Development, Engineering & Design Services
I’m Marfin, a developer, engineer, and designer based in Indonesia. I offer remote services to businesses and product teams worldwide, covering full-stack development, cloud and AI integrations, IoT prototypes, workflow automation, and UI/UX and 2D/3D design.

Freelance serviceWeb development
Company websites, online stores, dashboards, and web apps built with Next.js, React, or Laravel. The stack depends on your content, users, and existing systems.
What you receive
- Responsive pages and reusable components
- Accounts, checkout, or admin tools as your project requires
- Technical SEO and multilingual content setup
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Freelance serviceUI/UX design
Website and mobile app interfaces, from user flows and wireframes to Figma prototypes. Design work can be a separate engagement or part of a development project.
What you receive
- User flows and wireframes for key tasks
- Interactive prototypes and responsive screen designs
- Design systems and components for developer handoff
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Freelance serviceCloud & API integrations
Connect your web app to authentication, payment processing, and other APIs. Google Cloud and serverless tools support deployment and application features where they fit.
What you receive
- API connections for application features
- Authentication and session handling
- Cloud deployment and serverless application setup
Related work

Freelance serviceAI integration
AI assistants and website chatbots that answer visitor questions and guide users through your product. Integration work can include Dialogflow conversation flows and connections to your application's APIs.
What you receive
- Chatbot integration for your website or app
- Conversation flows and intent handling
- API connections for the assistant's agreed tasks
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Freelance serviceIoT prototyping
Sensor-based prototypes for room monitoring and connected devices. Firmware, data flow, and dashboard setup can be scoped remotely around the hardware you have available.
What you receive
- Sensor integration and microcontroller firmware
- Cloud or mobile dashboards for sensor readings
- Wiring notes and setup instructions
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Freelance serviceAutomation
Scripts and API workflows for collecting data and handling repetitive tasks. We define the inputs, outputs, and systems involved, then build a workflow your team can run and maintain.
What you receive
- Data collection and structured exports
- API workflows between existing tools
- Scheduled scripts and handover documentation
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Freelance service2D design
Brand identity, print layouts, and marketing artwork for a new visual direction or an existing brand. Projects can include brand guidelines, calendars, packaging, and campaign graphics.
What you receive
- Logo and vector artwork for brand assets
- Print-ready layouts and marketing graphics
- Brand guidelines and editable source files
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Freelance service3D design
3D models and architectural visualizations for homes, retail spaces, and commercial concepts. SketchUp and V-Ray help communicate materials, lighting, and layouts before a project is built.
What you receive
- 3D models for spatial and architectural concepts
- Material and lighting studies
- Rendered views for presentations and design reviews
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Working together remotely
Send a short brief with what you want to build, who will use it, and any existing website, design files, or hardware setup. Include your time zone, target launch date, and budget range so we can discuss a scope that fits. We agree on deliverables, review points, and a schedule before work begins.
You can also review my experience and certifications and training before getting in touch.