Senior Full Stack Engineer (Node.js / React)

Nasze wymagania: 5+ years of experience with JavaScript / Node.js 3+ years with TypeScript and React (Next.js preferred) Strong experience designing scalable APIs and backend systems Solid understanding of databases (relational & NoSQL) Experience with cloud environments (AWS or similar) Good understanding of system design and software architecture Experience working with high-load or data-heavy applications Knowledge of web fundamentals (CORS, networking, browser behavior) Familiarity with security best practices (OWASP) Ability to work independently and take ownership Strong communication skills (English C1+) Mile widziane: Experience with microservices / serverless architectures Experience with data pipelines, scraping, or data processing Background in team leadership or mentoring Exposure to AI / ML integrations or data-driven products O projekcie: We are looking for a Senior Full Stack Engineer to join a high-impact engineering team building a data-driven insights platform used globally. This role is ideal for someone with strong technical ownership, experience working on scalable systems, and the ability to contribute both hands-on and as a technical leader within a team. You’ll be working on systems that process and serve large volumes of data, collaborating closely with product, design, and DevOps teams to deliver high-quality solutions. Zakres obowiązków: Own end-to-end development of services and applications (design → implementation → deployment → maintenance) Build and scale RESTful and GraphQL APIs Design and optimize database schemas (SQL & NoSQL) Work on high-performance, data-intensive systems Contribute to architecture decisions and system design Ensure code quality through testing (unit, integration, e2e) and best practices Collaborate in Agile environment (2-week sprints, continuous delivery) Mentor other engineers and support technical decision-making Communicate clearly about technical solutions and progress Oferujemy: Work on a scalable, data-rich platform with real business impact High level of ownership and autonomy Collaborative, experienced engineering team Modern tech stack and engineering practices Fast and efficient interview process