# Aleksandar Hajduković

Aleksandar Hajduković is a remote worker on Himalayas, Founder / Backend Contractor at Kvadrati s.p., based in Slovenia.

Source: https://himalayas.app/@aleksandarhajdukovi

```text
.NET backend engineer building enterprise APIs, retail data synchronization, and medical SaaS services.
```

| Detail | Value |
| --- | --- |
| Availability | Open to opportunities |
| Location | Slovenia |
| Authorized to work in | Slovenia |
| Salary expectations | 36k+ EUR |
| Job categories | .Net Backend Engineer |
| Skills | C#, .NET, .NET Core, ASP.NET Core, Backend Development, Microservices Architecture, REST API Design, Enterprise APIs, Distributed Systems, Data Synchronization, Database Design, SQL Query Optimization, Performance Optimization, data consistency, CQRS |

## What I'm looking for

```text
I’m available for shorter 3–6 month contract engagements, with the possibility of extension, but I prefer long-term work.
```

## About

```text
At Kvadrati s.p., I build microservices-based solutions for clients and integrations. I work remotely with international teams as an independent contractor.

For Solve-X, I built enterprise APIs with .NET Core and reorganized the MSSQL stock-management database to support a tenant-ready model. I also optimized SQL queries, stored procedures, and table relations.

At Finiti Solutions, I developed backend services to synchronize product, financial, and document data between shops, central locations, and an ERP system. I also built .NET Core APIs and worked on complex MSSQL data models.

My contract work has also included .NET Core REST APIs and medical-device management services for MESI d.o.o., backend services for document management at Asseco SEE, and data pipelines and reporting services for Interenergo.
```

## Experience

### Founder / Backend Contractor (current)

Kvadrati s.p.. Jan 2014 - Present

```text
Building microservices-based solutions for clients and all sorts of integrations.
```

Skills: Microservices, Integration, Backend-Development

### Senior .NET Core Backend Engineer

Big Bang d.o.o. Jan 2026 - Dec 2026

```text
Built high-reliability enterprise APIs using .NET Core. Reorganized MSSQL database for stock management to be tenant ready and optimized SQL queries, stored procedures, and table relations.
```

Skills: .NET-Core, C#, MSSQL, SQL, Database-Design, API-Development

### Senior .NET Core Backend Engineer

MESI d.o.o.. Jan 2021 - Dec 2026

```text
Designed and implemented .NET Core REST APIs for a medical SaaS platform, built backend services for medical device management and licensing, and supported multi-country scaling. Collaborated with frontend teams on API contracts and maintained service reliability in production.
```

Skills: .NET-Core, C#, REST-APIs, Microservices, Medical-Devices, SaaS

### Senior .NET Core Backend Engineer

Finiti Solutions. Jan 2024 - Dec 2025

```text
Developed backend services for data orchestration and synchronization, integrating with ERP systems and managing document data across shops and central locations. Built high-reliability enterprise APIs using .NET Core and worked on complex MSSQL data models.
```

Skills: .NET-Core, C#, MSSQL, ERP-Integration, Data-Synchronization, API-Development

### Senior .NET Core Backend Engineer

Asseco SEE. Jan 2022 - Dec 2023

```text
Contributed to a national business registry platform and developed backend services for large document management systems. Built high-reliability enterprise APIs using .NET Core and worked on complex MSSQL data models.
```

Skills: .NET-Core, C#, MSSQL, Document-Management, API-Development

### Senior .NET Core Backend Engineer

Interenergo. Jan 2017 - Dec 2023

```text
Built data acquisition and transformation pipelines, developed reporting services and scheduled backend jobs, and designed MSSQL data workflows for energy-trading operations. Focused on performance optimization and stability.
```

Skills: .NET-Core, C#, MSSQL, Data-Pipelines, Reporting, Performance-Optimization

## Education

### University of Ljubljana

Bachelor University degree, Electrical Engineering

```text
Bachelor University degree from the Faculty of Electrical Engineering.
```

## Tech stack

- Kubernetes
- MySQL
- PostgreSQL
- MongoDB
- Microsoft SQL Server
- .NET Core
- .NET
- ASP.NET Core
- C#
- Linux
- Docker

To contact Aleksandar, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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