Senior Frontend (React) Developer (A)

Bosshard & Partner AG seeks a Senior Frontend Developer in Zürich for a hybrid contract role, focusing on migrating mission-critical financial platforms using React and TypeScript.

The company is looking for an experienced developer to support a major financial institution in Zurich. The role involves migrating mission-critical financial platforms and building modern, scalable React applications. The developer will deliver high-quality user experiences within a regulated, enterprise-scale environment using JavaScript and TypeScript.

Responsibilities

• Lead the development of complex frontend solutions, prioritizing scalability, performance, security, and long-term maintainability.
• Collaborate with UX/UI designers and business stakeholders to convert complex requirements into intuitive, high-quality user experiences.
• Write production-grade React and TypeScript code for complex financial applications.
• Solve advanced frontend challenges, including state management, performance optimization, and integration with distributed backend systems.
• Refactor and modernize existing codebases as needed.
• Support troubleshooting and root-cause analysis in development and production environments.
• Contribute actively in an agile, fast-paced, and highly collaborative environment.

Requirements

• Extensive, hands-on experience in JavaScript and TypeScript, with a strong focus on React at enterprise scale.
• Deep understanding of modern frontend ecosystems, tools, and frameworks (React, Node.js, build tooling).
• Proven experience working with design systems and large, shared component libraries.
• Solid understanding of Unix/Linux environments and bash scripting.
• Experience with cloud platforms, preferably Microsoft Azure.
• Knowledge of microservices architecture and containerization (e.g., Docker, Kubernetes).
• Familiarity with CI/CD pipelines and DevOps practices.
• Exposure to API security, OAuth2, and related standards.