Structural Design Engineer

3one4 Capital; Chennai District; On-site; INR 900,000 - 1,300,000; Full time

Job summary

3one4 Capital is seeking an Aerospace Structural Design Engineer to design primary and secondary airframe structures for both composite and metallic aircraft assemblies. You will develop detailed parts, assemblies, and 2D drawings while ensuring compliance with ASME standards and GD&T principles.

Collaborating with aerodynamic, structural analysis, manufacturing, and systems teams, you will support design iterations, validation, and integration across LRUs and subsystems, while maintaining

Qualifications

• Bachelor’s or Master’s degree in Mechanical, Aerospace, or Aeronautical Engineering.
• 3–5 years of relevant industrial experience in structural design, preferably in aerospace.

Responsibilities

• Design primary and secondary airframe structures in composite and metallic materials.
• Create, iterate, and release 2D drawings for parts and assemblies per ASME standards.
• Collaborate with cross‑functional teams to support design iterations, fabrication, and assembly activities.
• Perform tolerance stack‑up analyses and apply GD&T/FT&A to ensure manufacturability and fit.

Skills

CATIA 3DEXPERIENCE

FT&A & GD&T

Airframe design

Composite/metal structure

PLM & lifecycle

Education

Bachelor’s/Master’s in Mechanical/Aerospace/Aeronautical Engineering

Tools

ENOVIA

CATIA V5

Job description

Job Description

Position Summary

Aerospace Structural Design Engineer with experience in the design and development of primary and secondary airframe structures, as well as various aircraft subsystems, for both composite and metallic aircraft assemblies. Skilled in 3D CAD modeling, detailed design development, and 2D drawing creation in compliance with aerospace standards and GD&T principles. Adept at cross-functional collaboration with Structural analysis, aerodynamics, Manufacturing, and Systems teams for design integration and optimization. Experienced in configuration management and engineering change processes including SQN, PQN, ECR, and ECN to maintain product integrity across the lifecycle.

Key Responsibilities

• Design primary and secondary airframe structures, including associated interface and attachment components in both composite and metallic materials
• Develop, iterate, and modify detailed part and assembly definitions for complete aircraft structures using multiple design workbenches (Part Design, Surface Design, Assembly Design, and Composite Part Design)
• Collaborate with cross-functional engineering teams including aerodynamic, Structural analysis, Methods & Manufacturing, and Supply Chain to support design iterations, finalization, fabrication, and assembly activities
• Create and release detailed 2D engineering drawings for parts, assemblies, and installations (composite and metallic), ensuring compliance with ASME Y14.5, ASME Y14.100, and ASME Y14.37 standards
• Develop and validate 3D Functional Tolerancing & Annotation (FT&A) models by applying GD&T, datum structures, and Product Manufacturing Information (PMI) in accordance with design, manufacturing, and inspection requirements
• Support integration of components and Line Replaceable Units (LRUs) across systems including Power train, Propulsion, Battery, Avionics, and Autonomy teams
• Ensure compliance with airworthiness and certification requirements throughout the product development lifecycle
• Participate in design reviews, audits, and certification activities, providing technical inputs and design justification
• Investigate design issues and integration conflicts, and implement corrective actions in coordination with relevant stakeholders
• Support development of NMGs, CFD models, wind tunnel geometries, and zero-thickness preliminary design models, primarily for stress and aerodynamic evaluation during early aircraft development phases
• Perform tolerance stack-up analysis on aircraft structural assemblies to assess fit, form, and functional requirements, ensuring manufacturability, assembly feasibility, and design robustness
• Manage and resolve Supplier Query Notes (SQN), Production Query Notes (PQN), Engineering Change Requests (ECR), and Engineering Change Notes (ECN), working closely with configuration control and change management teams to maintain design integrity and traceability

Requirements

Required Qualifications

• Bachelor’s/Master’s degree in Mechanical, Aerospace, or Aeronautical Engineering
• 3 to 5 years of relevant industrial experience in structural design, preferably within the aerospace industry

Technical skills

• Strong proficiency in CATIA 3DEXPERIENCE or CATIA V5, including Part Design, Generative Shape Design (Surface Design), Assembly Design, Sheet Metal Design, Composite Part Design, Drafting, and Functional Tolerancing & Annotation (FT&A) workbenches
• Good knowledge of aircraft sub-systems, assembly integration, and installation procedures
• Strong understanding of composite design principles and manufacturing processes is essential
• Good understanding of product lifecycle management (PLM) and engineering design and development lifecycle processes
• Working knowledge of ENOVIA and MS Office applications for product lifecycle and documentation management
• Capable of handling delegated tasks independently and ensuring timely, high quality delivery aligned with program schedules
• Ability to work effectively in a dynamic, fast-paced environment with cross-functional teamKnowledge of prototyping methodologies (especially rapid prototyping) is preferred
• Exposure to ICEM surfacing workbench is an added advantage