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Juan Carlos Arrieta Rincón

Senior .NET Engineer & Software Architect

I'm a Senior Software Engineer and Software Architect with 15+ years of experience designing, modernizing and optimizing enterprise software.

My core expertise includes the .NET ecosystem, Microsoft Azure, REST APIs, SQL Server, cloud modernization, application performance, DevOps and cross-platform mobile development.

I combine hands-on engineering with architecture, security, testing, CI/CD and technical leadership to deliver reliable, scalable and maintainable software solutions.


Professional Profile

Specialization: .NET · Azure · Software Architecture · Cloud Modernization
Location: Maracaibo, Venezuela
Availability: Remote-first · Available for professional engagements
Juan Carlos Arrieta - Senior .NET Engineer and Software Architect

Expertise

Senior-level expertise across the .NET ecosystem and Microsoft Azure, with a strong focus on backend architecture, APIs, SQL Server performance, cloud modernization, DevOps, security and mobile development.
.NET / ASP.NET Core
95
SQL Server & Performance
90
.NET MAUI / Xamarin
80
Azure / Azure DevOps
88
Docker / Git / CI/CD
82
Testing / Security / Quality
72

Experience

2025–Present

Code Auditor & .NET Developer — Outlier

Conduct C# and .NET code audits focused on security, performance, correctness, maintainability and enterprise engineering standards. Process 100+ code reviews monthly, develop reference-level solutions and testing strategies, and maintain a 92% approval rate in quality audits.

2020–2022

Xamarin Developer / Senior Mobile Developer — Logista

Designed and implemented REST APIs consolidating data from 8+ heterogeneous sources using C# and .NET Core. Implemented Clean Architecture, Repository Pattern, Dependency Injection and event-driven integrations. Reduced API latency by 45% and mobile application crash rate from 8% to 0.3%.

2016–2019

Xamarin Developer / Senior Developer — Telus Digital

Led the migration from a .NET MVC monolith to a .NET Core microservices architecture, migrating 150,000+ lines of legacy code with zero downtime. Optimized SQL Server workloads and reduced average query response time by 68%, from 2.5 seconds to 800 milliseconds. Generated $500K+ in reported annual infrastructure savings.

2010–2015

Backend Developer / Senior Software Engineer — KayienSoft

Designed and delivered 12+ enterprise desktop, web and mobile solutions. Established coding, security and deployment standards, implemented continuous integration for 8+ projects and reduced deployment time by 87%. Built and led a technical team of 8+ developers.

Key Achievements

68% Faster Queries

Reduced SQL Server query response time from 2.5s to 800ms.

5K+ Concurrent Users

Designed and optimized REST APIs for high-concurrency environments.

15+ Migrations

Led .NET Framework to .NET Core modernization with 20–30% performance gains.

Education

2010–2015

Systems Engineer

Universidad Nacional Experimental Politécnica de las Fuerzas Armadas (UNEFA), Venezuela

2005–2009

Technical Superior in IT

Instituto Universitario Tecnológico de Maracaibo (IUTM), Venezuela

Certifications & Recognition: IBM Master the Mainframe 2020 — Level 2 & Level 3 (Top 15 of 500+ global participants) · Windows Server 2019 Essential Training · Merit Recognition Diploma for Educational Excellence.


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