Custom software studio

Custom software for European businesses. Whatever your business runs on, it can be built, connected to what you already have, or replaced. Nine real products below, each a live demo on sample data.

Products built
9
Years in production
3+
Hosted in Frankfurt
EU

Mirelli Studio — Custom software studio

Selected work

Real systems for logistics, hospitality, trading and marketplaces. Every demo runs live with sample data in place of client data: click through it yourself.

DizelTrade — Distribution management
RentoWorld — Car rental marketplace
TradingLearn — Trading education
Shipter — Launch planning for indie products
Stockroom — Procurement & price control
CaspianFlow — Energy marketplace
RestOS — Restaurant operations
RestOS HR — Staff onboarding & HR
BotFactory — Telegram bot builder
  1. DizelTrade

    Distribution management, 2025

    Internal platform for diesel fuel distribution: truck fleet, client debts, delivery dispatches and financial analytics with role-based access control.

    FastAPI, PostgreSQL, JavaScript, Python

    Open the demo — DizelTradeRead the case study — DizelTrade
  2. RentoWorld

    Car rental marketplace, 2025

    Online platform for browsing and booking rental cars. Clean catalogue, booking flow, availability calendar and a simple admin panel for the fleet.

    HTML, JavaScript, CSS

    Open the demo — RentoWorldRead the case study — RentoWorld
  3. TradingLearn

    Trading education, 2026

    Interactive platform to learn trading from scratch. Structured courses, quizzes and a live simulator where users practise with virtual capital.

    Next.js, FastAPI, PostgreSQL, TypeScript

    Open the demo — TradingLearnRead the case study — TradingLearn
  4. Shipter

    Launch planning for indie products, 2025

    AI-assisted launch planner for indie founders. Describe your audience, get a week-by-week distribution plan across Product Hunt, Reddit, LinkedIn and newsletters, and tick tasks off on a launch board.

    Python, HTML, FastAPI

    Open the demo — ShipterRead the case study — Shipter
  5. Stockroom

    Procurement & price control, 2026

    Multi-entity warehouse system for restaurant chains. Inventory, purchase orders, supplier management and automated price verification across venues.

    React, TypeScript, Tailwind, Vite

    Open the demo — StockroomRead the case study — Stockroom
  6. CaspianFlow

    Energy marketplace, 2025

    B2B fuel trading platform for European terminals from Rotterdam to Trieste. Live price reference, P2P marketplace for diesel, gasoline and jet fuel, delivery-cost calculator and Stripe payments.

    Python, FastAPI, JavaScript, Stripe

    Open the demo — CaspianFlowRead the case study — CaspianFlow
  7. RestOS

    Restaurant operations, 2026

    Restaurant operating system: live order board with kitchen view, menu and guest management, staff scheduling, loyalty points and multi-venue analytics.

    FastAPI, HTMX, PostgreSQL, Python

    Open the demo — RestOSRead the case study — RestOS
  8. RestOS HR

    Staff onboarding & HR, 2026

    PWA-based HR platform for restaurant staff. Gamified onboarding with XP and certificates, AI-assisted group chat and daily shift checklists.

    FastAPI, Python, SQLite, PWA

    Open the demo — RestOS HRRead the case study — RestOS HR
  9. BotFactory

    Telegram bot builder, 2026

    Visual block-based Telegram bot constructor delivered as a Mini App. Drag welcome messages, buttons and delivery blocks, then publish a live bot in minutes.

    React, TypeScript, FastAPI, Telegram

    Open the demo — BotFactoryRead the case study — BotFactory

Services

From the first scoping call to a deployed, documented product.

How a project runs

Four steps, no surprises.

  1. Discovery

    Goals, users, scope and a clear estimate are agreed in writing before any code is written.

  2. Design

    Clickable prototypes and a design system, reviewed with you early while changes are still cheap.

  3. Build

    Working software on a staging URL every week. You see the product grow, not status reports.

  4. Launch & support

    Deployment, monitoring, documentation and a handover that leaves you in control of your product.

Questions, answered

What does Mirelli Studio do?

Mirelli Studio designs and builds custom software for businesses in Europe: ERP systems and internal tools, SaaS platforms, B2B marketplaces, restaurant and logistics software, and Telegram bots and Mini Apps. Every project goes from the first call to a deployed, documented product.

What kinds of products have you built?

Nine real products, each with a live demo on sample data: a fuel-distribution ERP, a B2B fuel trading marketplace, a restaurant operating system, restaurant inventory and purchasing, an employee onboarding app, a peer-to-peer car rental marketplace, a trading education platform with a simulator, an AI launch planner and a Telegram bot builder.

Which technologies do you use?

TypeScript, React and Next.js on the front end; Python with FastAPI, Node.js and PostgreSQL on the back end; Redis, Docker and Linux for infrastructure; Stripe for payments and the Telegram Bot API for bots. The choice follows the project, not the other way round.

Can you build a Telegram bot or Mini App?

Yes. BotFactory, one of the nine products, is a visual Telegram bot builder delivered as a Mini App, with payments, a sales funnel and a buyers dashboard. Bots for sales, support, courses and communities are a core service.

How does a project run?

Four steps: discovery with a written scope and estimate, design with clickable prototypes, build with working software on a staging URL every week, then launch and support with monitoring and documentation. You see the product grow instead of reading status reports.

Where is the software hosted and how is data handled?

This site and its demos run on infrastructure in Frankfurt and use no cookies, analytics or third-party requests. For client projects, systems can be deployed on the EU cloud infrastructure of your choice and designed around data minimisation, with documentation so you are never locked in.

How much does a project cost?

It depends on scope; projects start from €500. After a short discovery call you receive a written estimate with a fixed scope, so you know what you get and what it costs before anything is built.

What kinds of systems can you build or work with?

ERP and internal tools, SaaS platforms, marketplaces, customer portals, mobile-first apps and PWAs, Telegram bots and Mini Apps, payment and API integrations, and automation around the systems you already run. If a business process runs on software, Mirelli Studio can build it, connect it to your existing tools, or replace it. If something is outside the studio's strengths, you will hear so before you spend anything.

Do clients come back?

Yes. Clients are happy with what they get and come back with new projects.

Which languages do you work in?

English and Russian. This site is available in English, Russian, German and French.

TypeScript, React, Next.js, Node.js, Python, FastAPI, PostgreSQL, Redis, Docker, Stripe, Telegram, Tailwind

Have a project in mind?

Describe what you want to build, connect or replace. Every message gets a personal reply with concrete next steps.

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