Hi, I'm

Diego Valenzuela

Applied AI & Full-Stack Engineer

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Designing and deploying production-grade full-stack architectures, MLOps pipelines, and intelligent systems that transform complex operations into high-efficiency software.

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 Fullstack Software Engineer at Nimble, building and extending a core Django/SvelteKit platform to deliver custom web applications across diverse client domains. My work spans REST API design, data modeling, responsive SvelteKit UIs, and third-party integrations — all under agile SCRUM workflows.

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

AI Specialization

Applied AI/ML track within my Computer Science Engineering degree at UVG

🧠

NLP & Language Models

  • Transformer architectures: self-attention, positional encoding, encoder/decoder taxonomy (BERT, GPT)
  • RAG pipelines: chunking, vector retrieval, and re-ranking to mitigate hallucinations
  • Agentic systems: state-graph orchestration (LangGraph/ReAct) for planning and tool use
  • Local inference, quantization & LoRA fine-tuning with Unsloth, Ollama and vLLM
  • Evaluation via LLM-as-a-Judge and Ragas
⚙️

ML Engineering (MLOps)

  • From notebooks to production: modular Python, Sklearn pipelines, source/test/config separation
  • Model serving: FastAPI/Flask APIs, Docker & Docker Compose packaging
  • CI/CD for training and deployment with GitHub Actions and Azure DevOps
  • Testing & validation: pytest, smoke tests, data validation with Great Expectations
  • Production monitoring: drift, performance and resource usage with Evidently, Grafana, Prometheus
👁️

Computer Vision

  • Classical vision: filters, convolutions, feature extraction, RANSAC & homographies for stitching
  • CNN architectures (AlexNet, VGG, ResNet) with transfer learning and data augmentation
  • Real-time detection & segmentation: YOLO, U-Net, object tracking
  • Vision Transformers (ViT) and generative vision models: autoencoders, GANs, diffusion (Stable Diffusion)
🎯

Reinforcement Learning

  • Formal foundations: MDPs, multi-armed bandits, dynamic programming, Q-Learning/SARSA
  • Deep RL: DQN, Double/Dueling DQN, Actor-Critic, SAC, PPO, offline RL
  • Multi-agent RL: CTDE, QMIX for cooperative and competitive environments
  • Emerging directions: Decision Transformers, RLHF and LLM tool-use agents, CleanRL
🛡️

Responsible AI

  • Privacy-by-design: NIST AI RMF, PII handling, on-premise/local RAG to prevent data leakage
  • Explainability: SHAP, LIME, PDP, Anchors — fairness evaluation and bias mitigation (Fairlearn, AIF360)
  • Model documentation (Model Cards), red teaming and prompt-injection prevention
  • FinOps for AI: token/API cost estimation, caching and rate-limiting strategies, latency and carbon footprint

Experience

Where I have applied my skills professionally

Fullstack Software Engineer

Nimble·Full-time
Mar 2026 – PresentPresent
Guatemala (Remote)

Building and extending a core Django/SvelteKit platform to deliver custom web applications for diverse clients, spanning backend architecture, REST APIs, and responsive frontend interfaces.

  • Architect core full-stack platforms using Django REST Framework, SvelteKit, and TypeScript
  • Engineer MLOps pipelines leveraging LLMs, Whisper, document processing, and RAG architectures
  • Build responsive UIs with SvelteKit, TypeScript, and Tailwind CSS following pixel-perfect design specs
  • Integrate third-party services including payment gateways, social auth, and email providers
  • Work under SCRUM with 2-week sprints, participating from planning through production deployment
  • Enforce software quality with automated pytest and Playwright suites, Docker containerization, and CI/CD
DjangoSvelteKitTypeScriptTailwind CSSPythonLLMsRAGWhisperREST APIsDockerpytestPlaywright

Junior Full-Stack Developer

Workly·Full-time
Jul 2024 – Mar 2026
Guatemala (Hybrid)

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

  • Migrated legacy MVP to a production-ready enterprise payroll platform
  • Built RESTful services with NestJS, Node.js, TypeScript, and MongoDB
  • Developed and maintained core features using React, Next.js, and MUI
  • 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

🤖

AI & MLOps Engineering

PyTorchHugging Face TransformersLangChainLangGraphAnthropic / OpenAI APIsSentence TransformersFine-tuning (LoRA / Unsloth)RAG PipelinesPrompt EngineeringVector DatabasesTransformer ArchitecturesOllama / vLLMQuantizationLLM-as-a-Judge / Ragas
🎨

Frontend Architecture

ReactNext.jsSvelteKitTypeScriptTailwind CSSMUIState ManagementREST Integration
⚙️

Backend & Systems

DjangoDjango REST FrameworkNode.jsNestJSExpressCeleryREST APIsWebSocketsMongoDBPostgreSQLAPI Design
💻

Languages

PythonTypeScriptJavaScriptC++CGoSQLBashJavaRust
☁️

Cloud & MLOps Infrastructure

AWS (EC2, S3, RDS, VPC)DockerDocker ComposeGitHub ActionspytestPlaywrightLinuxNginxCI/CD
🔧

Systems & Networking

POSIX SocketsMultithreadingTCP/UDPProtocol DesignMemory ManagementOperating Systems InternalsConcurrency Control

Projects

A selection of what I have built

AIFeatured

The Council

A multi-AI deliberation chamber where Claude, GPT, and Gemini debate your hardest questions out loud.

Next.jsTypeScriptVercel AI SDKAnthropicOpenAI+3
2026View Details
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 & Parser Generator

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

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