We are United Software — a place where cool people start their career after working for well-known IT companies. But why do they come here? United Software is not just another outsourcing company. This is a company that works with Uber, Virgin Mobile, Kia and other well-known and dynamically growing...
6 січня 2026 бронювання

Senior React.js Engineer (Offolio) (вакансія неактивна)

Київ, Львів, Краків (Польща), віддалено

OFFOLIO is a French Tech startup founded in Paris in 2020, dedicated to transforming project portfolio management through Artificial Intelligence. Our SaaS solution automates planning, optimizes resource allocation, and secures critical deadlines for complex industries such as aerospace, defense, energy, and pharmaceuticals.
By leveraging AI-driven simulations, OFFOLIO reduces manual tasks by up to 95%, anticipates risks, and provides real-time scenarios to improve strategic decision-making. Our mission is to empower project managers with tools that deliver agility, efficiency, and a data-driven approach to managing portfolios as investment assets.

Role Overview
As a Frontend Developer, you will design, develop, and maintain high-quality web applications. You will collaborate with cross-functional teams to deliver robust, scalable, and user-friendly interfaces.

Key Responsibilities

  • Manage the RUN: Ensure stability and performance of existing applications.
  • Develop New Features: Build modern, responsive UI components using React and related technologies.
  • Refactor Existing Code: Improve maintainability and performance through best practices.
  • Collaborate with backend developers and UX/UI designers.
  • Optimize applications for speed and scalability.
  • Maintain documentation and adhere to coding standards.


Required Technical Skills

  • React.js (advanced proficiency)
  • HTML5, CSS3, and Bootstrap
  • JavaScript (ES6+)
  • Redux for state management
  • Familiarity with RESTful APIs
  • Strong understanding of responsive design and cross-browser compatibility


Preferred Qualifications

  • Experience with build tools (Webpack, Babel)
  • Knowledge of testing frameworks (Jest, React Testing Library)
  • Familiarity with Git
  • Strong problem-solving skills


Soft Skills

  • Excellent communication and teamwork
  • Attention to detail and commitment to quality
  • Ability to work in an agile environment