I ship SaaS from concept to production. I've launched two multi-tenant SaaS products, one for a client, and one of my own. I own and maintain an e-commerce platform with 50+ live stores, which collectively did over $6M in gross sales through the platform in 2025, plus a stack of client builds across various technologies and programming languages. If "DevOps" and "backend" feel like two different hires you can't afford, Hi!, I'm both of them.
Recent accomplishments:
* Maintain and modernizing a multi-tenant e-commerce platform in PHP with 50+ stores.
* Led the creation of a mult-version X12 EDI SaaS platform from scratch and shipped it.
* Designed AS2/SFTP/FTP file transfer pipelines with stability and fault-tolerance in mind.
* Maintain Linux, Docker, CI/CD, monitoring, and incident response on production systems.
* Led a small engineering team, providing guidance, code review, and subject matter.
I enjoy working most on:
* Multi-tenant SaaS applications using Laravel and Livewire or React
* ERP / EDI / API integration projects (Acumatica, X12, REST, etc.).
* Docker deployments using IaC tools, such as Ansible, that are reproducible and observable.
* Long-running platform engagements where a founder wants one person who can actually own the whole stack.
"Samuel has worked on several projects for us over the years and he is my first choice when we need additional development help. He's experienced, can tackle complexity, and is a quick learner when we give him anything new. Great communicator, totally trustworthy, and a great dev." - Tyler S.
Ideal engagement: $5k+, 4+ weeks, founders or tech leads who want a senior partner on backend, infrastructure, or both.
Drop a line or two (what you're building and what's blocking you). I'll reply during US business times.
SaaS Development
Electronic Data Interchange
PHP
Laravel
ASC X12
Dell Boomi
WordPress
Claude
MySQL
CSS
JavaScript
API
HTML5
Shopify
Python
Shopify Apps
C#
Docker Swarm Mode
Acumatica
CI/CD
Mark C.
Freeland, Washington
$60/hr
5.0
1 jobs
Several years of software development experience allows me to very quickly digest new problem domains while translating end-user requirements into the flesh and blood of a new software system. My focus is on native iOS applications, along with the creation of associated back-end systems. Another passion is integrating mobile applications with various embedded devices (usually via Bluetooth LE).
Most of my software projects involve designing and implementing three-tier systems using various technologies within a mix of Linux and embedded platforms.
On the back-end, I have implemented RESTful web services (via Python Flask and Jersey).
In the past, system management scripts would have been coded in bash; however these days I use Python for non-trivial tasks.
My embedded projects have included devices such as Arduino, Multitech MTCDP, Raspberry Pi, and the Telit GE864-Quad SOC.
I am comfortable interfacing with all of the major relational database systems, with strongest knowledge in MySQL, PostgreSQL, and SQL Server. In the NoSQL space, I have detailed experience with Mongo. For mobile / embedded device persistence I typically use SQLite. My database design skills are moderately good.
Over the last few years, Cloud-based environments have proved important on almost all of my projects; thus, I am comfortable integrating with cloud computing stacks: AWS (EC2 & S3), Azure, Exosite, and Parse.
iOS
SwiftUI
Objective-C
Claude
Python
MySQL
Docker
Amazon EC2
Linux
Swift
NoSQL Database
Web Services Development
Arduino
Raspberry Pi
macOS
Bluetooth LE
Victor B.
Auburn, Washington
$125/hr
5.0
35 jobs
๐ฅ TOP 3% Upwork
๐ TOP 1% Mechanical Engineering and Product Development
๐ TOP 5% System Intergration
Summary:
I help startups, entrepreneurs, and established companies bring their physical product ideas to life โ from a napkin sketch to a market-ready product โ through elite Product Design, Mechanical Engineering, and Prototyping services, without the typical manufacturing headaches or communication gaps.
I operate through arshop LLC, a registered LLC, which allows clients to work with a structured engineering practice rather than an informal solo freelancer. This means clear project scope, professional documentation, organized billing, and a more reliable process for product development, prototyping, and manufacturing support.
๐น 100+ products designed, prototyped, and launched
๐น $10M+ in collective client product revenues
๐น Products accepted by REI, used in aerospace, consumer electronics, and robotics
๐ฃ "Viktor is the secret weapon behind our hardware product success โ his expertise saved us months of trial and error. Best mechanical engineer Iโve worked with."
๐ If this sounds like what you need, invite me to your job to schedule a free discovery call.
Why Clients Choose Me:
๐ ex.Meta, Amazon, Toyota โ precision engineering meets real-world manufacturing
๐ฉ Full-stack expertise: Mechanical, Electromechanical, Robotics, Prototyping
๐ Strategic thinker: I donโt just build โ I help optimize for cost, scale, and aesthetics
๐ ๏ธ Direct supplier connections: I can guide you from CAD to factory floor
๐ข Registered LLC โarshop LLC, structured engineering practice with professional project management, documentation
๐ Invite me to your job to book a free discovery call.
Services & Solutions:
โ End-to-End Product Development โ from napkin sketch to mass production
โ Product Design, Industrial Design, Concept Design, Mechanical Design, Electronic Design, Engineering Design
โ Mechanical Engineering & Electromechanical Systems: actuators, sensors, control systems
โ Advanced Product Roadmap & Product Management โ from MVP to scalable products
โ 3D Design, 3D Modeling, 3D Rendering, 3D Texturing, Visualization for Pitch Decks & Marketing
โ Design for Manufacturing (DFM), Design for Assembly (DFA), DFx: optimizing for cost, reliability, and scalability
โ Finite Element Analysis (FEA), Structural & Thermal Simulation for durability and performance
โ Rapid Prototyping: 3D Printing, CNC Machining, Sheet Metal, Welding, Injection Mold Design, fabrication
โ PCB Design: Circuit Design, Mechatronics PCB, High-speed Digital & RF PCB Design
โ Embedded Systems: Microcontroller Programming, Embedded System 3D Modeling, Raspberry Pi, Arduino
โ Electronics Prototyping & Low-volume Manufacturing
โ CAD Modeling, Drafting, Technical Documentation (Autodesk AutoCAD, Fusion 360, SolidWorks)
โ Robotics & Automation Solutions: Industrial Robotics, Custom End Effectors, Industrial Design Robotics Engineering
โ Aerospace-grade Engineering: precision tolerances, lightweight structures
โ Consumer Electronics & IoT Device Development
โ Retail & Consumer Goods, Sports & Recreation Equipment Design (incl. Footwear Design)
โ Manufacturing Consulting: supply chain optimization, Design Transfer to Factory, Capital Equipment Evaluation
โ Operations Management Software integration for production scaling
โ Quality Control Process Design, Reliability Testing, HALT/HASS methodologies
โ Sustainability Consulting: Design for Repair, Modular Design, Materials Optimization
Tech Stack:
SolidWorks, Autodesk Fusion 360, Autodesk AutoCAD, DraftSight
CAD & CAM software suites (Printer Automation Experience CAD & CAM Software)
FEA Tools: ANSYS, SolidWorks Simulation, Fusion 360 Simulation
PCB Design Tools: Altium Designer, KiCad, Eagle PCB
Embedded Development Platforms: Arduino, Raspberry Pi, ESP32, STM32
Programming: C/C++, Python (for automation and prototyping), MicroPython
3D Printing: SLA, SLS, FDM technologies
CNC Machining (multi-axis), Sheet Metal Fabrication, Injection Molding workflows
3D Rendering & Visualization: Blender, KeyShot
Prototyping labs network in US & Asia for fast iteration
Supply Chain & Manufacturing Management: Factory Collaboration Platforms
Quality & Reliability Tools: ISO standards application, DFMEA, PFMEA
Operations Management Software: Odoo, Katana MRP
Collaboration Tools: Notion, Slack, Trello, ClickUp
Supplier Network in the US and Asia
๐ Invite me to your job to schedule a FREE discovery call and letโs make your product a success.
Product Design
3D Design
3D Modeling
Product Development
Mechanical Engineering
Autodesk AutoCAD
SolidWorks
Engineering Design
Industrial Design
Concept Design
Mechanical Design
CAD
Electronic Design
Design for Manufacturing
Manufacturing & Construction
Kevin K.
Vancouver, Washington
$125/hr
4.9
57 jobs
Iโm Kevin. I design things. Over the last ten years I have taken over twenty commercial products from concept to manufacture while navigating startup challenges along the way. I am โpracticalโ above all else. A team player and easy to communicate with, I am able to take rough concepts and deliver them as working products or prototypes with minimal cost and hassle.
My specialty is electronic hardware design, though most projects involve physical or mechanical parts as well. This is my full time job, working from my dedicated workshop near Portland, Oregon. I have in-house capability for most aspects of bringing up new designs and fabricating one-off devices or prototypes. We have high resolution SLA 3D printing (UV resin), a large 4x8โ production CNC machine suitable for plastics and most aluminum, and plenty of bench/floor space for your project. I have relationships with various local machine shops and test labs, so extra support is convenient if needed.
I work in Altium Designer for schematic and PCB board layout, and use Solidworks or Autodesk Fusion for physical component design and working with complex physical assemblies. I have designed many injection molded parts, stamped metal parts, etc.
Many of my products involve radio so Iโm familiar with the FCC test lab process for both module based radios and custom designs. I have designed Internet of Things IoT products, wireless mesh networking, and low cost proprietary point to point radios.
I am intermediate level coding on small 8 to 32 bit microprocessors in C,C++. My code is extremely "human readable" and cleanly documented. I have solid experience with Mircochip PIC processors, Atmel, STM32, and MSP430. I have written several low level handlers for custom board hardware and protocols.
If youโre looking for a competent person that is easy and reliable to work with, and who will handle your project as if it were their own, letโs chat and see what happens.
Electronics:
-Embedded Hardware Design
-PCB Circuit Board Design
-Low-level Microprocessor Coding, C, C++, Python
-Radio Wireless Communications and Certification
-Internet of Things, IoT, Mesh Networking, Zigbee
-Robotics
-Automation
-Short Run PCB Assembly
-Prototyping and Test Fixtures (in house)
-Reverse Engineering, Proprietary Protocols
-Testing, Debugging, Product Validation
Mechanical:
-Solidworks
-Autodesk Inventor / Fusion360
-Complex Assembly Design
-Process, Testing, and Assembly Fixtures
-Injection Molding
-High Resolution SLA 3D Printing (in house)
-CNC Machining (in house)
-Industrial Processing Fixtures
-Plastics Fabrication (Tanks, Jigs, Wet Processing, etc.)
-Rapid Prototypes and 3D Printing for Industrial Parts
-Moving Parts, Gearing, Bearings, etc.
Support Services:
-Connections with Contract Manufacturers
-Crowdfunding, I've raised approx $400k via Kickstarter, Indiegogo
-Relationships with Asian and China Manufacturers
-Injection Molding & Stamped Metal Parts from Asia
-Patent Experience (I hold 7 Patents)
Mechanical Design
Product Development
3D Printing
SolidWorks
Hardware Prototyping
Product Design
Electronic Design
Electrical Engineering
Injection Mold
RF Design
PCB Design
Circuit Design
Arduino Firmware
Firmware
Umair U.
Seattle, Washington
$50/hr
5.0
10 jobs
๐ ๐๐ฎ๐ข๐ฅ๐ ๐๐ ๐ฏ๐จ๐ข๐๐ ๐๐ ๐๐ง๐ญ๐ฌ ๐ญ๐ก๐๐ญ ๐๐ง๐ฌ๐ฐ๐๐ซ ๐๐๐ฅ๐ฅ๐ฌ, ๐๐จ๐จ๐ค ๐๐ฉ๐ฉ๐จ๐ข๐ง๐ญ๐ฆ๐๐ง๐ญ๐ฌ, ๐๐ง๐ ๐ช๐ฎ๐๐ฅ๐ข๐๐ฒ ๐ฅ๐๐๐๐ฌ, ๐๐ง๐ ๐๐๐ ๐ฌ๐ฒ๐ฌ๐ญ๐๐ฆ๐ฌ ๐ญ๐ก๐๐ญ ๐ญ๐ฎ๐ซ๐ง ๐ฅ๐๐ซ๐ ๐ ๐๐จ๐๐ฎ๐ฆ๐๐ง๐ญ ๐ฅ๐ข๐๐ซ๐๐ซ๐ข๐๐ฌ ๐ข๐ง๐ญ๐จ ๐ข๐ง๐ฌ๐ญ๐๐ง๐ญ, ๐๐๐๐ฎ๐ซ๐๐ญ๐ ๐๐ง๐ฌ๐ฐ๐๐ซ๐ฌ
One recent build: a voice AI agent for a restaurant that cut reservation handling time and boosted on-call scheduling by 50%, live in just 2 weeks.
Over the last 6+ years, I've helped startups and established companies launch, scale, and improve software products, combining strong full-stack engineering with practical AI solutions that solve real business problems.
Have an idea for an AI agent or assistant, but not sure where to start?
Send me a message, and we can schedule a ๐๐ฅ๐๐ ๐๐ผ๐ป๐๐๐น๐๐ฎ๐๐ถ๐ผ๐ป where Iโll help you clarify the idea, answer your questions, and outline the best way to build it.
๐ช๐ต๐ฎ๐ ๐ ๐ข๐ณ๐ณ๐ฒ๐ฟ:
โข Voice AI Solutions for inbound/outbound calls (Twilio, Deepgram, ElevenLabs, OpenAI Realtime)
โข AI implementation and automation built into real workflows
โข SaaS applications (MVP to scalable platforms)
โข Full-stack web and mobile builds across React, Next.js, Python, and Flutter
โข CRM/ERP Integration, MCP Expertise, RAG, and internal tools
โข Cloud infrastructure on AWS, GCP, and Azure
๐ช๐ต๐ ๐ช๐ผ๐ฟ๐ธ ๐ช๐ถ๐๐ต ๐ ๐ฒ:
โข Built an AI voice agent for a restaurant that cut reservation handling time and increased on-call scheduling by 50%, live in 2 weeks
โข Delivered 50+ client websites (each in under a week) and full mobile apps branding to deployment in 6 - 8 weeks
โข Built AI-powered data ingestion and document processing automations for a consulting firm serving 500+ clients
โข Currently building a proprietary computer vision safety system that runs on existing CCTV and flags workplace hazards in real time
โข Shipped 5 startup products across hospitality, professional services, real estate, fintech, and logistics
If you need an AI product, SaaS platform, web app, chatbot, RAG assistant, automation workflow, dashboard, or an existing system improved, send me a message and Iโll help you figure out the best way to build it.
๐ฌ Feel free to hit the "๐๐ก๐ฉ๐๐ง๐" button.
Available to Start Immediately.
Artificial Intelligence
AI Development
Full-Stack Development
Automation
AI Agent Development
Python
AI App Development
React
Node.js
Next.js
Twilio
Machine Learning
n8n
AI Chatbot
SaaS
Retrieval Augmented Generation
LLM Prompt Engineering
Flutter
Conversational AI
Automated Workflow
Jose S.
Renton, Washington
$40/hr
5.0
1 jobs
I'm an audio engineer, music producer, and DJ experienced in helping artists bring their music to a professional release standard. Whether you need a polished master for streaming platforms, a club-ready record, or feedback to elevate your mix, I can help.
- Professional stereo mastering for EDM, House, Pop, Hip-Hop, and more
- Experience as a released artist with 250,000+ streams across SoundCloud and major DSPs
- Fast turnaround, clear communication, and attention to detail
Regular communication is important to me, so let's keep in touch.
Music Production
Product Design
Specifications
Audio Engineering
Audio Mastering
Sound Design
AI Agent Development
Sound Mixing
Audio Production
UX & UI
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