A short path from idea to production.
Web apps, integrations, online stores and websites. We work with companies for which software is a real tool — not just an online presence.
Web applications, websites and online stores.
From a single page, through a shop, to a full web platform. Scale picked to fit the need — not the other way around.
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Web applications
Custom platforms, dashboards, integrations with systems and APIs. Stack picked per project — from MVP to a production system handling real traffic.
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Websites & e-commerce
Landing pages, storefronts and small business sites. Fast, accessible, easy to maintain — without the WordPress overhead.
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Ongoing partnership
Maintenance, iteration and support after launch. We work long-term with clients who want their product to keep moving, not freeze in place.
Selected projects.
A slice of what we've shipped. Every link points to a live site.
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Training marketplaceznanyszkoleniowiec.pl
Full-scale platform matching companies with trainers and speakers — profiles, search, inquiry flow and an admin panel.
View site → -
Training platformszkoleniasokrates.pl
Site with a shop module, event registration and course catalogue for an established training company.
View site → -
Foundation websiteedumontis.pl
Site for the EduMontis foundation with a calendar, donations module and extended accessibility for users with disabilities.
View site →
Four steps. No corporate theatre.
- 01
Conversation
30–60 minutes to understand goal, constraints and context. We say so plainly if it's not a fit.
- 02
Proposal
A concrete proposal: scope, timeline, cost. No hidden line items, no 'starting from'.
- 03
Build
Short iterations, regular previews, one point of contact on our side. No three-week disappearances.
- 04
Launch & support
Go-live, team handover and post-launch support. We stick around — the product keeps going.
Two friends. One studio.
We're Marcin and Tymek — we've known each other for more than 20 years and have been working together for several. Both of us have spent years in commercial international IT projects. MZSoft is how we do this on our own terms: no agency layer, no middlemen, clear ownership.
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Marcin Zajonc
Engineering
I run the technical side — architecture, code, deployment. Several years of commercial experience on international projects.
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Tymoteusz Stalmach
Product & UI
I translate what the client needs into what gets built. Background as Product Owner and PM, passionate about web UI.
From the blog.
- Jun 5, 2026
WordPress or a custom website? When each one pays off
WordPress or a custom build? We compare cost, performance, security and maintenance to help you pick the right fit for your business.
- May 26, 2026
How much does it cost to build a web application in 2026?
What drives the cost of a web app? Real price ranges, the factors behind a quote, and how not to overpay — explained simply, with specifics.
- May 12, 2026
Software house or freelancer? How to choose for your project
Software house, freelancer or agency? A practical comparison of cost, risk and speed to help you choose who builds your app or website.
How much does a website or web application cost?
It depends on scope, but we like specifics. A simple company website or landing page starts at around 1–2 thousand złoty, a small shop usually runs a few thousand, and a full web application starts from the low tens of thousands and up. After the first call you get a quote with a concrete figure — no vague 'from…' and no hidden line items.
Do you also build simple sites, e.g. on WordPress?
Yes. We work on large platforms, but we're just as happy to build a simple, low-maintenance company website — including on WordPress or a ready-made template, if that's the best fit for your budget. We pick the tool to fit the need, not the other way around, and we won't push a pricier option when there's no reason to.
How long does a project take?
We usually deliver a company website in 2–4 weeks, a shop or larger site in 4–8 weeks, and we build web apps in short iterations with regular previews — a first working version typically lands in 4–6 weeks.
How is a software house different from an agency or a freelancer?
You work directly with the people who write the code and design the product — no middle layers, no handing the project between people. Unlike a single freelancer, we cover the full set of skills (engineering + product) and we don't disappear as the project grows.
Do you handle maintenance after launch?
Yes. After launch we stay in touch — we maintain, develop and support products long-term. We can set up an ongoing arrangement or work on a per-task basis as needed.
What technologies do you use?
We pick the stack to fit the project, not the other way around. For larger applications that's usually modern web technologies (Angular, TypeScript, Node and friends). For simpler sites we reach for lighter solutions or WordPress — so they stay fast and cheap to maintain. If an approach doesn't make sense in your case, we'll say so up front.
Do you work remotely and with clients across Poland?
Yes. We work fully remotely and partner with companies across Poland. The whole process — from the first call through previews to launch — runs online.
Tell us what you're working on.
We respond within 1 business day.
- kontakt@mzsoft.pl
- Phone
- +48 510 950 128
- Tax ID (NIP)
- 6452578025