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Available for Work

Hello, I'm

Nathan Yin

_

Passionate software developer with 4+ years of experience in .NET and full-stack development. Expertise in C#, Python, JavaScript, SQL, and cloud technologies. Familiar with LLM integration, RAG pipelines, and AI-assisted development. Currently building enterprise-scale wealth management platforms as an Analyst Developer at FNZ in Auckland.

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<about>

About Me

0+ Years Exp
0+ Projects
0 Award

I'm a Passionate Software Developer

With a career spanning both China and New Zealand's tech sectors, I've evolved from a full-stack developer to an analyst developer at a leading fintech company. My journey includes building enterprise-scale wealth management platforms, online shopping systems, CRM/ERP systems, and educational tools.

My expertise lies in .NET backend development, database performance optimisation, and production issue investigation across complex platform components. I leverage modern tools including AI-assisted development (GitHub Copilot, Claude), and explore LLM integration and RAG approaches alongside Agile, CI/CD, and Domain-Driven Design practices to deliver reliable solutions.

Name Nathan (Zeqi) Yin
Email zeqiyin@aol.com
Location Auckland, New Zealand
Focus .NET / SQL Server / Full Stack
Contact Me
<skills>

My Skills

Backend

C# / .NET Framework / .NET Core 90%
Python 75%
REST APIs / Entity Framework 85%

Frontend

JavaScript / jQuery 88%
React / Vue.js 85%
HTML5 / CSS3 / Bootstrap 90%

Database & DevOps

SQL Server / MySQL / MongoDB 85%
GitHub / Azure DevOps / Docker 80%
TeamCity / CI/CD Pipelines 78%

Infrastructure & AI

Linux / Windows Server / Nginx 78%
AI Dev (Copilot / LLM / RAG) 72%
Agile / DDD / TDD / SOLID 80%
<experience>

My Experience

Apr 2024 - Present Current

Analyst Developer

FNZ, Auckland, NZ

  • Develop and maintain enterprise-scale investment and wealth management platform services supporting pension and financial products for global financial institutions.
  • Analyse and optimise complex SQL Server stored procedures, execution plans, and indexing strategies to improve performance of large financial data processing workflows.
  • Investigate complex production issues across platform components, identifying root causes in database logic, batch processing jobs, and application services.
  • Contribute to .NET-based backend services and database-driven workflows supporting core investment platform operations.
  • Participate in CI/CD pipelines using TeamCity, supporting automated builds, deployments, and environment stability.
  • Apply AI-assisted development tools (GitHub Copilot, Claude) and prompt engineering to support code generation, debugging, and documentation, improving development productivity in day-to-day workflows.
  • Explore integration of LLM APIs and Retrieval-Augmented Generation (RAG) approaches to assist with internal knowledge retrieval and documentation search within the development team.
Dec 2022 - Feb 2024

Software Engineer

Wuhan YINGJIA Technology Co., Ltd., China (Hybrid)

  • Deep involvement in the design and launch of multiple online shopping systems, closely aligning with strategic business objectives.
  • Enhanced functionality and user experience for CRM and ERP system modules, resulting in a 30% boost in performance and 25% increase in user satisfaction.
  • Employed advanced object-oriented programming techniques and three-tier architecture, enhancing operational efficiency through improved software design.
  • Pioneered improvements in UI/UX design through expert application of HTML, CSS, JavaScript, Ajax, and XML, achieving a 20% enhancement in user interface design.
Sep 2021 - Nov 2022

Academic Tutor

Southern Institute of Technology, Invercargill, NZ

  • Developed accessible lectures and interactive course materials on complex technical topics, aligning with current industry practices.
  • Equipped students with practical skills in C# .NET and software management tools like Git, mentoring them towards successful entry-level developer roles.
  • Contributed to academic journals on IT development and problem-solving, showcasing dedication to education and continuous learning.
Aug 2020 - Aug 2021

Full Stack Developer

Guangzhou Yun Xiang Store Co., Ltd., China (Remote)

  • Engaged in the full Software Development Life Cycle, designing and implementing front-end components and integrating them with back-end systems using RESTful APIs and JSON.
  • Demonstrated proficiency in both front-end and server-side coding, specialising in database optimisation and application security.
  • Managed software configurations effectively using Git, emphasising continuous learning of new technologies to improve system performance.
<portfolio>

My Portfolio

Enterprise

YunXiang Store Management

Comprehensive store management with inventory control, sales tracking, and payments.

ASP.NET CoreWebAPIRedisJWT
Demo: yunshop / yunshop
View Project
Enterprise

YunXiang Warehouse Management

Enterprise-level warehouse management with real-time inventory and reporting.

.NET MVCSqlSugarBootstrapAdminLTE
Demo: admin / 123456
View Project
Web App

YunXiang CMS

Content management system with rich text editing, media, and analytics.

.NET 6.0DapperLayuiEcharts
Demo: admin / 123456
View Project
Education

Student Online Exam System

Online exam platform with automated grading and performance analytics.

ASP.NETEntity FrameworkjQuery
Demo: admin or student_1 / 123456
View Project
Education

Academic Performance System

Academic management with grade tracking and performance reports.

ASP.NET.NET FrameworkBootstrap
Demo: admin or 20221011 / 123456
View Project
<contact>

Contact Me

Get In Touch

If you have questions, feel free to enquire using the contact form or reach out directly through the following contact details.

Email

zeqiyin@aol.com

Location

Auckland CBD, Auckland 1010