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Alain A.
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Alain A.

Senior .NET Software Engineer

Looking for professionalism, fast delivery times, strict adherence to software development best practices, and deep expertise in today’s top technologies? Then let’s talk. I’m Alain Alvarez, a Senior .NET Engineer with over 20 years of experience delivering scalable, maintainable, and high-performance solutions across startups, agencies, and enterprise environments. I specialize in clean architecture and full-stack development using C#, ASP.NET Core, and the .NET Framework, with hands-on experience in both modernizing legacy systems and building cloud-native platforms from the ground up. I apply Domain-Driven Design (DDD) and Clean Architecture principles to ensure robust, modular, and future-ready code. I’ve also expanded my tech stack to include modern tools such as React, Next.js, Node.js, NestJS, and MongoDB, enabling me to bridge traditional enterprise backends with high-performance, user-friendly frontend and modern micro-services. Key Expertise: • Full-stack development with C#, ASP.NET Core, .NET Framework, Web APIs • UI/UX development with React, Blazor, Next.js • Scalable backend services with Node.js, NestJS • Data modeling with SQL Server and MongoDB • Cloud deployment using Azure Functions, App Services, API Management • Secure identity with OAuth 2.0, OpenID Connect • Automated testing and delivery pipelines with xUnit, GitHub Actions, CI/CD I bring not just technical skills, but a strategic mindset and a commitment to delivering clean, reliable, and high-quality software on time, and aligned with your business goals. Let’s build something solid, smart, and scalable.

🇺🇸Ballston Lake, United States$35/hr100% JSS5.00 (1)Since Mar 2025

Earnings and projects

MRR
$179

Last 6 months ÷ 6

World#117,281 / 412k
🇺🇸Country#16,280 / 62.1k
Revenue, last 30 days
$0

Last 6 months: $1.1k

Total earnings
$6.6k

Billed in all: $6.8k

World#231,893 / 412k
🇺🇸Country#36,675 / 62.1k
Per project
$2.2k

$537 in the last 6 months

World#72,118 / 412k
🇺🇸Country#12,061 / 62.1k
Projects, last 6 months
2
100% fixed0% hourly
World#88,921 / 412k
🇺🇸Country#11,762 / 62.1k
Projects in all
3
67% fixed33% hourly
World#304,142 / 412k
🇺🇸Country#44,018 / 62.1k

Earnings, last 30 days

$6.8kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$6.7k$6.8k$6.9k$7.0kOct 9Oct 24Nov 8

Skill rankings: Top 22% in RESTful API

Ranked by MRR among everyone on Upwork with the skill.

  1. #29Domain-Driven Design105 freelancers · 🇺🇸 #4Top 28%
  2. #244Entity Framework1,047 freelancers · 🇺🇸 #16Top 23%
  3. #517ASP.NET Core2,272 freelancers · 🇺🇸 #43Top 23%
  4. #596AI Mobile App Development1,401 freelancers · 🇺🇸 #35Top 43%
  5. #743.NET Core3,067 freelancers · 🇺🇸 #67Top 24%
  6. #1,250Microsoft Azure4,659 freelancers · 🇺🇸 #180Top 27%
  7. #1,327RESTful API6,064 freelancers · 🇺🇸 #97Top 22%
  8. #1,876C#8,348 freelancers · 🇺🇸 #246Top 22%