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Senior Data Visualization / Full-Stack Developer

Sparta Global — Poland · Posted ~2 hours ago

Senior Full-time Onsite

Skills

full-stack development data visualization web application development UI development API development GCP BigQuery APIs web applications

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Summary ✨ AI‑Generated

Take a senior full-stack role building internal, data-driven web applications in a major enterprise technology environment. You’ll create reusable components and intuitive interfaces, design APIs for large-scale data platforms, and work closely with data, design, cloud, and DevOps specialists while owning solutions from development through ongoing support.

Highlights

Own solutions end-to-end in a small collaborative team. The role offers significant responsibility across design, development, implementation, and support, along with close collaboration across engineering, data, design, and DevOps disciplines.

Description

We’re Hiring: Senior Data Visualisation / Full-Stack Developer | Kraków Sparta Global Poland is looking for an experienced Senior Data Visualisation / Full-Stack Developer to join a major enterprise technology environment in Kraków. You’ll join a small, collaborative team responsible for building and supporting internal data-driven web applications, with the opportunity to take real ownership of solutions from design and development through to implementation and ongoing support. What you’ll be doing • Design and develop reusable software components for a scalable suite of internal web applications • Build intuitive, high-quality user interfaces with a strong focus on usability • Design and implement APIs to publish and serve data from a large-scale Data Platform • Work closely with UI/UX designers, Data Analysts, GCP/BigQuery developers and DevOps engineers • Help establish strong engineering practices, coding standards and maintainable solutions • Take ownership of deliverables and drive development through to completion What we’re looking for • 3+ years’ experience in full-stack development • Strong front-end development skills with React, TypeScript and HTML • Experience with Express.js • Experience building RESTful APIs/services using Node.js • Good working knowledge of Git • Experience implementing unit tests and automated testing practices • Comfortable working independently and taking ownership of delivery • Fluent English Nice to have • Figma • SQL / Google BigQuery (GCP) • ReactFlow or D3.js • TanStack Query / Router • Vite • Playwright 📍 Location: Kraków, Poland 💼 Senior-level opportunity 🌍 English-speaking environment If you’re a strong full-stack engineer who enjoys combining React development, data visualisation and large-scale data platforms, I’d be keen to hear from you. Apply directly or send me a message to discuss the opportunity. #Hiring #KrakowJobs #React #TypeScript #NodeJS #FullStackDeveloper #DataVisualisation #GCP #BigQuery #TechJobs #SpartaGlobal