Best Back End Developer Freelancers for Hire

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We found 2,220 Back End Developer Freelancers for Hire. Post a job for free and hire a freelancer with the skills and reputation to get your task completed.

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George Edward

Fullstack Software Developer 
Average Review
24 reviews
Reputation 
444
30 jobs completed

Skills

About me

I'm a professional software developer in Blockchain/Web/Mobile/Desktop development and an exceptional designer proficient in design across multiple platforms including websites, iOS applications, Android applications, web apps, and desktop apps. Skills: - HTML/HTML5/CSS/CSS3/JavaScript/SASS/LESS/jQuery - PHP/Python/Ruby/Laravel/MySQL/Node.js/AngularJS/AJAX - Photoshop/Illustrator - Java/C++/C#/C/.NET/GO - Swift/Android SDK - React/Ionic Portfolio: - https://ninjapromo.io - https://www.divrsionarcade.com - https://forsage.io - https://au.mbt.com - http://npw.live - https://p2pb2b.io - https://www.cryptorocket.com - https://playnumbersgame.com - https://www.anonymixx.com - https://blender.io - https://livetrades.com -https://coinverify.com - https://vaquitatoken.net Let's discuss. Thank you. Email: senior.coder007@gmail.com Jabber: cddev2018@jabber.calyxinstitute.org Telegram: @SeniorCoder Discord: seniorcoder#2701 Skype: live:concept_developer

Rate

70 USD/hour
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Bozo Yasuo

bachelor of computer engineering 
Average Review
15 reviews
Reputation 
323
18 jobs completed

Skills

About me

Hi, All. How are you? This is Bozo Yasuo living in Japan, BC developer with 6+ years of expirience. I've github 70+ private repos regarding BlockChain dev such as fastswap, croxswap, formation project... If you want, I will share my repos via interview. My working style: - Dedicated effort with full-time - Always can work in your time zone. - Comply with the deadline. - Perfect satisfaction with your project. - Best result with high quality and high speed. I am a strategic engineer with a strong interest in the Cryptocurrency Ecosystem. As a talented crypto dev, I am able to work with your team in long-term. Thx.

Rate

40 USD/hour
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Kaishi Yoshinari

Full stack Web and Blockchain Developer USA, Austin
Average Review
9 reviews
Reputation 
218
10 jobs completed

Skills

About me

Web developer focussed on Blockchain and Crypto-related projects, Crypto Gambling and Betting platforms, Trading Platforms and Exchanges, crypto lending and payment solutions. Last 5 years I have worked on several successful DeFi projects. Solutions I provide: ✔ DEX and Centralized Crypto Exchange ✔ Advanced Trading Platform (Stocks, CFD, Forex, Option, Features...) ✔ Portfolio Tracking Platform ✔ Multichain Web and Mobile Wallet ✔ Crypto Betting and Casino ✔ Yield Farming Protocols ✔ Liquidity Mining Protocols ✔ Automated Market Making (AMM) protocols ✔ NFT ✔ Impermanent loss, governance tokens ✔ P2P/Pool Lending and Borrowing ✔ Crypto Collectible Platforms and Non-Fungible Tokens ✔ Custom dApps ✔ ERC20, ERC777, ERC223, ERC721, ERC1155 Smart Contract Development ✔ DeFi development: Uniswap, Compound, Mooniswap, Sushi Swap, WBTC, Binance Launchpool, NFT, BakerySwap, Pancake Swap. Web Stack: ✔ Web3.js, Ethereum, Solidity, Truffle ✔ JavaScript/ Typescript, React.js, Node.js

Rate

50 USD/hour
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Mihail Z. Dodos

senior developer 
Average Review
10 reviews
Reputation 
198
10 jobs completed

Skills

About me

Blockchain and Full Stack developer Greetings! Thank you for visiting my profile! As a senior Blockchain and Full Stack developer, I have good experience in these fields for over 7 years. I will delivery perfect result on time. ✔ Blockchain stack Solidity, Truffle, OpenZeppelin, Hardhat, Remix, Web3 ✔ Platfoms Ethereum, Binance Smart Chain (BSC), Polygon (Matic), Fantom, and etc ✔ Smart Contract Development BEP20, ERC20, TRC20, ERC777, ERC223, ERC721, ERC1155 ✔ DeFi Clone Pankcakeswap, Sushiswap, Pantherswap, Moonswap, Quickswap and more ✔ DEX and Centralized Crypto Exchange ✔ Yield Farming & Liquidity Mining Protocols ✔ Crypto Collectible Platforms and Non-Fungible Tokens ✔ ICO, STO, Blockchain Copyrighting and Whitepapers ✔ Impermanent loss, governance tokens, deflation token ✔ React, Vue, TypeScript, JavaScript, Bootstrap ✔ PHP, Node, Django, Flask, Restful API, Python ✔ MySQL, Sqlite, MongoDB, PostgreSQL

Rate

80 USD/hour
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Jemen Ri

smart contract,dapp developer with solidity,Rust,react, 
Average Review
5 reviews
Reputation 
124
5 jobs completed

Skills

About me

I am a Blockchain and Full stack developer. When I work on a project, I strive for excellence and 100% client satisfaction. Having an idea is easy, but being able to turn that idea into a reality is the tougher challenge. You have the idea ready, as well as detailed spec and graphics and etc, but the final missing piece of your app is to bring all of these together with programming. That missing piece is my specialty. With your design requirements and idea, I write the code to combine it all into a fully functioning. Blockchain ✔ Ethereum DApps development - smart contract, web3, metamask integration ✔ DeFi development: forking Uniswap, Pancake Swap, Sushi Swap ✔ Build and Deploy a Solana Smart Contract ✔ DEX and Centralized Crypto Exchange ✔ Web/Mobile Wallet ✔ Custom dApps ✔ ICO, STO, Blockchain Copyrighting and Whitepapers Full Stack ✔️ React, React-Redux, React Router, Redux-Saga, Next.js… ✔️Vue, Vuex, Boostrap Vue.. ✔️Django,Laravel,Node js

Rate

50 USD/hour
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bot dev

Average Review
4 reviews
Reputation 
104
4 jobs completed

Skills

About me

For over 5years I have been working as a backend developer and have solid and extensive experience in the design and development of enterprise and fintech systems. I've developed a backend for exchanges, auction platforms, gambling systems, marketplaces, and a couple of arbitrage and market maker bots. The Blockchain space has become very interesting for me, and for the last 3 years, I've worked mainly on Blockchain-related projects. I've made many integrations for such blockchains as Bitcoin, Ethereum, Tron, Polkadot, Solana, and many others, including a fully custom blockchain. On top of my experience, I've worked on NFTs, DeFi paltforms, cross-chain and token exchanges, wallets, oracles, crypto casinos. - Blockchain integration development: Bitcoin, Ethereum, Polkadot, Binance Coin, Tron, Uniswap and others, Crypto vaults, Liquidity providers, Trading bots - Smart-contract integration development: DeFi platform development Contact me to get any kind of bot

Rate

30 USD/hour
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Isreal U

Full Stack Developer and Writer 
Average Review
5 reviews
Reputation 
100
6 jobs completed

Skills

About me

Full stack web3 developer experienced in Ethereum, Solidity, Cairo, Web3.js, etc. Can build you crosschain web applications such as Flash Bot, NFT minting website/marketplace, DEX like UniSwap, PancakeSwap, DAO, your own token/coin (ER-20, ERC-721, or ERC-1155) on Ethereum, BSC, Polygon, Solana, etc. Smart contract monitoring and auditing. I'm super excited, can't waiting to hear about your custom web3 project?

Rate

30 USD/hour
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Oliver Noah

Blockchain, Cryptocurrency, Coin, ICO, Mobile App, Coin/Token Audit 
Average Review
3 reviews
Reputation 
85
4 jobs completed

Skills

About me

I am a software developer from Tanzania, having 7+ years of experience. I am founder and CTO of MTech system in which I'm having a branch in India. There are more than 40+ developers in my team who is always ready to deliver every challenging task. I have a knack for developing new applications and websites using the latest technologies . Skills : PHP | Android | iOS | C / C++ | Swift | HTML5 | CSS 3 | JavaScript | React.js | Angular.JS | Jquery | PHP | Node.Js | Socket.io | Mysql | MongoDB | Laravel | Codeigniter | Yii | Wordpress | Magento | Opencart | Elastic Search | Apache Hadoop | Apache Ant | Radis | Docker | Kubernetes | Svn / Git | Flash / Flex | Adobe Air | AS3 | Flutter. Services and Solutions : B2B Apps | B2C Apps | Repair - Upgrade - Maintain Apps | Data Analysis | Data Sharding | Automation | Telegram BOT | Quality Management | Strategic Digital Marketing | iWatch Apps | DevOps | Amazon Web Services | Third-party Payment Gateway more. Inbox me now.

Rate

50 USD/hour
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Kelvin Fundi

Software Developer 
Average Review
2 reviews
Reputation 
69
2 jobs completed

Skills

About me

I am a senior software developer with 5+ years of experience. I have helped clients to empower their innovative ideas by building optimal software solutions to meet their business needs. I help individuals, startups, and enterprise customers to fulfill their technical exigencies by developing web applications. As a web developer, I am skilled in JavaScript, Node Js, Typescript, Next Js, Nest js, React, Docker, Figma, And AWS. I can also create WordPress websites by designing custom WordPress themes. Database: SQL, MySQL, MongoDB, DynamoDB, Firebase, PostgreSQL Teamwork with Git(GitHub, Jira, Bitbucket), Slack, and Trello This set of skills enables me to cover a wide range of projects. Whether you are on a budget or you simply want the latest technologies to be used in your project, I believe we can find a solution that is tailored to your need.

Rate

15 USD/hour
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Adan Cui

Senior Blockchain Engineer USA, Miami
Average Review
2 reviews
Reputation 
63
1 job completed

Skills

About me

I am an experienced & talented & enthusiast developer interested in building usable, useful, well-constructed Blockchain & NFT projects. Proficient at performing well as working in a group or independently in a fast- paced setting. Deep understanding of distributed ledger, blockchain safety, blockchain design principles, and various blockchain protocols and environments. I am interested in continuation of learning and cooperation with excellent people.

Rate

50 USD/hour
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John United States

Full-time Freelancer 
Average Review
1 review
Reputation 
54
1 job completed

Skills

About me

John has a broad skill set in Full-Stack JavaScript development. He has 10 years of experience in development using React.js, Vue.js, Web design, Node.js, Express.js and etc. He has a unique ability of understanding and translating business requirements into development roadmaps.

Rate

40 USD/hour
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Best_ Companyy

DESIGNER/DEVELOPER Belgium, Bruges
Average Review
5 reviews
Reputation 
53
4 jobs completed

Skills

About me

We are the team of GRAPHI DESIGNER AND DEVELOPER and we have different years of experienced in programming and designing Aspect, And we can handle different type of work such as: NFT MINT WEBSITE, 3D NFT ART COLLECTION, CHARACTER MODELLING, 2D NFT ART COLLECTION, PANCAKE SWAP, and many more and we can use different format/programming language to develop your project and NFTS such as: crystal, JavaScript, c++, java, blender, Maya, Autodesk, UI,UX, Daz_studio and so on depends on your features for each project. kindly inbox us now lets discuss more details about your project. THANKS

Rate

250 USD/hour
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Lev Wang

Hong Kong, Hong Kong
Average Review
1 review
Reputation 
51
1 job completed

Skills

About me

Hello, welcome to visit my profile! I am an experienced Web Developer adept in all stages of advanced web development and a super Blockchain/Web3JS, Solidity expert equipped with a diverse and promising skill-set. Blockchain Experiences: ⭐ Developing Smart Contract using Solidity/Rust ⭐ Presale, ICO/IDO sites ⭐ NFT projects(minting, staking, marketplace and p2e game) ⭐ Defi and DEX(uniswap/pancakeswap fork) ⭐ OlmpusDAO fork ⭐ Crypto Play to Earn game, Breeding and Fight game ⭐ Auto trading Bot / Snipping Bot(Front-run, Arbitrage) Web Experiences: ⭐ Node JS, Nest JS, React JS, Next JS, Vue JS ⭐ PHP, Laravel, Wordpress, Shopify ⭐ MySQL, MongoDB ⭐ HTML, CSS, UX/UI I would like to get a good friendship throughout honest and hard working. If you have urgently problems, contact me please. Thanks.

Rate

50 USD/hour
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Radenko Popadic

I am a Blockchain Developer 
Average Review
2 reviews
Reputation 
50
2 jobs completed

Skills

About me

I am a passionate and creative developer. (https://www.freelancer.com/u/danijelb2005) I have been developed many websites by using React, Laravel and Blockchain. I can build or customize any themes and plugins required, fix any critical problems immediately. As a full-time freelancer, I can meet deadlines, maintain quality, and work on your time zone. ***My Skills and Experiences:*** -- Blockchain: For at least 3+ years including Bitcoin and Ethereum(Javascript, TypeScript) -- POS System that contains website, mobile app, and cryptocurrency. -- Blockchain protocol update BIP47 -- Smart contract development using solidity --Development Defi Dapp including yield farming --Fork Project Pancakeswap and sushiswap on Ethereum and Binance Smart Chain --Build NFT token and make website like opensea --Upgrade from V1 to V2 on pancakeswap --Build Snipper Bot, Arbitrage Bot on Binance Smart Chain Those are my contact info. @sblockchaind, live:.cid.6f4ac54533c89f00

Rate

100 USD/hour
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Cube10 io

Average Review
2 reviews
Reputation 
49
3 jobs completed

Skills

About me

Our strongest asset at Cube10 is our valued team of specialists. Our world-class management team with years of experience at reputable multinational companies is well acquainted with what it takes to implement solutions to create success stories for you. We are a team of talented developers, data engineers, and business specialists from the emerging markets of West Asia and Eastern Europe who enjoys creating digital solutions for your complex problems. Well experienced in providing world-class services, we delight our growing family of customers in Europe, North America, and Asia by focusing on efficient teamwork, transparency, commitment, and professionalism.

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