Massimo Gruičić
Senior frontend, mobile and full-stack engineer. Founder of Noots d.o.o.
For more than ten years I have built web and mobile applications: from banking and institutional systems in Zagreb and Brussels to startups and AI products. I started as a Java developer, and today I mostly work on React and React Native apps and on integrating AI services.
Noots is how I work. I talk to the client, decide the architecture and control the result, while AI tools speed up the build. That way one person can deliver what used to take a whole team.
- Location
- Zagreb, Croatia
- Working
- Remotely and in person in Zagreb
- Languages
- Croatian, English
- Education
- Master of Traffic and Transport Engineering
What I work with
- Frontend
- React, TypeScript, Next.js, Vite, Tailwind CSS, Material UI, shadcn/ui, Redux, Zustand, TanStack Query, Vue, Angular
- Mobile
- React Native, Expo, EAS Build, iOS and Android
- Backend and data
- Node.js, NestJS, Python (Django, FastAPI), PHP (Laravel), Java and Spring Boot, REST and GraphQL, PostgreSQL, MongoDB, Redis, Supabase, Firebase
- Cloud and DevOps
- AWS, Azure, Vercel, Docker, Kubernetes, CI/CD (Jenkins, GitHub Actions)
- AI and integrations
- OpenAI GPT-4o and o3, Claude API, RAG and vector databases, LangChain, Whisper, HeyGen, Dify, Stripe, WhatsApp Business API, Zoho CRM
- Testing
- Jest, React Testing Library, Cypress
Experience
From banking and institutional systems to startups and my own company.
Oct 2025 to now
Senior Application Developer, own company
Noots d.o.o.
Leading the build of web and mobile apps for clients and own products: architecture, React and React Native, AI integrations and cloud delivery.
Sep 2023 to now
Senior Frontend Developer, own sole proprietorship
Pingu
Client work through my own sole proprietorship: set the architecture of a greenfield project from scratch and wrote the documentation.
Feb to May 2024
Senior Frontend Developer
Digihey
Built the oxbow.health web app from start to production in three months, in a two-person team.
Oct 2023 to Jan 2024
Senior Frontend Developer
CIAL Dun & Bradstreet
Developed and optimised React UIs, refactored legacy applications and contributed to the Docker setup of a microservices architecture.
Feb to Sep 2023
Team Lead, Full Stack Developer
QVC
Led the team on an analytics dashboard for event planning: a React frontend, Java microservices, PostgreSQL and CI/CD with Jenkins, Docker and Kubernetes.
Aug 2022 to Feb 2023
Full Stack Developer
Orange Bees
A component library for the company website and an outage notification system built from scratch: 10 microservices, Spring Security with Azure, ActiveMQ.
Mar to Aug 2022
Frontend Developer
DEPT
Reusable React components from scratch, a Redux store architecture with custom reducers and API communication patterns.
2021
Full Stack Developer
EPAM
Globalization Partners (a platform for 180+ countries): migrated legacy Java apps to microservices, optimised payroll queries, deployed on AWS.
May 2019 to Jul 2020
Full Stack Java Developer
Fujitsu Belgium
GOALKEEPER for the EEAS (European Commission): a recruitment web application for EU institution positions, built from scratch, frontend and backend.
Jul 2018 to Mar 2019
Full Stack Developer
Serengeti
FINA e-Invoice, the Croatian national platform: new Java features and a complete frontend migration from jQuery to Angular 5.
2017
Java Developer
Stratus IT
The Nausys web application in Vaadin and a migration of critical data from Riak KV to Cassandra with data integrity preserved.
2016
Frontend Developer
Zagrebačka banka (UniCredit Group)
Frontend solutions in JavaScript and jQuery, SharePoint-based applications and mentoring of student workers.
Let's talk about your project.
Tell us what you need. We will send a scope estimate and a price range shortly, with no obligation.