Nelson L.
Software Engineer | Chinese Research & Technical Support
I help clients solve SQL and application problems, migrate data, and build reliable software. I'm a software engineer with 15+ years of experience, based in China and working with international teams. What I can help with: - SQL Server, Oracle and MySQL: complex queries, stored procedures, optimization, data reconciliation and migration. - C#/.NET and Node.js: backend development, APIs, debugging and technical support. - Chinese-language research and product review, with clear English summaries. My work includes refactoring hundreds of SQL stored procedures for State Street reporting systems and building configurable C# migration tools that handled over 100 million records. I'm a native Mandarin speaker and communicate in English, with written confirmation of complex requirements. Based in UTC+8, I'm available for remote projects and ongoing support.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $99
Billed in all: $1,013$1k
$99 in the last 6 months
Earnings, last 30 days
Tracked from Oct 11, 2026.
Skill rankings: Top 25% in ASP.NET MVC
Ranked by MRR among everyone on Upwork with the skill.
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