Senior Backend Developer

Panca Solutions is Marko’s independent consulting firm, providing high-quality backend services to international clients with a focus on clean architecture and performance.

• Developed and built scalable backend systems, emphasizing event-driven architecture, API integrations, and performance tuning.
• Delivered customized solutions using Golang, PostgreSQL, and Redis, applying modern backend practices to meet client needs.
• Ensured a secure and maintainable infrastructure, including CI/CD pipelines and monitoring systems.
• Maintained active involvement throughout the entire development lifecycle, from requirements gathering to deployment.

Digihey is a Croatian software development agency creating high-quality digital products for global startups and enterprises. Marko contributed to a CRM-focused SaaS platform used by enterprise sales teams for contact and data synchronization.

• Built and implemented a comprehensive integration with Pipedrive’s API, enabling users to view, sync, and edit contacts directly within the platform.
• Migrated and enhanced HubSpot CRM integration capabilities while maintaining backward compatibility and introducing broader system improvements.
• Developed efficient data synchronization logic in Go using GORM and PostgreSQL, ensuring fast and reliable access to remote CRM data.
• Implemented robust user-specific data access control supporting multiple CRM accounts and per-session authorization.
• Worked with RESTful architecture, authentication flows, and data mapping logic under tight deadlines.
• Increased platform maintainability by creating modular services, writing unit tests, and documenting data flows.

UniqCast offers IPTV/OTT/DVB video solutions for telecom operators worldwide. Marko played a key backend engineering role across several streaming projects.

• Built high-performance video services with Go, supporting real-time HLS streaming through custom CDN infrastructure.
• Reduced API response times by 40% using query optimization and Redis-based caching strategies.
• Migrated legacy services from Node.js to Golang, creating a custom API framework and enhancing scalability.
• Led real-time DRM encryption integration (FairPlay, Widevine), ensuring secure cross-device content delivery.
• Resolved over 100 production incidents, improving observability with enhanced logging and custom tools.

Acquaint is a company focused on developing AI-driven data integration and analysis systems for enterprise applications. Marko was responsible for backend systems, DevOps tooling, and team mentoring.

• Developed and maintained distributed Java-based microservices that handled real-time AI data integration pipelines.
• Designed CI/CD workflows using Jenkins and Bash, significantly reducing deployment times across staging and production environments.
• Deployed containerized systems on GCP and Oracle Cloud via Kubernetes, ensuring resilience and scalability.
• Set up Prometheus and Grafana dashboards with custom alerts to monitor critical services and enhance system observability.
• Implemented secure JWT-based login and refresh token management for API access control.
• Managed asynchronous tasks using RabbitMQ between services, improving modularity and response times.