Hi, I'm

Diego Vargas

Backend Developer

Backend-first. I build the systems that hold products together.

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About Me

I'm a Systems Engineering student and backend developer based in Tarija, Bolivia. I've been building software since 2024 — specializing in .NET backends and PostgreSQL schemas, with solid experience in React and React Native frontends.

My approach is simple: sit with the client, understand what they really need, design the right solution, and build it. I specialize in backend systems — architecture, databases, business logic — but I ship the full product when needed.

Most recently, I took LION from an initial client meeting to a live production system used daily by a design agency.

2+Years of Experience
3Major Projects
6Tech Stacks

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Projects

A selection of work I'm proud of.

LION — Business Management System

LION — Business Management System

Lead Developer — end to end, from client meeting to production

Reduced a 1-hour manual billing process to 15 minutes for a real design agency — 75% operational improvement. Full business pipeline: quotations, jobs, clients, and payments. From first client meeting to production.

React 19TypeScriptSupabasePostgreSQL
InnHub — Accommodation Management System

InnHub — Accommodation Management System

Full-Stack Developer — architecture, design & implementation

Configurable accommodation management system for hotels, hostels, and inns — 12 modules, 14 domain entities, 5 access roles.

ReactTypeScriptTailwind CSSPostgreSQLInsForgeVitest
Digital Labor Gap — BI Strategy

Digital Labor Gap — BI Strategy

Dashboard Lead — pipeline integration, data warehouse & deployment (team of 5)

End-to-end BI pipeline measuring the digital skills gap in Bolivian IT education — ELT medallion architecture, Snowflake schema data warehouse, AI assistant via Groq, and 9 KPIs across 4 dashboards.

PythonSQL ServerStreamlitGroq API

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Skills

Technologies I work with.

Backend

C#ASP.NET CorePHPLaravelPythonTypeScript

Architecture

Clean ArchitectureRepository PatternUnit of WorkREST APISOLID

Databases

PostgreSQLSQL ServerMySQLMongoDBSupabaseInsForge

DevOps & Tools

GitDockerDocker ComposeLinuxStreamlitVercelScrum

Frontend

React 19TypeScriptTailwind CSSAstroViteVitest

Mobile

React NativeExpoNativeWindZustand

AI Tools

Pi AgentOpenCodeCodex

Soft Skills

Client CommunicationProblem SolvingTeam CollaborationAdaptabilityTechnical Leadership

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Get in Touch

Open for Projects

Open to remote opportunities. Let's talk.