Hybrid Principal Full Stack Developer

at BioCatch

• Job title: Principal Full Stack Developer
• Job type: Full Time
• Experience level: Lead
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Angular, BigQuery, Cypress, Docker, JavaScript, Kubernetes, Linux, MySQL, Node.js, Oracle, Postgres, Python, RDBMS, React, TypeScript, Vue.js
• Location requirements: Hybrid, Tel Aviv, Israel

About the role

• Senior Full Stack Developer for BioCatch's Applications Group, designing scalable applications and web services using NodeJS and Python.

Responsibilities

• Design, implement and maintain scalable applications and web services within the Applications Group’s ecosystem, providing technical leadership and long-term ownership.
• Design and implement testable and maintainable software solutions using both front-end and back-end technologies, setting patterns and standards across the team.
• Come up with innovative ideas and recommend high-impact software improvements to existing applications, with a focus on scale, reliability, and performance.
• Build the team's domain expertise and assume product ownership, while strengthening the shared applications infrastructure as a core team contributor.

Requirements

• B.Sc in Computer Science or equivalent practical experience
• 7+ years of experience designing and developing production-grade applications using **NodeJS / Python** (strong expertise in at least one)
• Excellent software engineering skills, with proven ability to build scalable, maintainable systems and apply strong design patterns
• Strong front-end experience with **React / Angular / Vue**, including modern **JavaScript (ES2015+) / TypeScript**, HTML and CSS
• Hands-on experience with at least one **RDBMS** (e.g., Postgres / MySQL / Oracle), including schema design and performance tuning
• Proven experience owning **CI/CD pipelines** and release processes, with a focus on reliability and automation
• Production experience with **Linux** and modern deployment platforms (**Docker / Kubernetes or equivalents**) and delivery tooling (**ArgoCD / Helm or equivalents**)
• Familiarity with AI concepts: RAG, MCP, Context and system prompts
• Strong testing mindset and hands-on experience with frameworks such as **Cypress / Playwright / React Testing Library**
• Ability to lead cross-team execution, influence technical direction, and drive complex initiatives end-to-end
• **
• **Advantage:**
• **Advanced, deep expertise in NestJS**, including building scalable backend architectures and reusable modules
• Experience with big data / analytics platforms such as **Snowflake / ClickHouse / BigQuery**
• Experience with **Microfrontend architecture** and shared frontend platform ownership