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$25 USD / hora
Bandeira do(a) SERBIA
vladicin han, serbia
$25 USD / hora
No momento são 4:51 PM aqui
Entrou no Freelancer em agosto 12, 2020
1 Recomendação

Aleksandar R.

@acafrel

monthly-level-four.svg
4,8 (8 avaliações)
5,5
5,5
$25 USD / hora
Bandeira do(a) SERBIA
vladicin han, serbia
$25 USD / hora
100%
Trabalhos Concluídos
100%
Dentro do Orçamento
100%
No Prazo
N/A
Taxa de Recontratação

Senior Web&Blockchain Developer

Hi, I am Aleksandar. Thank you for visiting my profile. I am a full stack developer with over 7 years of rich experience in web & blockchain development and project management. Enthusiasm , challenge-driven, test-driven are my favorites. Always ready for web development using Python/Django/Flask, Node/Express/Next, React/Angular/Vue/Web3.js and blockchain development using Solidity/Vyper. - Back-end Development * Python / Django, Flask, Ruby / Ruby on Rails * Node.js / Express.js / Nest.js * AWS (EC2, S3, Serverless, etc) * PHP / Laravel - Front-end Development * Advanced JavaScript frameworks - React/Redux, Angular, Vue.js, Next.js, Nuxt.js * General web technologies - HTML5, CSS3(SASS/LESS/SCSS), Bootstrap, jQuery * Languages - JavaScript ES6/7, Typescript - Blockchain Development * Ethereum Smart Contract(Solidity, Vyper) * ERC20, ERC777, ERC721, ERC1155 Token development * NFT(minting, marketplace with attracting UI and IPFS in Ethereum, Cardano, Binance, Solana, etc) * Web3.js and digital wallet integration like MetaMask, Phantom -Database *Non-realational Database: MongoDB, AWS Lambda *Relational Database: MySQL, PostgreSQL, Oracle - Other * Management Tools: Jira, Trello * Operating Systems: Linux, Windows * Tools: GitHub, GitLab, BitBucket, Docker, Kubernetes I always enhance my skills and learn new technology/languages/systems. I prefer to join large and long-term projects. Willing to work with you and make your idea into results-focused and world-class project. Able to work full time on your time zone. Thank you
Freelancer Javascript Developers Serbia

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Itens de Portfólio

- updated UI of the extension.
- Integrated 2 features(swap and presales) from Sovryn.
Wallet Extension
A NFT project with Pepper Attack game for gamers.
- NFT presales
- Opensea
- React minting pages
Pepper Attack - NFT/Solidity
A NFT project with Pepper Attack game for gamers.
- NFT presales
- Opensea
- React minting pages
Pepper Attack - NFT/Solidity
A NFT project with Pepper Attack game for gamers.
- NFT presales
- Opensea
- React minting pages
Pepper Attack - NFT/Solidity
A DeFi project based on RSK network.
- Launchpad for ZERO and MYNT
- Staking and Bitocracy
- Swap via AMM and Bonding Curve
DeFi - Sovryn Origins
A DeFi project based on RSK network.
- Launchpad for ZERO and MYNT
- Staking and Bitocracy
- Swap via AMM and Bonding Curve
DeFi - Sovryn Origins
A DeFi project based on RSK network.
- Launchpad for ZERO and MYNT
- Staking and Bitocracy
- Swap via AMM and Bonding Curve
DeFi - Sovryn Origins
Converted Figma design into #React we pages.
D3.js and SVG were used and all components are created from scratch.
Pawtocol Admin Panel(React)
Converted Figma design into #React we pages.
D3.js and SVG were used and all components are created from scratch.
Pawtocol Admin Panel(React)
Converted Figma design into #React we pages.
D3.js and SVG were used and all components are created from scratch.
Pawtocol Admin Panel(React)
This is Twitter Bot that provides the users with the way to monitor the twitters from the concerned accounts for the news and restocks etc.
It has versions for desktop and chrome extension.
I build it from scratch.

Functionality
- Monitoring accounts.
- Open links
- QR Scan & OCR
- Discord Authentication
- etc

Tech Stack
- Electron.js, Node.js, React.js
Extension & Bot - Electron.js, Node.js
This is Twitter Bot that provides the users with the way to monitor the twitters from the concerned accounts for the news and restocks etc.
It has versions for desktop and chrome extension.
I build it from scratch.

Functionality
- Monitoring accounts.
- Open links
- QR Scan & OCR
- Discord Authentication
- etc

Tech Stack
- Electron.js, Node.js, React.js
Extension & Bot - Electron.js, Node.js
This is Twitter Bot that provides the users with the way to monitor the twitters from the concerned accounts for the news and restocks etc.
It has versions for desktop and chrome extension.
I build it from scratch.

Functionality
- Monitoring accounts.
- Open links
- QR Scan & OCR
- Discord Authentication
- etc

Tech Stack
- Electron.js, Node.js, React.js
Extension & Bot - Electron.js, Node.js
This is Twitter Bot that provides the users with the way to monitor the twitters from the concerned accounts for the news and restocks etc.
It has versions for desktop and chrome extension.
I build it from scratch.

Functionality
- Monitoring accounts.
- Open links
- QR Scan & OCR
- Discord Authentication
- etc

Tech Stack
- Electron.js, Node.js, React.js
Extension & Bot - Electron.js, Node.js
This is the GraphQL product applied to the HIPAA(Health Insurance Portability and Accountability Act), which deals with the public common data and private one of each services.
It uses Node.js, Express.js, MongoDB and Apollo Federation, which enables to provide the way to build SaaS service for sharing common data and protecting private data of each services.

Tech Stack:
Node.js, Express.js, MongoDB, GraphQL, Apollo, Federation
HIPAA - GraphQL, Node.js
This is the GraphQL product applied to the HIPAA(Health Insurance Portability and Accountability Act), which deals with the public common data and private one of each services.
It uses Node.js, Express.js, MongoDB and Apollo Federation, which enables to provide the way to build SaaS service for sharing common data and protecting private data of each services.

Tech Stack:
Node.js, Express.js, MongoDB, GraphQL, Apollo, Federation
HIPAA - GraphQL, Node.js
This is the GraphQL product applied to the HIPAA(Health Insurance Portability and Accountability Act), which deals with the public common data and private one of each services.
It uses Node.js, Express.js, MongoDB and Apollo Federation, which enables to provide the way to build SaaS service for sharing common data and protecting private data of each services.

Tech Stack:
Node.js, Express.js, MongoDB, GraphQL, Apollo, Federation
HIPAA - GraphQL, Node.js

Avaliações

Mudanças salvas
Mostrando 1 - 5 de 7 avaliações
Filtrar avaliações por: 5,0
$500,00 AUD
Great work. Went above and beyond to complete my task.
C Programming Cryptocurrency
Avatar do Usuário
Bandeira do(a) Mathew C. @mathewcook
há 3 meses
5,0
$125,00 USD
Excellent freelancer
PHP JavaScript Python jQuery / Prototype
+1 mais
Avatar do Usuário
Bandeira do(a) KM3 Solutions LLC @kristoffermorri8
há 11 meses
5,0
[SECRETA]
I hired Aleksandar to help with AWS issue. He did a phenomenal job working with us on this project. It was tricky project and previous freelancers were unable to complete all the requested changes. He went above and beyond to ensure that I was completely satisfied before moving on after each change. I highly recommend home to anyone on a budget searching for a quick, knowledgeable, reliable freelancer that gets the job done right.
PHP JavaScript AJAX jQuery / Prototype Node.js
Avatar do Usuário
Bandeira do(a) Symbols LLC @austinmccoy
há 1 ano
5,0
$10,00 USD
Alexander did an excellent job, if I need more help I will hire him again.
JavaScript HTML Node.js React.js
Avatar do Usuário
Bandeira do(a) Andres A. @paskal77
há 1 ano
4,8
$4.700,00 USD
Aleksandar was delivering great value on my project, he setting up a google server and created a SaaS application according to my specification's. His communication was outstanding and clear from the start so there was no hesitation in increasing the scope of the project midway. I plan to request more development from Aleksandar in the future [08 July, 2021] Aleksandar has implemented all ideas to the software development i requested and foreseen issues that may occur in advance. It has been great working with Aleksandar.
Python Twitter
Avatar do Usuário
Bandeira do(a) Martin I. @isakssonjp
há 1 ano

Experiência

Frontend Web3 Developer

Sovryn Origins
out. 2021 - fev. 2022 (4 meses, 1 dia)
I contributed to building dapp using react.js, typescript, web3.js. - Sovryn MYNT presale - Sovyrn ZERO presale. Integration into Liquality wallet - dapp for Sovyrn Origins

Solidity Developer

Pepper Attack
mai. 2021 - set. 2021 (4 meses, 1 dia)
I contributed to building smart contracts for Pepper Attack. - built the smart contracts for presales and staking. - built the minting frontend to mint 10k NFTs

Contate Aleksandar R. para falar sobre o seu trabalho

Entre para falar sobre qualquer detalhe pelo chat

Verificações

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Principais Habilidades

JavaScript 5 Node.js 4 Python 3 PHP 2 jQuery / Prototype 2

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