Matko Klaić

I have lead the initiative of complete repository layer replacement with different technology. I have been promoted to Security Champion. I have implemented infrastructure provisioning with automation tools.

I reduced infrastructure cost by optimising data import processes handing billions of records emitted by intralogistcics IoT equipment.

I managed AWS infrastrukture with Terraform and Pulumi.

I harnessed import processes with strong observability dashboard.

• Delivered a community platform for soft tip dartboard players by architecting and developing a full-stack web application using Next.js, React, Redux, and Tailwind CSS on the front end, alongside Supabase serverless functions and PostgreSQL for back-end data management.
• Implemented serverless architecture to optimize infrastructure costs and improve scalability, resulting in enhanced application responsiveness and seamless user experience.
• Managed complex state with Redux to enable real-time updates and interactive features that increased community engagement.
• Designed and maintained normalized PostgreSQL database schemas ensuring data integrity and reliable transaction processing for user and game data.
• Coordinated deployment of integrated front-end and back-end components, achieving low latency and fast load times across the application.
• Collaborated across the full software development lifecycle, driving iterative feature improvements based on user feedback and analytics.
• Implemented Electron desktop client for a client's HR department. At the time, the company was using a mobile app for their employees, and the goal was to provide HR staff with a dedicated desktop solution. The backend API already existed and was in production, so my work focused on building out the desktop client that integrated with it, handling things like the UI, state management, authentication flow, and consuming the existing API endpoints.

• Designing zero-downtime rolling deployment by launching a custom deployment pipeline using AWS EC2 launch templates, post-launch scripts, and secure credential management with AWS Secrets Manager, improving release stability and minimizing user disruption.
• Configured GitHub Actions for CI/CD automation, integrating build and deploy processes into the workflow, which reduced deployment time and manual intervention by 40%.
• Strengthened application security by creating custom AWS IAM roles and fine-grained permission sets, ensuring least-privilege access across cloud infrastructure components.
• Built and maintained a cloud-native asset-creation dashboard using React, Tailwind CSS, Node.js, and TypeScript, enabling designers to streamline asset workflows through a responsive and intuitive interface.
• Collaborating closely with product owners and lead designers to deliver key UI/UX enhancements, translating user requirements into functional front-end components aligned with modern agile delivery practices.
• Implementing backend API endpoints using Express.js, handling asynchronous data flows and securing application logic for efficient and scalable interactions between frontend and backend layers.
• Supporting continuous improvement efforts by performing code reviews and participating in sprint retrospectives, contributing to improved team velocity and deployment quality.