Hello, I'm 👋
J o s u e C h u r a
I modernize legacy systems, make SQL Server fast, and apply AI in production, with zero downtime.
About Me
My Introduction
I'm Josue Chura, a senior .NET full-stack engineer with 7+ years of experience. I modernize legacy systems to modern .NET with zero downtime, tune SQL Server, and apply AI in production with strict verification. Working remotely for US clients since 2023, and teaching Systems Engineering at university. Off the keyboard: music, books, and exploring new tech.
Tech Stack
Technologies I work with
Experience
What I offer & what I've built
.NET Full-Stack Development
End-to-end web applications with .NET 8, Angular and Azure
- I build backend services and REST APIs with .NET 8 and EF Core.
- I develop frontends with Angular and TypeScript.
- I integrate payments, webhooks, queues and third-party CRMs.
- I apply AI in production with strict verification (RAG, assisted development).
.NET Full-Stack Development
End-to-end web applications with .NET 8, Angular and Azure
- I build backend services and REST APIs with .NET 8 and EF Core.
- I develop frontends with Angular and TypeScript.
- I integrate payments, webhooks, queues and third-party CRMs.
- I apply AI in production with strict verification (RAG, assisted development).
Legacy System Modernization
Migrations without service interruption
- I migrate .NET Framework systems to modern .NET.
- I move databases between engines (SQL Server to PostgreSQL).
- I replace ORMs and upgrade frontends (NHibernate to EF Core, Angular 9 to 19).
- I plan cutovers with replicas, night scripts and rollback criteria.
Legacy System Modernization
Migrations without service interruption
- I migrate .NET Framework systems to modern .NET.
- I move databases between engines (SQL Server to PostgreSQL).
- I replace ORMs and upgrade frontends (NHibernate to EF Core, Angular 9 to 19).
- I plan cutovers with replicas, night scripts and rollback criteria.
Databases & Performance
Design, tuning and diagnostics on SQL Server, Oracle and PostgreSQL
- I design schemas, indexes and stored procedures.
- I diagnose slow queries with Query Store and execution plans.
- I fix N+1s, locking issues and connection pool exhaustion.
- I set up observability: baselines, alerts on symptoms, reports.
Databases & Performance
Design, tuning and diagnostics on SQL Server, Oracle and PostgreSQL
- I design schemas, indexes and stored procedures.
- I diagnose slow queries with Query Store and execution plans.
- I fix N+1s, locking issues and connection pool exhaustion.
- I set up observability: baselines, alerts on symptoms, reports.
Projects
Most recent work
Zero-Downtime Modernization
Three chained migrations on live production systems for US clients: .NET Framework 4.8 to modern .NET, SQL Server to PostgreSQL with NHibernate to EF Core, and Angular 9 to 19. Zero downtime: night scripts, replicas, and test-backed verification.
AI-Assisted Development Pipeline
Designed, built, and operate a development pipeline with autonomous coding agents under strict guardrails, TDD, and automated verification: 1.8x more weekly deliveries, measured with reproducible queries over merged pull requests. Every AI-generated line is reviewed.
AI-Powered University Learning Platform
End-to-end features for an international university education platform: an AI course recommender (RAG pipeline with GPT, embeddings, and vector search on Azure AI Search), online payments, Zoom live classes via webhooks and queues, and Salesforce sync.
Tax-Forms & Nad-Forms (IRS)
Led the reporting and database module of Tax-Forms (automated generation of official IRS forms, RDLC, optimized SQL Server) and directed Nad-Forms, a drag-and-drop form designer that replaced paid third-party services across a suite of 52+ solutions.
APP-Saludable (PWA)
Preventive-health PWA used by Cochabamba police personnel: habits, sleep, diet, and health status. Lead developer and trainer.
Testimonials
What clients say about my work
“I had a great experience working with Josue. He developed an internal inventory system with integrated payments that fit our business perfectly. Everything was smooth, detailed, and well-supported throughout.”
Sara Rojas
Client
“Working with Josue was a pleasure. He delivered a wellness app tailored to natural health practices, with thoughtful features and precise execution. The results speak for themselves.”
Cochabamba Mayor's Office
Client
“Josue did an outstanding job developing both our website and a custom system for managing client payments. His work was detailed, reliable, and helped streamline our monthly Wi-Fi billing with dynamic QR integration.”
Goo Net Technology
Client
“Josue built a versatile sports management system for our league, helping us coordinate matches, tournaments, and rankings across football, volleyball, and futsal. His work was efficient, intuitive, and made organization much easier.”
Liprodes
Client
Certifications
My professional credentials
CCNA 1
Cisco
CCNA 2
Cisco
CCNA 3
Cisco
CCNA 4
Cisco
Cybersecurity Cisco
Cisco
Cybersecurity
Cisco
AGETIC Security Congress
Agetic
Capture The Flag - AGETIC
Agetic
Recommendation Letter 1
Professional
Recommendation Letter 2
Professional
Recommendation Letter 3
ProfessionalContact Me
Get in touch
Let's work together
I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision. Feel free to reach out through any of the channels below.