Senior JavaScript Developer

Nasze wymagania: Advanced proficiency in JavaScript, with a strong focus on asynchronous programming and 3+ years of relevant experience Hands-on experience with OpenFin APIs for desktop application development Solid understanding of FDC3 standards and protocols for financial app interoperability Background in ReactJS Strong debugging and performance optimization skills in real-time, complex environments Good work ethic and strong sense of ownership of the end result Excellent verbal and written communication skills, B2 level of English O projekcie: We are seeking a talented developer with advanced expertise in asynchronous JavaScript and hands-on experience with OpenFin APIs to build high-performance desktop applications for the financial sector. The ideal candidate will also possess a strong understanding of FDC3 standards to enable secure and standardized interoperability between financial applications. Please note that the role requires working from the office 3 days per week. Zakres obowiązków: Develop and maintain high-performance desktop applications using JavaScript, focusing on asynchronous programming paradigms (Promises, async/await, event-driven and messaging architectures) Utilize OpenFin APIs to create, manage, and optimize application windows, inter-application messaging, and custom integrations Implement FDC3 protocols to ensure secure and standardized communication between financial applications Debug, profile, and optimize applications for performance in complex, real-time environments Collaborate with team members to arrange in-office days and hours flexibly, based on project needs and meetings Oferujemy: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English language classes Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events