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Hongjian
Li

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12
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About me
Hi, I'm Hongjian, an engineer based in China. Most of my time goes into WeldLab, a welding simulation program I'm building myself - the solver, the meshing, the whole thing. That's why my main skills are C++ and Python. On here I take small, clear jobs: fixing code that doesn't work, writing a script to do a boring repeated task, cleaning up a messy spreadsheet, or running a simulation and writing down what the results actually mean. I work carefully and I check things before I send them. If a job is not for me, I'll tell you straight away instead of wasting your time.

Work experience

WeldLab
December 2025 – Current time
Job title
Lead Simulation Engineer & C++ Developer
Work experience & achievements
Developing an independent welding simulation solver (thermal-mechanical coupling, Goldak heat source, multi-pass deposition) benchmarking against Simufact Welding.

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