01
Blockchain Dev
- Smart Contracts
- Solidity
- Foundry
- Tokens development
- NFT
- DeFi
- Ethereum
- Smart Contract DevOps
Some Word About Me
Know Me More
I'm a Software Developer
As a Senior Developer with over 20 years of experience and a Master of Information Technology, I bring a wealth of knowledge and passion to every project. My commitment to writing clean, efficient code and doing things the right way ensures top-quality results.
I am fully dedicated to each project, striving for 100% customer satisfaction. My self-organization, quick learning, and motivation drive me to seek out and conquer new challenges.
Let’s connect and discuss how we can make your next project a success!
Name:
Željko KovačevićEducation:
Master of Information TechnologyLocation:
Croatia, EU202020
Years of experience
Some of my most recent projects
My Featured Projects
Crypto Token
MemberBeat Token (MBT) revolutionizes subscription management experience on memberbeat.com, providing unique tokens that enhances subscription plan benefits and enables access to exclusive features and services.
MemberBeat
Decentralized application (dApp) built on blockchain technology using Solidity to manage subscription services. It enables users to subscribe, manage their subscriptions, and handle token-based payments efficiently. It leverages Chainlink oracles for reliable price feeds and incorporates the new crypto token for various subscription-related transactions.
NextCampaign
An interactive web application designed for managing online campaigns. It provides a visual interface to map out new campaigns and calculates essential metrics such as CTR, ROI, and estimated profit.
How I can help your next project
What i do
Programming Languages
Proficient in:Some interesting facts about me
Fun Facts
484848
Finished Projects
171717
Happy Customers
34.19834.19834.198
Working Hours
8.6488.6488.648
Coffe Cups
Highlight My key Experiences
My Experience
(2024)
Smart Contract and Web Development | Memberbeat
Memberbeat.com is a cutting-edge blockchain project on Ethereum, deployed on Arbitrum. It features smart contracts, a web interface, and a Javascript Node.js module (SDK) for seamless interaction. Users can subscribe to various plans with flexible billing options, paying in tokens or fiat currencies. Prices are dynamically adjusted based on live token data, ensuring accurate billing. This project efficiently manages subscriptions in a decentralized environment.
- Developed Smart Contracts in Solidity
- Built a Node.js module with an API client for smart contract interaction
- Created the Memberbeat.com backend using Next.js and a MongoDB database.
- Developed a React frontend to provide a user interface for subscribing to different plans and options
(2022 - 2024)
Fullstack Web Development | BTSO
Btso.ch is the web-based learning app that offers an innovative and practice-orientated solution: a digital tool for simplified access to knowledge and tools. It teaches professionals how to recognise binocular abnormalities more quickly and how to treat them appropriately. The application was created from scratch based on the customer's requirements and detailed documentation. It included database desigs, PHP Laravel backend and API development, and frontend development in Vue.js.
- PHP + Vue.js Fullstack development
- Billing process integration with the accounting software
- Mysql database creation and maintenance
(2022 - 2023)
Fullstack Web Development | Voicecrafters
Voicecrafters.com is a marketplace similar to Upwork where voice actors offer their services to clients. Responsible for both the creation of new features and the maintenance of existing functionalities on a WordPress-based platform, their work was instrumental in enhancing user experience and operational efficiency. Key projects included the development of pricing and price calculation systems for voice projects, ensuring accurate and fair compensation for a diverse range of voice actors. The role demanded proficiency in PHP, JavaScript, CSS, and MySQL, skills.
- PHP + Javascript Wordpress development
- Worked with ACF (Advanced Custom Fields) plubin on Wordpress
- Frontend page creation based on the Figma designs
- Mysql database maintenance
(2021 - 2024)
Fullstack E-Commerce Development | Membershops
MemberShops is an all-in-one platform designed to facilitate the sale of digital products such as ebooks, software, and videos on WordPress sites. It provides comprehensive membership plans, a shopping cart, and a variety of automation tools to streamline the management and monetization of online stores. The platform allows for the easy creation and management of memberships, payment processing, and ensures a seamless shopping experience for customers. Additionally, MemberShops includes marketing and analytics features to help businesses grow and track their success, making it an efficient solution for monetizing digital products.
- PHP Laravel + Python backend
- REST API development
- Redis queue / Supervisord
- Wordpress plugin that connects and uses the backend PHP API
- WordPress themes specifically crafted and designed for the MemberShops platform
https://membershops.com
https://quantumplr.com/
https://www.idplr.com/
https://www.indigitalworks.com/
(2020)
Interactive Web Application | Nextcampaign
Developed an interactive React.js application for managing online marketing campaigns, integrated with the aMember user management and billing platform using a custom-built credit card processing plugin.
- Created the SVG main application module as a proof of concept.
- Designed the backend database and Laravel MVC application.
- Developed the React.js application incorporating the SVG module.
- Integrated the application with the aMember platform.
- Implemented a custom credit card processing plugin for seamless billing.
(2020)
Revolut API Web Administration | MF Network
Developed a web administration system to manage multiple Revolut business accounts, automate invoicing, and handle transactions.
- Set up and managed multiple Revolut accounts with credentials.
- Automated invoice generation for incoming and outgoing transactions.
- Stored sender/receiver information for future transactions.
- Integrated with various APIs for seamless data handling.
- Provided a responsive interface for transaction summaries and account management.
(2011 - 2024)
PHP Web Developer and Webmaster | Prilika dana d.o.o.
Webshop Development with PHP Slim Framework and MySQL Database
- Integrated with various Croatian payment providers, including T-com, Corvus, and WSPay.
- Designed, optimized, and maintained MySQL databases.
- Implemented API integrations with platforms such as Facebook, Google+, Google Analytics, Yahoo, LinkedIn, Windows Live, and Twitter.
- Integrated PostAffiliatePro affiliation system via API.
- Developed online booking systems for hotels through API integration.
- Utilized HTML5 technology to create responsive designs for desktops, mobiles, and tablets.
- Developed an online car insurance billing system and integrated it with local Croatian insurance companies using API interfaces (SOAP, XML).
(2004 - 2011)
Java Developer | NTH Group
Java Development for Telecom VAS Applications
- Developed server-side telecom Value-Added Services (VAS) applications, including SMS, Voice, and WAP.
- Utilized custom in-house frameworks.
- Worked with GlassFish for application deployment.
- Created desktop applications in Java for building SMS, MMS, and Voice services.
