Stjepan Belčić

Data Engineering Lead · Oracle & AWS

Velika Gorica, Croatia · Open to remote

About · Projects · +385 91 904 5891 · Email · Download CV

Profile

Data Engineering Lead specializing in Oracle and PostgreSQL development, Oracle APEX applications, and AWS infrastructure support. Strong experience translating business requirements into scalable technical solutions while mentoring engineers and optimizing database performance.

Skills

Programming

  • Python
  • Oracle SQL
  • PL/SQL
  • PL/pgSQL
  • T-SQL

Databases

  • Oracle Database
  • PostgreSQL
  • MSSQL / SSMS
  • Performance tuning & indexing

Cloud & Infra

  • AWS (RDS, EC2, Lambda, S3)
  • API Gateway & Load Balancing
  • Linux administration
  • Apache Tomcat

Other

  • REST APIs, JSON, XML
  • Technical documentation
  • Agile / Scrum collaboration
  • Team leadership & mentoring

Experience

Data Engineering Lead

Qinecsa Solutions · June 19th 2025 – Present · Zagreb
  • Design, develop, test, and maintain Oracle PL/SQL and PL/pgSQL database structures
  • Build enterprise web applications using Oracle APEX
  • Optimize performance through indexing, tuning, and schema improvements
  • Support AWS environments including RDS, EC2, Lambda, S3, API Gateway
  • Mentor engineers and contribute to CI/CD readiness

Technical Consultant

SD Worx · April 2025 – June 2025 · Zagreb
  • Provided technical consulting within cloud and data environments
  • Participated in solution implementation and troubleshooting

Cloud Consultant

Insife ApS · March 2023 – March 2025 · Zagreb
  • Maintained AWS infrastructure across multiple environments
  • Configured automation workflows and frontend services
  • Supported Argus and Halo enterprise platforms
  • Collaborated with developers, managers, and client teams

Technical Consultant

Amplexor Adriatic · June 2022 – March 2023 · Zagreb
  • Handled migrations and database transformations
  • Tested developed features and supported deployments

Software Developer

Multicom · October 2020 – June 2022 · Zagreb
  • Developed PL/SQL database objects and integrations
  • Supported production deployments and large migrations
  • Delivered technical documentation and testing support

Student Software Developer

Multicom · June 2019 – October 2020 · Zagreb
  • Supported development of new system functionality
  • Performed manual database migrations and updates
  • Assisted integration testing and documentation

Projects

Collection of internal Oracle, PostgreSQL, AWS, and Oracle APEX initiatives focused on performance optimization, automation, and infrastructure reliability.

View full projects →

Education

Computer System Maintenance, bacc. ing. techn. inf.

Veleučilište Velika Gorica · 2017 – 2020

XV. gimnazija

2010 – 2015 · Zagreb

Languages