Full stack Developer

9 hours ago

Madrid Community of Madrid Israel BioCatch Full time ₪90,000 - ₪120,000 per year

BioCatch is the leader in Behavioral Biometrics, a technology that leverages machine learning to analyze an online user's physical and cognitive digital behavior to protect individuals online. BioCatch's mission is to unlock the power of behavior and deliver actionable insights to create a digital world where identity, trust, and ease coexist. Today, 34 of the world's largest 100 banks and 210 total financial institutions rely on BioCatch Connect to combat fraud, facilitate digital transformation, and grow customer relationships.. BioCatch's Client Innovation Board, an industry-led initiative including American Express, Barclays, Citi Ventures, and National Australia Bank, helps BioCatch identify creative and cutting-edge ways to leverage the unique attributes of behavior for fraud prevention. With over a decade of data analysis, more than 80 registered patents, and unparalleled experience, BioCatch continues to innovate to solve tomorrow's problems. For more information, please visit

We seek a Full-Stack Web Developer to design, implement, and maintain full-stack web and server applications. The ideal candidate will create testable and maintainable software solutions using front-end (70%) and back-end (30%) technologies, contribute innovative ideas, and recommend software improvements to existing applications. Collaboration with product managers to transform product and user requirements into technical tasks is essential.

Location: Barcelona. Hybrid schedule: 1 day in the office per week.

Responsibilities:

· Develop and maintain responsive and generic UI components using React + TypeScript.

· Implement and integrate backend APIs using NestJS and gRPC.

· Write robust unit and integration tests (Jest, Testing Library).

· Collaborate with designers and backend engineers to ensure seamless data flow and usability.

· Participate in code reviews, CI/CD pipelines, and deployment processes.

· Optimize performance and ensure scalability on both client and server sides.

Required Tech Stack:

· TypeScript

· NodeJS/NestJS

· ReactJS & State Management Tools

· Document-Based Databases (e.g., MongoDB)

· Relational Databases (e.g., PostgreSQL, Snowflake)

· Unit Testing - (jest /React Testing Library)

· GitHub actions and Jenkins pipelines

· Kubernetes, Helm, and ArgoCD

· 3–5 years of professional experience in full-stack or frontend-heavy roles.

· Strong knowledge of React and TypeScript (core + ecosystem).

· Experience with state management (Zustand, Redux, or similar).

· Good understanding of REST/gRPC APIs and backend frameworks.

· Familiarity with SQL databases and general data modeling.

· Hands-on with testing frameworks (Jest, Testing Library, Cypress).

· Comfortable with containerized environments (Docker) and CI/CD pipelines.

Nice to Have

· Knowledge of Storybook

· Experience with Material UI

· Experience with TanStack Query

· Experience with Kubernetes or Azure Cloud.

· Familiarity with micro frontend architectures or Webpack Module Federation.

· Experience with Figma

Personal Attributes:

· Innovative and open-minded with a strong passion for technology.

· Eagerness to learn new things and keep up with industry trends.

Skills

· Web Development

· Full-Stack Development

· ReactJS

· Typescript

· State Management

· Material UI

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