Looking for a job

Etjen Buljubašić

@etjenbuljubai

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I build end-to-end healthcare, warehouse, IoT, and analytics systems across .NET, Java, and modern web stacks.

Bosnia and Herzegovina

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What I'm looking for

I'm seeking remote software engineering opportunities where I can deliver end-to-end production systems, contribute across backend and frontend development, and work with occasional travel or on-site collaboration.

I've delivered production systems across healthcare, warehouse management, industrial IoT, and analytics. At SSI SCHÄFER, I build Java and Quarkus backend services, CrateDB time-series processing, and Angular components for WAMAS warehouse analytics.

At Vabelmat FlexKapG, I led development of a thermal-efficiency platform spanning architecture, Spring Boot, React, PostgreSQL, and IoT integration. I also independently sold and delivered a C#/.NET, Blazor, and SQL Server warehouse management system that remains in active daily use, and built healthcare systems at Berg with .NET, Blazor, HL7, and FHIR integrations.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

SSI SCHÄFER

Jul 2026 - Present (3 months)

Contributed to the development of a time-series analytics module within the WAMAS warehouse management system, developing backend services with Java and Quarkus, using CrateDB for time-series data, and implementing Angular components for data analysis and visualization.

Java Quarkus CrateDB Angular Time Series Analytics WAMAS

Software & Data Engineer

Vabelmat FlexKapG

Sep 2025 - May 2026 (8 months)

Led technical development of a thermal-efficiency platform in a startup environment, covering system architecture, backend and frontend development, database design, and IoT integration. Developed the platform using Spring Boot, React, and PostgreSQL, and programmed IoT devices for data collection and transmission.

Spring Boot React PostgreSQL IoT System Architecture Database Design

Independent Software Developer

SAR Čaušević

Feb 2024 - Mar 2025 (1 year 1 month)

Developed, sold, and commercially delivered a custom warehouse management system for an automotive services company, collaborating with a UI/UX designer. Implemented barcode-based inventory intake and withdrawal, real-time stock tracking, invoice generation, and operational reporting.

C#.NET Blazor Entity Framework SQL Server REST APIs Barcode Integration

Software Engineer

Berg

May 2023 - Aug 2024 (1 year 3 months)

Played a central role as a full-stack software engineer developing and maintaining complex healthcare systems, including a Radiology Information System (RIS) and a Patient Portal, with .NET MVC, .NET APIs, and Blazor WebAssembly. Contributed to a Cytology-Pathology system and ensured interoperability through HL7 and FHIR integrations.

.NET MVC .NET Web API Blazor Angular HL7 FHIR SQL Server Healthcare Systems

Independent Software Developer

MedLabO

Mar 2023 - Feb 2024 (11 months)

Designed and developed an end-to-end medical laboratory management platform with an ASP.NET backend and Flutter mobile and desktop applications. Implemented role-based access, patient and laboratory-result management, appointment scheduling, Stripe payment integration, RabbitMQ messaging, and ML.NET-based service recommendations.

C#ASP.NET Flutter Dart RabbitMQ Docker Docker Compose ML.NET Stripe

Education

Degrees, certifications, and relevant coursework

University of Graz

Master of Science, Computational Social Systems

2024 -

Pursuing a Master of Science in Computational Social Systems at the University of Graz and Graz University of Technology, with an expected completion in 2026.