10/29/2026 updated
EP
100 % available
Software Architect | .NET & Azure | Healthcare Systems | SaaS Architecture
ZAGREB-TRESNJEVKA, Croatia
Only remote
Computer ScienceEnd-to-End System Design & Software Architecture
Expertise in designing and delivering complete software systems, from API and database architecture to cloud deployment. Proven track record of setting architecture, technology choices and design direction for complex multi-tenant healthcare and SaaS platforms.
.NET & Azure Cloud Development
Deep proficiency in C#, .NET, .NET Core, ASP.NET Core and Entity Framework, combined with hands-on experience in Azure, AWS and Azure DevOps for building and operating high-traffic, cloud-native applications.
Legacy Modernisation & Migration
Extensive experience leading legacy-to-new migrations, including transitioning single-tenant databases to multi-tenant platforms, designing data mapping and migration logic, and maintaining existing functionality throughout the process.
Database Architecture & Administration
Solid experience with SQL Server and PostgreSQL, including code-first and existing database structures using Entity Framework, as well as tenant isolation through row level security (RLS).
DevOps & CI/CD Pipelines
Implementation of Azure continuous integration and deployment pipelines for applications with high traffic and throughput requirements, using Docker, Git and Azure DevOps.
SaaS Product Ownership & Business Delivery
Full ownership of SaaS products from concept and architecture through feature development, delivery and commercial decisions, including direct customer contact and cost management.
REST API Design & Integration
Design and integration of REST APIs across multiple platforms and third-party services, supporting both greenfield development and maintenance of existing .NET Framework and .NET Core applications.
Frontend & Additional Technologies
Additional experience with React, Vite, Next.js, Angular, Node.js, JavaScript, .NET MAUI, Oracle, Toad, Delphi, RabbitMQ, Jira and Postman.
Stakeholder Communication & Technical Decision-Making
Ability to present technical options and progress to stakeholders, clarify requirements, turn product needs into delivery priorities and align engineering with business goals.
Expertise in designing and delivering complete software systems, from API and database architecture to cloud deployment. Proven track record of setting architecture, technology choices and design direction for complex multi-tenant healthcare and SaaS platforms.
.NET & Azure Cloud Development
Deep proficiency in C#, .NET, .NET Core, ASP.NET Core and Entity Framework, combined with hands-on experience in Azure, AWS and Azure DevOps for building and operating high-traffic, cloud-native applications.
Legacy Modernisation & Migration
Extensive experience leading legacy-to-new migrations, including transitioning single-tenant databases to multi-tenant platforms, designing data mapping and migration logic, and maintaining existing functionality throughout the process.
Database Architecture & Administration
Solid experience with SQL Server and PostgreSQL, including code-first and existing database structures using Entity Framework, as well as tenant isolation through row level security (RLS).
DevOps & CI/CD Pipelines
Implementation of Azure continuous integration and deployment pipelines for applications with high traffic and throughput requirements, using Docker, Git and Azure DevOps.
SaaS Product Ownership & Business Delivery
Full ownership of SaaS products from concept and architecture through feature development, delivery and commercial decisions, including direct customer contact and cost management.
REST API Design & Integration
Design and integration of REST APIs across multiple platforms and third-party services, supporting both greenfield development and maintenance of existing .NET Framework and .NET Core applications.
Frontend & Additional Technologies
Additional experience with React, Vite, Next.js, Angular, Node.js, JavaScript, .NET MAUI, Oracle, Toad, Delphi, RabbitMQ, Jira and Postman.
Stakeholder Communication & Technical Decision-Making
Ability to present technical options and progress to stakeholders, clarify requirements, turn product needs into delivery priorities and align engineering with business goals.
Experience
Professional experience5 - 10 years
Freelancer since2025
Languages
EnglishFluentCroatianFluent
Project history
Healthcare engagements with Interactivated Solutions (Netherlands), ZeroHassle (Estonia) and Livtech (United States). Solely managing a live legacy healthcare product end to end, shaping and delivering the replacement multi-tenant platform, leading legacy-to-new migration, reducing AWS cloud costs by 30%, and connecting engineering with business stakeholders. Also designed and delivered a bespoke invoice management system for a local client.
Built and run an independent SaaS business offering ERP software for craft manufacturing with over a dozen clients. Owned the product and business from concept through delivery. Designed a modular multi-tenant platform using ASP.NET Core, React and PostgreSQL with row level security. Translated operational workflows into software and balanced new capabilities with maintainability and hosting costs.
Implemented Azure CI/CD pipelines for high-traffic applications. Designed and integrated REST APIs, developed and maintained .NET Framework and .NET Core applications. Designed and administered SQL Server databases with Entity Framework using code-first and existing database structures.