Sławomir Bańdo

A blockchain application that integrates many features like NFTs, blockchain games, and in-game currency. I developed blockchain-related web apps, including NFT cross-chain bridge and a game similar to The Sandbox Game, using React, Next.js, and styled-components. I focused mainly on building UI and front-end features, but I also helped other team members, planned the task implementation, and recruited new team members.

I contributed to this project by developing a React web application providing a system to manage student accounts, interact with them via chat client, and plan a learning counseling strategy. For this app, I used React, Redux, Ant Design UI library, and external services such as Tableau, Mattermost, and Zendesk.

I also developed REST API microservices in AWS Chalice—Python framework for AWS lambda—Postgres database, Alembic, and SQLAlchemy. Other activities included developing Mattermost web plugins in React, creating unit tests in pytest, Jest, and Enzyme, and building AWS microservices infrastructure using SNS message bus, Elasticsearch, lambda functions, S3, Cognito, CloudFront, and Route 53.

The project involved developing adtech-related web apps using React, Hooks, Redux, React Query, Material UI, Nx.Dev, Jest, and Cypress. I extended Express.js and GraphQL services like UI gateway to communicate with our API, service wrapper for Google LineItem SOAP API, and tool to collect Elasticsearch troubleshooting data. Google Cloud Platform was used mainly. I also supported and mentored junior developers and participated in recruitment processes.