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Aamir S.
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Aamir S.

Mathematician | Scientific Computing, PDE Solvers & PyTorch ML

Your research depends on a computation that will not cooperate. A solver that does not converge, a method from a paper that needs implementing, or a simulation too slow to use. I build that in Python and PyTorch, from the equations up. I am a PhD researcher in applied mathematics at GIK Institute, Top Rated with a 100% Job Success Score. I write the numerical method myself rather than wrapping a package. WHAT I HAVE DELIVERED For a number theory researcher I built seven computational programs over several months, including spectral analysis tools and a geometry engine, and packaged them as a desktop application for Windows and macOS. In the client's words, I "took interest in the overall goals and intentions for the project." For a contact mechanics study I built an inverse physics-informed neural network in PyTorch that recovered the contact radius to 99.7% of the analytical value. For a turbulence project I adapted a PINN with sparse regression to recover the governing Navier-Stokes terms for 2D Kolmogorov flow at Re = 10,000. For a small business I built a shift settlement tool. It tracks stock passed between four workers and works out what each one owes, with the history saved behind a login. RESEARCH My paper on physics-informed neural networks for the regularized long-wave equation is on arXiv (2511.11638). A second paper, on the coupled Klein-Gordon-Schrodinger system, is under review. It reports errors 2.6 to 5.8 times lower than a published radial basis function method. I am on a fully funded HEC-IRSIP research visit at Imperial College London from September 2026 to March 2027. I have also taught Calculus and Numerical Analysis at GIKI. WHAT I TAKE ON I take on custom solvers and simulations in Python or MATLAB, implementations of methods from papers, and surrogate models for slow CFD or FEM runs. I also debug scientific and machine learning code that trains but gives the wrong answer, and turn calculations a business does by hand into a working tool. For AI evaluation teams, I write and review research-level scientific coding problems with Python reference solutions and hidden tests. I do not take coursework or tutoring, and I do not use ANSYS or COMSOL. Describe your problem in a message. I will tell you plainly whether I can solve it and how. Scientific Computing | Numerical Methods | Partial Differential Equations | PDE Solver | Physics-Informed Neural Networks | PINN | Inverse Problems | Surrogate Modeling | Simulation | Mathematical Modeling | Algorithm Development | Python | NumPy | SciPy | PyTorch | DeepXDE | MATLAB | Research Scientist

🇵🇰Losar Shafu, Pakistan$40/hr100% JSS5.00 (7)Since Dec 2020
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Earnings and projects

MRR
$1.3k

Last 6 months ÷ 6

World#38,047 / 412k
🇵🇰Country#4,457 / 52.9k
Revenue, last 30 days
$0

Last 6 months: $7.7k

Total earnings
$19k

Billed in all: $19k

World#146,423 / 412k
🇵🇰Country#14,577 / 52.9k
Per project
$1.3k

$964 in the last 6 months

World#103,456 / 412k
🇵🇰Country#8,758 / 52.9k
Projects, last 6 months
8
75% fixed25% hourly
World#24,500 / 412k
🇵🇰Country#5,527 / 52.9k
Projects in all
14

Across 15 contracts

80% fixed20% hourly
World#168,285 / 412k
🇵🇰Country#27,914 / 52.9k

Earnings, last 30 days

$19kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$18.8k$19.0k$19.2k$19.4kOct 8Oct 23Nov 7

Skill rankings: Top 4% in Scientific Computation

Ranked by MRR among everyone on Upwork with the skill.

  1. #4Scientific Computation98 freelancers · 🇵🇰 #1Top 4%
  2. #4Numerical Analysis56 freelancers · 🇵🇰 #1Top 7%
  3. #5Applied Mathematics56 freelancers · 🇵🇰 #1Top 9%
  4. #8SciPy90 freelancers · 🇵🇰 #4Top 9%
  5. #11Matplotlib233 freelancers · 🇵🇰 #2Top 5%
  6. #13Simulation Software135 freelancers · 🇵🇰 #3Top 10%
  7. #14Mathematical Optimization171 freelancers · 🇵🇰 #2Top 8%
  8. #16Mathematical Modeling224 freelancers · 🇵🇰 #2Top 7%