Senior Full-stack (Next.js) developer

We are looking for a Senior Full-stack (React and Next.js) developer with 4+ years of experience in Web programming for a successful web project in the health industry in the USA.

REQUIREMENTS

MUST HAVE

• 4+ years of experience in developing complex Web solutions
• Extensive general knowledge of JavaScript (Vanilla.js, React.js, Typescript, Next.js, Node.js )
• English level — at least Intermediate Strong

WILL BE A PLUS

• Experience with Three.js and 3D rendering in the browser
• Familiarity with Pyodide or Python running in web environments
• Knowledge of GCP services like Cloud Functions, Firestore, or App Engine
• Previous Data Engineering experience might be a plus

RESPONSIBILITIES

• Develop and maintain web applications using JavaScript/TypeScript (Node.js, React.js / Next.js).
• Design, implement, and maintain scalable APIs and backend services.
• Integrate and optimize search with Algolia, real-time data fetching with SWR, and advanced 3D rendering with Three.js.
• Leverage Pyodide to run Python in-browser where needed.
• Work with GCP services for deployment, storage, and scalability.
• Write clean, maintainable, and well-documented code.
• Participate in agile ceremonies, code reviews, and continuous improvement efforts.
• Ensure performance, scalability, and accessibility best practices are followed.

ABOUT PROJECT

Our client is a software company in the USA.

PRODUCT

The project focuses on reconstructing complex neuronal structures by analyzing ultra-high-resolution microscopy data, capturing intricate details of brain cells and their connections. Using advanced 3D deep learning architectures, the system processes petabyte-scale volumetric datasets to uncover biological patterns at an unprecedented scale. This platform is transforming how researchers explore the brain, accelerating scientific discovery and enabling a deeper understanding of neural systems across the globe. Its backbone combines powerful computer vision pipelines with scalable infrastructure built for performance and precision.

Interview Stages

1-st stage — Call with Recruiter (30 minutes) 2-nd stage — Interview with our Engineer and Recruiter (1 hour) 3-rd stage — Client interview

Our Benefits

• Projects with a modern JS stack (React.js, React Native, Vue.js, Angular, Node.js)
• Strong JavaScript community at the company
• Work from anywhere (fully remotely or in our offices in Lviv, Kyiv or Krakow)
• Paid vacations and sick leaves, additional days off
• Education: regular tech talks, educational courses, paid certifications, English classes
• One of the best IT employers in Lviv based on DOU rating

Recuiter Anastasiya Matveyeva