We design, build and run business-critical web and mobile systems for companies across the EU and the US. A senior nearshore team in Zagreb since 2013, with a security review built into every delivery.
We do not do everything. We go deep on the four things every serious product needs, and we have done each of them for over a decade.
Custom web applications, e-commerce and ERP systems on Laravel 12 and PHP 8.4, built modular so they stay maintainable for years.
Servers, pipelines and monitoring for the systems we build and the ones you already run. Hetzner, DigitalOcean and our own hardware, kept patched.
Cross-platform iOS and Android apps that share one TypeScript codebase with your web platform, shipped through EAS and the app stores.
Penetration testing and secure development for web and mobile applications, done by engineers who also build them. Certified by Offensive Security.
Our tagline has read Quality, Technology, Security since 2013. In practice it means the people who write your code are the same people who try to break it before anyone else can.
How we testA few of the platforms we built and still operate.
A booking system where every trip can carry deposits, mandatory extras and taxes, separate child and adult prices, room limits and a choice of payment methods. Offers, bookings and invoices come from the same data.
A single Laravel platform runs the company: web shop, warehouse and stock, a React point-of-sale app in the stores, Maksomat vending machines, invoicing and reporting. Over a million product-to-device compatibility links keep the catalog accurate on every channel.
Issuing, receiving and archiving EN 16931 UBL e-invoices with B2B and B2G exchange, Croatian fiscalization (JIR and ZKI), POS integration and a REST API for ERPs and web shops. Inbox and outbox processing run unattended.
Our own hosting brand: customer panel, billing, provisioning and mail, running on servers we administer in EU data centres and our own rack.
Over 1,170 projects since 2013 across tourism, retail, publishing, hosting and finance.
All case studiesAll three come with a senior engineer on the other end and an EU contract.
For teams that need capacity now
One of our seniors joins your team for 80 to 160 hours a month. Your repository, your process, our engineering.
from €680 per day billed monthly, EUR invoice, no recruitment fee
For new products and rebuilds
A short discovery, then a fixed quote with milestones. Delivered with a penetration test and documentation.
projects from €8,000 fixed price after discovery
For systems already in production
Monitoring, patching, backups and a response time you can rely on, for Laravel apps, servers and mobile apps.
from €400 per month per system, cancel with 30 days notice
Prices are indicative and exclude VAT. EU companies with a VAT ID are invoiced with reverse charge; US clients receive USD invoices. Fixed quotes follow a discovery call.
Yes. Extreme IT d.o.o. is a Croatian company in the EU. We contract business to business, invoice in EUR or USD, sign NDAs and data processing agreements, and overlap with US East Coast mornings. Croatia is on Central European Time, six hours ahead of New York.
Yes. Croatia is in the EU and on Central European Time, so we share working hours with DACH and Benelux and are one hour ahead of the UK. Contracts and invoices are EU business to business, in EUR, with reverse-charge VAT where it applies.
Senior engineers who have been with the company for years, including the founders. No outsourcing and no juniors learning on your project.
Regularly. We start with an audit of code, infrastructure and security, then agree on a plan: stabilise first, upgrade second, new features once the base is solid.
You do, from day one. We work in your repositories and cloud accounts whenever possible, and hand over everything if we ever part ways.
A dedicated engineer can usually start within two weeks. Projects begin with a discovery call this week and a written scope a few days later.
A 30-minute call is enough to tell you whether we are the right team and roughly what it would cost.