Daniel Dimitrov

Flagship engagement. Built DebtSense (now Aryza) from the ground up for an Irish company (VisionBlue, later acquired by Aryza) — multi-tenant SaaS insolvency and debt management platform, now in production with multiple UK insolvency firms as tenants. Full microservices architecture on .NET and Azure, event-driven where eventual consistency was acceptable, synchronous APIs on the critical path, Azure SQL with EF Core. Seven years of continuous work — architecture, delivery, performance, stabilisation.

Development and maintanence of the university's web site (Developing various software solutions for the needs of the university, such as:

• - web-based application for the central registry;

• - web-based application for managing assets in the IT department;

• - web-based academic information system for teachers and students;

SquidERP — modular ERP platform for SMB operations. I rebuilt the authentication system end-to-end to support multi-tenancy and multiple identity providers (Google, Microsoft, phone-only login), and built a centralised authentication service that handles auth uniformly across the company's suite of apps. I also delivered centralised user management across instances — so administrators manage users, roles, and access in one place rather than per-app — and built the billing portal handling subscriptions, plans, and customer self-service. .NET 8 backend with Angular frontend. The work covered token issuance and refresh, identity provider integration, tenant-aware permission resolution, and the migration path from the legacy auth layer to the new service without disrupting existing users.