Senior React Developer

Who we are

mühlemann+popp (m+p) is a digital company builder based in Zurich, founded in 2010 by Markus Popp and Silvan Mühlemann. We launch and scale web-based companies — some you may know: sobrado.ch, bontique.ch, evenito.com, realmatch360.ch. 

Our team of ~50 people works out of Zurich, Wroclaw, Warsaw, and remotely across Europe.

We love pragmatic engineering, clean architecture, a healthy dose of product thinking — and we’re always experimenting with what’s next.

🔭 Curious about our stack and approach? Check our Tech Radar for a live snapshot of what we use and explore. 

Why this role matters

We are seeking a highly skilled and passionate Senior Frontend Developer to join our talented team. You will play a crucial role in designing, developing, and deploying sophisticated, modern web and Progressive Web Applications (PWAs). You’ll have the opportunity to work on diverse and challenging projects, primarily within the dynamic Real Estate and Healthcare sectors, utilizing a cutting-edge tech stack centered around React. If you thrive on building high-quality user interfaces and are eager to tackle complex problems, this role is for you.

What You'll Do

• Lead the development of user-facing features using React, Next.js, and TypeScript.
• Build robust, reusable components and maintainable frontend libraries using tools like Storybook.
• Collaborate closely with UI/UX designers, backend developers, and product managers to translate requirements into elegant technical solutions.
• Implement performant and responsive user interfaces with strong CSS skills, leveraging utility frameworks like Tailwind CSS and preprocessors where appropriate.
• Integrate real-time functionalities using WebSockets.
• Optimize applications for maximum speed, scalability, and accessibility.
• Utilize Docker for containerization and contribute to streamlined development workflows using Git.
• Actively participate in code reviews, architectural discussions, and knowledge sharing.
• Stay abreast of new technologies and continuously seek ways to improve our frontend practices.
• Adapt and contribute effectively across multiple projects as needed.

What You Bring (Required Skills)

 Soft Skills

• Open, thoughtful, and positive mindset
• Strong communicator, especially in remote/distributed setups
• Passion for software, design, and emerging technologies

Hard Skills

• Proven experience as a Senior Frontend Developer with a strong portfolio of React-based projects.
• Deep expertise in TypeScript and modern JavaScript (ES6+).
• Hands-on experience with React and its ecosystem, including frameworks like Next.js.
• Proficiency in state management solutions, particularly Zustand (experience with others like Redux, Context API is also valuable).
• Excellent command of CSS, including modern layouts (Flexbox, Grid), preprocessors (Sass/LESS), and utility-first frameworks like Tailwind CSS.
• Experience building and documenting component libraries using Storybook.
• Solid understanding and practical experience with WebSockets.
• Proficiency with version control using Git workflows.
• Familiarity with containerization using Docker.
• A pragmatic problem-solving mindset and a passion for writing clean, efficient, and well-tested code.
• Excellent communication skills and a positive, collaborative, and open-to-learning attitude.
• Ability to adapt and manage tasks across multiple projects simultaneously.

Bonus Points (Nice-to-Haves)

• Experience developing cross-platform mobile applications with Flutter.
• Familiarity with mobile app development wrappers like Capacitor.
• Experience interacting with GraphQL APIs.
• Interest or experience in AI/ML, specifically Large Language Models (LLMs), frameworks like LangChain, or agentic AI development (AutoGen, CrewAI).
• DevOps experience, particularly with cloud platforms (GCP, Azure) and Infrastructure as Code tools (Terraform).
• Proficiency with design tools like Figma.
• Backend development experience, especially with C#.
• Contributions to open-source projects.
• An engaging GitHub profile showcasing your work and passion!

Why Join Us?

• Impactful Projects: Work on meaningful applications in high-growth sectors like Real Estate and Healthcare.
• Modern Tech Stack: Utilize the latest tools and technologies in frontend development.
• Learning Culture: We encourage continuous learning, exploration (including Flutter, AI), and professional development.
• Collaborative Environment: Join a supportive, positive, and friendly team of passionate developers.
• Growth Opportunities: Take on challenging tasks and grow your skills in a dynamic setting.

The Deal

• B2B contract or business-incubator
• Work remote or from our shared office in central Warsaw
• $77/month for medical & sport
• $100 birthday bonus + $1,000 loyalty bonus after 3 years
• 3 education days/year
• Budget for courses, conferences, and deep dives
• Summer Camp every year in a cool European city
• If you're in Warsaw: monthly team lunch, spring event, year-end dinner

Languages

Good English (B2) is required for communicating with the customer. 

Why m+p?

Because we’re small enough to move fast, and bold enough to try things that matter.
Because we think beyond Jira tickets.
Because we use AI tools not just to build products — but to change how we work.
Because we believe that code + people + ideas = impact.

Wanna join? Reach out — we’d love to hear your story.