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Janko SajicJS
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Janko Sajic

@jankosajic

Full-Stack .NET Software Engineer at CUBE TEAM building a data analytics platform that processes millions of records.

Serbia
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At CUBE TEAM, I developed a large-scale data analytics platform processing millions of records. I delivered end-to-end features across frontend, backend, databases, and DevOps.

I designed scalable solutions, architectural patterns, and reusable components, and optimized performance, scalability, and maintainability through refactoring and best practices. I also coordinated code integration, deployments, and releases with internal and external teams.

At MTS - sistemi i integracije, I migrated a legacy monolith to a microservices architecture and developed high-performance .NET Web APIs. I also integrated enterprise systems and implemented business features.

At B2BEE, I developed a sales analytics and business intelligence platform, designed ASP.NET Core backend services and data solutions, and integrated Azure services to automate workflows. Earlier, I developed a custom ERP system at BANKOM and built ASP.NET applications and a C# WinForms POS application at PETROLSOFT.

Experience

Work history, roles, and key accomplishments

MI

.NET Software Engineer

MTS - sistemi i integracije

Jun 2024 - Sep 2025 (1 year 3 months)

Migrated a legacy monolith to a microservices architecture. Developed and maintained high-performance .NET Web APIs.

PE

Junior Programer

PETROLSOFT

Jan 2021 - Jan 2022 (1 year)

Developed ASP.NET web applications and user management systems. Built a C# WinForms POS application for sales, inventory, and fiscal operations.

Education

Degrees, certifications, and relevant coursework

AS

Academy of Technical and Art Applied Studies

Graduate Engineer, Computer and Information Science

2019 - 2022

Graduate Engineer of Computer and Information Science from the Academy of Technical and Art Applied Studies, completed in 2022.

FM

Faculty of Mathematics

Statistics, Financial Mathematics and Actuarial Science

2016 - 2019

Studied statistics, financial mathematics, and actuarial science at the Faculty of Mathematics from 2016 to 2019.

Tech stack

Software and tools used professionally

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