer will also drive continuous improvement in mechanical design processes, mentor junior engineers, and contribute to research and development for next-generation radar platforms.
Qualifications
Strong foundation in Mechanical Engineering with experience in machine design and structural analysis.
Proficiency in Computer-Aided Design (CAD) tools for 3D modeling, detailing, and tolerance analysis.
Experience in Project Management, including planning, scheduling, resource coordination, and risk management.
Background in Research and Development (R&D), ideally in aerospace, robotics, or high-precision electromechanical systems.
Bachelor’s or Master’s degree in Mechanical Engineering or a closely related discipline.
Experience with lightweight structures, thermal management, and vibration/structural testing for airborne systems is an advantage.
Familiarity with manufacturing processes, materials selection, and design for manufacturability and assembly (DFM/DFA).
Ability to lead and mentor engineering teams, collaborate across disciplines, and communicate clearly in technical and non-technical contexts.

Work arrangement
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