Mykola Piskovyi

- Developed the core Next.js application from concept to deployment, implemented Auth0-based authentication/authorization, and integrated Sentry and Slack for monitoring and real-time alerts.
- Evaluate and research POC ideas to check new features and technical solutions.

- Built and maintained features for Fiverr Business, including enterprise workflows and collaboration tools
- Created reusable UI components and packages across the whole platform.
- Integrated Grafana metrics to monitor performance and user behavior.
- Improved product flows, feature checks, and A/B testing.

- Led frontend development team.
- Modernized the platform by migrating a legacy Backbone/CoffeeScript codebase to React + TypeScript.
- Implemented WebSockets proxies between a few services.
- Built POCs for GraphQL + Apollo Federation across frontend and backend.
- Developed new UI features with product and design teams
- Extended existing and new Golang services

Designed and built a new batch service back-office app from scratch for scheduled push messaging with custom jobs and sub-tasks; also developed B2C and back-office React applications and established CI/CD and testing pipelines for the frontend stack.

Migrated a legacy AltJS/Flow codebase to Redux and TypeScript, improving performance 20x and reducing bundle size from 16MB to 1.6MB; refactored product into baseline and customizable modules with independent repositories.

Implemented features and maintained the frontend of a big-data visualization platform using React, Backbone, TypeScript and D3.js; created independent modules with their own repos and internal developer tools that reduced delivery times.