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This position was posted on April 7, 2026 and is likely no longer accepting applications. We've kept it here for historical reference. Check out the similar jobs below!

Staff Frontend Engineer

Mango Technologies, Inc.

Job Overview

Location

Poland

Job Type

Full-time

Full Job Description

📋 Description

• As a Staff Frontend Engineer at ClickUp, you will play a pivotal role in architecting the future of work by building and enhancing the converged AI workspace that unifies tasks, docs, chat, calendar, and enterprise search, empowering millions of teams to break free from silos and reclaim productivity.
• Your day-to-day responsibilities include building features in Angular 2+, collaborating with designers, backend, and integrations teams, architecting efficient and reusable frontend code, managing project priorities and deadlines, identifying and resolving performance and scalability issues, building and maintaining unit and integration tests, fixing bugs rapidly, and following established practices for state management.
• You will join a bold, innovative, and fast-scaling team at ClickUp that values getting things done, operational focus, and a driven culture, where collaboration with QA counterparts ensures code quality and edge cases are thoroughly tested.
• In this role, you will deepen your expertise in modern JavaScript frameworks, TypeScript, RxJS, NgRx, and performance optimization while mentoring teammates and pioneering AI-driven features that shape the future of work.

🎯 Requirements

• 8+ years of experience working with JavaScript and one or more modern frameworks, with Angular 2+ required
• Experience with Redux-style state management (NgRx), TypeScript, and RxJs
• Strong HTML/CSS expertise, including layout, specificity, cross-browser compatibility, and accessibility

🏖️ Benefits

• Opportunity to learn, use, and pioneer AI in ways that shape the product and the future of work
• Work in a bold, innovative team redefining what’s possible in productivity software
• Support for building your boldest career with potential impact-based hiring and growth opportunities

Skills & Technologies

JavaScript

TypeScript

Vue.js

Angular

Frontend

Senior

Onsite

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Mango Technologies, Inc.

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About Mango Technologies, Inc.

ClickUp is a San Diego-based productivity platform that unifies tasks, documents, goals, chat, and whiteboards in one cloud workspace. Founded in 2017, the company serves individuals, startups, and large enterprises seeking to replace scattered tools with a single, customizable hub. Its feature set includes hierarchical task management, real-time collaboration, time tracking, reporting dashboards, and hundreds of pre-built templates and integrations. ClickUp targets teams in software development, marketing, and operations that need to plan, execute, and monitor work without switching applications.

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