Andrzej Budzanowski

Solidity / Backend Developer


886 886 936 cv@andrzej.budzanowski.pl Remote / Wrocław LinkedIn linkedin.com/in/andrzej-budzanowski-444239138/ andrzej.budzanowski.pl Print me for pdf

About Me

My name is Andrzej, and I am a seasoned backend developer with over eight years of professional experience in the software development industry. I began my career as a full-stack developerspecializing in PHP, which provided me with a solid foundation in building comprehensive web applications. Over time, I transitioned to focusing on backend development using JavaScript and TypeScript, sharpening my skills in creating efficient and scalable server-side solutions. Additionally, I have extensive experience working with blockchain technologies, including designing and implementing smart contracts for Ethereum and other EVM-compatible chains.

I'm excited to tackle new opportunities that will help me develop and evolve in my career and life.

Experience

4soft -

While working at 4soft, I was responsible for estimating and developing smart contract projects for various blockchain platforms, as well as overseeing backend project estimations and implementations using JavaScript and TypeScript. Additionally, I contributed to the creation of a proof-of-concept mobile application using Xamarin, demonstrating my ability to adapt to diverse technologies and deliver comprehensive solutions.

Projects

Paribus

Paribus is a decentralized lending and borrowing platform that offers features such as staking, using NFTs as collateral, liquidations, rewards, and a governance portal. Over a three-year collaboration with the client, I played a key role in developing backend systems, integrating third-party services, creating the native token contract, and providing technical support.

Project Duties
  • Developed backend solutions to retrieve NFT metadata and transaction data for accurate valuation.
  • Integrated the platform with multiple third-party services to enhance functionality and expand service offerings.
  • Designed and deployed the native token and staking smart contracts, facilitating seamless token operations and user incentives.
  • Managed subgraph definitions to optimize data indexing and retrieval on the blockchain.
  • Provided technical advisory to support informed business decision-making and strategic planning.
  • Collaborated with frontend developers to ensure seamless integration between backend services and user interfaces.

Champ Association

Champ Association is a platform that connects decentralized digital assets with physical products like custom “Blockchain-branded” champagne bottles. It allows users to participate in various ways, such as providing liquidity, buying products, or engaging in metaverse-based games.

Project Duties
  • Developed a smart contract for the marketplace with customizable payment solutions.
  • Created a smart contract for the platform’s native token.
  • Built a backend application to calculate the reflection mechanism, enabling payments for token holders.
  • Designed and implemented the backend application for the marketplace, managing product listings, transactions, and user interactions.
  • Collaborated closely with the client to define project requirements, design the platform’s architecture, and ensure alignment with their vision for the marketplace and token ecosystem.

IvyKoin

Ivykoin was an ICO platform for the IVY cryptocurrency, designed to enhance cryptocurrency usability by providing KYT and KYC information during transactions. As a backend developer, I was responsible for building and maintaining the platform.

Project Duties
  • Developed and deployed the native IVY token, ensuring compliance with industry standards.
  • Designed and implemented a custom blockchain-based payment processing solution.
  • Integrated CoinPayments API to enable seamless cryptocurrency transactions.
  • Managed transaction data retrieval and integration from third-party services to enhance KYT and KYC capabilities.
  • Collaborated with frontend developers to ensure cohesive integration between backend services and user interfaces.
  • Built a scalable backend application using PHP to support core platform functionalities, including user authentication and transaction processing.

OkTY

OK Thank You (OkTY) aimed to revolutionize how brands gather and use data while allowing users to profit from it. The app enabled users to share personal data, such as location and spending habits, while maintaining control over what data was shared. In exchange users could gain access to exclusive promotions or discounts from said brands or earn a profit of their revenue.

Project Duties
  • Developed smart contracts implementing the platform's native token.
  • Created functionality for converting external tokens to the native token within the platform.
  • Implemented features for retrieving and processing payment transactions from users

Wiko

Engineered a proof of concept mobile application for Wiko utilizing Xamarin to achieve seamless cross-platform compatibility across iOS and Android devices. Implemented advanced planning functionalities, alongside comprehensive PDF annotation features enabling users to mark up, highlight, and organize documents efficiently.

Company Duties

  • Created a smart contract for the platform’s native token.
  • Built a backend application to calculate the reflection mechanism, enabling payments for token holders.
  • Designed and implemented the backend application for the marketplace, managing product listings, transactions, and user interactions.
  • Collaborated closely with the client to define project requirements, design the platform’s architecture, and ensure alignment with their vision for the marketplace and token ecosystem.

Duties and achievements in 4soft

  • I researched blockchain technologies to understand client requirements and provide solutions.
  • I was involved in creation of educational materials for internal training.
  • I prepared project estimations and conducted extensive research on the technologies required to meet client objectives.
  • I wrote smart contracts using a range of standards, including ERC-20 and ERC-721, to deliver secure, compliant solutions tailored to client requirements.
  • Participated in the end-to-end lifecycle of blockchain projects, from conceptualization to deployment and ongoing maintenance.
  • I developed and maintained decentralized applications (dApps) using blockchain technology, ensuring secure and transparent transactions.
  • I conducted thorough code reviews and enforced best practices to ensure high-quality, efficient, and secure code across all projects.
  • I designed and optimized backend systems and APIs for blockchain services, improving performance and scalability.
  • I implemented security protocols and audited smart contracts, identifying vulnerabilities and ensuring compliance with industry standards.
  • I led the development of blockchain-based proof-of-concept (PoC) projects to explore new business opportunities for clients.
  • I integrated third-party blockchain APIs and services to extend the functionality of decentralized applications.
  • I automated deployment processes for blockchain-based solutions, streamlining continuous integration and deployment workflows.
  • I worked closely with stakeholders to define project goals, timelines, and deliverables, ensuring clear communication of technical aspects to non-technical team members.
  • I implemented gas optimization techniques in smart contract development to reduce transaction costs and improve efficiency.

SoftWizard -

In my role as a Full-stack developer at SoftWizard, I focused on developing aggregator of many e-commerce stores, startup called Vendoria.

Achievements

  • First time working on the greenfield project.
  • I had a direct impact on the development and implementation of user interfaces and underline functionalities.
  • Collaborated with senior developers to implement RESTful APIs and integrate third-party services, enhancing application functionality.
  • Worked with version control systems, such as Git, to manage code changes and collaborate effectively within a team environment.
  • Implemented unit and integration tests to ensure the reliability and stability of the applications.
  • We participated in Mobile-IT Expo 2017 in Kraków as a team, where I was one of the individuals responsible for explaining how our product works to visitors at the stand.

Malvion -

In my role as a Full-stack developer at Malvion, I was responsible for creating CMS for Bank Jarocin and CMS for listing offers for MebelArt

Education

Opole University of Technology Computer science
- - Left to pursue a career in the IT industry.
Technical School No. 4 in Racibórz Information Technology Technician
-

Skills

  • Expert
  • Solidity
  • Smart Contract
  • Node.js
  • TypeScript
  • JavaScript
  • Docker
  • Blockchain
  • Hardhat
  • OpenZeppelin
  • Intermediate
  • Nest.js
  • Web3
  • PostgreSQL
  • SQL
  • Git
  • Redis
  • Proficient
  • Jest
  • Apache
  • AWS
  • Nginx
  • Gitlab CI/CD
  • Ipfs
  • Cryptography
  • Linux
  • Devops
  • Used in the past
  • PHP
  • Laravel
  • Symfony
  • Java
  • C#
  • Xamarin
  • AngularJS
  • HTML i CSS

Languages