Hi, I'm

Diego Valenzuela

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I design and engineer scalable full-stack and AI systems, blending formal computer science foundations, distributed architectures, and modern LLM tooling into production-grade solutions.

About Me

Engineer, maker, and lifelong learner

Diego Pablo Valenzuela Palacios

I'm a Computer Science Engineer from Universidad del Valle de Guatemala focused on building scalable systems at the intersection of backend architecture and applied AI. My work combines strong formal foundations with hands-on experience delivering production-ready full-stack solutions.

Currently working as a Full-Stack Developer at Workly, contributing to a scalable payroll management platform. My primary focus is on building robust, performant frontend applications with React and Next.js, while also collaborating on backend services and architectural decisions to ensure reliable, production-grade systems.

Guatemala City, Guatemala
Open to opportunities
Problem Solver Systems Thinker Production-Oriented Engineer AI Practitioner

Experience

Where I have applied my skills professionally

Full-Stack Developer

Workly·Full-time
Jul 2024 – PresentPresent
Guatemala (Hty)

Contributing to the development and evolution of a scalable payroll management platform, focusing on modern frontend architecture and reliable backend services.

  • Migrated an existing MVP into a production-ready platform, improving performance, scalability, and maintainability
  • Developed and maintained core features using React, Next.js, MUI, Node.js, and NestJS with TypeScript
  • Designed and implemented new functionalities with efficient MongoDB integration
  • Collaborated with cross-functional teams to enhance UI/UX and ensure reliable production deployments
  • Contributed to architectural improvements to support system growth and long-term maintainability
ReactNext.jsTypeScriptNode.jsNestJSMongoDBMUI

Skills

Technologies and tools I work with

🎨

Frontend

ReactNext.jsTypeScriptMUITailwind CSSState ManagementREST Integration
⚙️

Backend & APIs

Node.jsNestJSExpressREST APIsWebSocketsMongoDBPostgreSQLAPI Design
💻

Languages

PythonTypeScriptJavaScriptC++CGoSQLBashJavaRust
🤖

AI & Machine Learning

PyTorchHugging Face TransformersLangChainOpenAI APISentence TransformersFine-tuning (LoRA)RAG PipelinesPrompt EngineeringVector Databases
☁️

Cloud & DevOps

AWS (EC2, S3, RDS, VPC)DockerGitHub ActionsLinuxNginxCI/CD
🔧

Systems & Networking

POSIX SocketsMultithreadingTCP/UDPProtocol DesignMemory ManagementOperating Systems InternalsConcurrency Control

Projects

A selection of what I have built

AIFeatured

ActionMiner Lite

AI-powered action item extraction from meetings and documents using LLMs.

PythonLLMsNLPFastAPIPrompt Engineering
2024View Details
CloudFeatured

CCBank

Cloud-native banking microservices deployed on AWS with full IaC infrastructure.

AWSEC2RDSLambdaCloudFormation+2
2024View Details
CompilersSystemsFeatured

CompilScript

Full compiler implementation for a custom scripting language with LLVM backend.

TypeScriptLLVMCompiler DesignASTType System
2024View Details
Backend

GercoRaunte

Restaurant management system with PostgreSQL backend and complex query optimization.

PostgreSQLPythonFastAPISQLDatabase Design
2023View Details
AIFeatured

LLM-Chat

Multi-model chat interface supporting GPT-4, Claude, and local Ollama models.

PythonReactOpenAIAnthropicOllama+2
2024View Details
AI

LLM-FP

Functional programming patterns applied to LLM pipelines for composable AI workflows.

HaskellPythonFunctional ProgrammingLLMsMonads
2024View Details
AI

MCP Chat

Distributed chat system built with a custom MCP (Message Control Protocol) over TCP/UDP.

PythonTCP/UDPNetworkingProtocol DesignConcurrency
2023View Details
AIFeatured

Phi-3 LoRA Fine-tuning

Fine-tuned Microsoft Phi-3 with LoRA adapters for domain-specific NLP tasks.

PythonPyTorchLoRAQLoRATransformers+2
2024View Details
Backend

Puzzle Mapper

Graph-based puzzle solving engine with Neo4j and advanced pathfinding algorithms.

Neo4jPythonCypherGraph TheoryAlgorithms
2024View Details
Systems

Queue Simulation

Discrete-event simulation of queuing systems with statistical analysis and visualization.

C++SimulationStatisticsAlgorithmsQt
2023View Details
BackendFeatured

TechSupport Pro

AI-augmented helpdesk backend with intelligent ticket routing and auto-resolution.

Node.jsPostgreSQLRedisLLMsREST API+1
2024View Details
Systems

WebSocket Chat C++

High-performance WebSocket chat server implemented from scratch in C++ using POSIX sockets.

C++WebSocketPOSIXepollNetworking+1
2023View Details
Compilers

YALex / YAPar

Lexer and parser generator tools — YACC/Lex inspired, written in Python.

PythonDFA/NFASLR(1)LALR(1)Formal Languages+1
2023View Details

Education

My academic background

B.S. in Computer Science & IT Engineering

Universidad del Valle de Guatemala

2022 – 2026
Guatemala City, Guatemala

Comprehensive computer science program with strong foundations in algorithms, operating systems, compilers, databases, networking, artificial intelligence, and software engineering.

  • Advanced coursework in Compilers, Operating Systems, Parallel & Distributed Computing, and Deep Learning
  • Built a complete compiler pipeline including lexical analysis, parsing, semantic analysis, and code generation
  • Designed simulation and optimization models applying formal mathematical methods

Let's Connect

I'm always open to discussing new projects, creative ideas, or opportunities.

Send me an email

diegopablo012@gmail.com
or find me on
GitHubLinkedIn