Roman Romanko

SENIOR FRONTEND DEVELOPER Gambling App

Jun. 2022 - Oct. 2024 | FullTime

• Refactored existing app, reduced crashes, and increased performance
• Closely worked with the design, back-end and testing teams to develop the high quality app
• Conducted code reviews for team members, providing mentorship and guidance. Facilitated onboarding for new teammates to ensure a smooth transition into the team.
• Developed clean, maintainable, and scalable code to support long-term project growth and adaptability.
• Created comprehensive documentation for complex workflows, ensuring clarity and ease of understanding for the team.
• Integrated services dor dynamic likning with web app, tracking user behavior and push notifications

SENIOR FRONTEND DEVELOPER HealthCare product

Jun. 2021 - May. 2022 | FullTime

• Developed and deployed features for messaging and notifications using telegram-bot-api, enhancing patient-doctor communication.
• Collaborated closely with backend developers and product teams to design features that met healthcare compliance and security standards.
• Actively participated in code reviews, mentoring junior developers and ensuring adherence to best practices in React and React Native development.
• Improved the application's crash recovery and data persistence, contributing to a more stable and reliable product in a critical domain.
• Implemented robust testing strategies with Jest, Testing Library, and Detox to ensure code quality and stability across mobile devices.
• Integrated Firebase services, including Firestore for real-time data management, Analytics for user behavior tracking, Crashlytics for crash reporting, and Cloud Messaging for real-time notifications.

MIDDLE FRONTEND DEVELOPER Web3 Banking

Feb. 2019 - May. 2021 | FullTime

• Developed and maintained a web3-based crypto exchange platform aimed at transitioning into a crypto bank.
• Integrated web3.js for blockchain interactions, enabling secure and efficient crypto transactions and wallet management.
• Built responsive and dynamic frontend components using React, with state management handled by Redux and Redux Toolkit.
• Implemented complex asynchronous data flows and optimized app performance, ensuring smooth interaction with blockchain services.
• Managed AWS infrastructure, deploying and scaling microservices on EC2 instances, and optimizing storage solutions with S3.
• Ensured security best practices were followed in handling crypto assets and transactions.