Senior Frontend Developer (React)

TL;DR

Senior Frontend Developer (React): Building modern dashboard UIs and canvas-based pipelines for Generative AI with an accent on performance with large media datasets and real-time interactivity. Focus on implementing complex drag-and-drop interfaces, integrating WebSockets for async pipelines, and shaping UX decisions for AI-powered products.

Location: Remote (Central Europe, Portugal, Serbia, Spain, or Ukraine)

Company

Global software company providing a growth engine for mobile-first businesses via a suite of ASO and Apple Ads optimization tools.

What you will do

• Build and maintain modern Dashboard UIs using React and TypeScript.
• Develop Canvas-based pipelines for Generative AI features.
• Integrate async pipelines via WebSockets for real-time updates.
• Optimize frontend performance for handling large media datasets.
• Collaborate on UX decisions and define data contracts with the backend team.

Requirements

• 5+ years of frontend experience, specifically with visually complex interactive applications.
• Expert proficiency in React, TypeScript, and Tailwind CSS.
• Strong experience with Tanstack libraries and scalable state management (Zustand, Tanstack Query).
• Proven track record implementing drag-and-drop interfaces, undo/redo functionality, and real-time previews.
• Must be based in Central Europe, Portugal, Serbia, Spain, or Ukraine.

Nice to have

• Experience with Canvas/WebGL libraries, such as Reactflow.
• Background in LLM-powered UX or generative AI product development.
• Knowledge of Zod for schema validation.
• Previous experience in marketing technology or ad platforms.

Culture & Benefits

• Remote-first environment with flexible working schedules for work-life balance.
• Medical insurance or health care compensation and paid sick leave.
• Vacation and public holidays according to your country's regulations, plus additional annual PTO.
• Support for professional growth via conferences, industry events, and internal courses.
• Coworking cost coverage and access to office hubs in key locations.
• Supportive, micro-management-free culture with semi-annual performance reviews.