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Aleksa KaracAK

Aleksa Karac

Full-Stack Developer & AI/ML Engineer

€520/day
Arnsberg, DE
3-7 years

Average response time: 1 hour

About Aleksa

I build high-performance web applications and AI-powered tools that help businesses grow.


What I deliver:
  • Award-quality websites with stunning animations (GSAP, Three.js, WebGL)
  • Full-stack applications from concept to deployment (React, Next.js, Node.js, Python)
  • AI/ML integration — from LLM-powered features to custom image/video generation pipelines
  • Custom CMS systems tailored to your exact workflow

Why clients choose me:
  • 5 years of hands-on development experience across 20+ projects
  • Rare combination of creative design sense and deep technical expertise
  • I handle everything end-to-end: frontend, backend, infrastructure, and AI
  • Strong communicator who delivers pixel-perfect results on time

Tech: React, Next.js, Svelte, Three.js, GSAP, Node.js, Python, Rust, PyTorch, Stable Diffusion, Docker, Kubernetes

I work with startups, SMBs, and individuals who need more than a template — they need something built right.

Ich entwickle performante Webanwendungen und KI-gestützte Tools, die Unternehmen voranbringen.


Was ich liefere:
  • Websites auf Awwwards-Niveau mit beeindruckenden Animationen (GSAP, Three.js, WebGL)
  • Full-Stack-Anwendungen von der Konzeption bis zum Deployment (React, Next.js, Node.js, Python)
  • KI/ML-Integration — von LLM-Features bis zu eigenen Bild-/Videogenerierungs-Pipelines
  • Maßgeschneiderte CMS-Systeme für Ihren Workflow

Warum Kunden mich wählen:
  • 5 Jahre praktische Entwicklungserfahrung in über 20 Projekten
  • Seltene Kombination aus kreativem Designgespür und tiefem technischem Know-how
  • Alles aus einer Hand: Frontend, Backend, Infrastruktur und KI
  • Starke Kommunikation und pixelgenaue Ergebnisse, pünktlich geliefert
  • German

    Native or bilingual

  • English

    Fluent

  • Serbian

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Freelance / Personal Projects
    AI/ML Engineer & Developer
    TECH
    June 2023 - Today (3 years and 1 month)
    Arnsberg, Germany
    Development of AI-powered tools and integration of machine learning models into production applications for image generation,
    video generation, and intelligent automation.

    • Built a custom Rust application for AI image and video generation using multiple model APIs (Flux, Qwen, LTX2, WAN, SeedReam, NanoBanana)
    • Set up and optimized local open-source AI model deployments using ComfyUI, Stable Diffusion, and Hugging Face models
    • Integrated LLM APIs (OpenAI, Anthropic) into web applications for intelligent features
    • Fine-tuned models using LoRA adapters for specialized client tasks
    • Designed and built complete AI pipelines from model selection through deployment and optimization
    Python Pytorch Rust Machine learning Stable Diffusion
  • Freelance / Various Clients
    Mobile Developer & Mobile-First Web Designer
    DIGITAL AND IT
    September 2022 - Today (3 years and 10 months)
    Arnsberg, Germany
    Mobile application development and mobile-first responsive web design, ensuring seamless user experiences across all screen
    sizes and devices.
    • Developed cross-platform mobile applications using modern frameworks and Rust-based tooling
    • Designed and implemented mobile-first, fully responsive web experiences with breakpoints optimized for 6+ device categories
    • Built touch-optimized interfaces with smooth animations and native-like performance
    • Ensured accessibility and usability standards across iOS and Android devices
    • Applied progressive enhancement strategies to deliver fast-loading experiences on mobile networks
    Responsive Design React.js CSS JavaScript Mobile development
  • Freelance / Various Clients
    IT Consultant & System Administrator
    DIGITAL AND IT
    September 2022 - Today (3 years and 10 months)
    Arnsberg, Germany
    End-to-end IT infrastructure solutions for small businesses, including physical network setup, server administration, and
    ongoing technical support.

    • Designed and installed physical LAN network infrastructure for business offices
    • Configured and maintained Linux servers for reliable day-to-day operations
    • Provided ongoing system administration, monitoring, and troubleshooting
    • Advised small business clients on IT strategy, hardware selection, and security best practices
    • Ensured minimal downtime through proactive maintenance and rapid issue resolution
    Linux Bash Docker Git CI/CD

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