Best Back End freelancers for Hire

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We found 228 Back End 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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Andrey Vasilev

Full stack Web and Blockchain Developer Russian Federation, Vladivosdok
Average review
6 reviews
Reputation 
158
7 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

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50 USD/hour
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Zoran Mitrović

senior developer Serbia, Belgrade
Average review
6 reviews
Reputation 
151
6 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

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30 USD/hour
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Phenomenon Studio

UI/UX Design & Development Services Ukraine
Average review
2 reviews
Reputation 
47
2 jobs completed

Skills

About me

Full-service studio for startups and established companies. Our main areas of activity: ● Web and mobile applications design ● Websites design ● 2D/3D Illustrations ● Logo & Branding ● Development I welcome you to look at our studio's portfolio:
 Dribbble: https://dribbble.com/phenomenonstudio 
Behance: https://www.behance.net/phenomenon-studio

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50 USD/hour
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song il

React, Smart Contract, Flutter China, Wenzhou
Average review
1 review
Reputation 
42
1 job completed

Skills

About me

I am a full stack web and mobile app developer with 6 years of experience. Also I can handle block chain network technology freely. If somebody need my assistance, I will assist him or her with my efforts and brain perfectly. Thank you for your creative idea! Warm regards. Song.

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40 USD/hour
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David Jin

Blockchain and Full stack developer China, Shenyang
Average review
0 reviews
Reputation 
37
0 jobs completed

Skills

About me

I am a senior blockchain and full stack developer. I have 7+ years experience in development mobile apps and websites and 2 years experience in blockchain part. My development goal is 100% satisfaction of clients. Promise, I will deliver you my best result and make you happy. These are my major fields. Enjoy watching. :) -MERN, MEAN, MEVN, AWS, Azure, GIT, Bitbucket -Laravel, Codeigniter -Django, Python, GraphQL, REST api - Mongo, Mysql, Firebase - React Native, Flutter, Swift, .NET, ASP.NET, Xamarin. - Joomla, Wordpress, Drupal, Shopify, Magento - Blockchain, Bitcoin, solidity, Ethereum, NFT, Defi, Wallet. - Data Scraping, Data Processing, AI. - Trading, Marketing, Ecommerce, Affilate - nSEO stuffs, Optimize Site Also, I have services for you. 1.10 hrs / 7 days working 2.Communicate Everyday 3.Time set to your local 4.1 month tech support after complete 5.On time delivery I really hope to see you. Sincerely, David.

Rate

40 USD/hour
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Lee Min

Blockchain | Web(三).js | React.js | React-Native Developer China, Shenyang
Average review
0 reviews
Reputation 
35
0 jobs completed

Skills

About me

I am a senior full-stack developer with 6 years of experience in PHP(Laravel), JavaScript(React, Vue, Angular, Next, Nuxt, Node, Express), TypeScript, Python(Django, Flask) for web development and React-Native for mobile app(Android/iOS) development. Also I have deep experience in web3.js, connecting wallets on website. I have and integrated with tons of React Frontend website with Smart Contract. Please feel free to contact me if you want to get perfect result in deadline. I am here for your business ! ! !

Rate

25 USD/hour
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kelvin fundi

Software Developer Kenya, Nairobi
Average review
1 review
Reputation 
32
1 job completed

Skills

About me

I am a senior full-stack 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 full-stack web developer, I am skilled in HTML5, CSS, Bootstrap, JavaScript, PHP, Ruby and Rails, Laravel, Vue and React. 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.

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15 USD/hour
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yichong li

Solidity & Dapp & Game developer China, ShenYang, Liaoning, China
Average review
0 reviews
Reputation 
31
0 jobs completed

Skills

About me

I'm a talented solidity & dapp & Game developer. I am passionate about new-age technology. I care about most things that express value and uniqueness and smart contract development is one of them. My curiosity and enthusiasm fuel me to learn and try new things, allowing me to keep up to date in technology. And I look forward to working in challenging environments. Main skiils: smart contract development(DeFi, NFT), Dapp(web3.js, React), python, C++, Rust, opencv

Rate

50 USD/hour
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Mrinal Sharma

Blockchain Architect India, Pune
Average review
0 reviews
Reputation 
30
0 jobs completed

Skills

About me

I am representing Blockchainerz Technologies which is a subsidiary of Cyperts Digital Solutions Pvt Ltd, we are one of the premium blockchain consulting firms with experience of 7+ years in blockchain-related services and successfully completed over 50 + blockchain applications. We also have extensive experience in website and mobile application development. Blockchain Related Development - Custom Private Cryptocurrency Development - ICO launching (ERC20 / BEP20) - Custom Smart Contract & PoC - Cryptocurrency Exchangers (Centralised & Decentralised) - Cryptocurrency Single & Multi Wallets - Peer to Peer Marketplace - Peer to Peer Insurance - Peer to Peer Realstate - NFT - DApps - UniSwap & PancakeSwap projects Technologies that we work on:- - Ethereum - Solidity - Web3js - Smart Contract - Viper - GoLang - C++ - Rust - NodeJS - ReactJs - MEAN Stack - Python - PHP

Rate

40 USD/hour
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Georgy Alaverdyan

UX/UI Designer and No-Code Developer 
Average review
0 reviews
Reputation 
29
0 jobs completed

Skills

About me

I’m a UX/UI designer and no-code developer who loves creating dazzling stories and engaging experiences for businesses and individuals. I design and develop websites, mobile, and web apps by using no-code tools such as Webflow, Squarespace, Bubble, Zapier, Integromat, and many more. Also, I write no BS copy that is useful for clients and provide results for the client. I can translate the UI to Russian or Chinese if a client wishes so. Let’s shape better business solutions!

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30 USD/hour
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Shen Gang

Blockchain | Web-Three.js | Dapp | Smart Contract | Solidity | React.js | Node.js China, Shenyang
Average review
0 reviews
Reputation 
28
0 jobs completed

Skills

About me

I have worked as a Full Stack Developer and are working in blockchain projects now. I can build Dapp & Smart Contract and in React.js, Solidity, Web3.js Professional Skills - Blockchain, Web3.js, Dapp, Smart Contact, Solidity - PHP, Laravel, Codeigniter - Javascript, Typescript, Node.js, Angular, React.js, Vue.js - Flutter In Dapp & Smart Contract Development side: - Build frontend in React.js and Integrate smart contract with web3.js - Familiar with ERC20, ERC721, ERC1155, BEP20 token on Ethereum and BSC. - Familiar with Solana smart contract development, deploy using Rust and Anchor framework and integrate with React. - Good experience in compound protocol, AMM, CPMM, Flash Loan, Staking, Farming, Uniswap, Pancake swap. - Have the way with truffle, openzeppelin-cli, hardhat. I enjoy meeting new people and hearing new perspectives. Reach out if you want to talk to me about creating new web-based projects, emerging tech or anything you would like to chat about.

Rate

40 USD/hour
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Kellys Barrios

FullStack developer Panama, Panama
Average review
0 reviews
Reputation 
26
0 jobs completed

Skills

About me

Hello There - Hope your business doing well in this pandemic! #A little about myself and us, I'm Kelly Barrios a Freelance Information & Design Technology(IT) Consultant with more than 5 years of professional experience in website and mobile application development. Either you are looking for an individual or a team to work on your enterprise-level project _ I have got you. I can provide you fixed price costs for the project or also work as a virtual full-time employee for you if you require a full-time team for your project. # Technology Stack: ➡ Mobile App Developer ➡ Back-end Developer: ➡ Front-End Developer: ➡ Project Management: ➡ Databases & Servers: ➡ Communication Channel and bots: ➡ eCommerce and CMS Developer: ➡ UI/UX Designer ➡ Payment Gateways(PayPal, Stripe, Google Pay, Apple Pay, In-App purchases)

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15 USD/hour
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Cheng Gong

Full stack Web and Blockchain Developer, AI/ML engineer China, Shenyang
Average review
0 reviews
Reputation 
26
0 jobs completed

Skills

About me

I'm a Blockchain/AI/ML developer with more than 3 and 7 years of great experience in both fields respectively. ⭐️⭐️Solutions I provide with Blockchain: ✔ ERC20, ERC721, ERC1155 Smart Contract Development ✔ DeFi development: Uniswap, Pancake Swap, Sushi Swap, Mooniswap, BakerySwap, Compound,WBTC, Binance Launchpool ✔ DEX and Centralized Crypto Exchange ✔ Multichain Web and Mobile Wallet ✔ Crypto Betting and Casino ✔ Yield Farming Protocols ✔ Liquidity Mining Protocols ✔ NFT ✔ Custom Apps ⭐️⭐️Services I Offer with AI/ML: • Face recognition and verification system • OCR • Auto background removal by using ML • ALPR • Object detection, recognition and tracking • Data analysis and prediction application • Image segmentation, classification ⭐️⭐️My Skills: ✔ Web3.js, Ethereum, Solidity, Truffle ✔ JavaScript/ Typescript, React.js, Node.js, Django, Flask ✔ Python, Java, Kotlin, Swift, C++, C# ✔ Tensorflow, Pytorch, Keras, Scikit-learn, Numpy, Pandas, etc. ✔ AWS, GCP, Azure

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50 USD/hour
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David C.

Full Stack Game Developer Denmark, Copenhagen
Average review
0 reviews
Reputation 
26
0 jobs completed

Skills

About me

With more than 13 years experience in game and IT development, we are ready to give your businesses high quality IT Services, Blockchain games, games and software developed with advanced and latest technologies. We are looking for and capable of professional projects below: - 2D & 3D game design and development (Unity) - Blockchain game design and development (Unity) - Smart Contracts development (Solidity) - Mobile Applications (Android studio / Flutter / React native) - Database Design - Server Clustering - back-end development (golang / python / C# ASP.net core / node js / Laravel) - front-end development (HTML / HTML5 / CSS / CSS3 / Sass /Bootstrap / React / Web3 / Angular / Vue / Flutter Web / WordPress) email: wdstudiomarket@gmail.com

Rate

50 USD/hour
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Alexei Kuzunetsov

Full stack web and blockchain developer Russian Federation, Moscow
Average review
0 reviews
Reputation 
25
0 jobs completed

Skills

About me

Thank you for your visiting my profile. I am a Full Stack Web and Blockchain Developer with experience building out both consumer and startup applications, including web, mobile, and desktop applications with the latest technologies. My skills are Blockchain: -- Bitcoin -- Ethereum -- Smart Contract -- Swap -- Solidity -- Dex / Defi Front End: -- React, React Native, React-Redux, React-Router -- Next.js -- Redux-Saga, Redux -- Thunk -- Angular -- Vue.Js, Vuex, Nuxt.Js, Quasar Framework, Vuetify, Vue material UI -- HTML5, CSS and ES6/7 JavaScript -- CSS Preprocessors: SASS, LESS -- Bootstrap and Material UI Back End: -- Node.js with Express -- Python with Django Framework -- PHP with Laravel and CI Framework -- Java Testing: Mocha, Jest Database: PostgreSQL, MongoDB, MySQL, SQLite Cloud Services: Amazon Web Services, Digital Ocean, Heroku The results are solutions that consistently meet my clients needs and exceed their expectations. Thanks a lot.

Rate

40 USD/hour
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