Solidity Developer

Fullstack Developer | React.Js & Node.Js,

A gutty, perseverant front-end developer who knows no defeat in acquiring state-of-the-art technologies and is capable of expertly navigating trending software/tools applications with ease. Proficient in software development from design to implementation to deploying for over 8 years.


Experience: 6 years

Yearly salary: $52,000

Hourly rate: $40

Nationality: 🇨🇳 China

Residency: 🇷🇸 Serbia


Experience

blockchain
Htec Group
2024 - 2024
Developed and deployed smart contracts using Solidity on Ethereum and Binance Smart Chain for decentralized finance (DeFi) applications. Integrated Web3.js and ethers.js to enable secure wallet connections and interactions with blockchain networks. Built decentralized applications (dApps) focusing on user authentication, token transfers, and transaction management. Collaborated with cross-functional teams to design and implement secure blockchain-based solutions for various business requirements. Optimized smart contracts for gas efficiency and security, conducting thorough testing and audits to ensure functionality.
Full-stack Developer
Comtrade
2023 - 2024
Took the lead in understanding the requirements of a new MVP, working closely with other teams to ensure alignment and clarity, defining the initial scope for development, and developing, testing and deploying of the project. Created a dashboard for individual hospital and regional managers across the country to quickly get a high level overview of their weekly, monthly and yearly treatment periods and patient history. Created and maintained user roles and authorization profiles. Detected and solved 10+ bottlenecks and 100+ bug fixes in regular code reviews to ensure code quality and proposed technical solutions to resolve them. Fiori launch pad configurated, created and maintained the groups and tiles. Created a centralized system to manage user identities, authenticate users and control access to various internal and external software applications within an organization, thereby enhancing security and efficiency by 28% across its IT infrastructure. Participated in 10+ business project development from scratch (brainstorming, planning, prioritizing, propose, voting, delegating, countdown, executing, reporting, measuring and improving) for project crowdfunding and equity crowdfunding. Integrated a third-party API into a web application, improving functionality and user experience, resulting in a 10% increase in user satisfaction. Significantly improved app responsiveness and reducing load times by 30% by optimizing the performance. Implemented basic website security by implementing Google reCAPTCHA.
Full-stack Developer
Medius
2019 - 2023
Inspected and diagnosed front-end and rendering performance issues and computationally intensive bottlenecks such as slow loading times, sluggish animations, or delays in response to user interactions, implemented solutions to improve the overall performance and user experience of the application. Wrote SQL queries for creating, updating tables, modifying and extracting data. Detected and solved performance and scalability issues, resulting in a 35% increase in page load speed and a 15% increase in user engagement. Designed and developed a web application using Angular, resulting in a 25% increase in user engagement and a 20% decrease in bounce rate. Managed AWS infrastructure and services including access control, network configuration, compute resources, application deployment, database management, storage, and monitoring/logging with IAM, VPC, EC2, Elastic Beanstalk, Lambda, API Gateway, Postgres/Aurora, MQ Broker, S3, CloudTrail, etc.
Frontend Developer
Vega IT
2016 - 2018
Developed and implemented a new front-end architecture using React.js, resulting in a 35% increase in page load speed and a 20% increase in user engagement. Leveraged unit testing to software development, code refactoring, CI/CD pipelines, bug fixing in software maintenance and raised code quality to 91%, resulting in 20% reduction in bug-related delays. Kept up-to-date with trend technologies frameworks, boosting team efficiency by 20% and project success rate. Designed and developed a reusable component library for further use, saved development time by 30% for new projects. Integrated react components with Chart.js to create interactive visualizations for analyzing market data. Utilized Redux for state management, improved code complexity by reducing 25% of repetition and a 10% increase in team productivity.
Backend Developer
Endava
2012 - 2015
Integrated AI models into backend services using the Python frameworks Flask and Django. Developed and maintained scalable server-side applications using Node.js, Express, and MongoDB.

Skills

solidity
english