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Angelo Guzman MaeseAG

Angelo Guzman Maese

Lead IT & Senior Full Stack AI Engineer | Expert R&D

€385/day
Madrid, ES
15+ years

Average response time: 24 hours

Freelancer profile translated to English.
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About Angelo

Architect of cutting-edge AI solutions and automation expert. 20 years of experience, 800+ projects delivered.

About Me
With two decades at the forefront of technological innovation, I don't just code: I build the intelligent systems of tomorrow.

I specialize in creating ecosystems where AI is not just a gadget, but a growth engine, using RAG (Retrieval-Augmented Generation) architectures to connect LLMs.

Technical Expertise & Trendy Stack
Generative AI & LLMs: Implementation and fine-tuning of models (OpenAI, Claude, Mistral, Llama).

RAG Architectures: Setting up vector databases (Pinecone, Weaviate, Milvus) for ultra-precise contextual AI.

AI Orchestration: LangChain and LlamaIndex expert for creating autonomous agents and complex workflows.

Automation & Low-Code: Building advanced automation pipelines with n8n and Make (formerly Integromat) to connect AI to all your business tools (CRM, ERP, Slack, etc.).

Lead IT & Architecture: Strategic vision to transform legacy infrastructures into modern "AI-First" systems.

Why Choose Me?
The bridge between two worlds: My mastery of modern tools (n8n, LangChain) combined with 20 years of classic Full Stack experience guarantees solutions that are both innovative and perfectly stable.

RAG Mastery: I know how to make LLMs intelligent by feeding them your own data, eliminating hallucinations and maximizing relevance.

Speed of Execution: My long career allows me to deliver MVPs in record time while anticipating future scalability needs.

Ready to integrate AI into the heart of your strategy? Contact me to transform your workflows with the latest market technologies.

Generative AI, LLM, RAG, LangChain, n8n, Make, Automation, Full Stack, Tech Lead, Cloud Architecture, Python, Node.js, AI Agents.
  • Spanish

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Nowo.tech
    Senior Backend Engineer (PHP + Symfony)
    April 2025 - July 2025 (3 months)
    Manzanares, CM, Spain
    Led Migration & Upgrades: Successfully upgraded from Symfony 6.4 to 7.3 and PHP 7.2 to 8.4 across a strongly-typed codebase spanning over 10,000 files, encompassing multiple subprojects including a developer backoffice and core API client services.

    My work focused on delivering scalable, high-quality solutions while fostering collaboration and mentoring team members to achieve technical excellence.
  • Malt
    Freelance Advisory Board Member
    May 2023 - Today (3 years and 3 months)
    Malt is the marketplace where ambitious freelancers and project owners come together, through tools that let them connect easily. With over 60,000 clients and 500,000 freelancers, Malt is the largest European platform for finding and hiring expert freelancers.
  • BASF
    Senior Backend Engineer - AI Solutions - Services & Core (Partner)
    AGRICULTURE
    July 2022 - October 2022 (3 months)
    Madrid, Spain
    External Consultant - Senior Backend Engineer - AI Solutions - Services & Core (Partner) | GKE/K8 (BASF)

    Develop internal application based in Node + Express + Nuxt.

    Creation of pipelines with Gitlab (3 different environments with several stages).

    Creation of unit testing, integration testing and acceptance testing with jest, mocha, chai, expect and serenity/JS

    Integration with big volume databases in MongoDB and Postgres SQL. Definition of schemas and models for big performance queries.

    Import and export functions with HANA SAP (over almost 1 million records) with dev and master environments.

    Minor updates and collaborations of internal docker images for MongoDB, Nginx, Alpine, Ubuntu and CentOS

    Deploy with Kubernetes and Rancher with nginx apps based in node + express.

    Creation of internal documentation and workshops for the rest of the team.

    Daily scrum meetings.

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