20+
Years in software
From long-lived enterprise platforms to modern cloud services.
Anh Bui
Senior / Lead Software Engineer ยท .NET, Azure, Financial Systems & SaaS Products
I build and maintain business-critical software across enterprise financial systems, Azure cloud services, integrations, and SaaS products. My work spans architecture, implementation, production support, legacy modernisation, and technical leadership.
I am strongest in large, long-lived codebases where correctness, auditability, and reliability matter: tracing problems through code, SQL, configuration, integrations, and version history until the real cause is clear.
C# / .NET Azure Fintech & payments SQL Server SaaS products
8
Years leading teams
Development lead, technical lead, Scrum Master, and project management.
8
Live SaaS products
Browser software actively available to real users.
RCA
Root-cause mindset
Tracing failures through code, config, data, version history, and live behaviour.
AI
Agentic workflow
Claude Code, MCP, custom skills, hooks, memory, and automation.
About
Broad senior experience, sharpened by deep debugging.
My career has covered hands-on engineering, senior delivery, team leadership, enterprise .NET platforms, financial systems, cloud services, partner integrations, and independent SaaS product work. The common thread is practical ownership: understand the system, make the right change, and keep it supportable.
- Senior .NET delivery: more than two decades building, maintaining, and improving production business systems.
- Broad domain range: financial services, automotive dealer management, healthcare, e-payment, housing, communications, insurance, and manufacturing.
- Root cause over quick fix: I follow evidence to the actual source instead of patching what is visible.
- Modernisation with stability: I bridge legacy VB6 and long-lived .NET systems with modern services while keeping production dependable.
- Agentic AI development: I use Claude Code and MCP daily on real production code for navigation, debugging, refactoring, QA, and team workflow automation.
- Product ownership: I design, build, operate, license, release, and support my own SaaS products for real users.
What I work with
Backend, cloud, data, products, and the tooling around them.
I am comfortable moving between architecture and the details: APIs, payment and identity flows, SQL behaviour, secure configuration, browser products, and automation that helps teams move faster.
Backend & APIs
C#, .NET Framework / .NET, ASP.NET Core, Web API, WCF/SOAP services, WinForms, Entity Framework, and dependency injection.
Financial systems & data
Lending and collections platforms, fintech and payment flows, SQL Server, T-SQL, audit trails, schema analysis, and query debugging.
Cloud & config
Azure App Services, Functions, Queue Storage, Azure SQL, Key Vault, Application Insights, Azure App Config, OAuth, and environment management.
Security, workflow & products
Application-layer encryption, credential handling, Git, Azure DevOps, PowerShell, Chrome and Edge extensions, Claude Code, and MCP.
AI-assisted development
Claude Code, MCP server setup, custom skills and commands, hooks, context and memory engineering, prompt design, QA, and PowerShell automation.
Working with AI
AI tooling is part of how I engineer, not a novelty.
I use agentic coding assistants on a large production codebase for the work that actually takes time: navigating unfamiliar modules, reproducing failures, tracing root causes through code, configuration, SQL, and Git history, and shaping QA.
MCP servers
I set up and configure Model Context Protocol servers, then diagnose tool behaviour, scope-gated results, and resolution paths so a team can rely on them.
Skills, commands & hooks
I author reusable skills and slash-commands, wire up session hooks and custom modes, and use PowerShell automation to distribute shared AI tooling.
Context & memory engineering
I design persistent, structured memory so findings carry between sessions and the assistant compounds knowledge instead of restarting.
What I bring
A mix of senior engineering judgement, production support discipline, root-cause investigation, cloud and integration experience, AI-assisted workflow, product ownership, and steady improvement of systems people rely on.
Fintech & payments
Hosted checkout, tokenisation, callbacks, reconciliation, auditability, and third-party provider integrations.
Azure cloud
Cloud services designed for visibility, reliability, security, and day-to-day operation.
Legacy modernisation
Incremental improvement of long-lived systems without losing operational stability.
Root-cause debugging
Code paths, SQL, configuration, logs, version history, and live behaviour traced together.
Product engineering
End-to-end SaaS ownership across UX, licensing, release management, privacy, and support.
Technical leadership
Code review, mentoring, pragmatic architecture, engineering management, and delivery ownership.
Agentic AI workflow
Daily AI-assisted work on production code, with human review, testing, and real-system verification kept central.
Trusted by people I have worked with.
Recommendations from managers and colleagues highlight dependable delivery, adaptability, Microsoft-stack depth, communication, and a genuine interest in finding better solutions.
Let's talk.
Get in touch to discuss software engineering, fintech and payment platforms, Azure cloud systems, legacy modernisation, integrations, SaaS products, or developer tooling.