Technology partner, not an agencyReply within 48 h

Whatifwesolvedyourpainfulbusinessproblemin30days?

Custom software for companies that want to reclaim the time and resources they are losing. The code plus full documentation are entirely yours.

Computer VisionMachine LearningAI Company ChatProcess AutomationAPI IntegrationsWeb ApplicationsMobile ApplicationsHigh-Performance SystemsMES SystemsDocument OCRDefect DetectionDemand ForecastingKSeF e-InvoicingDashboardsData MigrationGDPR & PrivacyPerformance Optimisation

Ready for different challenges: from high-performance systems, through mobile apps, to systems in less common technologies.

What we work with / Languages / Tools
01Computer Vision
02Machine Learning
03AI Company Chat
04Process Automation
05API Integrations
06Web Applications
07Mobile Applications
08High-Performance Systems
09MES Systems
10Document OCR
11Defect Detection
12Demand Forecasting
13KSeF e-Invoicing
14Dashboards
15Data Migration
16GDPR & Privacy
17Performance Optimisation
01Rust
02Python
03TypeScript
04C
05C++
06C#
07Go
08Java
09Kotlin
10Swift
11Lua
12Assembly
13Elixir
14Scala
15Delphi
16Lisp
17Zig
18Fortran
19F#
20Prolog
21COBOL
22Erlang
23OCaml
24Ada
01Astro
02Svelte
03Next.js
04Nuxt.js
05React
06Vue.js
07Node.js
08Deno
09Bun
10Fastify
11Axum
12FastAPI
13Django
14Phoenix
15WebAssembly
16WebGPU
17PostgreSQL
18Redis
19Docker
20Kubernetes
21Terraform
22Cargo
23uv
24TensorRT
01Who it's for

We build software that frees you from whatever is slowing you down.

Does the same problem come back every week and cost you time again?

01ERR

A slow site loses customers

A customer waits a few seconds for the page and closes the tab. The colors, shapes, fonts and content don't build trust. A fast, well-built site opens new routes to your customers.

02ERR

Manual, repetitive work

The same tasks waste your team's hours every day and clutter the to-do list. Automation takes over that step for good: the team stops doing it by hand, not just does it faster.

03ERR

Data scattered across spreadsheets

The numbers live in dozens of files, and no one trusts any of them. One system collects and updates data from many sources in one place, so decisions rest on numbers that are current right now, not from last week.

04ERR

No internal tooling

Off-the-shelf tools do not fit your process, or are not integrated with it, so the team survives on manual workarounds. Custom software adapts to you: you get a tool built around your actual process, not a generic product you still have to work around by hand.

05ERR

A product idea with no one to build it

You have a product idea but no one to hand it to. We take you the whole way from the idea to a working product, supporting every decision along the way and delivering a finished solution.

The cost of waiting

An unsolved problem costs you every day, and grows every month.

See what it's costing you →
02Why us

What you can count on, before you sign anything

Direct contact with the engineer writing your code: no middlemen, no sales layer between you and the work. Instead of empty promises, we show exactly how we work.

Difference

Code ready to deploy, not an app-generator demo

AI app generators produce a pretty demo that breaks under real traffic. We hand over code covered by tests, with errors handled and load behavior we have actually checked.

Ownership

The code and documentation are yours

Once you pay, everything belongs to you: source code, documentation, access. Nothing ties you to us: keep developing the product with us or with any other team.

Safety

Staged delivery, rights on payment

We work in stages with separate sign-off, and economic rights to the code transfer to you the moment you pay. No large wire transfer in the dark: you pay for a confirmed result.

03Portfolio

What we've built

You don't have to take our word for it. Every project below opens with one click, so you can check it yourself. Everything here is our own in-house software: we built it and we run it, so you judge the work itself, not references.

AstrOS mission console: a globe of Earth with 50,000 satellite orbits and a NASA telemetry panel
Performance

AstrOS Engine

A live 3D map of 50,000 satellites

Tens of thousands of objects in orbit, rendered in the browser, with live NASA and NOAA telemetry. No install, no plugins: the scene runs on your own graphics card, which is what keeps it smooth at that object count.

The engine was built from scratch in Rust, compiled to WebAssembly, rendered through WebGPU. The demo runs on your hardware.

In-house project registry

CivicFlow

Public sector

Issue-reporting portal for municipalities, cities and local enforcement

Millwright: strona projektu

Manufacturing

Information page for the Millwright MES system, for buyers

Want something like this for your company?

Talk about your project
04Audit & modernization

Old software can be fixed, not just replaced

We audit what runs slowly, looks outdated, or costs more than it should, and fix it from the backend to what the customer sees.

Audit

You know exactly what's slowing the system down

We check the code, infrastructure and performance: what runs slowly, what uses too many resources, and where maintenance costs the most. You get a report with concrete steps, not generalities.

Modernization

We rewrite for technology that will hold up in 5 years

We migrate old code to current languages and frameworks, clean out what's unnecessary, and update libraries and documentation. We pick tools for your case, not for the trend.

UX & SEO

A look and copy that bring customers in

We improve readability, mobile handling and load speed, and fit the content to how people actually search online.

Data & reporting

No more clicking through spreadsheets by hand

We write scripts that collect data from multiple sources, clean it, and build readable charts and summaries. What eats someone's whole day in Excel today can happen on its own.

Want to know exactly what's worth fixing in your case?

Get my free technical audit
05Process

From the first sentence to launch in four steps

You know what you're getting and when. Clear scope, agreed cost, predictable timeline. No surprises along the way.

Describe the problem

One sentence is enough, we will ask about the rest.

We respond in 48 hours

You learn whether it can be done, and at what fixed price.

We build

We show progress as we go, you can change direction.

We hand it over

A working product with the code and documentation, in 30 days.

Low risk

We start with a small, self-contained stage. If you don't see the value, we don't go further.

Describe your problem
06FAQ

Before you ask

How much does a project cost?

Projects start at around 15,000 PLN, and the exact price depends on scope, so we quote each one separately. Once you describe the problem, we come back within 48 hours with a fixed price. You know the cost before anything starts. Payment is staged: a deposit reserves your slot in the calendar, the rest is paid as you accept each stage. Everything comes with a VAT invoice (faktura VAT).

Is the intro audit really free?

Yes, no catch. We check three things: what the problem is, how to solve it, and how long it takes. Within 48 hours you get a plan and a fixed price. You keep the report either way. No sales deck.

Will you really deliver it in 30 days?

We close most projects within 30 days, but we don't over-promise: the deadline is set in the quote. We start with a small, self-contained stage, so you see the first result quickly. A larger scope gets split into stages with clear deadlines.

Who owns the code once it's done?

You do. After payment we hand over the full source code, documentation, and access. Nothing ties you to us: keep developing the product with us or with any other team. After launch you can stay with us for maintenance and further development, or take everything over right away.

I'm not sure what I need yet

That's normal, most clients start without a ready specification. Describe the problem in one sentence, and we ask about the rest. We propose a scope that solves the issue, without features you don't need.

When are we not a good fit?

If you need a store on an off-the-shelf platform, a mobile app, or an engineer on staff, we say so straight on the first call and point you in a better direction. We take projects where custom software genuinely earns its keep.

Who will I be talking to?

Directly with the engineer writing your code. No account manager, no handing the project to a junior. You write, you get an answer within 48 hours. We work remotely, in the Central European time zone (CET/CEST), in Polish and English.

07Contact

Got a nagging problem? Describe it, I'll code the rest.

One sentence is enough to start. Tell me what's bothering you. Within 48 hours I come back with a clear answer: can it be done, and at what fixed price.

No obligation: describing your problem costs nothing
Free intro audit: you keep the report either way
Fixed price agreed upfront or we don't start: no surprises on the invoice
A limited number of projects at a time, each with full attention: reach out early if the deadline matters
We reply within 48 hours
Write directly
contact@tenzanlogic.com