Hire the Best Prototype Designers in California

Clients rate our Prototype designers
Rating is 4.8 out of 5.
4.8/5
Based on 378 client reviews
Kai H.

Palo Alto, California

$55/hr
4.9
212 jobs

Senior UX/UI and Product Designer with 10+ years of experience designing websites, web applications, and digital products in Figma. I help teams improve user experiences — from marketing websites and landing pages to complex applications, dashboards, and content-rich systems. Whether you need polished UI mockups, UX improvements, wireframes, prototypes, or an expert review of an existing product, I bring senior-level thinking with hands-on execution. I’m especially good at quickly identifying usability issues, simplifying complexity, and turning ideas into intuitive, polished experiences that are practical to implement. I can help with: • Website and landing page design • UX/UI design for web and mobile applications • Figma mockups, wireframes, and interactive prototypes • UX reviews and product analysis • Improving workflows and usability • Design feedback and expert consultation • Content-heavy and CMS-driven experiences • Design systems and UI consistency How I work: • Senior-level strategic thinking + hands-on execution • Fast ramp-up and clear communication • Comfortable collaborating with product, marketing, and engineering teams • Strong understanding of HTML/CSS for smoother developer handoff Tools: Figma, AI-assisted design workflows, prototyping, UX research, wireframing Portfolio: kaihecker.de

  • Prototyping
  • Web Design
  • Figma
  • User Interface Design
  • UX & UI
  • Wireframing
  • Mobile UI Design
  • UI/UX Prototyping
  • Email Design
  • Product Design
  • User Experience
  • CSS
  • HTML
  • Review
  • Testing
Ilya S.

Los Angeles, California

$90/hr
5.0
55 jobs

You have a hardware idea — or a prototype that needs to actually ship. That's where I come in. I'm a Top Rated+ mechanical and product design engineer with 9+ years turning concepts into production-ready hardware. I specialize in electronic enclosures, mechanical assemblies, and design-for-manufacturing — for funded startups, engineering teams, and hardware founders who can't afford to get this wrong. Currently embedded with an $8M Reg CF–backed hardware company, I bring the same rigor and speed you'd expect from an in-house senior engineer — without the overhead. What I deliver: — Custom enclosures & housings (PCB, IoT, consumer, industrial) — Mechanical assemblies: drivetrains, linkages, motion systems, actuators — Full DFM optimization for 3D printing, CNC, and injection molding — Investor-ready prototypes and production-ready CAD packages — 2D engineering drawings and tolerance specs I work directly with founders, CTOs, and engineering leads. I communicate clearly, move fast, and deliver files you can actually hand to a manufacturer. Tools: Fusion 360 (advanced) If you're building hardware and need it done right — let's talk. 𝗘𝗟𝗘𝗖𝗧𝗥𝗢𝗡𝗜𝗖/𝗣𝗖𝗕 𝗘𝗡𝗖𝗟𝗢𝗦𝗨𝗥𝗘𝗦/𝗦𝗛𝗘𝗟𝗟𝗦/𝗖𝗔𝗦𝗘𝗦 • Design of any type of enclosure, from simple setups with 2 to 4 components to complex electronics assemblies requiring enclosure, waterproofing, and ventilation. • Suitable for any usage: consumer, professional, or special applications. • Designed for any environmental requirements: indoor, outdoor, or mixed use. • Compatible with various manufacturing techniques, including but not limited to 3D printing, CNC, and mass production. 𝗠𝗘𝗖𝗛𝗔𝗡𝗜𝗖𝗔𝗟 𝗔𝗦𝗦𝗘𝗠𝗕𝗟𝗜𝗘𝗦 • Kinematic systems & motion mechanisms • Drivetrains, gear assemblies, and power transmission • Belt, chain, and gear-based systems • Linkages, cams, pulleys, and mechanical timing setups • Custom actuators and motion control design 𝗞𝗲𝘆 𝗤𝘂𝗮𝗹𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀: • Proficient in 3D CAD design and digital fabrication techniques (3D printing, Laser cutting, CNC) • Strong research and development background, including rapid prototyping • Concept development and problem-solving expertise • Technical mentorship and assistance for works feasibility and production • 8 years of teaching experience including biggest Universities • Creative leadership and supervision across all project stages • Interactive design and development 𝗦𝗸𝗶𝗹𝗹𝘀: - Product design - 3D CAD Modeling - Mechanical Engineering - Enclosure Design - Fusion 360 - Rapid Prototyping - 3D Printing - CNC Machining - Mechanical Assemblies - Mechanical Design - Design for Manufacturing (DFM) - 2D Engineering Drawings

  • Autodesk Fusion 360
  • 3D Design
  • 3D Modeling
  • Geometric Dimensioning & Tolerancing
  • CAD
  • 3D Printing
  • Product Design
  • CAD Software
  • Concept Development
  • Industrial Design
  • Product Development
  • Industrial & Product Design Consultation
  • Mechanical Design
  • Design for Manufacturing
  • Rapid Prototyping
Jordan C.

Los Angeles, California

$80/hr
5.0
91 jobs

My name is Jordan, I’ve been designing, modeling, and creating products with Autodesk Fusion 360 for over 10 years specializing in prototype products and small scale manufacturing. During that time, I have developed an eye for design that is carefully shaped around the restrictions of real world production. Sometimes it can be difficult to bridge the gap between a designer and the reality of manufacturing, but my experience allows me to create an ideal compromise resulting in retaining the original design while ensuring the best result during production! I’m not only a designer, but a maker and business owner myself! 🛠I have personal experience in small scale production (injection molding & 3D printing) 💸I understand the expense in starting a business 💰I can work around any budget 🔭I will help visualize your product 🔩I know how to design successful 3D printed items for cheap and rapid prototyping I can turn your vision into a reality. Give me a little guidance, some photos or drawings for inspiration and leave the rest up to me. Below are all of the file formats I can produce: - .F3D - .3MF - .IPT - .DWG - .DXF - .FBX - .IGES - .OBJ - .SAT - .SKP - .SMT - .STEP - .STL - .USDZ

  • Autodesk Fusion 360
  • Rapid Prototyping
  • Design for Manufacturing
  • Printable 3D Models
  • 3D Modeling
  • 3D Design
  • 3D Rendering
  • 3D Model
  • Industrial & Product Design Consultation
  • Product Design
  • CAD & CAM Software
  • Autodesk
  • Prototype Design
  • 3D Printer
  • Sheet Metal
  • CAD Drafting
  • Engineering Design
  • Parametric Design
  • Prop Design
  • Manufacturing
Anton A.

San Diego, California

$100/hr
5.0
125 jobs

⭐️ Upwork Expert-Vetted • Top 1% ⭐️ With 20+ years of hands-on software development and product design experience, I help founders and teams turn ideas into successful startups. My expertise spans Swift, SwiftUI, Objective-C, C/C++, and a deep background in Product Design (UX/UI/IxD/HCI/HF/UxD/IA). I specialize in: • Launching and scaling startups from concept to MVP and beyond
 • Building social networks, streaming platforms, e-commerce, utilities, and B2B solutions
 • Leading UX research to identify user needs and craft intuitive, market-fit products • Designing and architecting products that delight users and drive growth Whether you need a solo expert or a full team, I can take your vision from idea to launch—covering ideation, architecture, design, and development. I’m passionate about creating products people love, and I thrive on solving complex problems with simple, elegant solutions. Let’s build your next successful startup together. 🎯

  • Swift
  • iOS Development
  • Mobile App Development
  • Product Design
  • Startup Consulting
  • User Interface Design
  • User Experience Design
  • Apple TV Application
  • Mobile UI Design
  • Figma
  • Mac OS App Development
  • Human-Centered Design
  • Apple Watch Application
Tery S.

Temecula, California

$30/hr
4.9
762 jobs

Hello! I am Tery- an accomplished jewelry designer and manufacturer with an education in Fine Arts and Jewelry Design, as well as Gemology and Manufacturing, focusing on Creative Concepts and Collections. With 10+ years of Jewelry design and consultancy experience, I am ideally suited to fully support startups, designers, and Jewelers from initial designing to complete production. The great majority of my work is bespoke fine jewelry designing and custom work with extensive experience in manufacturing processes. Design wise I specialize in 3d cad jewelry design using a combination of 3d modeling software such as Rhino3d, Matrixgold, with jewelry industry standard specifications to insure that models are ready for production. Looking forward to working with you!

  • 3D Animation
  • Jewelry Design
  • 3D Rendering
  • 3D Modeling
  • Illustration
  • Design for Manufacturing
  • Gemstone
  • Sketch
  • Contract Manufacturing
  • Jewelry
  • Creative Direction
Julien G.

San Francisco, California

$75/hr
4.9
300 jobs

💎 Top 1% Expert-Vetted 🏆 Top Rated Plus ✅ 250+ projects delivered across fintech, SaaS, e-commerce, and enterprise products. 20 years of UX/UI design experience, including a decade as creative director at global agencies like Iris Worldwide London, HAVAS Paris, and Young and Rubicam New York. I design products that are not just visually sharp but strategically built to convert, retain, and scale. Ready to discuss your project? 𝘀𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 or schedule a quick call directly from my profile. I respond immediately. Below are my services: ✅ 𝗪𝗛𝗔𝗧 𝗜 𝗗𝗢 I cover the full UX/UI design lifecycle, from initial research and wireframing through to high-fidelity Figma prototypes and production-ready design systems. My web design work spans SaaS platforms, fintech dashboards, e-commerce, and mobile applications. Whether a client needs a complete product design overhaul or a focused UX audit, I bring the same structured, research-backed approach every time. Core UX/UI design services: product design strategy and UX architecture, complex wireframing and information hierarchy, rapid prototyping and interactive Figma components, design systems and UI libraries, user research and usability testing, heuristic analysis and CRO-focused UX audits, and creative direction including brand identity and visual language. Tools: Figma, Webflow, Sketch, Adobe XD, Illustrator, Photoshop, InVision, Axure, Hotjar, Mixpanel, Fullstory, Google Analytics, and UserTesting, Generative AI, Chat GPT, Nano banana, Claude, Gemini. ✅ 𝗞𝗘𝗬 𝗔𝗖𝗛𝗜𝗘𝗩𝗘𝗠𝗘𝗡𝗧𝗦 - 250+ UX/UI design projects completed with a consistent 5-star track record across the US, Europe, and Asia. - Recent highlights: a fintech core banking platform for Omniwire, simplifying complex issuer workflows into an intuitive product design across multiple markets. - A personal finance web application for MoolaX where the UX design reduced onboarding drop-off by restructuring information hierarchy and simplifying the dashboard UI. - A full product design and web design build for Austrian Audio, turning a high-end audio brand into a conversion-optimized e-commerce experience across desktop and mobile. ✅ 𝗪𝗛𝗔𝗧 𝗦𝗘𝗧𝗦 𝗠𝗬 𝗨𝗫/𝗨𝗜 𝗔𝗣𝗔𝗥𝗧 Most UX/UI designers are strong on research or strong on visuals. After 20 years across product design and creative direction, I bring both. Agency work trained me to design for persuasion and brand impact. Product design across 250+ projects taught me to design for clarity, retention, and real user behavior. The result is UX/UI work that looks considered, converts visitors, and gets built the way it was designed. ✅ 𝗖𝗢𝗥𝗘 𝗙𝗢𝗖𝗨𝗦 The clients I work best with are product teams and founders who need a UX/UI designer operating at both strategic and execution levels. I am equally comfortable running a UX audit, building a design system from scratch in Figma, or owning the full web design process from brief to handoff. My creative direction background means I think about brand, narrative, and conversion alongside usability. Industries: fintech and banking, SaaS and B2B platforms, e-commerce, healthcare, media, and enterprise software. ✅ 𝗠𝗬 𝗔𝗣𝗣𝗥𝗢𝗔𝗖𝗛 Every UX/UI design engagement starts with understanding the problem before opening Figma. I run a discovery phase covering user goals, business constraints, existing UX patterns, and competitive positioning. Wireframing and UX architecture come before any visual UI design decisions. This prevents the most expensive mistake in web design: building beautiful interfaces on top of broken user flows. I work in tight feedback cycles and deliver annotated Figma files with developer handoff specs, component documentation, and interaction notes so nothing gets lost between design and engineering. ✅ 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘 𝗕𝗬 𝗔𝗥𝗘𝗔 SaaS and Fintech Product Design: Core product experiences for fintech platforms, banking dashboards, and data-heavy SaaS products where UX/UI design must make complex information readable and actionable. Every engagement starts with UX research and flow mapping in Figma before UI design begins. Web Design and E-commerce: Brand-led marketing sites, conversion-optimized landing pages, and full e-commerce UI including product pages, checkout flows, and mobile web. CRO principles and A/B testing applied wherever performance data is available. Mobile App and Responsive UX/UI: Mobile-first UX/UI for iOS and Android with gesture-based interaction design, scalable component systems, and design consistency from mobile to desktop. Creative Direction and Brand: Brand identity, visual language, logo design, and strategic positioning work that connects product design to business narrative. 🚀 SKILLS - Web Design - Figma - User Interface Design - UX & UI - User Experience Design - Mobile App Design - Generative AI (Chat GPT, Clause, Genini..) 💡 Want a free UX/UI audit before we discuss scope? Send me a message, I reply immediately.

  • UI/UX Prototyping
  • Figma
  • WordPress
  • Webflow
  • Mobile App Design
  • Responsive Design
  • Shopify
  • Brand Identity
  • Brand Identity Design
  • Web Design
  • UX & UI Design
  • WordPress Website Design
  • Wireframing
  • User Experience Design
  • User Interface Design
  • Web Development
  • Landing Page
  • HTML
  • CSS
  • Graphic Design

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Prototype Designer in California on Upwork?

You can hire a Prototype Designer in California on Upwork in four simple steps:

  • Create a job post tailored to your Prototype Designer project scope. We'll walk you through the process step by step.
  • Browse top Prototype Designer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Prototype Designer profiles and interview.
  • Hire the right Prototype Designer for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Prototype Designer?

Rates charged by Prototype Designers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Prototype Designer in California on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Prototype Designers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Prototype Designer team you need to succeed.

Can I hire a Prototype Designer in California within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Prototype Designer proposals within 24 hours of posting a job description.