Tequila, Jalisco, MexicoOpen to opportunities

David Lozano Rodriguez

Senior Full Stack Developer | AI Engineer | Blockchain Architect

Senior Full Stack Developer Building Scalable AI, Web, and Blockchain Solutions

8+ years of experience designing and developing high-performance applications using JavaScript, TypeScript, Python, cloud technologies, AI workflows, and decentralized technologies.

Full Stack EngineeringAI / LLM DevelopmentBlockchain ArchitectureCloud InfrastructureTechnical Leadership

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About

Engineering leadership across AI, web, and decentralized systems

I am a Senior Full Stack Developer with 8+ years of experience building innovative web, mobile, AI, and blockchain applications. I specialize in designing scalable architectures, developing modern user experiences, and integrating emerging technologies into production systems.

8+ years software engineering

Full-stack architecture

AI training workflows

Blockchain systems

Team leadership

Cloud-native applications

Years Experience

20%

Team Quality Improvement

30%

Performance Optimization

99.95%

System Reliability

Technical Skills

A modern stack for production-grade systems

From frontend craft to AI evaluation pipelines and blockchain architecture — tools chosen for reliability at scale.

Frontend Engineering

React.jsNext.jsAngularVue.jsHTML5CSS3BootstrapTailwind CSSRedux

Proficiency78%

Backend Engineering

Node.jsNestJSExpressFastAPIDjangoSpring BootREST APIsGraphQLMicroservices

Proficiency84%

Featured capability

AI Engineering

SFTRLHFRLMFLLM Training DataPrompt EngineeringAI EvaluationCode Reasoning Models

Proficiency90%

Database & Infrastructure

PostgreSQLMySQLMongoDBRedisKafkaRabbitMQAWSAzureGCPDockerKubernetesTerraform

Proficiency78%

Blockchain

SolidityEthereumWeb3.jsSmart ContractsNFTsDeFiTruffleMultichainGovernance Tokens

Proficiency84%

Experience

Career & education

Ownership across AI evaluation, blockchain architecture, and full-stack delivery — grounded by a Computer Science foundation.

11/2024 – 01/2026

AI / LLMLatest11/2024 – 01/2026

Senior Python Developer

TuringTequila, Mexico

Produced SFT training data for code reasoning models
Improved LLM response quality through RLHF evaluation
Validated multi-turn feedback workflows
Reviewed AI outputs for correctness and safety
Led Cursor project pod activities
Improved team quality standards by 20%

08/2021 – 01/2023

Blockchain / Full Stack08/2021 – 01/2023

Senior Blockchain Architect & Full Stack Leader

Katana Inu / IBM Global ServicesRemote

Designed scalable blockchain gaming ecosystem architecture
Built microservices using Node.js, Java, and Python
Developed React, Angular, Vue applications
Created drone pilot video communication system
Developed audited governance token
Reduced database latency by 30%

11/2019 – 09/2020

Web3 / DeFi11/2019 – 09/2020

Senior Blockchain Engineer

Teahouse FinanceTaipei City, Taiwan

Developed Ethereum decentralized exchange applications
Built Solidity smart contracts
Integrated Web3 functionality
Improved user engagement by 20%

08/2017 – 06/2019

Full Stack08/2017 – 06/2019

Senior Full Stack Software Engineer

Sam's Technology CompanyHong Kong

Developed enterprise web applications
Built scalable backend systems
Improved reliability to 99.95% uptime
Reduced production defects by 30%

Education

Academic foundation

Bachelor's Degree Computer Science

University of Huddersfield

2013 – 2016

Featured Projects

Selected work across AI, Web3, and real-time systems

Production-minded builds spanning LLM evaluation, blockchain ecosystems, DeFi, and live communication.

Artificial Intelligence

AI Code Reasoning & LLM Evaluation Platform

Developed and evaluated AI training workflows including SFT, RLHF, and RLMF processes to improve code reasoning model performance.

PythonLLMsPrompt EngineeringAI EvaluationData Quality

Reasoning · Evaluation · Safety

Web3 / Blockchain

Blockchain Gaming Ecosystem

Architected a scalable blockchain ecosystem for online RPG gaming with smart contracts, NFTs, and multichain capabilities.

SolidityEthereumWeb3.jsNode.jsReact

Architecture · NFTs · Multichain

DeFi

Decentralized Trading Platform

Built decentralized exchange applications integrating Ethereum smart contracts and Web3 interfaces.

ReactSolidityTruffleEthereum

Trading · Liquidity · On-chain UX

Real-Time Application

Drone Pilot Communication Platform

Created a video communication system for drone pilots using modern frontend technologies and communication APIs.

ReactTwilioWebSockets

Video · Latency · Reliability

Engineering Approach

How I ship reliable systems

A consistent mindset for architecture, intelligence, performance, and security.

Architecture First

I design systems with scalability, maintainability, and reliability in mind.

AI Innovation

I integrate modern AI workflows to create intelligent applications.

Performance Driven

I optimize applications for speed, reliability, and user experience.

Security Focused

I build secure applications following industry best practices.

Contact

Let's build something exceptional

Open to senior engineering roles, technical leadership, and high-impact AI or Web3 collaborations.

94davidflw@gmail.com

+52 324 126 1831

david-lozano-1846562b4

GitHub

proteus1208