Numakers, LLC
Website:
numakers.com
Job details:
Numakers is India's largest 3D printing filament manufacturer, building a global 3D printing materials company from India. We are hiring a dedicated R&D engineer to lead our materials laboratory.
The role
You will own the technical development cycle for thermoplastic filament systems: formulation trials, compounding process optimization, and print performance validation. This is a build-from-zero role — you define the test protocols, qualification standards, and lab infrastructure that the function will run on.
What you'll work on
- Design of experiments for polymer blend systems: impact modification, nucleation and crystallization behavior, filler dispersion, and melt rheology
- Twin-screw compounding trials — screw configuration, temperature profiling, residence time, and devolatilization optimization
- Additive qualification: evaluating tougheners, compatibilizers, lubricants, and stabilizer packages against defined acceptance criteria (particle size distribution, MFR shift, thermal stability, migration behavior)
- Print performance characterization: interlayer adhesion, dimensional accuracy, warpage, mechanical testing (izod, tensile, flexural) correlated back to formulation and process variables
- Competitive benchmarking via thermal analysis (DSC, TGA) and spectroscopy (FTIR)
- Root-cause analysis of production and field failures
What we're looking for
- M.Sc./M.Tech in Polymer Science, Materials Engineering, or Chemical Engineering (or B.Tech with equivalent depth)
- 4+ years hands-on with polymer compounding — biopolymer or polyolefin modification experience strongly preferred
- Working fluency with DSC, MFR, mechanical testing; FTIR interpretation a plus
- Practical FDM/FFF printing experience, or the curiosity to build it fast
- Comfort designing experiments and making decisions with incomplete data
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