Job Title: Design Engineer – Diagnostics Department: Research & Development – Diagnostics

Location:
Vapi, Gujarat Reports To: R&D; Manager

Experience:
0–2 Years Job Purpose: To support the mechanical design, development, prototyping, testing, and validation of advanced in-vitro diagnostic (IVD) instruments, including automated clinical chemistry and immunoassay analyzers. The role involves developing mechanical components, assemblies, enclosures, precision mechanisms, and instrument subsystems using 3D CAD tools. The engineer will work closely with electronics, embedded software, optics, fluidics, and system engineering teams to develop reliable, manufacturable, and high-performance diagnostic instruments.

Key Responsibilities
1. Mechanical Design & 3D CAD Modelling
• Develop 3D models, mechanical components, assemblies, and detailed engineering drawings for diagnostic instruments.
• Create part models, assembly layouts, and manufacturing drawings using SolidWorks, Creo, CATIA, or equivalent CAD tools.
• Support the design of instrument chassis, enclosures, mounting brackets, fixtures, frames, and mechanical structures.
• Develop precision mechanical components for sample handling, reagent handling, and instrument automation.
• Prepare 2D drawings with appropriate dimensions, tolerances, GD&T;, and manufacturing specifications.
• Support design modifications, engineering changes, and optimization of existing mechanical components.
• Ensure mechanical designs meet functional, dimensional, structural, and assembly requirements. 2. Precision Mechanisms & Instrument Automation
• Support the design and development of precision mechanical mechanisms used in automated diagnostic instruments.
• Work on mechanical assemblies involving linear motion, rotary motion, positioning systems, and automated handling mechanisms.
• Assist in designing mechanisms involving stepper motors, servo motors, lead screws, linear guides, bearings, pulleys, belts, and gear assemblies.
• Support the development of sample loading, sample transportation, reagent dispensing, and cuvette handling mechanisms.
• Understand mechanical integration requirements for pumps, valves, tubing, probes, and fluid handling assemblies.
• Assist in evaluating mechanical accuracy, repeatability, alignment, vibration, and operational reliability.
• Collaborate with embedded and electronics engineers for motor, actuator, and sensor integration. 3. Material Selection & Manufacturing Engineering
• Support material selection for mechanical components based on strength, durability, chemical compatibility, thermal stability, and manufacturing feasibility.
• Work with engineering materials such as ABS, PC, PC-ABS, acrylic, aluminium, stainless steel, engineering plastics, and other suitable materials.
• Prepare designs for CNC machining, sheet metal fabrication, injection moulding, 3D printing, and other manufacturing processes.
• Apply Design for Manufacturing (DFM) and Design for Assembly (DFA) principles.
• Coordinate with vendors and manufacturing teams for component development and prototype fabrication.
• Review manufacturing feasibility, assembly requirements, component tolerances,



and cost optimization opportunities.
• Support the development and evaluation of prototype components and mechanical assemblies. 4. Diagnostic Instrument Development & System Integration
• Support mechanical design and development of automated clinical chemistry and immunoassay analyzers.
• Assist in developing mechanical subsystems for sample handling, reagent management, reaction cuvettes, incubation systems, and automated fluidics.
• Support mechanical integration of optical modules, photometric systems, detectors, light sources, and associated mounting arrangements.
• Develop mechanical mounting solutions for PCBs, electronic modules, sensors, motors, pumps, and other instrument components.
• Coordinate with electronics, embedded software, optics, fluidics, and system engineering teams for subsystem integration.
• Participate in instrument assembly, prototype development, feasibility studies, and design reviews.
• Assist in resolving mechanical integration challenges during product development. 5. Prototyping, Testing & Design Validation
• Support prototype development, mechanical assembly, and functional testing of diagnostic instrument components.
• Perform dimensional inspection, alignment checks, and mechanical fitment verification.
• Assist in evaluating mechanical performance, movement accuracy, vibration, temperature effects, and operational stability.
• Support testing of mechanical components under repeated operating cycles.
• Identify design defects, assembly issues, and mechanical failures and assist in root-cause analysis.
• Coordinate with cross-functional teams for design verification and validation activities.
• Maintain prototype records, testing reports, and design improvement documentation. 6. Documentation & Design Control
• Prepare and maintain 3D CAD models, 2D engineering drawings, BOMs, assembly drawings, and design specifications.
• Maintain revision history, engineering change records, and configuration documentation.
• Follow engineering drawing standards, GD&T; practices, and design control procedures.
• Support preparation of design inputs, design outputs, verification reports, and validation documentation.
• Assist in product risk assessment and design-related risk mitigation activities in coordination with R&D; and Quality teams.
• Support compliance with applicable medical device development requirements, including ISO 13485 and ISO 14971, under senior engineering guidance. 7. Innovation & Continuous Learning
• Contribute to R&D; initiatives focused on diagnostic automation, intelligent instrumentation, and next-generation medical device technologies.
• Explore new mechanical design approaches, engineering materials, manufacturing technologies, and precision motion systems.
• Participate in feasibility studies,



proof-of-concept development, and prototype evaluation.
• Identify opportunities for mechanical design improvement, component standardization, and product cost optimization.
• Continuously upgrade technical knowledge through hands-on development, mentoring, and cross-functional collaboration. Qualifications and

Experience:
• B.
E. / B.
Tech. in Mechanical Engineering, Mechatronics Engineering, Production Engineering, Manufacturing Engineering, or a related discipline.
• Diploma in Mechanical Engineering may also be considered based on technical competency.
• Fresh graduates or candidates with up to 2 years of relevant mechanical design and product development experience.
• Strong fundamentals in engineering drawing, machine design, mechanical components, manufacturing processes, and material science.
• Academic projects, internships, or practical exposure to 3D CAD modelling, mechanical assemblies, prototyping, or product development will be preferred.
• Exposure to medical devices, biomedical instrumentation, laboratory automation, or diagnostic equipment will be an added advantage. Skills and Competencies:
• Strong hands-on knowledge of 3D CAD modelling and mechanical assembly design.
• Familiarity with SolidWorks, Creo, CATIA, AutoCAD, or equivalent mechanical design software.
• Understanding of engineering drawings, GD&T;, dimensional tolerances, and geometric inspection.
• Knowledge of machine design, mechanisms, bearings, gears, shafts, motors, actuators, and linear motion systems.
• Understanding of manufacturing processes such as CNC machining, sheet metal fabrication, injection moulding, and 3D printing.
• Basic understanding of DFM, DFA, material selection, and engineering plastics.
• Knowledge of mechanical integration with electronics, sensors, PCBs, optics, and fluidics.
• Familiarity with BOM preparation, engineering change management, and technical documentation.
• Understanding of prototype development, mechanical testing, and design verification.
• Solid analytical thinking, problem-solving, and troubleshooting skills.
• Good verbal and written communication skills.
• Ability to collaborate with electronics, embedded software, optics, fluidics, manufacturing, and system engineering teams. Key Performance Indicators (KPIs):
• Quality, accuracy, and manufacturability of mechanical designs and CAD models.
• Timely completion of assigned design development and R&D; milestones.
• Effectiveness in developing mechanical components, assemblies, and precision mechanisms.
• Accuracy and completeness of engineering drawings, BOMs, and design documentation.
• Effectiveness in prototype development, mechanical testing, and design validation.
• Successful integration of mechanical subsystems with electronics, optics, fluidics, and embedded systems.
• Effectiveness in identifying and resolving mechanical design and assembly-related defects.
• Adherence to design control, engineering standards, and applicable medical device quality practices.
• Contribution to product reliability, design optimization, cost reduction, and R&D; innovation initiatives.

📌 Design Engineer – Diagnostics (Vapi)
🏢 Meril
📍 Vapi