Tufts University • Class of 2028 • Mechanical & Biomedical Engineering

Designing practical, reliable, and manufacturable hardware solutions.

About Me: I am a sophomore studying Mechanical and Biomedical Engineering at Tufts University (3.90 GPA). I’m driven by the challenge of taking open-ended hardware problems from first-principles analysis and 3D CAD to reliable, physical prototypes. Outside the lab and machine shop, I enjoy building custom mechanical watches, cooking, and baking.

My technical focus spans SolidWorks CAD, Finite Element Analysis (FEA), COMSOL simulation, and rapid prototyping via FDM/SLA 3D printing and laser cutting.

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Portrait of Siddarth Rajkumar

Core Focus

  • 3D CAD & complex assemblies
  • FEA & First-Principles analysis
  • Rapid Prototyping (FDM, SLA, Machining)
  • Design for Manufacturability (DFM)

Portfolio

Featured Projects

Optomechanical CAD / SLA & FDM

Pulse Oximeter

Designed a compact, snap-fit pulse oximeter housing and custom SLA-printed optical light channels for dual-ratio blood oxygen measurement at the Tufts DOIT Lab.

  • Tools: SolidWorks, COMSOL, SLA & FDM 3D Printing, Spectrometer
  • Key Impact: Replaced 6 mm glass prism assemblies with integrated Formlabs Clear Resin V4.1 waveguides verified via Snell's Law.
CAD assembly of the Pulse Oximeter View project →
Mechanism Design / Prototyping

Mechanical Embosser

Designed, prototyped, and iterated a Scotch-yoke-driven mechanical embosser to convert rotational motion into repeatable linear stamping force.

  • Tools: SolidWorks, FDM 3D Printing (PLA), Laser Cutting, Aluminum Extrusions
  • Key Impact: Eliminated mechanism jamming and reduced gear tooth friction through custom hub design and material iteration.
Isometric view of the embosser View project →
Finite Element Analysis (FEA)

Dental Implant Stress Analysis

Modeled and analyzed Von Mises stress, displacement, and Factor of Safety in a Ti-6Al-4V titanium dental implant under a 200 N oblique bite load (45°).

  • Tools: SolidWorks, SolidWorks Simulation (FEA), Curvature Mesh Study
  • Key Impact: Optimized neck geometry to 4.2 mm, reducing peak stress by 38.5% (to 123 MPa) and achieving a 2.006 Factor of Safety.
View of the dental implant View project →

Capabilities

Engineering Skills

Mechanical Design

3D CAD assemblies, mechanism design, tolerance stackups, DFM/DFA, snap-fit & enclosure design.

CAD & Simulation

SolidWorks, SolidWorks Simulation (FEA), COMSOL Multiphysics, Autodesk Inventor, technical drawings.

Engineering Analysis

Structural FEA, first-principles hand calculations, stress/strain, optical ray tracing, MATLAB data analysis.

Prototyping & Code

FDM & SLA 3D printing, laser cutting, machining, carbon fiber layup, soldering, C++, Java.

Background

Experience & Leadership

Undergraduate Research Assistant — Tufts DOIT Lab

Tufts University (Diffuse Optics Imaging of Tissue Lab) • Sept 2025 – Present

  • Design and iterate multi-part CAD enclosures in SolidWorks for a prototype pulse oximeter utilizing the dual-ratio optical measurement method.
  • Fabricate chassis components via FDM and custom optical refraction channels in PETG and SLA Clear Resin.
  • Measure optical transmittance using a broadband spectrometer and simulate ray paths in COMSOL to evaluate waveguide performance.

Solar Vehicle Club & IEEE Member

Tufts University • Sept 2024 – Present

  • Tufts Solar Vehicle Club: Fabricated composite chassis components via carbon fiber resin infusion and finished the aerodynamic aeroshell using progressive 400-to-1000 grit wet/dry sanding.
  • Tufts IEEE: Practiced circuit assembly, electronics prototyping, and precision soldering techniques.

B.S. in Mechanical & Biomedical Engineering

Tufts University • 2024 – May 2028 (GPA: 3.90)

  • Relevant Coursework: Engineering Design (ME 40), Materials and Manufacturing, Thermal Fluid Systems, Mechanics (Statics & Dynamics).
  • Additional Projects: Processed and analyzed 12 years of federal public health dataset trends in MATLAB; co-developed a laser-cut and 3D-printed educational board game for McCall Middle School students.

Contact

Interested in working together or discussing hardware engineering roles and internships?

siddarth.rajkumar@tufts.edu srk03@outlook.com LinkedIn Resume