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Product Development & MVP Validation
- System architecture & mechanical engineering logic
- Rapid prototyping for functional MVP validation
- Risk analysis & design iteration based on testing
Hardware Industrialization · Switzerland
Engineering products that scale.
I help hardware teams move from working prototypes to scalable, cost-effective manufacturing, de-risking DFM, suppliers and production before you commit to tooling.
Direct fractional & project-based advisory · NDA protected
Official Innosuisse CoachStartup industrialization
15+
Years in hardware engineering
25+
Startups coached
8
Industries (Aerospace, Robotics, MedTech & more)
EU + Asia
Qualified supply chain network
Proven Track Record
Coached Startups & Deeptech Spin-offs
Swiss hardware, robotics and deeptech innovators coached on manufacturing scale-up, DFM, and supply chain readiness via Innosuisse & venture acceleration programs.
Institutional Mentorship
Trusted as Hardware Mentor & Expert
Appointed to coach cohorts, evaluate technical feasibility, and guide deeptech spin-offs across Switzerland’s premier innovation engines.
Innosuisse
Official Startup CoachAccredited coach guiding deeptech spin-offs through product industrialization, DFM, and manufacturing scale-up.
ETH Zurich
Hardware Mentor & ExpertAdvising university spin-offs on mechanical architecture, DFM validation, and moving prototypes from lab to production.
UPortunity
Accelerator Mentor · Enabled by UBS1:1 hardware mentorship, prototype de-risking, and expert jury evaluations for ETH accelerator cohorts.
HSG START Accelerator
Hardware & Manufacturing CoachCoaching University of St. Gallen venture cohorts on hardware viability, unit economics, and supplier strategies.
ETH Entrepreneur Club
Mentor & Ecosystem ExpertSupporting student founders with technical sanity checks, DFM guidance, and hardware prototyping workshops.
Case studies
Selected work
Real engineering challenges across industries, from R&D prototype to manufacturable product. Select a project for details.
Who I help
Engineering for real-world manufacturing
Founders and CTOs who need senior engineering support without hiring full-time. My focus is speed, cost awareness and reducing manufacturing risk before scale.
Hardware startups
Pre-seed to Series B. Transitioning from functional prototypes to DFM-ready designs. High-reliability systems requiring validation, precision and manufacturing discipline.
Pharma & Medical Industry
Cross-continent tech-transfer, manufacturing relocation and supplier partner identification.
Industrial SMEs
Modernizing products or resolving manufacturing and quality challenges, reducing manufacturing cost and implementing SixSigma and Lean manufacturing practices.
Expertise
Services across the full
Start a conversation
Services across the full
hardware lifecycle
02
DFM, DFA & Costing
- Process-specific DFM (injection molding, die casting, CNC, sheet metal)
- DFA & assembly logic to reduce part count
- Cost breakdown analysis & material selection
- Tooling feasibility studies for mass production
03
Industrialization & Supply Chain
- Pilot series, pre-production and mass production scaling
- Global supplier sourcing, evaluation & technical alignment (Asia / EU)
- Quality systems implementation & production line readiness
04
Strategic Advisory & Coaching
- Hardware roadmaps & technical due diligence for investors
- CTO-level support for high-stakes hardware decisions
- Official Innosuisse Coaching framework for Swiss startups
Strategic partnership
Turn-key Hardware Delivery: Mechanics + Electronics + Firmware
Single point of contact for complete hardware systems. Puerta Diaz Engineering leads product architecture, mechanical engineering, and manufacturing scale-up, partnering with MicroBitDesign for embedded electronics, PCB layout, and production firmware.
Puerta Diaz Engineering · Switzerland
Mechanical & industrialization
Product architecture, DFM/DFA, tooling, supplier qualification and scale-up to mass production.
MicroBitDesign · Bosnia & Herzegovina
Electronics & firmware
End-to-end embedded solutions, from schematic capture to production firmware and assembly.
Embedded firmware
Robust firmware for ARM, AVR, ESP32 and more. Bare-metal to RTOS (FreeRTOS, Zephyr) with secure boot and OTA updates.
PCB design & capture
Production-ready schematics and multi-layer PCB layouts focused on signal integrity, EMC compliance and DFM.
Assembly & 3D printing
In-house SMT assembly down to 0402, rework, and precision 3D-printed enclosures for rapid prototyping.
Engagement models
Flexible engineering engagement
Whether you need an urgent pre-tooling sanity check, a dedicated sprint to bring an MVP to pilot production, or ongoing senior hardware leadership.
RAPID ASSESSMENT
DFM & Manufacturing Review
1 – 2 Weeks · Fixed Scope
In-depth technical review of your 3D CAD, BOM, and manufacturing assumptions before you commit capital to tooling.
- Comprehensive DFM report (wall thickness, draft, parting lines)
- Material selection & tooling feasibility analysis
- Unit cost (BOM) breakdown & assembly risk register
Best for
Founders & CTOs about to freeze CAD or sign tooling POs.
Request a DFM Review
EXECUTION SPRINT
NPI & Industrialization Sprint
2 – 3 Months · Milestone Driven
Hands-on engineering execution taking your validated prototype through design transfer to pilot production.
- Full production-ready CAD & 2D manufacturing drawings (GD&T)
- Qualified supplier sourcing & RFQ technical alignment (EU · Asia)
- First-article inspection (FAI) & pilot run troubleshooting
Best for
Hardware ventures preparing for pilot series and investor delivery milestones.
Discuss an NPI sprint
EMBEDDED LEADERSHIP
Fractional Head of Hardware
1 – 2 Days / Week · Retainer
Senior engineering leadership embedded in your team without the cost or delay of a full-time executive hire.
- Hardware roadmap planning & budget de-risking
- Technical vendor & supplier ecosystem management
- Due diligence support for fundraising & Innosuisse coaching
Best for
High-growth teams needing senior engineering oversight and supplier leverage.
Explore fractional advisory
About
Daniel Puerta Diaz
Senior Mechanical & Industrial Engineer
Based in Switzerland, I work with teams across Europe and Asia on the development and industrialization of high-tech hardware products.
My background spans aerospace, medical devices, robotics, automotive and consumer sports equipment. I specialize in bridging the gap between engineering design and real-world manufacturing, ensuring products are robust, manufacturable and ready to scale.
My expertise covers plastic injection molding, CNC machining, tooling, DFM/DFA, supplier selection and cost engineering, with a strong focus on reducing manufacturing risk before production commitments are made. I help teams optimize part geometry to avoid costly tooling modifications.
Throughout my career, I've led engineering teams, coordinated closely with external manufacturers in Asian ecosystems, and supported multiple hardware startups from early concept through to series production.
Connect on LinkedInAccreditations & Industry Programs
04
Federal Agency
Innosuisse Coach
Accredited startup coach for industrialization, DFM, and manufacturing scale-up under the Swiss Federal Innovation Agency.
Aerospace Standard
Airbus Tier-1 Delivery
Cabin engineering lead adhering to strict civil aviation airworthiness standards, composite tooling, and safety certifications.
Healthcare
MDR & FDA Compliance
Design transfer and quality validation protocols for radiotherapy imaging and medical rehabilitation equipment.
Innovation Hub
Swiss Hardware Ecosystem
Embedded in Swiss startup hubs, universities, and European accelerators for rapid prototype-to-market translation.
Track record across 25+ ventures
Cross-disciplinary engineering delivery across cutting-edge hardware domains:
Autonomous Security Drones
Robotic Mobility Exoskeletons
X-Ray & Radiotherapy Devices
Airbus Passenger Cabins
Automotive Interior Systems
Consumer Augmented Reality (AR/VR)
Electric Vehicles & Performance Sports
Precision Optical Wearables
Pharma & Medical Tech Transfer
Get in touch
Ready to scale your hardware?
Let's discuss your engineering and manufacturing challenges and how to de-risk your path to production.
Prefer email or require an NDA first? Reach out directly at daniel@puertadiazengineering.com