React Developer (f/m/x)

Join a team building a modern fintech platform that helps businesses manage company spending more efficiently. The project focuses on developing a financial product that enables seamless integration of financial tools including corporate cards, expense management, and invoice processing.

• Lead initiatives focused on designing, building, and maintaining scalable front-end applications primarily using React and TypeScript
• Build modern, performant, and intuitive user interfaces for key areas of the fintech platform
• Collaborate closely with cross-functional teams across backend engineering, product, and design to deliver scalable product solutions
• Integrate front-end applications with microservices-based architectures and APIs (REST / GraphQL)
• Analyze application performance and implement optimizations to ensure high responsiveness, reliability, and scalability
• Participate in code reviews, architecture discussions, and post-mortems while mentoring other engineers
• Proactively address technical debt and guide the team through technical challenges, refactoring initiatives, and architectural migrations

• At least 5 years of professional software engineering experience, including strong commercial experience with React
• Strong expertise in TypeScript, modern JavaScript (ES6+), and building large-scale SPA applications
• Solid experience designing scalable front-end architectures using component-based and modular design principles
• Experience working with APIs and distributed systems in microservices-based environments
• Hands-on experience with front-end testing frameworks (unit, integration, e2e) and observability/monitoring tools
• Previous work with CI/CD pipelines, cloud environments such as AWS, and container orchestration platforms like Kubernetes
• Strong problem-solving skills, ownership mindset, and passion for mentoring and elevating engineering teams
• Professional English proficiency - minimum B2
• Fluent in Polish required
• Residing in Poland required

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care