Looking for a job

Leon Šebrek

@leonebrek

Message

I’m a Senior full-stack engineer building scalable enterprise web and cloud-connected platforms.

Croatia

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What I'm looking for

I’m looking for a full-stack role where I can build scalable, reliable enterprise systems—shipping frontend and backend features with strong CI/CD, cloud deployments, and close Agile collaboration.

I build production-ready enterprise web applications and cloud-connected platforms with a focus on reliability, performance, and scalable architecture. With 7+ years of experience across fintech, insurance, healthcare, and digital services, I bring end-to-end ownership from frontend to backend.

I develop responsive frontend applications with React, Vue.js, and TypeScript, using reusable components, dashboards, and form-driven workflows. On the backend, I build REST APIs and business logic with Node.js and Express.js, and I work with data modeling and query optimization using PostgreSQL, MongoDB, and other databases.

I also strengthen delivery and operations through automated build/test/release workflows, CI/CD, and cloud deployments using AWS, Docker, and Kubernetes (plus OpenShift/Helm where relevant). I’m comfortable collaborating in Agile/Scrum with product, design, QA, and engineering teams to ship reliable features and resolve production issues.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Tact-OPS

Dec 2025 - Present (7 months)

Developing scalable full-stack web platforms with an emphasis on performance and production reliability, including responsive React/TypeScript frontends and Node.js/Express.js REST APIs. Building CI/CD automation and deploying cloud-based applications on AWS using Docker and Kubernetes.

Full Stack Architecture React TypeScript Dashboarding Node REST APIs Authentication Testing Agile Development GitHub Actions CI CD Pipelines AWS Docker Kubernetes

Senior Full-Stack Engineer

Adcubum Hrvatska

May 2023 - Nov 2025 (2 years 6 months)

Delivering features and improvements for policy, claims, and customer management by building React/TypeScript interfaces and Node.js/Express.js backend services with REST APIs. Automating builds and deployments with Azure DevOps and managing releases using Docker, Kubernetes, OpenShift, and Helm.

React TypeScript Node REST APIs Azure DevOps Build Automation Testing Automation Deployment Docker Kubernetes OpenShift Helm Refactoring Agile

Senior Software Engineer

King ICT

May 2021 - Apr 2023 (1 year 11 months)

Building enterprise web applications across healthcare, retail, and digital services by developing React/Vue.js/TypeScript frontends and Node.js/Express.js backend REST APIs. Improving application performance using PostgreSQL and MongoDB and enhancing quality with Jest testing, code reviews, and refactoring.

React Vue.Js TypeScript Node REST APIs Authentication PostgreSQL MongoDB Query Optimization Jest Debugging Refactoring Code Review Agile Scrum

Front-end Engineer

Younited Agency

Sep 2018 - Feb 2021 (2 years 5 months)

Developing enterprise frontend applications and internal business platforms using React and Vue.js, including reusable UI components and responsive interfaces. Integrating REST APIs to deliver data-driven features and improving frontend code quality through debugging and cross-browser optimization in Agile cycles.

React Vue.Js UI Components REST APIs Debugging Agile