Matheus C.
Mechanical Engineer | Patient-Specific Medical Device CAD | SolidWorks, DFM and Production
Norway
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About
I am a mechanical engineer with six years in design and production, most of it in patient-specific medical devices.
At Adtiva 3D in Goiânia, Brazil, I was head of design and production for a team of four. I built the CAD for patient-specific moulds used to form PMMA cranioplasty prostheses, and for the pre-surgical planning models that surgeons reviewed before operating. I also ran the production side end to end: FDM and MSLA printing, build orientation and slicing, equipment specification and commissioning, production planning and preventive maintenance. Two results I can point to: a standardised-coordinate template that cut prosthesis design time from 2 days to 1 hour, and a part-splitting method plus a new printer fleet that raised output from 4 to 20 units per month.
My toolkit: SolidWorks and AutoCAD for 3D modelling, assemblies and 2D drawings with tolerances; Materialise Mimics and 3-matic for CT/MRI segmentation and patient-specific geometry; Meshmixer and Ultimaker Cura; CNC machining and programming, MIG/TIG welding and sheet metal from production work and coursework. My degree thesis was an experimental study of friction and wear in MSLA and FDM printed parts, measured on printed specimens.
I have also worked in calibration and metrology: repairing and calibrating digital tachographs to Continental manufacturer specification, and mechanical evaluation of trucks on a roller test bed to Inmetro requirements.
What I am good at: turning a drawing, scan or concept into a part that can actually be manufactured; design for manufacture in printing, machining and sheet metal; 2D drawings that a shop can work from; fixtures and tooling; production planning and maintenance.
I am based in Trondheim, Norway, and work remotely. English C2 (EF SET certified) and Portuguese native; Norwegian B1.
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At Adtiva 3D in Goiânia, Brazil, I was head of design and production for a team of four. I built the CAD for patient-specific moulds used to form PMMA cranioplasty prostheses, and for the pre-surgical planning models that surgeons reviewed before operating. I also ran the production side end to end: FDM and MSLA printing, build orientation and slicing, equipment specification and commissioning, production planning and preventive maintenance. Two results I can point to: a standardised-coordinate template that cut prosthesis design time from 2 days to 1 hour, and a part-splitting method plus a new printer fleet that raised output from 4 to 20 units per month.
My toolkit: SolidWorks and AutoCAD for 3D modelling, assemblies and 2D drawings with tolerances; Materialise Mimics and 3-matic for CT/MRI segmentation and patient-specific geometry; Meshmixer and Ultimaker Cura; CNC machining and programming, MIG/TIG welding and sheet metal from production work and coursework. My degree thesis was an experimental study of friction and wear in MSLA and FDM printed parts, measured on printed specimens.
I have also worked in calibration and metrology: repairing and calibrating digital tachographs to Continental manufacturer specification, and mechanical evaluation of trucks on a roller test bed to Inmetro requirements.
What I am good at: turning a drawing, scan or concept into a part that can actually be manufactured; design for manufacture in printing, machining and sheet metal; 2D drawings that a shop can work from; fixtures and tooling; production planning and maintenance.
I am based in Trondheim, Norway, and work remotely. English C2 (EF SET certified) and Portuguese native; Norwegian B1.
Experience
- Tachograph Technician and Maintenance Goiás Parabrisas · Full-time Mar 2026 – Sep 2026 6 mos Goianésia, Goiás, Brazil Repair and calibration of digital tachographs to Continental manufacturer specification, and mechanical evaluation of trucks on a roller test bed against Inmetro (Brazilian metrology agency) requirements. Dimensional measurement, calibration records and fault diagnosis were the daily work.
- Production Worker Granja Cardoso Freitas · Full-time Feb 2025 – Mar 2026 1 yrs 1 mos Goianésia, Goiás, Brazil Production role in a poultry operation, in a team of four: pipe cutting and MIG/TIG welding for ad-hoc problem solving, plus assembly and upkeep of workshop equipment. The most hands-on job I have held - angle grinder, drill, welding machine and hand tools every day.
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Head of Design and Production
Adtiva 3D - Laboratório de Anatomia Específica · Full-time
Apr 2019 –
Feb 2025
5 yrs 10 mos
Goiania
Head of design and production for patient-specific medical devices, with a team of four and ownership of the whole chain from scan to shipped part.
Design: CAD for the moulds used to form PMMA cement cranioplasty prostheses, and for pre-surgical planning models printed in PLA and MSLA resin. CT/MRI segmentation and patient-specific geometry in Materialise Mimics and 3-matic, modelling in SolidWorks and Meshmixer, slicing and build orientation in Ultimaker Cura.
Production: FDM and MSLA printing on Bambu Lab, Creality, Prusa and Elegoo machines; equipment specification and commissioning; production planning; preventive maintenance across the printer fleet.
Results:
- Standardised-coordinate CAD template cut prosthesis design time from 2 days to 1 hour.
- Part-splitting method saved 15 minutes per hour of printing and improved surgeon visualisation.
- Specified and commissioned a new printer fleet, raising output from 4 to 20 units per month.
- Introduced preventive maintenance, cutting repair costs by about 30% per month. - Engineering Analyst Use Móveis Planejados · Full-time Feb 2022 – Jun 2022 4 mos Goianira, Goiás, Brazil Concurrent with my role at Adtiva 3D, which I ran remotely during this period. New furniture models and dimension adaptation for a 40-person factory: production plans issued to the floor, production monitoring, and upkeep of all machinery. Redesigned the sheet-metal cutting process for a 10% loss reduction. Tools: AutoCAD, SolidWorks and the company CRM.
Education
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Instituto Federal de Educação, Ciência e Tecnologia de Goiás (IFG)
Bachelor's degree, Mechanical Engineering
2015 – 2026
Coursework completed in 2021; degree conferred in March 2026 - the thesis presentation and the mandatory internship documentation were concluded then, with classes attended daily from 07:00 to 12:00 alongside full-time employment.
Bachelor's thesis: comparative analysis of surface wear due to friction in elements printed by MSLA and FDM methods - dry and greased friction tests with wear height measured on printed specimens.
Relevant coursework: strength of materials, welding, CNC machining and programming, CAD design. EQF level 6 equivalent.
Licenses & Certifications
- EF SET English Certificate - C2 Proficient (72/100) Jan 2025 – Present See credential
Stats
0 followers, 0 following
Joined: November 9, 2026
Last seen: November 11, 2026
Area of Expertise
Languages
Portuguese Native or bilingual proficiency
English Professional working proficiency
Norwegian Limited working proficiency
Location
Norway