Mario Katalinic
Mario Katalinic

Implementation Specialist / Solution Architect

Open to offers · Member since 22 Aug 2026
Message
Location
Zagreb, Croatia
Desired salary
Unspecified
Work preference
Remote Only / Full Time, Freelance
Experience level
Mid

About

Professional summary

I am an Implementation Specialist and Solution Architect with experience delivering cloud-based SaaS platforms, backend integrations, and IoT solutions. I work across requirements analysis, technical solution design, system configuration, deployment, and post-go-live optimization.

I have strong backend development and integration experience using Python, JavaScript, REST APIs, JSON, FastAPI, Node.js, and event-driven architectures. I focus on building scalable, reliable systems that enable seamless interoperability between platforms and client environments.

In my current role, I lead end-to-end enterprise client implementations, coordinating stakeholders while translating business, technical, and compliance requirements into practical platform solutions. I also provide troubleshooting, optimization, and technical guidance after deployment.

My IoT background includes real-time data processing, device configuration, MQTT-based integrations, PostgreSQL, Cassandra, Apache Kafka, and sensor data workflows. I am currently building a smart waste management IoT platform covering device ingestion, dashboards, collection planning, analytics, mapping, and role-based access management.

I also bring extensive project management, technical documentation, reporting, client communication, and multilingual localization experience. I am open to remote opportunities and relocation within the European Union.

Notice period: 1 month

Skills

30 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Implementation Specialist / Solution Architect Thentia

I lead end-to-end implementations of cloud-based client platforms, including solution design, configuration, stakeholder coordination, and alignment with business and compliance requirements.

I develop and maintain backend and integration logic using JavaScript, REST APIs, and JSON. I define technical specifications, implement API-driven solutions, and provide post-deployment troubleshooting and performance optimization alongside engineering teams and client administrators.

IoT Implementation Specialist Omega-Software

I designed and deployed IoT solutions supporting real-time data processing with PostgreSQL, Cassandra, and Apache Kafka.

I configured and calibrated IoT devices to client technical and operational requirements, collaborating with developers and project managers to resolve implementation issues.

Technical Department Assistant Bina-Istra

I supported infrastructure projects through documentation control, reporting, regulatory alignment, and internal IT and administrative assistance.

I monitored Environmental and Social Action Plans and Stakeholder Engagement Plans, while assisting with feasibility studies, presentations, sustainability activities, and accountability reporting.

Project Manager International NGO

I managed projects across construction, social inclusion, and publishing, with responsibility for budgeting, reporting, planning, and stakeholder communication.

I coordinated workshops, campaigns, and multilingual publications for diverse communities, and translated and localized content to ensure culturally accurate communication.

IT and Technical Translator Crotext & Freelance

I deliver technical translation services for IT and telecommunications clients, including T-Mobile, Visa, and Oracle.

I specialize in accurate and consistent translation and localization of technical content, documentation, and terminology.

Education

Learning history

VERN’ University of Applied Sciences

Bachelor of Science, Internet of Things and Computing

Bachelor program in Internet of Things and Computing (univ. bacc. ing. comp.). Core curriculum included IoT systems, embedded and distributed systems, networking, SQL and NoSQL databases, operating systems, electronics, and systems security. GPA: 4.8 / 5.0.

TVZ Lifelong Learning Programme

Professional Training, Python, Linux and Containers

A 20 ECTS professional training programme focused on Python-based application development, Linux systems, containerization, and IT operations.

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