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December 17, 2025

Senior FrontEnd React Developer

Senior • Remote

Warsaw, Poland

Project Description:

Welcome to project, where science meets life. We craft web platforms for the life science industry, turning complex molecular data into sleek, interactive UIs. Imagine a darkly elegant React app that helps researchers track experiments, analyze results, and maybe — just maybe — change the world. Our team of backend alchemists and design sorcerers needs a Frontend Engineer to help conjure interfaces that are as functional as they are hauntingly beautiful.


Your duties:


  • Build and refine ReactJS components (hooks, context, functional wizardry)

  • Create a reusable component library tailored for scientific workflows

  • Integrate REST/GraphQL APIs and orchestrate async states like a symphony

  • Optimize performance with code-splitting, virtualization, and memoization

  • Ensure responsive, pixel-perfect layouts — from lab desktops to field tablets

  • Write tests (Jest, React Testing Library) to keep bugs buried deep

  • Join sprint rituals, code reviews, and the occasional deploy


Requirements:


  • 5+ years of React experience with production-grade apps

  • Strong JavaScript (ES6+), HTML5, CSS3 (Grid, Flexbox, animations)

  • Experience with state management (Redux, Zustand, or similar)

  • Comfort with APIs, HTTP mechanics, and error handling

  • Git fluency and exposure to CI/CD workflows

  • Testing mindset and debugging skills sharp enough to dissect tricky bugs

  • Bonus: Next.js, motion libraries (Framer Motion), accessibility, cloud basics


We offer: 


  • 👨‍💻 work in a team of interdisciplinary experts and technology enthusiasts, inspired by working in a flat hierarchy; 

  • 📈 permanent full-time cooperation in an extraordinary company, which has been growing dynamically for 20 years; 

  • 🚀 possibility of development in various IT projects realized for well-known and recognizable clients – leaders in their industries; 

  • 🥇 the ability to work with the latest technologies and the highest standards of development; 

  • ⌚️ flexible working hours and a hybrid or fully remote working model (different arrangements apply in different teams, we do not impose any options); 

  • ☁  a number of initiatives supporting knowledge sharing and development, such as: internal training, thematic guilds, Cloud training and certification opportunities (technology partnerships in four clouds); 

  • 📣 possibility to learn English or German online and English lessons for teams; 

  • 🏋️‍♂️ multisport card and medical insurance; 

  • ⛵️ sea adventures co-financed by company – we regularly sail in the Caribbean, Mediterranean or North Sea.