Senior Fullstack TS Developer (backend-oriented) at Jobgether – Tremblay-en-France, Île-de-France

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Fullstack TS Developer (backend-oriented) in France.

We are seeking a highly skilled Fullstack TypeScript Developer with a strong focus on backend development to design, build, and optimize features for a high-growth B2B SaaS platform. You will work on multiple projects, contributing to both frontend and backend solutions while improving the codebase through refactoring, bug fixes, and performance optimization. This role requires autonomy, creativity, and a passion for technical challenges, as well as collaboration with customer support and fellow developers to deliver high-quality software. Operating in a dynamic, fully remote environment, you will have the opportunity to make a measurable impact on product functionality, user experience, and overall company growth. Your contributions will be critical in scaling the platform, optimizing workflows, and supporting teams across the organization.

• Design, develop, and deliver new features across the frontend and backend, ensuring high-quality user experiences.
• Improve existing code through refactoring, bug resolution, and performance optimization.
• Manage multiple projects simultaneously while taking full ownership of complex development tasks.
• Support customer-facing teams by providing technical solutions to challenges and inquiries.
• Facilitate knowledge sharing within the engineering team through mentoring and collaborative problem-solving.
• Contribute to the scalability, optimization, and long-term maintainability of the software platform.

Requirements:

• 5+ years of professional experience in TypeScript/JavaScript development with a strong track record in web applications.
• Solid expertise in Node.js and MongoDB, with backend-oriented development experience.
• Ability to work independently, take ownership of complex projects, and quickly learn new technologies.
• Experience with Agile methodologies and collaborative tools like Slack, Notion, and Gather.
• Strong communication skills in both French and English, with the ability to work across time zones close to France.
• Adaptable and willing to work on front-end integration, backend development, database optimization, and technical support as needed.
• Nice-to-have: prior experience in B2B SaaS startups or self-directed personal projects demonstrating programming passion.

Benefits:

• Competitive salary (55K€–70K€) with 18K€ annual bonus and profit-sharing opportunities.
• Full remote work policy with home office budget and MacBook Pro + necessary tools.
• Comprehensive 100% premium medical coverage for you and your family through Alan Blue.
• Swile meal tickets and 100% covered Navigo commuting card.
• Opportunities for professional growth through mentorship, team knowledge sharing, and access to learning resources.
• Annual global team-building events to foster collaboration and company culture.