Senior Web3.js and Smart contract developer

€18-36 EUR / hour

Mbyllur

Postuar

almost 2 years ago

€18-36 EUR / hour

We are looking for a mature and talented Senior Web Developer that has several years’ of first-rate commercial experience. The position requires you to have a deep understanding of Web3 and Ethereum. You will be working with six other developers on the Off Chain team in agile, two-week sprints on the evolution of the web application. This is a critical position requiring you to take ownership of multiple tasks and resolve technical roadblocks as they emerge. You’ll be truly passionate about the craft of software development. The role demands the highest standards of tested, linted and formatted code. We are a fully remote team located across Europe and the Americas. We have two daily stand ups at 10am CET and 9:30am EST, this ensures suiting the individual team members core working hours. Responsibilities: - Build clean, maintainable, and well-tested backed code (TypeScript, Node, GraphQL, AssemblyScript) - Collaborate with Product, Design, and Engineering teams to define, prioritize and develop solutions/features - Own and plan projects and products end to end for long-term impact – including APIs, backend, testing, etc. - Contribute highly performant web3 code with a strong focus on security. - Follow Test Driven Development process - Monitoring and improving backend performance. - Documenting application changes and developing updates. Requirements: - Demonstrated coding experience with Web3 and Ethereum development tools, languages, and libraries, such as [login to view URL], The Graph, Hardhat, etc.. - JavaScript and TypeScript professional with a minimum of 5 years of experience - Open Source software development experience with expert Git and GitHub skills - Advanced knowledge of Node and GraphQL APIs - Experience working with SQL and NoSQL databases - Deep understanding of software documentation procedures - Preference for Test Driven Development (TDD) and highly testable code - Fluency in English This is long term opportunity for talented developers. Thank you for your apply. Good luck.

ID e Projektit: 33934859

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36 propozime

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36 profesionistët e pavarur ofrojnë mesatarisht €28 EUR/orë oferta për këtë punë

@Koki1216

Hello, this is Koki from Japan who has been working with Fullstack Web and Blockchain development for over decades years now. I have checked your project description carefully and I think that I can help you to complete this project fully 100% sure to satisfy your requirement. I'd like to have a brief chat or call to discuss further details about your project soon. Looking forward to working with you together on this project. Thanks! Koki

€36 EUR në 40 ditë

4,7

(18 përshtypje)

6,9

@shramko79

Hi As a Software Developer with 5 years of experience in Blockchain, Cryptocurrency, wallet, I apply with enthusiasm for this position. I am currently a Software Engineer: Blockchain at 7PH Technologies, where my role mirrors your requirements. In particular, I: Develop emerging technologies such as Blockchain, Cryptocurrency, wallet, AI, Machine Learning, and Data Analytics Design and refine solutions to secure client systems and improve key management systems. Am the Subject Matter Expert for resolving bottlenecks/bugs and devising solutions to mitigate such issues. In addition to my professional experience, I hold a Master of Computer Science. I have strong experience in developing large-scale concurrent, event-driven distributed systems, as well as working on public-key cryptography/blockchain. Alongside Python, JavaScript, Go and C++, I possess excellent CS fundamentals, including good working knowledge of algorithms and data structures. Especially I have built a Trading bot. I have built NFT marketplaces and a lot of Swap sites in Solana network and Ethereum network using solidity & Smart Contract & truffle and Remix & Web3 and MERN stack, Full-Stack. I will share my last examples via chat. Please find attached my resume for your consideration. Thank you very much for your time. I look forward to hearing from you regarding the next steps. Yours faithfully, Oleksandr.

€30 EUR në 40 ditë

5,0

(18 përshtypje)

5,8

@pavlovicn223

Hello, Thanks for your job posting. I'm a senior Blockchain/Web3JS, Solidity EXPERT, with rich experiences in developing Smart Contract, creating Token, NFT marketplace, pancake/uniswap Sniper bot, DEX. while reading your requirement, I am sure I understood the main goal of your project. As I am strong at this kind of project, I am pretty sure that I can deliver you high-quality results within a short amount of time. If you award me, I'd be very happy to discuss this further and get started for you immediately. I will do my best for you to provide High Quality + Fast Speed + FullTime. Look forward to hearing back. Best regards Nikola

€27 EUR në 40 ditë

5,0

(5 përshtypje)

5,7

@dataspro

Hello: After reading in detail the requirements of your project and concluding that they match my areas of knowledge and skills, I would like to introduce myself. My name is Anthony Muñoz and I am the lead engineer for DS Pro IT agency. I have worked for over 10 years in Backend and software development and have successfully done multiple jobs on this and other Freelance platforms. It will be a pleasure to work together to make your project a reality. Please feel free to contact me. I´m looking forward to working with you. I really appreciate your time and remain attentive to any request or question. Greetings

€29 EUR në 40 ditë

4,7

(5 përshtypje)

5,7

@alexgurudewloper

I am Aleksei working on the blockchain dapp developer team. Main area of work is Smart contract development using Solidity and Rust. blockchain development is my dream and love. do you have a very good idea in blockchain? let's work with me for implement your idea part area of work is Dapp frontend development using react, ethers and web3. Also, my team has a lot of experience with ICO projects, staking projects and NFT projects etc(NFT mint sites,NFT marketplaces and NFT + Unity3D game sites). As one of senior blockchain developer teams, I can support all kinds of blockchain projects and are ready to turn your ideas into the real world. And other one: I have excellent Web/App designing and development skills, enjoying both the technical and artistic sides of web development. I’ll provide you with an eye-catching Website/App that will be entirely responsive, easy to navigate, and well-designed, with all of the latest features and functionalities. I'll strive to create aesthetically pleasing sites and apps that feature mobile-friendly and user-friendly designs. I always aim for high-quality work and long-term relationship with our customers. thank you.

€27 EUR në 40 ditë

4,7

(22 përshtypje)

5,9

@icaveli

Hello, there, how are you ? I am a Blockchain developer, and I have experience in NFT marketplace, Ethereum, Solana, BSC, Polygon, Avax, Tron, Cronos network for a long time and I have finished many projects using ERC20, ERC721 Also, I know well about NFT minting, NFT drop and I am very familiar with Smart Contract using solidity and Rust. I can integrate Presale, ICO, Token Create, Token Rebase and I will provide good result. Please ping me and let's discuss project with me kindly. Best regards

€35 EUR në 40 ditë

5,0

(8 përshtypje)

5,7

@DanyloNovykov

Hello,I am interested in your project because I have deep understanding of Web3 and Ethereum. As a blockchain developer,I can create Smart contracts and manage intergration part for blockchain development. Please contact me for further discussion. Thank you.

€36 EUR në 40 ditë

5,0

(2 përshtypje)

5,1

@jimenespablo

✋ Hi I am the right developer you are looking for. I m a blockchain expert and have much experience in Solidity and web3. I'm interested to hear more about your project. If you award me the project I'd be very happy to discuss this further and get started for you as soon as possible. I will do my best to meet your need. Best regards.

€27 EUR në 40 ditë

5,0

(5 përshtypje)

4,6

@vadimvirvikhvist

⭐⭐⭐⭐⭐ Hi. ⭐⭐⭐⭐⭐ Thank you very much for giving me this opportunity to participate in the project. If you are looking for quality work, please give me an opportunity to explain more about the work we are going to do for your project. I will be waiting for your positive and fruitful response. Thanks.

€19 EUR në 40 ditë

5,0

(6 përshtypje)

4,2

@opeidaroman

Dear client. Thanks for your job posting. I read your job description carefully and I can be sure that I'm just fit your requirements. I've got 7+ years experience of developing frontend & backend and 3+ years experience of blockchain developer. I've built many production web projects using several frameworks such as react, vue, next, nuxt, laravel and so on. And in 3 years, I lead development of 10+ Smart Contracts with solidity & well-optimized logic. So I assure that you will get high quality product in a short period of time with competitive budget. My skills includes html, css, javascript, typescript, laravel, react, vue, angular, next, express, node, UI/UX, mongo, mysql, nosql, go, web3, graphql, figma, photoshop, subgraph, solidity, CI/CD and so on. All I want to say is that I can do your project perfectly. Looking forward to meet soon. Thanks & Regards.

€27 EUR në 40 ditë

4,1

(9 përshtypje)

4,9

@freelancerpoint

Hi, I am talented web/blockchain developer who has deep understand and rich experience for Web3 and Ethereum. I can work in team environment and can be responsible for mutiple tasks. I am confident that my skills are matched to this position. Please drop me message. I am looking forward to hearing from you soon.

€27 EUR në 40 ditë

5,0

(1 review)

4,0

@yurazatorsk

Dear sir. I have read your job posting and I think that I can build your project more efficiently with my knowledge and experience. I'm looking forward to working with you and I'm very sure that you'll feel great working with me. I have all the necessary skills required to complete the project. I'm available to start the work right away and would love to assist you in the long term. I am ready to start your project now. "Looking forward to your positive response, please open your chat window to more details". Best regards!

€27 EUR në 40 ditë

5,0

(4 përshtypje)

3,2

@nitishghimire

I have knowledge on solidity and smart contract. If there is place for intern or junior guy. I can be helpful. Just let me know. Hi, I am a Computer Engineer with 7 years of experience in PHP(Laravel), React Native and Python. I have worked on several similar projects E-commerce Websites, Python Scraping and ERP Applications, and can deliver quality service to tight deadlines. You can see an example of one of those projects in my portfolio here: https://www.freelancer.com/u/nitishghimire I'm interested to hear more about the project. If you award me the project I'd be very happy to discuss this further and get started for you as soon as possible. Thanks! Nitish Ghimire

€27 EUR në 40 ditë

5,0

(2 përshtypje)

0,2

@maksimriaba77

Hello I am full stack web developer of over 8 years of experience. I am very interested in your project. I can complete your project and start work asap. Kind Regards

€33 EUR në 40 ditë

0,0

(0 përshtypje)

0,0

@NativeTechnology

Hello, Hope you are doing well..! "I understand that, the quality of content matter most of you" I'm a senior web designer & developer. Having 7 years of experience in this field using html , Css ,php, Laravel , ci , python, angular js , over web and design platforms. I'm applying to this job as an interest in it. please consider if its fit in the criteria. Regards, Ankit s.

€30 EUR në 40 ditë