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Hi, I'm Nikola Radic, a Senior Full Stack & AI Engineer based in Zagreb, Croatia, with a decade of experience architecting and delivering SaaS platforms, AI-driven products, and cloud-native systems. I specialize in React, Next.js, Node.js, Django, and FastAPI, and I deploy secure, scalable solutions on AWS, GCP, and Kubernetes. I enjoy leading distributed teams, crafting AI-powered UX, and turning ideas into production-grade software, while prioritizing impact, resilience, and ethical AI practices.…Hi, I'm Nikola Radic, a Senior Full Stack & AI Engineer based in Zagreb, Croatia, with a decade of experience architecting and delivering SaaS platforms, AI-driven products, and cloud-native systems. I specialize in React, Next.js, Node.js, Django, and FastAPI, and I deploy secure, scalable solutions on AWS, GCP, and Kubernetes. I enjoy leading distributed teams, crafting AI-powered UX, and turning ideas into production-grade software, while prioritizing impact, resilience, and ethical AI practices.

Nikola Radic

Full Stack Developer, AI Engineer, DevOps Developer, +2

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Hi, I'm Nikola Radic, a Senior Full Stack & AI Engineer based in Zagreb, Croatia, with a decade of experience architecting and delivering SaaS platforms, AI-driven products, and cloud-native systems. I specialize in React, Next.js, Node.js, Django, and FastAPI, and I deploy secure, scalable solutions on AWS, GCP, and Kubernetes. I enjoy leading distributed teams, crafting AI-powered UX, and turning ideas into production-grade software, while prioritizing impact, resilience, and ethical AI practices.…Hi, I'm Nikola Radic, a Senior Full Stack & AI Engineer based in Zagreb, Croatia, with a decade of experience architecting and delivering SaaS platforms, AI-driven products, and cloud-native systems. I specialize in React, Next.js, Node.js, Django, and FastAPI, and I deploy secure, scalable solutions on AWS, GCP, and Kubernetes. I enjoy leading distributed teams, crafting AI-powered UX, and turning ideas into production-grade software, while prioritizing impact, resilience, and ethical AI practices.

Available to hire

Hi, I’m Nikola Radic, a Senior Full Stack & AI Engineer based in Zagreb, Croatia, with a decade of experience architecting and delivering SaaS platforms, AI-driven products, and cloud-native systems.

I specialize in React, Next.js, Node.js, Django, and FastAPI, and I deploy secure, scalable solutions on AWS, GCP, and Kubernetes. I enjoy leading distributed teams, crafting AI-powered UX, and turning ideas into production-grade software, while prioritizing impact, resilience, and ethical AI practices.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

AI & Full Stack Engineer at iPlena

July 1, 2025 - September 18, 2025

Delivered AI-powered assistants for healthtech and automation using OpenAI API, LangChain, and Pinecone. Built document summarization bots, contract analyzers, and semantic search tools to streamline client operations. Developed Next.js + FastAPI platforms with Supabase and TailwindCSS enabling rapid MVPs for startups. Integrated AI-driven UX features such as conversational navigation and smart auto-fill to boost user adoption. Created internal prompt-engineering and model-evaluation tools, reducing experimentation time by 30%. Deployed serverless backends on AWS Lambda, API Gateway, and S3 to optimize infrastructure costs. Advised startups on AI adoption strategies and delivered workshops on AI architecture and ethical AI practices.

Senior Full Stack & DevOps Engineer at Sudonum (Pty) Ltd

May 1, 2023 - September 18, 2025

Designed and built SaaS solutions for lead management, call tracking, and WhatsApp integrations using React, Node.js/Django, and PostgreSQL. Deployed cloud-native infrastructure on AWS/GCP with Kubernetes and Docker, ensuring high availability for telecom-grade workloads. Implemented CI/CD pipelines with GitHub Actions, Terraform, and Helm, reducing deployment times and minimizing downtime. Created REST and GraphQL APIs powering integrations with CRMs like Salesforce and HubSpot. Led architectural reviews and tool selection, standardizing practices across distributed teams. Ensured GDPR compliance, secure deployments, and centralized monitoring, reducing incident response times and meeting regulatory demands. Facilitated cross-border agile collaboration, driving predictable delivery in a fully remote environment.

Backend Developer at Ars Futura

March 1, 2020 - September 18, 2025

Delivered backend microservices with Django and FastAPI for startup clients in fintech, healthcare, and IoT. Built secure REST APIs with OAuth2 and JWT, powering client applications with robust authentication. Tuned PostgreSQL and Redis clusters, reducing query times and improving scalability under high load. Automated workflows with Celery task queues, handling reporting, exports, and email campaigns at scale. Integrated third-party APIs such as payment gateways, CRMs, and messaging platforms, expanding client app functionality. Conducted security audits and code reviews, ensuring client systems adhered to OWASP and GDPR compliance. Mentored juniors on backend best practices, strengthening Ars Futura's engineering culture.

Full Stack Developer at Infobip

December 1, 2017 - September 18, 2025

Built customer-facing portals and internal tools with React and Node.js to support Infobip's messaging and communications platform. Developed mobile apps with React Native, integrating REST APIs and Firebase for secure messaging, notifications, and media capture. Implemented RBAC interfaces, reporting dashboards, and analytics tools, improving client visibility into communication data. Optimized React apps with Redux and profiling tools, improving responsiveness for high-volume enterprise clients. Automated CI/CD pipelines with CircleCI and Bitrise, accelerating app updates across Infobip's global user base.

Frontend Developer at Serengeti

August 1, 2015 - September 18, 2025

Delivered responsive web interfaces with HTML5, CSS3, and JavaScript for client projects across finance and telecom sectors. Implemented API-driven UIs with AJAX and JSON, streamlining communication between client frontends and backend systems. Refactored legacy web applications into modern, modular architectures, reducing bugs and speeding up client delivery. Ensured cross-browser compatibility and responsive design, meeting strict client usability requirements. Supported agile outsourcing projects, collaborating closely with distributed teams and client stakeholders.