01 · Tech Lead · Bogotá
I build
agents that take
AI to real product.
7+ years leading full-stack for government and private companies. Today I put RAG agents, MCP and Spec-Driven Development to work in projects that run in production.
ONLINE
</> RAG · MCP
AI · TECH LEAD
{ai}
diego@portfolio — zsh
~/portfolio ➜
RAG◆LANGCHAIN◆MCP◆AGENT SKILLS◆SPEC-DRIVEN DEV◆WEAVIATE◆.NET CORE◆SPRING BOOT◆ANGULAR◆REACT◆TYPESCRIPT◆OPEN SOURCE◆MICROSERVICIOS◆ORACLE◆POSTGRESQL◆RAG◆LANGCHAIN◆MCP◆AGENT SKILLS◆SPEC-DRIVEN DEV◆WEAVIATE◆.NET CORE◆SPRING BOOT◆ANGULAR◆REACT◆TYPESCRIPT◆OPEN SOURCE◆MICROSERVICIOS◆ORACLE◆POSTGRESQL◆
02 · About me
I ship systems to production
for government and private companies.
I'm Diego Cabrera. For 7+ years I've built procedure portals, enterprise platforms and mission-critical systems for Colombian government agencies, city governments and private-sector organizations — from insurers like Positiva to startups and freelance clients. My day splits between defining architecture, writing code and leading teams that deliver without losing technical depth.
Information
LocationBogotá, Colombia
Emaildiegoandresrojas2000@gmail.com
Phone+57 320 418 0598
LanguagesES native · EN B1
Status● available
Modalityremote / hybrid
7+
years of experience
20+
projects in production
27
procedures implemented
3
AI solutions in production
02.1 · Experience
A decade writing software
that matters.
Tech Lead — Development & AI Strategy
Aug 2024 – Present
SASOFTCO · Bogotá, Colombia
- Lead the Positiva ISARL project, the organization's core system: I drive the response to reported technical incidents and plan the migration strategy to decouple the monolith into microservices using Java (Spring) and .NET Core.
- Led the Positiva CMDB team: defined the architecture and data model of a portal that orchestrates via n8n infrastructure incidents — applications, servers and systems — reported in SolarWinds into Aranda, where tickets are created automatically, eliminating manual operator reporting and speeding up resolution times.
- Led the design and build of an assistant for Positiva that answers questions about organizational documentation in natural language (Python, LangChain, Weaviate), letting business users find answers in seconds instead of searching manually across hundreds of technical pages.
- Implement optimizations in the development process by applying AI tools and methodologies such as Spec-Driven Development, backed by project knowledge bases, to speed up delivery times and unify the team's standards.
- Implemented automated code review on every pull request, consistently validating company standards and freeing up review time for senior developers.
- Directed the migration of the Jackcore monolith to a reusable microservices architecture in .NET Core (authentication, BPMN, notifications, document conversion, storage), reducing the cost and time of new development by allowing reuse across multiple systems.
- Provide cross-functional technical support to portfolio projects (MinTIC, Alcaldía de Chiquinquirá, other agencies), reducing maintenance time and production incidents.
Full Stack Developer
Mar 2023 – Aug 2024
SASOFTCO · Villavicencio, Colombia
- Designed and built Generator Forms's dynamic form generator (Angular + Camunda Forms Modeler), cutting complex form creation from days to minutes; now a core component across multiple government portals and procedures.
- Delivered Cormacarena's procedures portal (Angular and .NET Core) aligned with Colombian government guidelines, digitizing environmental procedures and reducing citizen response times.
- Built an enterprise procedures portal in Angular and .NET Core for MinTIC and municipal governments such as Chiquinquirá and Zipaquirá, automating procedure management, authentication, and reporting, increasing client agencies' operational efficiency.
- Implemented a centralized Citizen Services Platform aligned with government accessibility standards, improving the user experience of online procedures.
Full Stack Developer — Freelance
Jan 2022 – Present
Freelance projects · Colombia (Remote)
- Implemented AlbertCTS's landing page with Cursor, GitHub Copilot, and AI practices, cutting delivery time by 70%.
- Redesigned the React frontend architecture of Trip Planner IA, an AI travel-planning startup later acquired by tripplanner.ai, improving scalability and production performance.
- Developed a React Native mobile MVP for a B2B materials marketplace, with per-client transaction traceability.
Backend Developer
May 2021 – Nov 2021
HEWTEC · Bogotá, Colombia
- Optimized the Wizard tool for automated full-stack template generation (React, Node.js, Express, PostgreSQL) under a REST architecture, accelerating the bootstrap of new internal projects.
- Trained multiple internal teams on installation, components, and effective reuse of the tool.
Frontend Developer
Jun 2018 – Sep 2019
S&C Business Solutions · Villavicencio, Colombia
- Implemented the CMS for Unicentro Villavicencio shopping mall (JavaScript, Firebase, Firestore Realtime), reducing the time to update store information.
- Built responsive web applications with React.js, Firebase, and Vanilla JS for multiple local businesses, optimizing their digital presence.
02.2 · Stack
Tools I use every day.
AI & Agents
RAGLangChainWeaviateMCPAgent SkillsSpec-Driven DevPrompt Eng.Human-in-the-loop
AI-powered Editors
CursorClaude CodeGitHub CopilotOpenCodeCodex
Frontend
Angular 14+ReactReact NativeTypeScriptNext.jsGatsbyWeb Components
Backend
.NET CoreJava Spring BootNode.jsExpressGraphQLREST
Architecture
MicroserviciosClean CodeSOLIDBPMNAuthN/AuthZ
Data
SQL ServerPostgreSQLOracleMongoDBNeo4jFirestore
03 · Projects
Main projects.
What I've designed, built and worked on closely: live in production or on the way.
★ FEATUREDIN PROGRESSJoobia — CV optimization with agents
A multi-agent flow that tunes your CV against a real job offer.
★ FEATUREDAI Assistant — Knowledge Base
From searching by hand to asking: the document shows up with its citation.
★ FEATUREDForm & Process Builder
A form that took 8–16 hours now takes minutes.
showing 13 / 13
01
Joobia — CV optimization with agents
A multi-agent flow that tunes your CV against a real job offer.
→
02
AI Assistant — Knowledge Base
From searching by hand to asking: the document shows up with its citation.
→
03
Form & Process Builder
A form that took 8–16 hours now takes minutes.
→
04
Form Visualizer
A whole form that draws itself from its configuration.
→
05
AI Assistant — Procedures on WhatsApp
The procedure status gets asked, not searched on the portal.
→
06
Citizen Procedures Portals
From waiting 10–15 days in person to resolving in hours.
→
07
Positiva CMDB — Incident Orchestration
SolarWinds → Aranda with no one retyping incidents by hand.
→
08
Spec-Driven Development — AI Strategy
The team works from specs and picks the model — no vendor lock-in.
→
09
AI-powered PR Review
Every PR runs against company rules before human review.
→
10
Monolith → Microservices Migration
Jackcore turned into reusable capabilities.
→
13
B2B Materials MVP
Mobile app with per-client transactional traceability.
→
05 · Blog
Field notes on applied AI.
What I learn building agents, platforms and processes. No inflated theory — just what already worked (or failed).
Coming soon
The first posts are on the way.
I'm putting together field notes on applied AI, architecture and the projects I build: what worked, what failed, and the technical reasoning behind every decision. No hype and no inflated theory — so you can apply it the same day you read it.
In the meantime, take a look at the projects 04 · Live demo
The idea I take to production,
right here.
/ ask diego — rag agent
Ask me what I really do.
This box is a mini-RAG over my CV, experience and real projects. It's the same idea I ship to production for my clients.
knowledge base: profile · track record · stack · projects
06 · Contact
Shall we build
something together?
Available for software projects in applied AI, scalable architecture and consulting for teams that want to integrate agents into their flow.