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    4IRE Blockchain Developers

    Senior Blockchain Developer

    Elena is a BCS with a background in Android development and Computer Vision. For more than 3 years, she has been developing blockchain solutions, designing blockchain architecture, providing
    technical consultations, and leading blockchain teams. She developed projects of the various technical stack (Ethereum, Quorum, Hyperledger Fabric, R3 Corda, etc.) and complexity, including the design and development of Yellowpapers and Architecture.

    Bitcoin Ethereum Hyperladger Fabric R3 Corda Solidity
    Blockchain Architect

    Oleksandr is experienced Blockchain Arhcitect focused on backend development, blockchain, bleeding-edge tech and service architecture.
    Being passionate technology enthusiast and everaging deep expertise in Blockchain and DeFi, he creats robust and simple architecture for Substrate-based solutions. Oleksandr also develops smart contracts & custom blockchains using Parity’s ink!, Rust and Substrate.

    Java Kubernetes Rust Typescript
    Lead Blockchain Engineer

    Working in IT since 2003 and having a wide-range expertise, Eugene built more than 50 projects of different complexity in various industries. Recently focused on primarily Blockchain and DeFi projects, mentoring Solidity developers, developing and implementing architecture on Blockchain projects (vesting, yield farming, NFT, games) and implementing smart contract audits.

    AWS CSS Express.js Hardhat Java Mocha MySQL Nest.js Node.js PHP Solidity Spring Vue.js
    Solution Architect

    Valeriy is a Blockchain Solution Architect with 5+ years of experience in building complex blockchain projects and leading development teams in Blockchain, Fintech, and DeFi. Experienced Solidity Developer, skilled in PHP, Laravel, Angular and Golang, provides high-level technical advisory, participates in technical plannings, prepares technical discovery and documentation, handels developers evaluation process.

    CSS MySQL PHP Solidity
    Head of Engineering

    Yaroslav is a Head of Engineering with a unique combination of strong technical, consulting, and management skills. Leveraging 5+ years of experience in Solidity, he leads world-class blockchain dedicated development teams, prepares the architecture vision for the DeFi and FinTech projects, conducts smart contract audits. Yaroslav participated in more than 30 ICOs ERC20 tokens development, and solution development for contracts deployment to the mainnet.

    .NET C# CSS Mocha Mongo MySQL Node.js Python Solidity Truffle Web3
    Solution Architect

    Kyrylo is an experienced blockchain solution architect and Solidity developer with extensive expertise in Ethereum, Tezos, NEAR Protocol, Polkadot, Solana, Symbol, Stellar, and other blockchain platforms. Being a member of the ToIP Consortium and a winner of 3 challenges at BlockchainUA hackathons in 2018-2020, he has a track of 20+ years at C-level position in software development and telecom sectors.

    Business Analysis JavaScript Product Management Python Software Development
    Rust Developer

    Andriy is a blockchain engineer with a background in backend development, design and development of DeFi applications for the Solana blockchain and Polkadot ecosystem. The projects he has developed utilized proven tools of the respective ecosystems: Anchor framework for Solana and FRAME pallets/Open runtime Module library for Substrate Framework.

    Rust Solana Substrate
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    Want to hire blockchain engineer?

    Who we are

    4IRE has a large team of experienced blockchain engineers with domain-specific expertise in DeFi, Web3, and crypto available for outstaffing. Our blockchain engineers and architects have worked on projects based on the Ethereum, BSC, Polygon, NEAR protocol, and Solana blockchains. Thus, we can always hand-pick an expert or compile a team of pros with an appropriate tech stack to meet your human resource needs for the next blockchain project.


    Years in development & consulting


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    Graduates finished our courses

    About 4IRE

    4IRE Hiring and Engagement Model

    Full-Time Hiring

    You can hire an engineer or a blockchain development team at 4IRE to delegate the entire blockchain project to it. Our developers will deliver turnkey solutions to your project by working on it full-time and guiding you from a vague idea to full-scale practical implementation and deployment. 

    Part-Time Hiring

    You may engage our developers on a part-time basis to cover the tech stack gaps in your in-house team or close challenging tasks on your project. The assigned developers won’t work exclusively on your project but will manage the assigned task with professionalism and dedication. 

    Time & Material

    No need to pay the full monthly salary for each engineer you get on board your project. You can only cover the hours of work they complete on your project. This model offers unrivaled flexibility and helps you address minor dev issues quickly and affordably.  

    Dedicated development team

    At 4IRE, you can also hire a dedicated team with a full blockchain design, development, and integration stack. We will create a team based on your project needs and technical specifications to delegate the entire blockchain project or its part to an autonomously working unit focusing on your task only. You receive a ready-made blockchain team without the hiring and accommodation hassle in-house.

    Official integrators of NEAR Protocol

    Our 4IRE is a blockchain development company with extensive experience in migrating projects to NEAR – a next-generation layer 1 protocol for independent powering of the emerging Open Web. Offering scalability and low costs of operation, NEAR is a real competitor in the world of blockchain. Due to its sharded nature, it presents significant advantages in terms of smart contracts performance and payment processing compared to Ethereum 2.0. We are official NEAR integrators and our deep expertise is what you need if you consider moving to NEAR blockchain.

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    Our Blockchain Development Services

    4IRE is a Swedish-Ukrainian software development outsourcing provider with 14 years of experience and numerous cases on the DeFi and Fintech markets. We deliver exceptional results on every project with the cutting-edge tech expertise of our team bringing innovative blockchain solutions for each client. 

    How to start hiring

    Requirements Gathering

    We discuss the project with the client to identify its technical requirements and technology needs. At this stage, we can verify the availability of needed tech expertise and make preliminary estimates of work hours based on the general project idea and your expectations. 

    Research and Planning

    The next stage involves more detailed market and technology research on your project to plan the breakdown of costs and human resources needed for your project’s implementation. It’s a more concrete step that ends with budget and deadline roadmap planning. 

    Development Stage

    If you’re okay with our provided estimates, it’s time to compile a team and get down to the actual coding. We offer candidates, you approve the final team composition, and the dedicated team works under our close guidance to deliver the project to you. 

    Testing Phase

    Once the dev work is over, we undertake extensive QA testing of the resulting product. Our experts run a series of automated and manual checks, review the code logic, and analyze the code’s cybersecurity before the final project submission. 

    Discover our Partners

    4IRE is proud to be part of numerous successful tech projects in the sectors spanning wide across the blockchain application spheres. Our innovative solutions are applied in numerous spheres, from banking to real estate, gaming, and DeFi. Here are a couple of our success stories showcasing our expert contribution to the business success of our clients launching top-tier apps and products in the blockchain market.

    Member of Substrate Delivery Partners Program
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    Official NEAR protocol integrator
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    What our clients say

    4IRE is a blockchain development company with extensive experience in migrating projects to NEAR – a next-generation layer 1 protocol for independent powering of the emerging Open Web.

    Our Awards and Recognition

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    Will I get a project estimation before starting the work?

    If you need the whole project’s estimation or wish to calculate the costs and deadlines for only a part of it, our team can prepare a highly detailed breakdown for your review within 4-5 business days. 

    What is 4IRE? Is this a freelance platform like Upwork?

    No, we have a business model different from Upwork. 4IRE is a software development company with in-house dev resources and a distributed partnership network of remote developers. Every expert included in our team has passed thorough competency screening, so 4IRE can guarantee the expertise and relevant experience level of every specialist you hire here. 

    What is the difference between 4IRE and freelance platforms?

    4IRE uses only in-house development resources and a partnership network of tried and tested candidates. Freelancers can’t join 4IRE without a thorough screening procedure conducted by our experienced recruiters with in-depth tech expertise. 

    What blockchains do you work with?

    Our blockchain developers can help you with projects on any EVM-compatible blockchain, such as Polygon, BSC, Tron, and the like. We also have blockchain experts with extensive NEAR, Solana, Polkadot, and Substrate expertise. 

    What technologies do you work with?

    Our team can provide blockchain development services using Node.js, React.js, and related programming frameworks.

    Do your developers speak good English?

    Yes, we hire only developers proficient in English to cater to our international clientele without significant communication barriers. The lowest level of English proficiency in our team is intermediate.

    Can I see the blockchain developer's CV?

    Yes, 4IRE recruiters can provide the candidates’ CVs for your review and feedback after we understand your project needs and hand-pick relevant talent from our database.

    Where are your blockchain developers located?

    Most of our development team is currently located in Ukraine. We also have a broad network of remote developers living in different European countries.

    Is it safe to work with you since you are located in Ukraine?

    Yes, working with our Ukraine-based team is totally safe as all engineers have been relocated to safe territories and work in a fully equipped environment to deliver projects in line with the negotiated deadlines.

    How do I start?

    Don’t hesitate to contact our managers and inform us about your project details. The more detailed your request is, the easier it will be for us to analyze the technical requirements of your blockchain project and provide relevant candidacies for your dedicated dev team.