Douglas HutchfulOpen to opportunities
I'm Douglas Hutchful, a backend-focused Full-Stack .NET Developer. I build secure, scalable APIs and business systems that turn complex requirements into reliable software.
const douglas = {
focus: "backend systems",
stack: [".NET", "C#"],
principles: [
"clear architecture",
"secure by default",
"ship with purpose"
]
}
Available for backend and full-stack roles.
01 / About
Experienced .NET developer specializing in building enterprise-grade systems using ASP.NET Core, C#, and SQL Server.
I design and develop secure, scalable REST APIs and microservices for complex business applications. My focus is clean architecture, database optimization, and production-ready solutions — with a strong instinct for translating business needs into dependable technical implementations.
View full résumé02 / Selected personal work
Systems designed with clarity, security, and the next version in mind.
A real-time monitoring and alerting backend for operational health, system metrics, and performance degradation.
Clean Architecture ASP.NET Core backend with SignalR streaming, background workers for metrics, alerts, health checks, retention, dashboard aggregation, and API health monitoring.
Secure, tenant-aware API infrastructure for shared SaaS environments.
Tenant-aware middleware, dynamic database connection handling with Entity Framework Core, and JWT authentication for isolated access per customer.
Secure backend for managing inventory, sales, and credit operations in a multi-user SaaS environment.
Built with ASP.NET Core and Clean Architecture to support inventory management, sales tracking, and creditor workflows with JWT authentication, refresh-token security, and user-scoped access boundaries. The system is designed for isolated customer workflows and scalable business operations.
Secure, clean-architecture APIs for payments and wallets with JWT authentication and ledgered transactions.
ASP.NET Core APIs with JWT auth, EF Core models (Postgres/Npgsql), background monitors, health checks, audit logging, idempotent transaction handling, and middleware for request logging and exception handling.
A practical operations system for stock, customers, orders, and professional reporting.
Built with ASP.NET Core MVC, EF Core, and SQL Server with stock tracking, customer management, order processing, and PDF report generation.
A full-stack commerce experience covering catalog, cart, checkout, and account workflows.
Product management, shopping cart functionality, secure payment processing, user authentication, and order management from the ground up.
03 / Toolkit
04 / Experience
A timeline of building, shipping, and learning across product teams and client work.
Developed and maintained enterprise business systems using ASP.NET Core, C#, and SQL Server, supporting internal and client users across finance and inventory operations within 3 departments.
Built a custom integration between Sage Evolution and Zoho CRM using ASP.NET MVC, C#, and SQL, automating synchronization of about 200-500 customer, account, and contact records daily via third-party SDKs and REST APIs.
Implemented scheduled background processing, error handling, and sync-health monitoring for the integration, cutting manual data entry time from long hours per week to under 30 minutes and eliminating recurring sync inconsistency.
Contributed to an end-to-end payroll and employee management system supporting 100+ employees, with audit logging and compliance-ready reporting.
Skills ASP.NET Core, C#, SQL Server, Razor Views, DataTables, Entity Framework
Took on a remote part-time contract alongside full-time employment at Innorik to deliver ERP solutions using C#, .NET Core, ASP.NET MVC, and Entity Framework, supporting inventory, financial reporting, procurement, and supply chain modules for a company processing more than 700+ orders per month.
Built E-VAT compliance modules integrated with GRA-certified invoicing systems, enabling real-time invoice validation for over 1000 invoices/month and eliminating manual VAT calculation errors.
Developed sourcing/procurement features — vendor management portals, purchase order workflows, and supplier analytics dashboards.
Skills C#, ASP.NET Core, Entity Framework, SQL Server
Developed and maintained multiple RESTful API endpoints across numerous modules/features consumed by front-end applications and collaborating with front-end devs, UI/UX, QA, and product teams in an agile workflow.
Designed scalable backend architecture with JWT-based authentication; optimized database queries and caching, reducing average API response time from 800ms to 200ms.
Documented REST APIs using Swagger/OpenAPI, supporting third-party integrations with reliable versioning and zero breaking changes.
Skills C#, Web APIs, Entity Framework Core, SQL Server
Designed and maintained custom web applications for 12 freelance clients, managing end-to-end delivery from requirements gathering to launch. Implemented SEO improvements and an interactive landing page for a client, increasing organic traffic and conversions. Delivered projects on time by working directly with clients to scope requirements and manage expectations throughout development.
Skills PHP, HTML/CSS, E-Commerce, Web Development
05 / Education
University of Ghana · Completed
St. Augustine's College · Completed
Certification
06 / Contact
Whether you're hiring for a backend role or have a product challenge to solve, I'd like to hear from you.
Ghana