You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Tawan ArunTA

Tawan Arun

Full-Stack & AI Engineer | LLM · RAG · Cloud

€600/day
Berlin, DE
8-15 years

Average response time: 1 hour

About Tawan

I started coding before Stack Overflow existed. Before GitHub. Long before AI could write a single line of code.
That matters, because today anyone can generate code. Few people actually understand it.
With 15+ years of real full-stack experience, I build AI-powered tools that work in production, not just in demos. I architect the pipeline, write the logic, manage the infrastructure, and deliver something a business can actually rely on.
For a long-term client, I developed an AI document intelligence pipeline that ingests press articles and PDFs, processes them through GPT, stores everything in Google Cloud, and surfaces structured multilingual summaries on the web. End to end. One person. Maintained and evolving. This is RAG in practice — custom-built, not off-the-shelf.
I've also built custom OCR tools using Claude Vision API, automated accounting workflows, e-commerce testing pipelines with Playwright, and QR code applications. Always with the same approach: clean architecture, maintainable code, real business value.
My clients include a major German e-commerce brand I've worked with since 2018 and an international audio manufacturer since 2022. I'm not the freelancer who disappears after launch.
I work across the full stack, PHP, WordPress, Docker, Kubernetes, GCP, and I integrate AI where it genuinely solves a problem, not where it looks impressive on a slide.
I work best with companies that need a senior technical partner for the long run. Someone who can build a custom AI tool in week one and still be there to improve it in month eighteen.
Based in Berlin. Fluent in English, French and German.
  • German

    Native or bilingual

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Berlin (up to 50km)

Experience

  • Anonyme
    Invoicing & Accounting Tool
    March 2026 - March 2026
    Built a client-side invoice scanning application using Claude Vision API for OCR and structured data extraction. The tool processes uploaded invoice images directly in the browser, extracts key accounting fields, and outputs structured data ready for DATEV EXTF import the standard German accounting exchange format.
    PHP Claude Vision API LLM Git
  • verifybot
    VerifyBot Automated E-Commerce Testing. Playwright & Cloud Architecture
    INTERNET OF THINGS (IOT)
    January 2026 - Today (5 months)
    Berlin, Germany
    Developed an automated payment pipeline testing service for e-commerce environments. The system runs end-to-end Playwright scenarios across multiple browser contexts, captures screenshots at each critical step, and generates PDF reports. Architected across two servers : a Cockpit control interface and a dedicated Playwright execution server with automated scheduling and environment management on Google Cloud.
    Google cloud Playwright Cloud Infrastructure
  • cue-r
    Cue-R QR Code Platform. Full-Stack Development & Shopify Integration
    RETAIL (SMALL BUSINESS)
    January 2025 - Today (1 year and 5 months)
    Berlin, Germany
    Built a complete QR code management platform + webapp integrating Shopify webhooks, real-time scan tracking, and a custom admin interface. Each purchase automatically generates a unique QR code linked to a user account. The system handles redirection logic, scan statistics with bot protection, and multi-scenario routing. PHP, MySQL, JavaScript.
    PHP AI Integration Docker

Recommendations

Be the first to recommend Tawan

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Master
    Weissensee Kunsthochschule Berlin
    2010
    Kunsthochschule Berlin-Weißensee Diploma in Visual Communication, Interactive Documentary and Web Development Graduated with distinction (1.0) from one of Germany's leading art and design schools. Final project combined interactive documentary filmmaking with full-stack web development, an early form of what is now called immersive storytelling or web documentary. Awarded the Franco-German Journalism Prize for interactive media work. Developed multiple interactive web projects combining narrative design, data visualization and custom development, at a time when this intersection barely had a name.
  • BTS Communication Visuelle
    Efficom Paris
    2005
    Two-year work-study program alternating between school and Epiceum studio (formerly Le Troisième Étage), a Paris-based graphic design studio. Hands-on training in print and web graphic design, working 2 Years on real client projects throughout the program.

Skill set

Categories