Senior TypeScript Full Stack Developer (all)

Sonia Solutions; Berlin; Vor Ort; Vertraulich; Vollzeit

Zusammenfassung

A leading software company in Berlin is seeking a Senior Full-Stack Engineer to design and implement high-performing web applications. Candidates should have substantial experience in TypeScript and Node.js, alongside a solid foundation in React. This role offers attractive compensation and flexible work arrangements within Germany or Luxembourg.

Leistungen

30 days of vacation per year

Flexible work arrangements

Professional development allowance

Attractive compensation aligned with skills

Qualifikationen

• 8+ years of professional software development experience.
• Proven experience with frontend and backend development.
• Familiarity with modern web development technologies.

Aufgaben

• Design and implement robust, scalable full-stack web applications.
• Optimize application performance and improve system reliability.
• Conduct code reviews and mentor junior developers.

Kenntnisse

TypeScript / JavaScript

Node.js

React

ORM tools

RESTful API design

CI / CD pipelines

Git version control

Database design

Tools

Prisma

Playwright

Vitest

Jobbeschreibung

With Sonia, doctors are successful doctors. We create and deploy AI enhanced solutions that make doctors’ lives easier, patients’ care better, and healthcare systems more efficient. If you’re proactive, impact-driven, and ready to shape the

future of healthcare, join us.

We’re looking for a Senior Full-Stack Engineer (all) to help us build modern, high-performing web applications. You’ll play a key role in shaping our architecture, mentoring team members, and contributing to the scalability of our product.

Tasks

Design and implement robust, scalable full-stack web applications

• Write clean, maintainable, and testable code following best practices
• Collaborate on architecture decisions and long-term technical planning
• Optimize application performance and improve system reliability
• Mentor junior developers and support their growth
• Conduct code reviews and share constructive feedback
• Contribute to technical documentation and knowledge sharing

Requirements

Required Qualifications (Must-Have) :

8+ years of professional software development experience

Strong expertise in TypeScript / JavaScript and Node.js

Proven experience with React and modern front-end development

Solid understanding of full-stack development principles

Hands-on experience with ORM tools , especially Prisma

Experience in backend development with Node.js

Familiarity with RESTful API design and implementation

Understanding of CI / CD pipelines

Proficiency with Git version control

Experience with database design and data modeling

Nice to Have

Experience with Remix or other server-side rendering (SSR) frameworks

Familiarity with Chakra UI

Experience with testing frameworks (e.g., Playwright, Vitest)

Benefits

An engineering-driven culture with modern tools and clean code practices

A product-focused environment where quality and performance matter

A collaborative team that values learning, pragmatism, and ownership

Attractive compensation aligned with your skills

Flexible work arrangements, full remote within Germany or Luxembourg possible

30 days of vacation per year What We Offer :

Attractive compensation aligned with your skills

Flexible work arrangements

Professional development allowance

If you're passionate about web development and want to work with cutting-edge technologies, we'd love to hear from you!

I'm Margarita and will be guiding you through the application process.

Sonia is transforming dental practices with an AI-powered SaaS platform that automates time-consuming administrative tasks. By streamlining documentation and billing, we help dental professionals reduce errors, improve efficiency, and boost revenue. With advanced speech recognition, our platform integrates seamlessly into existing workflows, providing a user-friendly solution tailored to the unique needs of the dental sector.