Senior Mechanical Design Engineer

4 days ago

Chennai, Tamil Nadu, India Planys Technologies Full time ₹ 12,00,000 - ₹ 36,00,000 per year

Company Brief

Planys is a deep tech start-up revolutionizing infrastructure integrity and risk assessment. Planys specializes in smart underwater inspection solutions and sophisticated digital analytics and reporting of NDT data. Planys envisions to steer a new course in the maintenance and inspection industry with its disruptive innovations in the field of marine robotics, novel underwater NDT methods and AI enabled post-inspection analytical digital reporting dashboard. Planys helps asset owners/operators in taking data-driven decisions for effective maintenance and repair of their critical assets. (Website: )

Role & Responsibilities

  • Lead end to end mechanical design of ROVs, AUVs, & asset inspection robotic systems.
  • Design subsea pressure housings for electronics & sensors, Familiar with Pressure vessel design as per (BPVC), Material selection, thickness calculations, FEA Analysis of pressure vessels
  • Design of underwater Propulsion System components, Sizing and Selection of Motors, bearings, Design of motor housings, shafts, bearing housing
  • Develop structural designs considering static, dynamic, thrust loads, vibration, fatigue and hydrodynamic effects. Knowledge of hydrodynamics and CFD. Conversant with FEA/CFD tools
  • Design sealing & penetrator interfaces O-ring grooves, shaft seals, face seals, dynamic and static sealing conditions.
  • Design robotic mobility systems (kinematics, adhesion(magnetic/ vacuum), seledrive torque estimation, surface traction studies).
  • Carry out requirement analysis, concept evaluation, feasibility & simulation-based validation (analytical + numerical).
  • Rapid prototyping & hands-on development including machining, assembly, tolerance adjustments, and fit checks.
  • Conduct field testing and sea trials, analyse in-water performance and iterate designs based on operational feedback.
  • Work closely with Electrical, Software and Field Service teams during integration and qualification testing.
  • Drive product reliability improvements, failure mode analysis (RCA), corrective actions and build robustness in next revisions.
  • Create engineering documents — detailed drawings (GD&T), tolerance analysis, BOMs, testing plans & design reports.
  • Excellent Knowledge of GD&T is required.
  • Mentor junior engineers & interns on design best-practices & build reviews.

Expected Skillset

  • 3D CAD (SolidWorks)
  • Pressure Vessel Design
  • Marine Propulsion Design
  • FEA / CFD Analysis
  • Sealing Engineering
  • Troubleshooting & Field Engineering
  • Cross-Function Collaboration
  • Reliability Engineering & FMEA

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