Mid Fullstack Engineer (Node.js/React) w Warszawa, Polska

Why Join Us At Cloudfide, we engineer solutions where data truly becomes an accelerator for innovation. We build and evolve large-scale Big Data and cloud-native platforms for global clients, including leaders in retail and the Fortune 500. We process massive, complex datasets, operate fully in the cloud ecosystem, and work with the latest technologies, including AI, ML, MLOps, and modern data architectures. Our projects have measurable, real‑world impact — from enhancing customer experiences at scale to empowering data-driven decision-making in high‑visibility global organizations. As we continue to grow, you'll have the opportunity to shape solutions, mentor others, drive architecture decisions, and take ownership of strategic initiatives. Opportunity Overview As a Mid Fullstack Engineer (https://jobeax.com/link/EBEjmScu4t33NI9B you will work on a platform that aggregates, processes, and visualizes complex business data for a Fortune 500 client. You'll move fluidly across the entire stack — from designing scalable backend services to building intuitive React interfaces — directly improving user efficiency and supporting better decision-making through automation and thoughtful engineering. Expect a collaborative, AI-forward environment where thinking outside the box is encouraged and your proactivity is genuinely valued. You'll join a team of passionate engineers who value technical excellence, collaboration, and continuous growth. Your Responsibilities Designing and building scalable backend services using https://jobeax.com/link/JSd7UYCSg572jJDY and Express.js. Developing frontend components with React and TypeScript, with attention to UI quality and user experience. Integrating external APIs and services into a cohesive, well-functioning platform. Translating business requirements into well-structured technical tasks and delivering high-quality features end-to-end. Optimizing code for performance, maintainability, and scalability across both frontend and backend. Conducting code reviews and contributing to documentation and best practices (SOLID, DRY, KISS). Participating in Agile processes, continuous delivery, and mentoring less experienced developers. Leveraging AI tools in day-to-day work to enhance productivity and output quality. Sharing knowledge and contributing to a collaborative learning culture within the team. What We're Looking For 3+ years of experience with JavaScript/TypeScript in a fullstack role. Strong proficiency in https://jobeax.com/link/JSd7UYCSg572jJDY and Express.js. Strong proficiency in React and modern frontend development patterns. Familiarity with relational databases (e.g. PostgreSQL, MySQL). Understanding of authentication/authorization mechanisms (OAuth2, JWT). Hands-on knowledge of Git, Docker, and Linux CLI. Familiarity with DevOps practices and CI/CD pipelines. Proactive and curious mindset — comfortable working in dynamic, evolving project environments. Fluent English communication, able to collaborate effectively across international teams. Nice to Have Experience with microservices architecture. Familiarity with MS Azure services (Web App, Storage, Azure DevOps). Knowledge of web application security best practices. Experience with JS testing frameworks (Jest or similar). Experience mentoring or leading small teams. Here's why you'll love Cloudfide Benefits: MyBenefit platform / Multisport Enel‑Med private medical care Professional Growth: Annual 2,000 PLN development budget Access to e‑learning platforms Real opportunities to expand responsibility and lead initiatives — most of our Leads come from internal promotions As the company continuously grows, you get real opportunities to expand your responsibilities, explore new areas, and even take ownership of your own initiatives. Work Environment: Long-term cooperation: UZ or B2B (we value stable, lasting relationships) Remote-first, work from anywhere in the world (workation) Flexible hours & strong focus on work-life balance Collaboration with top engineers you can truly learn from Flat structure — every voice counts, and you help shape the company Culture & Integration: Company-wide trips (including international ones) Team integration budgets Open communication and supportive, passionate teams Equal Opportunities CLOUDFIDE is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.