We design and build IT systems
System architecture, development, e-commerce, fintech, IoT. From idea to a working product.
// Expertise
What we do
We build systems from architecture to deployment.
System architecture
Microservices, event-driven systems and integrations — we design solutions that scale and survive failures.
IT systems development
Custom software from backend to frontend and mobile apps — solid code, tests and ownership of what runs in production.
E-commerce
Years of Magento 2 projects: from implementations and integrations (payments, logistics, ERP) to keeping stores running in production.
Fintech
Financial systems where every cent counts — we are also building our own product in this domain, so we know its problems from the inside.
IoT & Embedded
Sensors, automation and control — our own products (ExoticClimate, Smart-Glance) run on this stack every day.
Tell us about it — we enjoy unusual challenges.
Write to us →// Portfolio
Our projects
We build for clients as well as our own products.
ExoticClimate
A quiet guardian for exotic plants — it watches the microclimate and protects against frost while you sleep. For palm and citrus enthusiasts in cold climates.
BudgetBalance
Your home and business budget in one place — the full picture of your finances without spreadsheets.
Smart-Glance
A mirror that greets you with your day at a glance — weather, calendar and your home, before you head out.
// About us
Engineers
with a passion for products
E4T is a team of engineers with a passion for building products. We have been operating since 2019, backed by 32 years of the founder’s experience in IT. We combine system architecture expertise with a practical approach to business problems.
We build for clients as well as our own products — we know how to deliver value, not just code. We understand what it means to own a product in production.
E4T Sp. z o.o. founded in Puławy.
Warsaw branch opened. Growing expertise in IoT and embedded systems.
Work begins on Smart-Glance — a magic mirror for the smart home.
Work begins on ExoticClimate — an IoT platform for exotic plants.
ExoticClimate enters real-garden testing. Work begins on BudgetBalance.
Code quality
Clean architecture, unit and integration tests, code review. We write code that can be maintained.
Delivery
From MVP to production. We don’t just design — we ship, monitor and grow products.
Partnership
Long-term collaboration, not one-off gigs. We understand the client’s business, not just the technology.
// Contact
Get in touch
Write to us — we reply within one business day.
ul. Hugona Kołłątaja 28/14
24-100 Puławy, Poland
04-965 Warsaw, Poland
We reply within 1 business day