Blockchain Development Services in Ukraine

Blockchain development at Marketing MIX covers smart contracts on Ethereum and EVM networks, dApps with wallet login, TON projects and Telegram Mini Apps, plus the website and marketing a crypto project needs to reach users.

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In short

We start with business requirements: what the blockchain solves, which network fits and what is stored on-chain.
Stack: Solidity for Ethereum and EVM-compatible networks, TON for Telegram, React with ethers.js for the front end.
A landing page for a token or DeFi project takes up to 3 working days; dApps and contract systems are scheduled after the specification.
Contracts go through tests on a testnet and an external audit before mainnet when funds are at stake.
SEO, content and social media for the project come from the same team.

What we build

Smart contracts. Tokens on ERC-20, NFT collections on ERC-721 and ERC-1155, vesting, staking and payment contracts in Solidity.
dApps. Web interfaces with wallet connection (MetaMask, WalletConnect), transaction status and user dashboards.
TON and Telegram. Telegram Mini Apps and bots with TON Connect for payments. See mini-apps for crypto companies.
Crypto project websites. Landing pages, corporate sites and documentation portals. See landing pages for crypto companies.
Integrations. Crypto payment gateways, exchange APIs and on-chain data in your existing site or CRM.
Analytics. GA4 and Google Tag Manager events for wallet connection and completed transactions.
Promotion. SEO, content and SMM for crypto projects within Google and Meta advertising rules for crypto.

Smart contract code on a developer laptop

Do you actually need a blockchain?

A blockchain makes sense when several parties need a shared record that no single party controls, when users hold their own assets, or when payments must settle without a bank. For an internal database, a loyalty scheme run by one company or a catalogue, a regular back end costs less and ships faster. We say this at the requirements stage, before any contract is written.

How blockchain development goes

Requirements. Business logic, users, network choice and what goes on-chain.
Architecture. Contracts, back end, front end and wallet flows.
Development. Contracts, dApp interface and integrations.
Testnet and audit. Tests, fixes and external audit if funds are at stake.
Mainnet launch. Deployment, monitoring and user documentation.

Blockchain Development process: requirements, architecture, development, testnet and audit, mainnet launch — How blockchain development goes

How long does blockchain development take?

In our experience a landing page for a token or DeFi project is usually ready within 3 working days after the brief and materials are agreed. A Telegram Mini App MVP usually takes up to 15 working days.

Smart contract systems, dApps and exchange integrations are scheduled after the technical specification, since the term depends on the number of contracts, the business logic and the external audit queue.

What affects the cost

We quote after the requirements review. The price depends on:

number and complexity of smart contracts;
networks: Ethereum, EVM chains, TON;
dApp interface and back-end scope;
integrations with wallets, exchanges and payment gateways;
external security audit.

What we need from you

A description of the product and the role of the blockchain in it.
Tokenomics or payment logic, if already drafted.
Legal position on the token in your target markets from your lawyer.
Access to wallets and accounts for deployment, or consent to create them.

What you get

At handover you receive:

source code of contracts and apps in your repository;
contract addresses and verification on the block explorer;
test reports and audit results;
analytics for wallet connections and transactions.

Why a contracted team

Errors in a deployed contract are expensive, because contract code cannot be quietly patched:

unchecked access rights that let an attacker withdraw funds;
a contract deployed without testnet runs;
crypto ads rejected because the landing page breaks Google or Meta rules;
a project website that nobody can find in search.

Working with a Kyiv team remotely

We work remotely with companies in the UK, the EU and North America: video calls, email, Telegram or WhatsApp, and shared documents for plans and reports. Kyiv is on UTC+2 (UTC+3 in summer), so our working day covers most of the UK and EU business day and the morning on the US East Coast. You get one project manager who is responsible for the timeline.

Why clients trust us

More than 10 years in digital. Marketing MIX has been building websites and running marketing for over a decade, with the portfolio to show for it.
Clients outside Ukraine. Our portfolio includes projects for KidSup and Cookiddoo in Canada and MBSoy, an architectural studio in Finland.
One team for the whole chain. Strategy, website, SEO, ads and analytics sit with one team, so nothing gets lost between contractors.
A registered, verifiable company. Our DUNS number is 68-606-2061 and our NCAGE code is A3G3J; both can be checked in the Dun & Bradstreet and NATO NCAGE databases.
A real office in Kyiv. The studio is at 77 Velyka Vasylkivska St., Kyiv, and works remotely with clients in Ukraine and abroad.