Senior technical applications engineer — polymer compounding & additive manufacturing materials
Numakers · Surat, India
FULL TIMEpermanent
Job Description
Numakers is India's largest 3 D printing filament manufacturer, building a global 3 D 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
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
Details
| Company | Numakers |
| Location | Surat, India |
| Type | FULL TIME |
| Niche | tech |
| Experience | permanent |