PORTFOLIO — SHEET 01 OF 05
Debojyoti
Roy
Mechanical Design Engineer · Precision Systems
I turn constraints — load, tolerance, cost, manufacturability — into parts that work the first time off the line. Six years across machine design, FEA, and production handoff.
DRAWN BYD. Roy
DATE2026.07.21
SCALE1:1
SHEET01 / 05
STATUSOpen to work
01
Specification
I'm a mechanical design engineer based in Bengaluru, working across product design, FEA validation, and manufacturing handoff. My work sits at the point where a CAD model has to survive contact with a factory floor — tolerances that stack, materials that behave differently at scale, and deadlines that don't move.
Over the past six years I've designed everything from a two-stage reduction gearbox to a topology-optimized prosthetic joint, moving through Tata Motors, Larsen & Toubro, and now Bosch. I care most about the handoff — the moment a design leaves my screen and becomes a physical part, on schedule and within spec.
Outside client work, I keep a running log of failure analyses — parts that broke, why, and what the drawing should have said differently the first time.
DATASHEET — D. ROY, ME
EXPERIENCE6 YRS
EDUCATIONB.TECH, MECHANICAL — JADAVPUR UNIVERSITY, 2018
LOCATIONBENGALURU, IN
SPECIALIZATIONMACHINE DESIGN + GD&T
CORE TOOLSSOLIDWORKS · CATIA V5 · ANSYS
CERTIFICATIONSIX SIGMA GREEN BELT
AVAILABILITYOPEN TO NEW PROJECTS
02
Capabilities
Design & CAD
SolidWorks±3%
AutoCAD±4%
CATIA V5±6%
GD&T±4%
Analysis & Simulation
ANSYS FEA±5%
Thermal analysis±8%
CFD (fundamentals)±10%
MATLAB±9%
Manufacturing & Materials
CNC machining±6%
Sheet metal design±7%
Injection molding DFM±9%
Materials selection±4%
Core Engineering
Machine design±3%
Thermodynamics±4%
Fluid mechanics±5%
DFM / Six Sigma±6%
03
Drawings
REV C
Adaptive gripper
Three-finger pick-and-place gripper for a mixed-SKU packing line. Compliant TPU fingertips over an aluminium frame let one gripper handle 14 part geometries without a tool change.
DWG NOMG-014
SCALE2:1
RESULT−18% CYCLE TIME
DATE2024
REV B
HVAC duct optimization
CFD-driven reroute of supply ductwork across a 40,000 sq. ft. commercial floor. Reshaped elbows and split ratios to cut static pressure loss without touching the existing AHU.
DWG NOHV-027
SCALE1:50
RESULT−22% Δp
DATE2023
REV D
Two-stage reduction gearbox
Spur-plus-helical gearbox for a conveyor drive, sized for a 40:1 reduction under shock loading. Full GD&T tolerance stack-up to keep backlash inside 0.05mm across the gear train.
DWG NOGB-009
SCALE1:2
RESULT0.05mm BACKLASH
DATE2022
REV A
Lightweight prosthetic knee joint
Topology-optimized titanium-lattice knee joint for a below-hip prosthetic, printed via DMLS. Mass cut without giving up the fatigue margin required for daily gait loading.
DWG NOPJ-003
SCALE1:1
RESULT−31% MASS
DATE2021
REV B
Engine mount vibration damping
Redesigned elastomeric engine mount to shift the resonant band clear of idle RPM. Modal analysis plus durometer tuning cut cabin NVH transmission on a light commercial platform.
DWG NOEM-018
SCALE1:1
RESULT−6dB NVH
DATE2019
04
Experience
2022 —
PRESENT
PRESENT
Senior Design Engineer
Bosch Ltd — Bengaluru
Own mechanical design for driveline components from concept through PPAP, leading tolerance stack-ups and DFM reviews with three offshore manufacturing partners.
2019 —
2022
2022
Mechanical Design Engineer
Larsen & Toubro — Chennai
Designed structural and drive-train components for material-handling equipment. Ran FEA validation on gearbox housings and conveyor frames ahead of prototype build.
2018 —
2019
2019
Graduate Engineer Trainee
Tata Motors — Pune
Rotated through body-in-white and powertrain design teams, supporting drawing releases and first-article inspection on chassis components.
05
Contact
Have a part that
needs to work
the first time?
Open to full-time roles and independent design contracts — machine design, FEA validation, and DFM reviews.
Email me directly- EMAILdebojyoti.roy@example.com
- LINKEDINlinkedin.com/in/debojyotiroy
- LOCATIONBengaluru, IN
- RESPONSE TIME~2 business days