Senior Full Stack Developer

Company Overview 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. Position 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 and back‑end (50%, 50%) 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 Working Arrangement: 1 day in the office per week. Salary Range: EUR 65k - 90k Benefits: Medical, Insurance, Parental leave Responsibilities Design, implement, and maintain full‑stack web and server applications. Create testable and maintainable software solutions using front‑end and back‑end technologies. Generate innovative ideas and recommend software improvements to existing applications. Work closely with product managers to translate product and user requirements into technical tasks. Required Tech Stack TypeScript NodeJS/NestJS ReactJS & Redux 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 Azure Cloud Services Requirements 8 years of experience working with server‑side applications and building microservices. 8 years of experience in developing front‑end applications, including micro‑frontends. DevOps‑driven mindset. At least 5 years of experience in designing and developing applications using ReactJS. Hands‑on experience with MongoDB, PostgreSQL, or Snowflake. Solid understanding of microservices, scaling, and resiliency. Advantages Experience with StoryBook. Experience with Zustand. Experience working with Figma. Experience working with ArgoCD/Helm. Experience with Azure Portal. Experience with Kong. 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 React.js NestJS Typescript NoSQL Snowflake Node.js MongoDB Kubernetes Helm ArgoCD Jenkins Azure Kong API Gateway J-18808-Ljbffr

Location: Barcelona, Cataluña, ES

Posted Date: 11/20/2025