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The React Developer is required to help building the next generation risk system for company's markets businesses. We are utilizing cutting edge technology to meet complex trader, supervisory and regulatory requirements, and the demands of an increasingly electronic business. The development position involves: Development of high-quality, modern UIs for developers, support, quants, and finance staff Participation in a fast-paced Agile development process Development of high-quality software, emphasizing simplicity, maintainability, and reuse Participation in code and design reviews Working proactively on diverse and innovative solutions Requirements analysis and capture, working closely with the business and business aligned teams to define solutions. Good communication with support, other development teams, and infrastructure teams Thorough automated testing using unit and integration tests. Contributing to architectural standards, development best practices, and promoting adherence to these standards Contributing to architectural and technical evolution of frameworks and APIs Influence the strategy of the team. Mentoring and supporting others on the team Key Relationships: UI team lead Portfolio owners and project leads Risk/Pricing development teams and colleagues in London, Poland, Canada, New York, Shanghai Control and support staff Qualifications and skills: The ideal candidate will be an experienced React Developer with a minimum of 6 years in industry and meet all of our required skills. The candidate must be a self-starter willing to tackle complex problems. Experience working on the server side and with GraphQL is also desirable. Required skills: Strong communication skills Minimum 6 years commercial experience, 3 years’ experience with React Strong knowledge of modern JavaScript tooling Strong knowledge of modern HTML, JavaScript & CSS Knowledge of Node.Js & npm Experience publishing npm libraries Minimum 2 years’ experience working with TypeScript Understanding of and experience with RESTful web services and API design Decent technical writing skills for documentation Good understanding of data structures and solid computer science fundamentals Precise, high-quality approach - but also pragmatic and collaborative Advanced English skills Desirable skills: Experience in Investment Banking or finance Experience with GraphQL Experience with micro-frontends Experience building developer tooling Knowledge of messaging systems and event-driven architectures Our offer: Hybrid work model in Warsaw (1 or 2 days at the office per week) Project for 6 months Contract B2B via Experis Interview process: 2 rounds (1st round is technical - coding round with the development team, 2nd round - meeting with Director and Manager) MultiSport Plus Group insurance Medicover Premium e-learning platform