Antonio S.

Antonio S.

Croatia
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About Me

Experienced Full-Stack Developer with a proven track record of building high-quality, scalable software products end-to-end. Antonio thrives in dynamic environments, communicates clearly with both technical and non-technical stakeholders, and consistently delivers clean, efficient solutions. Known for reliability, ownership, and a strong work ethic, Antonio takes pride in understanding the full scope of a product, from infrastructure and backend to polished user interfaces.

AI, ML & LLM

Artificial Intelligence Airflow LLM

Frontend

React.js Next.js Angular Svelte

Backend

APIs Node.js Python

Database

MongoDB SQL PostgreSQL

DevOps

Docker AWS Azure Data Factory Terraform Azure

Workflow

GitHub Actions

Other

Data Engineering Data Lakes ETL Kubernates Microservices Firebase Tensorflow Prefect Firebase Functions BigQuery S3 Firestore Raspberry PI Microsoft Intune Flutter Ionic Cordova Typescript

Work history

Analyzee d.o.0.
CEO / Software developer
2023 - 2025 (2 years)
Remote

  • Developed HotLeads: An Al-powered solution that analyzes user behavior on websites in real-time, compares it with historical data, and determines the optimal actions to increase conversions, encouraging customers to make a purchases.

  • Analyzee: SaaS product that leverages Al for task automation, data analysis, and insights to streamline business operations and decision-making.

  • Developed Backend microservices, integrated Firebase Functions, BigQuery, S3 storage, Compression & storage optimization, Query converters: MongoDB, Firestore to SQL, Custom Al models & LLM fine-tuning, Analysis tools & dashboard creation

PythonNode.jsFirebase FunctionsBigQuery S3MongoDBFirestore SQLAI LLM
Jaspero d.o.o.
Team Lead / Software developer
2022 - 2025 (3 years)
Remote

  • Team Lead: Innovation process for the development of the innovative product "Analyzee"

  • Organized and led the early stages of research and development for innovative technology (Research & Development phase)

  • Full-stack Development & Development of internal software tools

Jaspero d.o.o.
Software developer
2021 - 2022 (1 year)
Remote

  • Client Relations

  • Full-stack Development

  • Embedded Systems Development

Raspberry PIGitHub Actions Microsoft Intune
Reducos Software j.d.o.o.
Software developer
2020 - 2021 (1 year)
Remote

  • Frontend Development: Angular, Svelte

  • Backend Development: Node.js, Python

  • Mobile Development: Flutter, Ionic/Cordova

FlutterIonicCordovaAngularSvelteNode.jsPythonMongoDBPostgreSQLBigQuery Firebase
Jaspero d.o.o.
Software developer
2019 - 2020 (1 year)
Remote

  • Mobile Application Development: Cross-Platform (Ionic/Cordova)

  • Frontend Development: Angular, Svelte (Sapper)

  • Backend Development: Node.js, Firebase, Python

IonicCordovaAngularSvelteNode.jsFirebasePython

Education

Education
Internship - PHP development
Inchoo d.o.0.
2018 - 2018
Education
Internship - .NET development
Mono d.o.0.
2018 - 2018
Education
Bachelor of Mathematics and Computer Science
Department of Mathematics Osijek
2018 - 2025 (7 years)
Education
Highschool education
III. gimnazija Osijek
2014 - 2018 (4 years)