David Martinez Gil

AI &
Software
Engineer

I'm David Martinez Gil — I build custom AI-powered software, from LLM agent platforms to production GPU infrastructure. Let's turn your idea into working software.

PythonPyTorchLangGraphCUDAC/C++FastAPINext.jsReactDockerPostgreSQLGitx86 AssemblyvLLMLangChainSupabaseRedisTelnyxWhatsApp APITauripgvectorOpenAIROS2LIDAROllamaChromaDBTensorFlow
PythonPyTorchLangGraphCUDAC/C++FastAPINext.jsReactDockerPostgreSQLGitx86 AssemblyvLLMLangChainSupabaseRedisTelnyxWhatsApp APITauripgvectorOpenAIROS2LIDAROllamaChromaDBTensorFlow
VALUE

Is your business reaching
its full potential?

Most businesses have untapped opportunities hiding in their daily workflows. I help you find them and build the software to capture them.

01 — Diagnose

Identify Opportunities

I map your workflows and spot where time, money, and data are slipping through the cracks. From manual spreadsheet work to disconnected systems — I find what's holding you back.

02 — Build

Build the Solution

Custom software tailored to your process — from AI-powered document processing and automation pipelines to intelligent tools that replace hours of manual work.

03 — Deliver

Deploy & Scale

Production-grade software your team uses every day. Not a prototype, not a demo — real infrastructure, real results, with ongoing support as your needs grow.

Not sure where to start? I'll take a look — no strings attached.

I review your current workflows and draft a concrete proposal with what I'd improve, the tools I'd use, and the results you can expect. Zero commitment.

WORK

My most Crafted

Projects

AIBack To Basic Solutions S.L.

AI-Powered Business Platform

End-to-end AI platform that transforms how an insurance company processes documents, detects fraud, and manages cases — replacing manual workflows with intelligent automation.

FastAPIReactNext.jsLangChainvLLMPostgreSQLpgvectorDockerPythonTypeScript
  • Anti-hallucination engineering for reliable LLM outputs in business-critical workflows
  • Private GPU infrastructure with full data sovereignty — no client data leaves the premises
  • RAG-powered knowledge base with source attribution for trustworthy search
  • Real-time streaming analysis that replaces slow batch processing
TechnicalSelf-employed Venture

AI Voice Agents for SMBs

Multi-channel AI voice and messaging system for SMBs — restaurants, clinics, and service businesses. Customers book, ask questions, and get support through phone calls and WhatsApp, handled entirely by an AI agent.

FastAPINext.jsTelnyxWhatsApp APISupabaseRedisDockerPythonTypeScriptSQLAlchemy
  • 24/7 customer handling — no missed calls, no unanswered messages
  • Multi-tenant design that scales across businesses without extra development
  • Natural conversation flow that feels human, not robotic
  • From prototype to paying clients — built, deployed, and commercialized end-to-end
ResearcherFIB-UPC (Polytechnical University of Catalonia)

LLM Multi-Agent Coordination

Research on coordinating LLM-based agents towards a shared goal, investigating memory architectures, inter-agent communication protocols, and explainability mechanisms in tool-rich environments.

PythonLLM AgentsMulti-Agent SystemsPyTorchLangGraph
  • Novel approach to agent memory and communication
  • Explainability in multi-agent LLM systems
  • Tool-rich environment orchestration
  • Academic research with real-world applicability
SKILLS

Skills & Tools

What I bring to the table — from high-level AI capabilities to the specific tools I use to deliver.

Capabilities

LLM Architecture & Deployment

Full understanding of transformer architectures, quantization, and local/remote deployment strategies

Agent Systems & Orchestration

Multi-agent coordination, tool calling, memory architectures, and agentic workflows

Prompt & Context Engineering

Designing reliable prompts, anti-hallucination stacks, and structured output pipelines

AI Security & Safety

Security assessments, data sovereignty, PII redaction, and compliance-aware AI systems

GPU Computing & Infrastructure

CUDA programming, private GPU server setup, and inference optimization with vLLM

Full-Stack Development

End-to-end product delivery — from database design to production frontend

Mobile Development

Native apps for iOS (Swift/Xcode) and Android (Kotlin), from concept to App Store / Play Store

Database Design & Management

Schema design, query optimization, migrations, and production database administration with PostgreSQL, MySQL, and Supabase

AI Workflow Automation

MCP servers, n8n automation, AI tool integration, and end-to-end pipeline orchestration

Tools & Frameworks

Python
PyTorch
C/C++
CUDA
LangGraph
Docker
PostgreSQL
Git
Next.js
FastAPI
React
Claude API
Swift
TensorFlow
Supabase
Redis
Ollama
x86
x86 Assembly
JOURNEY

My Professional Journey

A journey through my experience and professional growth in the technology world.

2008-2017

Kumon Mathematics Program

Kumon Center Castelldefels, Barcelona

Completed comprehensive mathematics program developing strong analytical and problem-solving skills through self-learning methodology.

MathematicsSelf-LearningProblem Solving

2018-2020

High School Diploma

St. Gabriel's School Viladecans, Barcelona

Graduated ranked 1st among all students. Completed Scientific Itinerary with focus on mathematics and technology. Foundation for pursuing computer engineering studies.

Scientific ItineraryMathematics

2019

Excellence Program "Bojos per la Supercomputació"

Barcelona Supercomputing Center (BSC)

Selected for the 1st Edition of the "Crazy for Supercomputation" excellence program, organized by BSC and Fundation Catalunya-La Pedrera.

SupercomputingExcellence Program

2020-2021

Bachelor's in Biomedical Engineering (1st Year)

Pompeu Fabra University, Barcelona

Completed first year of Biomedical Engineering before transitioning to Computer Engineering, gaining valuable interdisciplinary knowledge in biology and medicine.

Biomedical EngineeringBiology

2020

Bachelor's in Computer Engineering

Faculty of Informatics Barcelona (FIB-UPC)

Started Bachelor's in Computer Engineering, specializing in Computer Science with focus on AI, distributed systems, and software architecture. Expected completion in 2026.

Computer EngineeringComputer ScienceFIB-UPC

2021-2022

CUDA Certifications by NVIDIA

NVIDIA Deep Learning Institute

Obtained multiple professional certifications in CUDA computing with Multiple GPUs and CUDA applications in Deep Learning topics.

CUDADeep LearningMulti-GPUNVIDIA

2025

Exchange Year Abroad

Technische Universität Wien, Vienna, Austria

International academic exchange program at one of Europe's leading technical universities, gaining international experience and advanced knowledge in computer science.

TU WienInternational ExchangeAustria

AI Engineer Intern

HP Inc., Sant Cugat del Vallès, Barcelona

Part-time internship working on AI engineering projects at one of the world's leading technology companies.

AI EngineeringHP Inc.Part-time

AI Solutions Engineer & Project Lead

Back To Basic Solutions S.L., Castelldefels

Part-time position building entire custom AI-based software stack from scratch, including setting up private GPU infrastructure.

AI SolutionsProject LeadGPU InfrastructureFull Stack

2026

Technical Lead - AI Voice Agents Venture

Self-employed

Built and commercialized custom AI voice infrastructure for SMBs, mainly restaurants. Leading technical development and business management.

AI Voice AgentsTechnical LeadEntrepreneurshipSMB Solutions

Bachelor's Degree Thesis

Faculty of Informatics Barcelona (FIB-UPC)

Title: "Coordinating LLM-Based Agents towards a goal: Memory, Communication, and Explainability in Tool-Rich Environments"

LLM AgentsAI ResearchMulti-Agent SystemsThesis

HAVE AN
IDEA IN
MIND?Reach out

Schedule a call

dgilmartinez@icloud.com