Ditutup

Senior Blockchain Developer with Java Spring Boot experience -- 2

I need a senior blockchain developer with strong Java Spring Boot experience.

There is a bug in an existing project. The users can't purchase an NFT now.

The cause is in smart contract or backend(spring boot).

Your work is to fix the bug.

There will be another tasks if you fix the bug correctly. I

If you take a look at the project, you can feel it.

You have to be experienced in Java Spring Boot.

Frontend is React.

Kemahiran: Java, J2EE, React.js, Blockchain, Solidity

Tentang Klien:
( 15 ulasan ) Jackson, United States

ID Projek: #33936678

34 pekerja bebas membida secara purata $370 untuk pekerjaan ini

NovaSofts

Hi There please visit my portfolio for similar projects : https://www.freelancer.com/u/NovaSofts?w=f&ngsw-bypass= I have checked your project description and understand everything. I am very confident that i can hand Lagi

$325 USD dalam 7 hari
(377 Ulasan)
7.7
AwaisChaudhry

Hello there, How are you doing? Just saw your project posted. I read the brief details and I felt I could help you with it because I have good skills with Solidity, React.js, Java, J2EE and Blockchain. Lets start the c Lagi

$350 USD dalam 20 hari
(59 Ulasan)
7.8
(5 Ulasan)
6.8
ilcekrstev

[login to view URL] [login to view URL] Hello, I hope all goes well. I read the requirement carefully and feel confident about the project because I did several similar projects before. Lagi

$360 USD dalam 10 hari
(8 Ulasan)
5.1
(5 Ulasan)
5.0
Iharholman

Dear client! I am professional blockchain developer with more full years of experience. I am very familiar with SmartContract and Solidity. And I am Java Spring Boot developer. So I think this job is an ideal match wit Lagi

$300 USD dalam 3 hari
(10 Ulasan)
5.0
vladyslavmazurok

Hi! I am a professional Javascript developer with 8 years of background and familiar with skills including J2EE, Blockchain, Solidity, React.js and Java. Being involved in many projects, I have my own knowhow to build Lagi

$360 USD dalam 7 hari
(5 Ulasan)
4.5
cmoralesvasquez

Generally, NFT projets are combined with Smart Contract + ART + Minting Hub(Frontend) + Social Community (Discord, Twitter, Instagram, etc). I have 7 years of experience in web and Blockchain. I can fix your issue in Lagi

$325 USD dalam sehari
(6 Ulasan)
4.3
NazarankaA

Hello. How are you doing? I have developed many blockchain projects using react js, web3 and solidity. Also I am familar with backend like Spring boot and node js. I can provide good and fast work. Hope to discuss furt Lagi

$1125 USD dalam 7 hari
(7 Ulasan)
4.4
semochkomaksym

Thanks for your job posting. I have excellent experience of Blockchain/Web3JS, Solidity, Rust, developing Smart Contract,NFT marketplace, pancake/uniswap Sniper bot(FrontRunner), DEX. My previous works are as follow Lagi

$300 USD dalam 7 hari
(5 Ulasan)
4.2
ayesha0124

Hello there, I have great experience with J2EE, Solidity, Blockchain, Java and React.js. I am sure i can help u as i have experience with doing similar jobs. You can have a look at my profile here: [login to view URL] Lagi

$350 USD dalam 7 hari
(1 Ulasan)
3.6
kungfuupanda9

Hello, this is Srdan A. from Serbia who has been working with Full stack 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 c Lagi

$300 USD dalam sehari
(3 Ulasan)
3.8
aleksandar030030

Hi, there! I've seriously read your post and I have understood what you need. I am a senior web and Blockchain developer who has rich experience in developing Blockchain and NFT Mint, Marketplace. These are my skills Lagi

$300 USD dalam 7 hari
(3 Ulasan)
3.5
milosdev66

Hello. I hope you are doing well. As a senior blockchain developer, I have 4+ years of experience in blockchain application development such and NFT marketplace and can freely integrate frontend and smart contract usin Lagi

$300 USD dalam 4 hari
(2 Ulasan)
3.6
oleksandrsoboli2

Hello, dear client. I hope you are doing well. As a senior developer, I just read your description carefully and got that you are looking for a Blockchain expert. I am familiar with Blockchain tech such as Solidity, We Lagi

$350 USD dalam 7 hari
(3 Ulasan)
3.3
Gulshair1122

Hi Respected Client Professional and Expert Java developer here with 5 years experience specifically in SPRING BOOT. I have gone through your post and without any doubt I can do this without any difficulty as I only d Lagi

$300 USD dalam 4 hari
(3 Ulasan)
3.2
stairovic940

Hi, I am Java Spring Boot, NFT marketplace, Smart Contract, React.js expert developer. I have developed many Java backend using Spring Boot, Spring MVC and web front end using react.js. Also I am NFT expert developer. Lagi

$300 USD dalam 7 hari
(6 Ulasan)
3.3
(1 Ulasan)
2.8
stanislavpro

Hello. Thank you for your job posting for me. I have read your job description carefully and it sounds very interesting to me. As a blockchain professional who is well versed in NFT minting and marketplace site develop Lagi

$325 USD dalam 7 hari
(3 Ulasan)
2.6
hnutovkyryll

Hello! How are you? I've rich experience in java spring and javascript. I think I can help you with low budget. The problem must be in back-end. Wait your contact. Best regards.

$300 USD dalam sehari
(2 Ulasan)
2.1