Job Description :

We are looking for aSenior Web Developerwho thrives in fast-paced start-up environments and enjoys building scalable, high-performance web applications. You’ll be responsible for designing, developing, and maintaining complex systems that push the boundaries of interactive web experiences—including advanced 3D animations and visualizations.

This role requires a hands-on engineer who is highly self-organized, can take ownership of projects from concept to deployment, and is comfortable collaborating across product, design, and engineering teams.

Responsibilities

Design, develop, and maintain scalable web applications using React and TypeScript .
Implement robust RESTful APIs and integrate backend services with Python .
Architect and optimize database systems for performance and scalability.
Lead system design discussions, ensuring clean architecture and maintainable solutions.
Build and optimize 3D animations and interactive experiences using Three.js (3js) .
Ensure smooth integration of UI / UX designs into functional applications.
Write clean, well-documented, and maintainable code with best practices.
Collaborate with cross-functional teams in a start-up environment , adapting quickly to shifting priorities.
Take ownership of tasks, self-manage timelines, and proactively solve problems.
Mentor junior developers and contribute to a culture of continuous learning.

Requirements

5+ years of professional experience as a web developer in start-up or fast-paced environments .
Expert knowledge of React and TypeScript .
Strong proficiency in Python for backend and API development.
Solid understanding of databases (SQL and / or NoSQL) and query optimization.
Proven experience in system design and scalable architecture.
Hands-on experience with Three.js and building 3D / interactive web applications .
Strong understanding of RESTful API design and integration.
Ability to work independently, self-organize, and manage multiple priorities.
Excellent problem-solving skills and attention to detail.
Strong communication and collaboration skills.

Nice-to-Haves

Experience with cloud platforms (AWS, GCP, or Azure).
Familiarity with CI / CD pipelines and DevOps practices.
Exposure to WebGL or other advanced visualization frameworks.
Knowledge of GraphQL .
Prior experience mentoring or leading small engineering teams.

Our Benefits

A strong sense of appreciation and flat hierarchies
Respectful and friendly working atmosphere
A working environment tailored to your needs
Close collaboration in our international team
Flexible working hours

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Sentics GmbH

Jobs:

Senior Web Developer

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