Backend & DB for cryptoexchange with payment gateway

A good portion of the project is already completed. Our budget is 200€-400€ and the project deadline is exactly no later than 26th of May. More information about the project is in the .pdf file. Our priorities are security then convenience and finally, optimization.

This project is about creating the backend infrastructure (preferably with NodeJS and MySQL) for a cryptoexchange that involves both fiat and crypto currency. Additionally, a payment gateway (Paypal, ERC20, Bitcoin) will need to be implemented as well. As previously stated, part of the work is already complete: a good chunk of the database is structured, an algorithm for finding optimal exchanges is written, and some very basic web3js manipulation is present. For those interested, I recommend reading the .pdf file. We have intentionally made parts of the documentation ambiguous to hide important project characteristics. However, we will share the information with those interested in partaking in the project.

Skills: Ethereum, MySQL, node.js, PayPal API, PHP

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About the Employer:
( 1 review ) Osijek, Croatia

Project ID: #19290099

22 freelancers are bidding on average €378 for this job


Bok branimir1999, If you want then we can have a 1-1 discussion on FL chat. kindly let us know. Our latest Node projects are: [login to view URL], [login to view URL], Best regards, Michael

€400 EUR in 6 days
(782 Reviews)

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(58 Reviews)


€1000 EUR in 10 days
(85 Reviews)

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€200 EUR in 4 days
(61 Reviews)

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€333 EUR in 10 days
(62 Reviews)

Hi, Thanks for your job posting. I've read your project description carefully. You are going to build backend & DB for cryptoexchange with payment gateway. As a senior web developer, I have rich experience in this k More

€300 EUR in 10 days
(41 Reviews)

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(38 Reviews)

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€500 EUR in 10 days
(29 Reviews)

Hi, Thank you so much for the nice work opportunity. I am a Website and Mobile Application developer and having more than 12 years of experience in the industry. I do work on following technologies... Android Appli More

€335 EUR in 5 days
(52 Reviews)

Hello sir, nice to meet you, I have just read your project. I am interesting about your project. I have top skill of blockchain and have experienced for long time. . I have been creating high quality and excellent More

€333 EUR in 10 days
(18 Reviews)

Hi,sir, I'm sure that I can be a excellent candidate for your project. Please contact me, so that we can discuss more over chat. I value my credits from clients. Thank you for your reading. I have worked for a long ti More

€333 EUR in 2 days
(11 Reviews)

Feel fee to contact me forBackend & DB for cryptoexchange with payment gateway .Shoot me message to discuss further more details .We provide the comments,images,videos,demos and live sessions in order to help the More

€250 EUR in 3 days
(9 Reviews)

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€500 EUR in 7 days
(2 Reviews)

Nice to meet you. I have RICH EXPERIENCE and GOOD SKILLS for your project. I have learnt a graphic design course and I have a good sense of website and graphics design. I am a senior Full-Stack Web Developer. M More

€333 EUR in 10 days
(3 Reviews)

Hello. I am very interested in your job post about currency exchange. Le'ts discuss more detail in chat. Best Regards.

€333 EUR in 10 days
(2 Reviews)

Hello I am Henry. My account is closed because of my fault. I tried to create cooperate account, and there's something wrong. I asked freelancer development team to open my account and they will open after 7 days. More

€333 EUR in 10 days
(2 Reviews)

Already experience on working exchange s based on fiat pairs as well ETH smart contracts pairs. let me know if you wish to close it quickly

€444 EUR in 5 days
(2 Reviews)

Greetings, We are colonist services providers from India for Cryptocurrency development, Crypto exchanges,Crypto wallets, Mining platform apps, Exchange platforms and other types of Blockchain based development.  More

€333 EUR in 10 days
(1 Review)

Good Day,, Looking forward for more details about project. Backend & DB for cryptoexchange wll be done error free and payment gateway is a regular routine lets disscuss and start the project Thank You

€333 EUR in 10 days
(1 Review)